Operators Manual
Contents
1. a MVG 750 8 y 5 SSS exl A ES E n 4 FSA Ed BERI DEUM YT SEND 002222 NBA 775 Pneumatic Shifting High and Low 3 positions without return spring MVG 1200 20 par DESCRIPTION Shift mechanism Pneumatic Shifting High and Low 2 3 positions without return spring MVG 1200 MVG 1600 MVG 2000 Attention For pneumatic shifting with spring we want to point out that in case of an air pressure loss the gear changes due to the spring pressure on MVG 1200 from high to low and on MVG 1600 and MVG 2000 from low to high Pneumatic Shifting High and Low 3 positions with defent without return spring MVG 1600 MVG 2000 SN 2 y DESCRIPTION Shift mechanism Engagement of the front axle drive as well as the PTO is performed pneumatically 6 5 to 8 bar air pressure Disengaging is done by the return spring which is installed in the shifting cylinder Pneumatic Shifting High and Low 2 3 positions without return spring MVG 750 MVG 1200 22 Upa Magnetic drain plugs perform the vital function of trapping small metaliic particles that circulate in the lubricant through the gears and bearings causing rapid wear and premature failure REFERENCE ONLY A Never add lubricant to axle or transfer case unless it is the same make and grade as that which is already in the axle or transf2. Marmon Herrington OPERATORS MANUAL REVISION 2 DATED 06 15 11 MARMON HERRINGTON ALL WHEEL DRIVE 13001 Magisterial Drive Louisville 40223 502 253 0277 800 227 0727 Fax 502 253 0317 E mail info marmon herrington com TABLE OF CONTENTS Page OPERATION INSTRUCTIONS FW OU Cb A 3 Transfer Cases 7 7 5 SERVICE INFORMATION IMTOO CU OIA M EP 7 EU i CAEN UGA re EEE E AA 7 Maintenance Schedule ANOS raria ect itio ied rs ed ea ET 9 Maintenance Schedule Transfer Cases 10 Lubrication Guide 10 Service and MaintenanCe 11 TRANSFER CASES Technical 13 14 20 23 26 7 8 AXLES 29 Oil Levels of Wheel Hubs 20 Brake Lever Adjust To e cid 31 Automatic Slack X 32 WARRANTY amp SERVICE Ordering Replacement Pas 33 Waranty e 33 Marmon Herrington Warranty 2 2 cct tione nani aii i nuana anG casaca ista 34 Warranty Repair and Claim Procedure 35 05 36 FOREWORD This manual has been prepared for owners and operators of vehicles equipped with Marmon Herrington All Wheel Drive
3. Options 16 two parts Input shaft taper roller bearings Intermediate shaft cylinder roller bearings Output shaft tapered roller bearings Front output shaft roller bearing slide bearing splash lubrication or splash force feed lubrication with pump at input shaft mechanical 3 positions pneumatic 2 or 3 positions pneumatic operation pneumatic operation PTO without front drive rear engine drive version version towable without disconnecting the drive shaft in neutral position external oil cooler connection electronic speedometer connection input drive direction counter clockwise synchronization ADM DESIGN MVG 1200 with differential HH m miM D aurcs ep Sierras m B Y mm S I MEE EN SZ jum SS umm 5 lt lt WR Se gt 7721 e rn mil E AL EE 2 Cross section VG 1200 type 7124 The MVG 1200 with differential 3 shaft design 2 speed transfer case with clockwise input drive direction view to input flange Housing two parts Bearing Input shaft taper roller bearings application Intermediate shaft cylinder roller bearings Output shaft tapered roller bearings and differential and needle bearing Front output shaft roller bearing slide bearing Lubrication splash lubrication or splash force feed lubrication with pump at input shaft Shifting mechanical
4. ment to affect its stability or reliability nor which has been subject to misuse negligence or accident nor which shall have been operated at a speed exceeding the factory rated speed or loaded beyond the factory rated load capacity or operated in violation of Marmon Herrington s instructions Marmon Herrington makes no warranty whatever on components of the original manufacturer s chassis not related to the modification work Also no warranty is made on tires rims ignitions or other parts usually warranted sepa rately by their respective manufacturers The manufacturers reserve the right to make changes in design and changes or improvements upon their product without notice and without incurring any obligation to install such changes or improvements upon their products theretofore manufactured This warranty shall become effective only when the Warranty Certificate has been returned to Marmon Herrington and validated by same 38 uq WARRANTY REPAIR AND CLAIM PROCEDURE Initial Failure Reporting 1 Operator must call Marmon Herrington Customer Service prior to performing any repairs and receive a Work Authorization Number to be eligible for reimbursement The work authorization number does not guarantee payment but is an acknowledge ment that the vehicle is within the warranty period in terms of date and mileage and that a claim has been activated It will be the responsibility of the operator to ensure that their repair fac
5. the tone ring When sensors are removed or replaced the copper washer may remain on the T Case un noticed If a sensor is then installed with a second washer the two washers will prevent the sensor from reaching the correct depth The speed sensor cable is color coded White Grey Green and Black The Grey wire power to sensor should have 9 14v with ignition ON The White wire is common or ground to chassis The Black wire is a positive signal wire and will show a 5v pulse signal when tripped reading a tooth The Green wire is a negative signal wire and will show 5v when reading the valley or area between teeth TROUBLESHOOTING To diagnose faults the rear wheels must be off the ground and turning by hand only while checking voltages at wire connections Verify 9 14v to dash switches and module with ignition ON Check Weather Pack Connector to speed sensor for moisture or corrosion Remember these connectors are a two click connection in that two clicks of the lock ears can be felt when pushing the two ends together The second click is vital as it confirms full pin seating A fully seated connection ensures proper voltage flow and protection against contaminants Moisture and or corrosion will cause short circuiting or intermittent signal During assembly connectors should be in stalled with a Delphi Weather Pack Crimper to ensure proper fitment of the seal The only means of testing the speed sensor is to read vo
