TMC TRAILER AXLE SERVICE MANUAL DRUM BRAKE AXLES
Contents
1. TAAL TMC Axle Mfg Sdn Bhd TMC Trailer Axle Service Manual Drum Brakes TMC TRAILER AXLE SERVICE MANUAL DRUM BRAKE AXLES TMC Axle Manufacturing Sdn Bhd 79 amp 81 Jalan 5 10B Spring Crest Industrial Park 68100 Batu Caves Kuala Lumpur Malaysia Telephone Facsimile E mail Engineered To Move 2010 A member of The BE rumas Group 60 3 6187 7788 60 3 6187 6722 info tmc com m Page 1 of 24 TAAL TMC Axle Mfg Sdn Bhd TMC Trailer Axle Service Manual Drum Brakes RECOMMENDED SERVICE SCHEDULE First Service 500 km or on Delivery Check torque settings of all wheel nuts On delivery After all wheel changes After first 5 000 Km Check and adjust all wheel bearings Every 5 000 km or Monthly Check ABS if applicable for proper operation Check secondary and parking brake system if applicable for proper operation Check tires and wheels torque wheel nuts to proper torque Check axle fluid level add fluid if required Check wheel seals for leaks Inflate tires to proper pressure Inspect brake system gladhands hoses tubing chambers valves and reservoirs for leaks or damage Check chamber push rod travel and adjust brakes Check and adjust the brakes Check lining thickness remove dust shields if necessary Do not remove wheels Visually check axle alignment Every 25 000 km or Quarterly Lubric2. i AAT Te hin see Len N ra A N EA oF a PFRD 245 168 266 168 FS ii ew ia w A Su ae x LN es i OA a 2010 A member of The BE rumas ue Page 23 of 24 TAAL TMC Axle Mfg Sdn Bhd TMC Trailer Axle Service Manual Drum Brakes SPARE PARTS AXLE MODELS PFRD 245 168 and PFRD 266 168 Axles with 420 diameter x 220 wide brakes 16 12 x 8 Item Model PFRD 245 168 Part Number Model PFRD 266 168 Part Number Description 1 804345 804345 Hub cap grease 5 800110 800110 Axle spindle adjusting nut 6 800111 800111 Axle spindle lock washer 9 800064 800064 Outer bearing cone 10 810220 810243 Brake drum 10 stud x 335 pcd 420x220 11 800089 881002 Hub assembly 10 x 335 ISO steel 12 810094 810094 Cam roller 13 800018 800018 Cam roller retainer 14 800016 800016 Brake return spring 15 800002 800002 Anchor pin bush 16 800015 800015 Brake retainer spring anchor end 17 800168 800168 Brake shoe Q brake 18 810226 810226 Brake lining set inc rivets 19 800013 800013 Brake return spring retainer pin 20 800014 800014 Anchor pin Q brake 21 800004 800004 Dust co
3. installation on the axle or initial re adjustment of the brakes after brake relines All automatic slack adjusters have a specific set up and installation procedure as specified by the automatic slack adjuster manufacturer This procedure must be adhered to If in doubt contact the manufacturer of the automatic slack adjusters or the manufacturer s agent for these specific procedures Generally automatic slack adjusters must be re adjusted similarly to the manual slack adjusters on initial installation or after brake relines Caution Please refer to the manufacturer s recommendations 2010 A member of The AE lrumas Group Page 13 of 24 TAAL TMC Axle Mfg Sdn Bhd TMC Trailer Axle Service Manual Drum Brakes AXLE HUB LUBRICATION Grease Filled Hubs 1 The wheel bearings must be fully packed with grease it is recommended that a wheel bearing packer or suitable equipment is used to correctly pack the wheel bearings with grease 2 Fill the hub cavity with grease as shown The cavity is to be filled to a line running from inner bearing cup inner diameter to outer bearing cup inner diameter Caution Do not overfill the hub cavity 3 After the final assembly of the hub onto the axle end a smear of grease should be applied to the inside of the hubcap and over the axle spindle nut s and lock washer D FILL THE GREASE IN HU