6. 3 After setting of correct oil qu Clean and install breather 4 antity Install oil level plug 3 with new seal f a SERVICE AND MAINTENANCE MVG2000 Long Drop OIL CHANGE recommended in warm condition drain gear oil at drain plug 2 clean magnet of drain plug mount drain plug with new seal fill new gear oil at filling bore level bore 1 until it flows over 3 mount level plug 3 with new seal unscrew breather 4 clean it and mount it again OIL LEVEL CHECK open oil filling level plug 3 oil level must reach edge of level bore if necessary top up mount level plug with new seal without longitudinal differential approx 7 11 15 pts 1 oil filling plug with longitudinal differential 2 oil drain plug approx 6 5 3 level plug 13 74 pts 4 breather ATTENTION Assure correct oil level Low level causes lack of lubrication and reduces durability Too high level causes excessive splashing and leads to overheating of transfer case MVG2000 Short Drop OIL CHANGE recommended in warm condition drain gear oil at drain plug 1 clean magnet of drain plug mount drain plug with new seal fill new gear oil at filling bore level bore 2 until it flows over mount level plug 2 with new seal unscrew breather 3 clean it and mount it again OIL LEVEL CHECK open oil filling level plug 2 oil level must reach edge of level bore if necessary top up mount level
7. systems and components For additional technical assistance contact Marmon Herrington Customer Service Please observe and follow all procedural and maintenance guidelines to ensure reliable operation and optimum service life The Marmon Herrington basic service schedule will integrate seamlessly into most preventative maintenance programs Marmon Herrington shall not be liable for component failures or damages caused by operational abuse or neglect Please review the warranty statement for a detailed explanation of coverage and claim reporting procedures We thank you for your investment in Marmon Herrington equipment and look forward to serving your needs in the tradi tion of engineering excellence GENERAL OPERATING INFORMATION TIRES AND GEAR RATIOS Tires wheels and axle gear ratios have been carefully selected to minimize torsional wind up between front and rear axles Please consult tire or gear specialist before installing components differing from original equipment OPERATIONS Marmon Herrington equipped vehicles are intended for as needed AWD all wheel drive operation in off road conditions only DO NOT operate in AWD mode on hard dry surfaces SHIFTING Marmon Herrington Axles and Transfer Cases are not fitted with any type of clutching device and may only be shifted when the vehicle is at a complete stop This applies to FAE front axle engagement high and low range and locking dif ferentials The only ex
8. 3 positions pneumatic 2 or 3 positions Front drive pneumatically differential pneumatically lockable Options pneumatic operation PTO rear engine drive version pump fitting at front and rear drive version tow able without disconnecting the drive shaft in neutral position external oil cooler connection electronic peedometer connection input drive direction counter clockwise synchronization ADM DESIGN f MVG 1600 without differential MVG 2000 A RI NE p M ON SS a AS SAN SESS 5 SON Al tl le WN KA 2 f m d J Cross section MVG 1600 The MVG 1600 MVG 2000 without differential is 3 shaft design 2 speed transfer case with clockwise input drive direc tion view to input flange Housing Bearing application Lubrication Shifting Options 18 two parts Input shaft taper roller bearings Intermediate shaft cylinder roller bearings Output shaft tapered roller bearings Front output shaft roller bearing slide bearing splash lubrication or splash force feed lubrication with pump at input shaft for the executions with PTO and for external cooling system rear engine drive version and version with mechanical shifting mechanical 3 positions pneumatic 2 or 3 positions pneumatic operation PTO without front drive rear engine drive version pump fitting at front and rear side externa
9. BOLT AND STUD NUTS Front spring U bolt nuts should be securely tightened If the front axle continues to shift on the springs it is anindication that the spring center bolts are sheared and they should be replaced WHEELS AND TIRES Check wheels and tires for runout and balance See that tires are inflated to recommended pressure in order to provide the SAME TIRE ROLLING RADIUS FRONT AND REAR H WHEEL BEARINGS In order to ensure top performance long bearing life the tapered roller bearings must be properly preloaded upon assembly anytime the outer and assembly is disassembled Proper adjustment is obtained by tightening the inner bearing nut with the bearings in position until the hub will no longer turn Then back off the nut ap proximately 1 8 revolution install retainer and outer nut and lock in position The hub should now turn freely with no perceivable end play Consult the specific axle maintenance manual for a more detailed procedure GENERAL INFORMATION 1 Lubrication Lubricate the front axle assembly in accordance with the Lubrication Chart of this manual DO NOT OVER LUBRICATE If the differential universal joints or hub bearings are over lubricated the lubricant will be presur ized past the oil seals and vents and may do damage by destroying the seal as well as entering the brakes 2 LOOSE ADJUSTMENTS As soon as a looseness is noted in the hub bearings pivot pins or other adjustable points attention sh
10. annually BRAKE LUBRICATION A high temperature waterproof grease in a Number 1 NLGI Grade is recommended for lubricating the brake actuating system It should be a smooth textured corrosion resistant grease free of filters and abrasives It should maintain a satisfactory softness under normal parking and storage temperatures so the brakes can be applied and released Vehicles operating in extremely cold weather below 40 require a grease conforming to MIL G 25013C 6 u WEDGE BRAKES AND CHAMBERS ON HIGHWAY AND OFF HIGHWAY On Highway Change whenever seals are replaced or when brakes are relined Off Highway Change grease every 12 months maximum whenever seals are replaced and when brakes are relined However the change interval may be shorter than 12 months depending on the severity of service operations This can be determined by initially schedualing an inspection of the internal parts and lubricant every 2 months until the first 12 month period has passed At each inspection look for contaminated or hard ened grease or for the lack of grease CAM BRAKES ON HIGHWAY AND OFF HIGHWAY On Highway Every 10 000 miles 16 000 km or every 6 months for all components depending on severity of service Off Highway For all components change grease every 4 months maximum whenever seals are replaced and brakes are relined However the change interval may be shorter than 4 months depending on the sever ity of serv
11. axle spring pads and springs The posi tionof the thick part of the shim will be determined by the direction in which the axle must be tilted in order to bringthe caster angle to the correct specification CAMBER Front wheel camber is controlled by the axle housings and cannot be changed TO CORRECT Call the Factory The application of heat will destroy the heat treatment and make the housing susceptible to distortion TOE IN Front wheel toe in is controlled by the length of the tie rod For smooth operation and ease of steering at highway speeds the axle has been adjusted such that the wheel mounting surfaces at the front are slightly closer together than on the rear side This difference should measure 1 8 1 6 TO CORRECT The length of the tie rod is adjusted by rotating the threaded end ends through a complete turn Turning the tie rod one way will slightly increase the toe in while rotating it the other way will slightly decreaseit with each turn In the event the tie rod becomes bent it should be replaced as it will again bend easily even though straight ened to its original form TIE ROD ENDS Tie rod yoke pins should be adjusted to eliminate lost motion Tie rod pins and bushings or ball sockets should be replaced if worn STEERING GEAR The steering gear should be adjusted to eliminate excessive looseness The standard original steering gear is used therefore the original service operation applies U
12. driver s door panel or small plate affixed to axle housing This will be a six 6 digit number See illustrations this page 2 Date unit was put into operation 3 Mileage of unit at time of failure 4 Nature of failure Upon receipt of the above you will be advised as to how to proceed with the claim ON HERRIN ar Gro ALL WHEEL DRIVE LOUISVILLE KENTUCKY U S A FACTORY ORDER NO INSTALLED BY Eee pee FRONT DRIVING AXLE __________ CAPACITY sid SERIALNO sd TRANSFER CASE _________ _________ 37 MARMON HERRINGTON WARRANTY This is to certify that we Marmon Herrington Company Louisville Kentucky warrant each new chassis remanu factured or assembly or part furnished for the remanufacture of a truck chassis against defects in material and workmanship under normal use and service Marmon Herrington s obligation under this warranty is limited to re placement of at our factory any part or parts thereof which shall within one 1 year after delivery of such vehicle to the final user but not later than eighteen 18 months after installation of the all wheel drive conversion kit or prior to the time when such vehicle has been operated twelve thousand 12 000 miles whichever first occurs be returned to us with transportation charges prepaid and which our examination shall disclose to our satisfaction to have been thus defective Service parts are manu
13. plug with new seal without longitudinal differential approx 9 01 19 pts 1 oil filling plug with longitudinal differential 2 oil drain plug approx 8 4 3 level plug 17 75 pts 4 breather ATTENTION Assure correct oil level Low level causes lack of lubrication and reduces durability Too high level causes excessive splashing and leads to overheating of transfer case wha 25 RTC SERIES TRANSFER CASES RTC 60 420 DRAIN OIL IN WARM CONDITIONS DRAIN LUBE THROUGH BOTTOM PLUG 2 CLEAN MAGNETIC PLUG AND REPLACE ADD LUBE THROUGH FILL PLUG 1 UNTIL LUBE JUST STARTS TO FLOW FROM PORT REPLACE PLUG LUBE QTY APPROX 5 5 PINTS 1 FILL AND LEVEL PLUG 2 DRAIN PLUG 3 VENT RTC MTC 60 DO NOT operate with unit in neutral except for towing The lube pump drive is on idler shaft thus top shaft does not receive lube in neutral position The same applies to 25 Series 4 100 1 FILL PLUG ES LG 0 4 SNA 2 LEVEL PLUG 3 DRAIN PLUG 4 VENT FILL FROM PLUG 1 UNTIL LUBE JUST STARTS TO FLOW FROM LEVEL PLUG 2 RTC 100 Drive shaft must be removed for towing Procedures for FAE and HI LO 0 shifting the same as MVG series 1 UN units m Aali AN Z ON 7 lt com 3 2 HL 1 ilk 1 rU Ics Sa STE Y AD ZA QE E E A
14. 0277 800 227 0727 Fax 502 253 0317 E mail info marmon herrington com JW06 02 Marmon Herrington Literature Order Form Literature available on line at www Marmon Herrington com Sales ere re Part Quantity MVG 750 Transfer Case TCSLOO1 MVG 1200 Transfer Case TCSLOO2 MVG 2000 Transfer Case TCSLOO3 8 Axle AXSLOO1 MT 10 Axle 51002 MT 11 Axle AXSLOO3 MT 14 Axle 51004 MT 17 Axle AXSLO05 MT 22 Axle 51 006 MT 23 Axle AXSLO07 2 Locking AXSLOOS 4 Page Brochure PRBROO1 Total Sales Literature Method of Payment Check Enclosed Purchase Order P O only w current M H Account Mastercard VISA Card Exp Date Authorized Card User s Signature Credit Card Orders Or Current Customers Purchase Orders May Be Faxed 502 253 0317 Ship Order to the following address MT 8 Axle AXPM001 MT 10 Axle 002 MT 14 Axle 004 MT 17 Axle 005 MT 23 Axle AXPM007 Sub Total Total Quantity Sales Literature KY Sales Tax Standard Shipping TOTAL Due Company Name Address City State Zip Code Country Postal Code Telephone Number Fax Number PLEASE MAKE COPIES OF THIS LITERATURE ORDER FORM AS NEEDED Extended Quantity Cost No Charge No Charge Call for current pricing 7 05
15. 9 FuPro FRDP 20 18 6 24 FuPro FRMP 20 24 6 30 FuPro FRFP 13 16 22 5 3 3 255 27 5 FuPro FRDP 14 18 2 8 20 8 FRMP 14 24 2 8 26 8 FRFP 14 22 5 2 8 25 3 SRDP 30 S 18 3 5 21 23 FuPro NOTE Capacities are based on installing angles of 3 degrees or less UMD 33 BRAKE LEVER ADJUSTING MT11 MT14 MT17 MT22 MT23 MODEL AXLES 1 brake lever 2 worm shaft 3 cam shaft Adjustment of the front brake is performed by turning off the worm gears of the adjustable brake lever Using a wrench turn the worm shaft until the brakes stop wheel rotation Now back off the worm shaft until only a slight drag is felt turning the wheel by hand The shoe clearance can be checked with a feeler guage through an opening in the brake cover plate 34 Cun AUTOMATIC SLACK ADJUSTER ITEMS 1 Adjusting plate 2 Setscrew hex dist 13 3 Setscrew hex dist 10 4 Plastic protection cap 5 Hex adjusting ring hex dist 32 6 Stop pin 7 Plastic thread protector The slack adjuster requires no mainenance since it is automatically readjusted according to brake lining wear When replacing the brake linings or after repairing the axle perform adjustment of the show clearance and automatic slack adjuster as follows ADJUSTMENT DATA A Distance between the chamber holder plane and the brake lever bore B Distance between the chamber holder plane and the brake lever bo
16. Check the oil level in the differential carrier and the hubs Check that the breather is working properly Check the overall condition of the axle possible oil leaks etc Inspect the condition of the planetary gears MAINTENANCE INTERVAL 1000 HOURS IN ADDITION Overhaul brakes per Brakes Workshop Manual Disassemble Clean wash and degrease all moving parts rollers and anchor bolts must be greased with heat resisting Molykote CU 7439 copper paste or equivalent Check the bushings and seals for wear Check the brake drums for heat cracks and wear re machining when necessary MAINTENANCE INTERVAL 5000 HOURS IN ADDITION THROUGH DRIVE AXLES ONLY Remove the inter axle differential and inspect and replace if necessary all excessively worn or damaged inter axle differential parts GREASING Grease all fittings according to the vehicle s standard schedule Grease quality for grease lubrication NLGI 2 Mobil Grease MP or comparable Please refer to appropriate service manual for correct fill and drain locations Sisu Axle Oil Capacities liters Axle Total Axle Total Hubs Hubs Hubs Hubs Axle Carrier Standard Cooled Standard Cooled Note FSDP 10 12 1 2 13 2 FSMP 10 17 1 2 18 2 FRDP 10 12 1 2 13 2 FRMP 10 17 1 2 18 2 FSDP 14 18 2 8 20 8 FSMP 14 24 2 8 26 8 FSFP 14 22 5 2 8 25 3 FSND 12 3 6 3 6 FRDP 13 16 18 3 3 21 23 FuPro FRMP 13 16 24 3 5 27 2
17. ag Mileage IN Mileage Out The Cause and Correction of the repair including detailed description of repairs and parts replaced The date the repair order was open and the date the repairs were completed The Work Authorization Number obtained from Customer Service Notes to Repair Facilities 1 Miscellaneous charges such as shop supplies must be listed as separate line items and shown on the final invoice as stated in Pre Repair Requirements Invoices for sublet repairs must be made available upon request All repairs must comply with any or all state and DOT requirements Downtime of vehicle and incurred costs associated due to the delay of parts shipments or any other condition beyond our control is not reimbursable and should not be listed on the invoice All failed parts that are required to be returned to Marmon Herrington must be received before payment will be made The Return Authorization will be sent with the replacement parts when shipped from Marmon Herrington All Claims must be submitted within 60 days of completion of repairs to be eligible for reimbursement For Work Authorization call 800 227 0727 ext 699 To Submit Claims by Fax 502 253 0317 Submit Claims by Mail to Marmon Herrington Company Customer Service Department 13001 Magisterial Drive Louisville KY 40223 Ap 39 40 NOTES UMD NOTES 41 42 Marmon Herrington 13001 Magisterial Drive Louisville 40223 502 253
18. al without longitudinal differential approx 6 4 13 5 pts il drain pl drain plug with longitudinal differential level plug A approx 5 5 breather 11 6 pt N 6 pts ATTENTION Assure correct oil level Low level causes lack of lubrication and reduces durability Too high level causes excessive splashing and leads to overheating of transfer case oil drain plug level plug breather MVG1200 OIL CHANGE recommended in warm condition drain gear oil at drain plug 1 clean magnet of drain plug mount drain plug with new seal fill new gear oil at filling bore level bore 2 until it flows over mount level plug 2 with new seal unscrew breather 3 clean it and mount it again OIL LEVEL CHECK open oil filling level plug 2 oil level must reach edge of level bore if neces sary top up mount level plug with new seal without longitudinal differential approx 4 6 9 7 pts with longitudinal differential approx 3 51 7 8 pts ATTENTION Assure correct oil level Low level causes lack of lubrication and reduces durability Too high level causes excessive splashing and leads to overheating of transfer case 24 MVG1600 1 Oil filling plug 2 Oil drain plug 3 Oil level plug 4 Breather Drain oil by unscrewing both oil drain plugs 2 2 V2180 Install oil drain plugs 2 with new seals Fill oil through oil filling bore 1 until it starts to overflow at oil level bore
19. ay 2 Apply grease until purging takes place at air hle in end of slip yoke NOTE Axle shaft cardan joints are not serviceable with pressurized grease F LUBRICATION OF TRANSFER CASE Use same type and viscosity of gear lube as used in the differential carrier Fill to the bottom of the fill hole DO NOT OVERFILL as this may cause the case to run hot or cause lubricant to be pumped out of the vent Transfer Case may be mounted at various approved angles by the vehicle manufacturer and normally should be filled to the bottom of the tapped hole Capacities will vary depending upon the angle of mounting Lubricant should be drained at 1 000 miles 1 600 km but no later than 3 000 miles 4 800 km Change every 10 000 miles 16 000 km or annually Drain the lubricant initially used in the assembly while the assembly is still warm Transfer Case SHOULD NOT be flushed with any solvent such as kerosene G MAGNETIC DRAIN PLUGS Any drive axle or transfer case while it is working generates wear particles at a fairly steady rate These wear particles are very fine but hard If these hard wear particles are allowed to circulate in the lubricant the anti friction bearings will wear at a faster rate than they would if the hard wear particles were removed as they are generated MAINTENANCE SCHEDULE AXLES 1 000 Miles 1 Change lube in differential and hubs no later than 3 000 miles 5 000 Miles 1 Re torque wheel nuts after 100 a
20. ceptions are those vehicles equipped with Marmon Herrington s Safe T Shift system SAFE T SHIFT In 2003 Marmon Herrington developed an electronic shift management system called Safe T Shift to help prevent shift on the fly events The system uses a micro processor that limits control functions to 5mph Speed information is sent from t case mounted speed sensor The transfer case relies on tooth alignment for internal gears to mesh and it may be necessary to allow the vehicle to roll forward or backwards several inches to complete the shift When selecting a shift function operators must wait for the ap propriate indicator to illuminate before accelerating to avoid costly internal damage SHIFT PROCEDURE 1 With the vehicle at a complete stop select the desired range axle position or PTO function desired 2 Place the main transmission in gear 3 Allow the vehicle to idle forward or backwards several inches until shift is completed evidenced by the appropriate indicator light 4 Accelerate normally In case of a manual transmission ease the clutch out in low gear allowing the vehicle to walk until shift is complete as per the appropriate dash indicator TORQUE Torque Shock or Torque Loading 15 a damaging mode of failure that is easily avoidable It generally occurs in situations when a vehicle is operating in an area of low traction at high RPM with the wheels spinning When the tires make abrupt conta
21. ct with a tractable surface a violent shock load is transmitted through the drive train This can result in damage to axles drive shafts transfer cases and transmissions Simply engaging the front axle and operating in low range at lower speeds will allow the vehicle to proceed without im parting undue stress on the drive train SUMMARY Before retreating from the subject of shifting it must be reemphasized that no transfer case PTO axle differential or power divider should ever be shifted while the vehicle is in motion The engagement of these components is intended for off road use only in poor traction conditions SAFETY SHIFT EXPLANATION AND DIAGNOSTIC SYSTEM The system is rated at 12v only 24v will permanently damage the module The module is passive and reacts only to chang es in motion allowing relay actuation based on sensor frequency and switch position The Safety Shift system design intent is to prevent the transfer case from shifting at speeds above 5mph Vehicle speed is monitored by a microprocessor that controls power to electric pneumatic solenoids that perform FAE and HI LO shifting SPEED SENSOR The system relies on speed information from the T Case mounted speed sensor The speed sensor must be within one millimeter of the tone ring to operate properly When torqued correctly the sensor head will be within 0 004 of the tooth head and perform normally At 0 008 the sensor will no longer be able to read
22. er case If the same lubricant is not available drain and refill B CHECKING LEVEL Remove filler plug Lubricant should be level with bottom of tapped filler hole AIR VENTS Check every 2 000 miles 3 200 km Clean in solvent SCHEDULED MAINTENANCE SERVICES COMPONENT CODE Front Axle Differential Carrier 1 2 4 6 Steering Axle Wheel Ends 2 5 6 Brake Lubrication 2 6 Tie Rod Lubrication 3 6 Drag Link Lubrication 3 6 Drivelines Lubrication 2 3 6 Transfer Case Lubrication 1 2 4 6 Wheel Bearing Lubrication 5 6 CODE 1 Change after first 1 000 miles 1 600 km 2 Check each 1 000 miles 1 600 km 3 Lubricant every 2 000 miles 3 200 km 4 Drain and refill every 10 000 miles 16 000 km 5 Repack every 10 000 miles 16 000 km 6 More frequent intervals may be required under adverse operating conditions LUBRICATION GUIDE TRANSFER CASE MODELS MVG750 MVG1200 MVG2000 SERVICE AND MAINTENANCE OIL CHANGE AND OIL LEVEL CHECK MVG750 OIL CHANGE recommended in warm condition drain gear oil at drain plug 1 clean magnet of drain plug mount drain plug with new seal fill new gear oil at filling bore level bore 2 until it flows over mount level plug 2 with new seal unscrew breather 3 clean it and mount it again OIL LEVEL CHECK open oil filling level plug 2 oil level must reach edge of level bore if neces sary top up mount level plug with new se
23. factured to the same standards as production installed parts However since the installa tion thereof as well as the age and condition of the receiving vehicle are beyond the control of Marmon Herrington Service Parts are warranted for a period of ninety 90 days or five thousand 5 000 miles whichever first occurs All other regular warranty conditions apply On vehicles operating OVERSEAS the determination of defects will be made at Marmon Herrington Company Louisville Kentucky from complete information supplied in writing by overseas distributors or recognized acting distributors Complete information is defined to mean vehicle serial number user s name date of delivery mileage at time of breakage date of breakage type of service nature of break or fault distributor s recommendation for our guidance only and any other pertinent information After determination of our obligation any parts to be replaced will be shipped to distributor or acting distributor in accordance with his instructions This warranty is in lieu of all other warranties expressed or implied and of all other obligations or liabilities incurred by Marmon Herrington Marmon Herrington neither assumes nor authorizes any other person to assume any other liability in connection with this sale including but not limited to indirect or consequential damages This warranty shall not apply to any vehicle which shall have been repaired or altered in any way so as in our judg
24. gs 7 tie rod ball joints CARDAN JOINT SERVICE The Cardan Joint caps are fitted with plugged threaded ports that are used for disassembly assembly While these ports will accept a stan dard zerk fitting we recommend that only a needle attachments be used to flow lube into these joints Adding lube under pressure may result in the failure of the cup seal fig 1 MANUAL SLACK ADJUSTERS MT10 MT11 32 OIL LEVEL OF WHEEL HUBS MT14 MT17 MT22 MT23 1 Plug for OIL FILLING and inspection hole 2 Plug for DRAIN hole A Line of OIL LEVEL MT14 MT17 FRONT AXLE HUB 21 R f MT22 MT23 FRONT AXLE HUB DA SERVICE AND MAINTENANCE RECOMMENDATIONS FOR SISU AXLES IN THE SPECIAL TRANSPORT APPLICATIONS Axle types Sisu Rigid Hub Reduction Drive Axles with S Cam Drum Brakes FIRST SERVICE AT 125 HOURS Change the oil in the differential carrier and the hubs Check and adjust if necessary the wheel bearings Check the overall condition of the axle possible oil leaks etc MAINTENANCE INTERVAL 250 HOURS Check and adjust if necessary the wheel hub bearings MAINTENANCE INTERVAL 500 HOURS IN ADDITION Change the oil in the differential carrier and the hubs if no oil analysis based oil changing system in use e Check the adjustment and the proper operation of the slack adjusters e Check the brake lining thickness if less than 6 mm the linings have to be replaced
25. ice operation This can be determined by initially scheduling an inspection of internal parts At each inspection look for contaminated or hardened grease or for the lack of grease D LUBRICATION OF TIE ROD AND DRAG LINK Use the same type of grease as for the wheel bearings E LUBRICATION OF DRIVELINES Off Highway The change interval will differ greatly and be determined largely on the type of vehicle or machinery being used type of operation and severity of service The lubricant change interval could be for example one 1 day maximum or three 3 months maximum This can be determined by initially schedul ing daily or weekly inspections of universal joint shaft and slip yoke parts Check seals bearings splines etc and check condition of grease in the assemblies by purging with new grease Look for contaminated or hardened grease or for the lack of grease Also check to make sure grease purges from all four 4 bearing and seal positions of the cross LUBRICATION PROCEDURES FOR UNIVERSAL JOINTS DRIVE SHAFTS ONLY 1 Check for looseness 2 Apply grease 3 Observe lube purging from all seals until new grease comes out 4 If grease does not purge manipulate the U joint until purging occurs 5 If the above is not successful remove cup or joint and check old grease If rusty gritty or burnt replace the complete universal joint LUBRICATION PROCEDURES FOR SLIP YOKES AND SPLINES 1 Check for looseness or sidepl
26. ility is aware of and complies with the guidelines of this policy To expedite the authorization process you will need the Sales Order Number or S number found on the front of this certifi cate You will also need the Vehicle Identification Number or the last six digits of the VIN the date the vehicle was placed in service and the current mileage Please note the following This Warranty Registration should have been submitted at the time of delivery If our records do not include a warranty registration you must complete one before any authorization for repair can be issued We will make them available by mail or fax upon request Marmon Herrington will pre approve 5 hours diagnosis inspection time prior to your call for repair authorization If the diagno sis inspection complaint does not reveal a warrantable failure or result in a warrantable repair the customer will be respon sible for all charges including diagnosis inspection time The Operators Manual contains information covering proper equipment use and maintenance schedules Operators must adhere to these guidelines to be eligible for reimbursement and service records must be provided upon request Pre Repair Requirements 1 Authorization for repairs will require a written estimate repair order of costs after determination that a warrantable condition is found to exist 2 Estimates must contain the following information A list of all parts necessary for s
27. l level plug hubs Oil fill and drain plugs hubs Vent and vent tube wheel ends Oil level and drain plugs housing Differential vent housing Lube fittings at brake arms SOY VY dm S I Slack adjuster SERVICE AND MAINTENANCE HIGH PRESSURE CLEANING When using high pressure cleaning equipment it should be applied in such a way that the water jet does not penetrate the shaft oil seals the cleaning water does not enter through the breather orifices PRESERVATION FOR STORAGE The transfer case should be stored inside a room with low air circulation with maximum relative humidity of 60 and a temperature between 15 and 20 C We recommend to issue storage cards to keep record of the preservation details and dates Our transfer cases were filled for the test run in our factory The remaining quantity of oil protects the unit temporarily against corrosion If intending to store the unit for more than 4 months carry out the following preservation procedure 1 Remove breather and seal bore by means of suitable plug 2 Fill gear oil according to instruction chapter oil change and maintenance 3 Rotate transfer cases in such a way that all interior surfaces are coated with oil 4 Turn shafts and at the same time shift twice every position of all shifting cylinders see chapter handling When storage conditions are favorable less than 6096 humidity repeat procedure points 3 5 every 6 moths When condi
28. l oil cooler connection electronic speedometer connection input drive direction counter clockwise synchronization ADM DESIGN MVG 1600 with differential MVG 2000 a fos 12 ZZ 31 SS EJ n NS x a A Ile A n c Cross section MVG 2000 The MVG 1600 MVG 2000 with differential 3 shaft design 2 speed transfer case with clockwise input drive direc tion view to input flange Housing two parts Bearing application Lubrication Shifting Front drive Options Input shaft taper roller bearings Intermediate shaft cylinder roller bearings Output shaft tapered roller bearings and differential and needle bearing Front output shaft roller bearing slide bearing Rear drive cylinder roller bearing 4 point bearing splash lubrication or splash force feed lubrication with pump on input shaft for the executions with PTO and for external oil cooling system mechanical 3 positions pneumatic 2 or 3 positions pneumatic differential pneumatically lockable pneumatic operation PTO rear engine drive version pump fitting at front and rear side external oil cooler connection electronic speedometer connection input drive direction counter clockwise synchronization ADM 19 DESCRIPTION Shift mechanism Pneumatic Shifting High and Low 3 positions without return spring Ashes TE A ST SHS 1
29. ltage 5v and 5v pulse signals at the Black and Green wires with the wheels turning This can be performed with the rear axle on jacks while turning wheels by hand only 4 wn PROCESS No power to switches or module Check wiring and fuses No signal to speed sensor Check wiring and connectors before replacing module Signal TO sensor but no RETURN signal Check wiring connectors and sensor RETURN signal from sensor but no solenoid function Check switches and wiring before replacing module Power to solenoids but no shift function Check switches and wiring before replacing solenoid SYSTEM WIRING BLACK 5v to speed sensor GREEN 5v to speed sensor ORANGE 9 14v from AWD switch YELLOW 9 14v from HI LO switch BROWN battery to AWD solenoid BLUE battery to HI LO solenoid RED battery positive GREY power to speed sensor WHITE 2 common ground UMD INTRODUCTION The efficiency and life of mechanical equipment is as dependent on proper lubrication as it is on proper engineering design The importance of proper lubrication is increased because of greater gear tooth and bearing pressures and higher speeds in present day vehicles For this reason we are vitally interested in promoting widespread usage of the best possible lubricants for our products It is advisable to consider the reputation of the refiner or vendor when selecting a lubricant He is responsible for the quality and correct application of his p
30. nd 500 miles then every 5 000 miles thereafter 2 Clean vent and vent tubes 3 Check operation of differential lock control pressure switch 10 000 Miles 1 Change lube in differential and hubs 2 Lube brake cam bushings and brake levers 15 000 Miles 1 Check shoe clearance and brake lining wear 30 000 Miles 1 Check brake shoes drums and parts for wear 2 Check and re torque mounting bolts 3 Lube brake shoe rollers 60 000 Miles Check and adjust wheel bearings Note Change lube annually if vehicle operates less than prescribed mileage periods MAINTENANCE SCHEDULE TRANSFER CASES 1 000 Miles Change Lube 10 000 Miles Change lube and check vent every 10 000 miles Note Change lube annually if vehicle operates less than prescribed mileage periods Viscosity is dependant on ambient regional temperature Tropic Zone SAE 85W 140 Normal Zone SAE 85W 90 SAE 85W 140 SAE 90 Frigid Zone SAE 80W SAE 75W 140 SAE 75W 90 LUBRICATION GUIDE Acceptable Grades 26C to 386 14 8 to 100F BP hypergear EP Castrol EXP Dynadrive 80W 90 ELF Tranself TYPE B ESSO Gear Oil GX 80W 90 GX D85W 90 MOBIL Mobilube HD Shell Spirax HD Total Transmission TM 85W 90 Lithium Based Lube Grease Specification NLGI 2EP Acceptable Grades MOL LZS 2 EP AGIP GR MU EP2 SHELL Alvania EP2 Use AGIP AUTOL TOP 2000 for brake rollers Lubrication and Inspection Points Axles Oi
31. ould be given to these items Normal wear is slight but develops more rapidly as looseness occurs If a unit is operated for a long length of time with a prevailing perceptible looseness it will impose a pounding action on the parts involved This may result in severe damage or destruction of parts and cause the necessity of replacement This service repair can be avoided by preventive maintenance in eliminating the looseness as it develops by performing the necessary adjustments TROUBLE SHOOTING PROBLEM POSSIBLE CAUSE Transfer case or axle Improper lubrication running Hot Excessive driveline or Driveline imbalance gear noise Improper lubrication Loose or worn parts Steering instability Wheels and or tires out of balance shimmy Over or under inflated tires Worn or loose parts Improper lubrication Overload Excessive or uneven Wheels and or tires out of balance tire wear Improper alignment Over or under inflated tires uq 29 30 LUBRICATION GUIDE FRONT DRIVING STEER AXLES MODELS MT10 11 MT14 17 MT22 23 MODEL MT10 11 MT14 17 MT22 23 AXLE AXLE AXLE WHEELENDS Tints 2 0 pints DIFFERENTIAL 17 0 pints 17 0 pints 17 0 pints NOTE All capacities approximate MT14 MT17 MT22 MT23 LUBRICATION POINTS Fig 1 and 2 1 oil level check amp filter bore screw plug 2 oil drain bore screw plug 3 vent valve 4 steering swivel bearings bottom top 5 slack adjuster 6 brake camshaft bearin
32. pecific job and if applicable all parts that will be invoiced back to Marmon Herrington The cost of disassembly inspection and diagnosis of any portion of the vehicle to determine extent of repairs needed Current labor costs reflecting both hourly rate and number of hours to effect repairs must be listed Miscellaneous charges such as shop supplies must be defined Actual dollar amounts must be listed as percentages will not be accepted Sublet repairs must also be defined and included in the estimate at their actual dollar amount NOTE If it becomes necessary to exceed the original estimate in terms of parts or labor the repair facility must call Marmon Herrington Customer Service for additional authorization 3 Only the use of Marmon Herrington supplied parts will constitute reimbursement unless prior approval has been obtained Parts Ordering 1 While Marmon Herrington operates a full service Parts Department replacement parts needed to effect Warranty repairs must be acquired through Customer Service to be eligible for reimbursement Post Repair requirements The final invoice or work order must include the following Customer s name address and phone number The Vehicle Identification number The Sales Order Number or S number which the customer can provide or can be located on the ID tag fixed to the transfer case or axle The Axle or Transfer Case Model and Serial Number also located on the ID t
33. re Brake lever installation radius D Brake lever installation radius a Adjusting position of the brake lever and the shoe clearance Remove setscrews 2 3 Take care of the plastic thread protector 7 Remove the adjusting plate 1 and the plastic protection cap 4 By turning the hex adjusting ring 5 to proper direction adjust for the specified distance between the seating surface and the brake lever bore Start adjustment from a distance greater than specified If required also adjust the push rod clevis After the above operation adjust the shoe clearance to 0 3 0 6 mm az 35 36 REPLACEMENT PARTS When ordering replacement parts for MARMON HERRINGTON ALL WHEEL DRIVE conversions the following information should be given 1 FACTORY ORDER NUMBER found on I D Plate on driver s door panel or small plate affixed to axle housing This will be a six 6 digit number See illustrations this page 2 Component for which parts are required i e front drive axle or transfer case 3 Model of axle and or transfer i e MR 90 MR 226 The information necessary for replacement parts and or warranty claim procedures will be found on either plate design MARMON HERRINGTON SALES ORDER TYPE 0 ___ WARRANTY CLAIM PROCEDURE When ordering parts which you feel might be covered under warranty advise the following information 1 FACTORY ORDER NUMBER found on Plate on
34. roduct A high quality lubricant incorrectly applied may greatly reduce the maximum service built into our product Past experience has proven that a large portion of service problems can be traced to an improper lubricant or to an incorrect lubricant application Our purpose in compiling these specifications is to provide a guide to aid in the selection of a lubricant which will render the most satisfactory service We recommend a good quality gear lube for use in our axles and transfer cases Suitable grades include 75w 90 thru 85w 140 and SAE90 Synthetics or mineral products are both appropriate LUBRICATION A LUBRICATION OF THE FRONT AXLE DIFFERENTIAL CARRIER With new axles the original lubricant should be drained at 1 000 miles 1 600 km but no later than 3 000 miles 4 800 km Change every 10 000 miles 16 000 km or annually Drain the lubricant initially used in the assembly while the assembly is still warm Axles SHOULD NOT be flushed with any solvent such as kerosene All new axles should be checked for correct oil level before being placed into service Fill axle housings to bottom of level hole in carrier and or housing with specified lubricant with the vehicle on level ground The most satisfactory results will be obtained only when the lubricant is of the correct viscosity API GL 5 or MILL2105B For general use use SAE 85 140 EP Multi Viscosity gear lube Higher or lower viscosity may be required for extremely hot or cold
35. th differential 2222 pd r1 22222 F i e N Pam ES N N b gt 7 pe 1222 Aa 6 pms o a 222244 zen N N SS ns vA MVG 750 with differential 3 shaft design 2 speed transfer case with clockwise input drive direction The spur gear planetary differential has a torque distribution ratio between front and rear axle of 1 2 00 Housing Bearing application Lubrication Shifting Front drive Options two pieces aluminum Input shaft cylinder roller and 4 point bearing Intermediate shaft cylinder roller bearings Output shaft tapered roller bearings and differential and needle bearing Front output shaft roller bearing slide bearing splash lubrication or splash force feed lubrication with pump at input shaft pneumatic 2 or 3 positions pneumatic differential pneumatically lockable pneumatic operation PTO synchronization ADM Cross section VG 1200 type 7120 DESIGN MVG 1200 without differential Hiph 5 SIS 4 AA AR EAS SEUS y The MVG 1200 without differential 3 shaft design 2 speed transfer case with clockwise input drive direction Housing Bearing application Lubrication Shifting Front drive
36. tions are extreme arctic or tropical high humidity high variation of temperature storage location is near to sea repeat procedure points 3 5 every four months CAUTION Before putting the transfer case into use the breather must be installed 10 qup DESCRIPTION TECHNICAL DATA TRANSFER CASE INPUT TORQUE INPUT SPEED WEIGHT APPROX RATIO eee wm eee m m use wm Mese meer CI meer ume wm wm DESIGN MVG 750 without differential J 0 0 ETT 2 1 aa TE Ra 5 1 mr oe me al ROW 2 wa BS e a ESS The MVG 750 without differential 3 shaft design 2 speed transfer case with clockwise input drive direction Housing two pieces aluminum Bearing Input shaft cylinder roller and 4 point bearing application Intermediate shaft cylinder roller bearings Output shaft tapered roller bearings Front output shaft roller bearing slide bearing Lubrication splash lubrication or splash force feed lubrication with pump at input shaft Shifting pneumatic 2 or 3 positions Front drive pneumatic operation Options pneumatic operation PTO synchronization ADM 4 DESIGN MVG 750 wi
37. u 5 PRI DOF FRONT AXLE CASTER CASTER Backward tilt of king pin at top To cause front wheels to run straight normally straighten up after turn and give trailling action to wheels CA M B E R CAMBER Outward tilt of front wheels at top To bring road contact point of wheel more nearly under center of load j Important tire saving adjustment TOE IN Drawing together of front wheels at front at hub height To prevent excessive tire wear KING PIN INCLINATION KING PIN INCLINATION Inward tilt of king pin at top to compensate for shearing action on king pin which would result if wheels were left vertical and had no camber and 3 no king pin inclination DRAG LINK amp TIE ROD NOMENCLATURE The term DRAG LINK is the component that connects the Front Axle steering arm to the steering gear box The term TIE ROD is the component that connects the left and right front axle wheels 28 ADJUSTMENTS CASTER A change in axle caster could indicate front axle housing distortion which might be caused by a minor accident or a permanent set in the front springs This is read by a protractor mounted on the pinion U joint Consult the respective axle specifications to deter mine the actual caster reading TO CORRECT If front springs are badly distorted it is advisable to install new leaves or complete new springs It may only be necessary to install tapered shims between the front
38. weather VENTS When filling wheel ends take care not to over fill the hubs This results in lube being pumped up the vent tube and out the vent When this occurs enough lube can be purged to cause heat damage to the planetary system If lube is observed leaking from the vent the vent and it s tube must be removed and flushed with solvent This cleans the inner walls of residual lube which can cause a capillary effect resulting in continued siphon ing Ensure correct lube level after reinstalling tube and vent B FRONT DRIVE STEERING AXLE WHEEL ENDS UNIVERSAL JOINTS BEARINGS BUSHINGS AND KNUCKLE PINS The frequency of lubricant changes depends upon individual operating conditions speed and loads Change when ever seals are replaced or when brakes are relined or at 10 000 miles 16 000 km or annually Use a high grade Lithium chassis lubricant that conforms to NLGI 2EP requirements 1 Check for looseness 2 Apply grease 3 Observe lube purging except in the case of cardon joints 4 Ifthe above is not successful remove cup or joint and check old grease If rusty gritty or burned replace NOTE Axle shaft cardan joints are not serviceable with pressurized grease IMPORTANT At rebuild time before installing wheel bearings onto spindle coat bearing journals with a film of grease to deter fretting corrosion Apply 1 16 on spindle hub and knead into the bearings Apply by hand repack every 10 000 miles 16 000 km or
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