4. diameter x 180 wide brakes 16 5 x 7 PERD 2002 167 4 11 PFRD 225 PFRD 245 2010 A member of The rumas ue Page 20 of 24 TAAL TMC Axle Mfg Sdn Bhd TMC Trailer Axle Service Manual Drum Brakes SPARE PARTS AXLE MODELS PFRD 225 167 and PFRD 245 167 Axles with 420 diameter x 180 wide brakes 16 12 x 7 Item Model PFRD 225 167 Part Number Model PFRD 245 167 Part Number Description 1 810146 804345 Hub cap grease 810176 Hub cap oil 2 810147 Hub cap gasket 3 9HBM08 125020 Hub cap stud M8 x 20 long 4 9SWMO08 Spring washer 5 810124 800110 Axle spindle adjusting nut 6 810123 800111 Axle spindle lock washer 7 810125 Axle spindle lock nut 9 810133 01 800064 Outer bearing cone 10 810110 Brake drum 5 spoke spider 420x180 810160 810168 Brake drum 10 stud x 285 pcd 420x180 810158 810158 Brake drum 10 stud x 335 pcd 42
5. installation BEARING INSTALLATION WARNING Wheel seals should be installed before performing the wheel bearing adjustment procedure 1 Coat inner bearing with lubricant recommended for your application Install inner bearing 2 Install wheel taking care not to unseat or bend the oil seal 3 Coat outer bearing with lubricant recommended for your application Install outer bearing 4 Slip on axle washer 2010 A member of The AE lrumas Group Page 8 of 24 TAAL TMC Axle Mfg Sdn Bhd TMC Trailer Axle Service Manual Drum Brakes WHEEL BEARING ADJUSTMENT PROCEDURE Castellated Single Nut Parallel Spindle TP Wheel Bearings It is recommended that the wheel bearing in new axles or whenever the wheel bearings are replaced in service are adjusted after the first 5 000 km The wheel bearings should then be adjusted at 100 000 km intervals for the axle s service life These are the minimum recommended service requirements dependent on service conditions more frequent service and maintenance schedules may be required for correct operation of the trailer axle Recommended wheel bearing adjustment procedure 1 Install bearings and wheel or hub on axle 2 Install bearing tab washer 3 Install wheel bearing adjusting nut Screw nut against the bearing tab washer 4 Ensure that the hub rotates freely in both directions If any brake drag binding is felt temporal
6. recommended service requirements dependant on service conditions more frequent service and maintenance schedules may be required for correct operation of the trailer axle 10 Stud x 285 ped Hub 8 Stud x 275 ped Hub 420 x 180 Brake 335 x 210 Brake 10 Stud x 335 ped Hub 10 Stud x 225 ped Hub 5 Spoke Spider Hub 420 x 220 Brake 335 x 210 Brake 420 x 180 Brake As TMC s policy is one of continuous development we therefore reserve the right to change or modify the specifications without notification 2010 A member of The Sfirumas Group Page 3 of 24 TAAL TMC Axle Mfg Sdn Bhd TMC Trailer Axle Service Manual Drum Brakes BRAKE HUB BEARINGS AND SEAL REMOVAL OUTER BEARING COTTER CONE PIN INNER BEARING CONE AXLE WASHER AXLE SPINDLE OUTER BEARING CUP BRAKE DRUM AND WHEEL INNER BEARING CUP LUBE SEAL WARNING Always wear eye protection when working on an axle NOTE Remove the brake hub only when perform servicing on wheel bearings and hub seal No removal of brake hub is needed for servicing brakes on TMC outboard designed axles 1 Release the breaks DY Or 2 Using a suitable socket remove the hubcap NOTE The socket used to remove the hubcap is also used to remove the single axle nut 3 On axle with a single axle nut e Remove the cotter pin from the axle nut e Remove the axle nut and washer from the spindle 4 On axle with the double lock
7. the two brake retaining springs 9 Make sure the brake linings are clean 10 Install the brake drum 11 Adjust the brakes as described in this manual 12 Lubricate the camshaft bearings with the specified grease 2010 A member of The Trumas Group Page 7 of 24 TAAL TMC Axle Mfg Sdn Bhd TMC Trailer Axle Service Manual Drum Brakes HUB SEAL INSTALLATION The following instructions apply to installing hub seals in new TMC axle beam assemblies and servicing TMC complete axle assemblies WARNING To avoid damaging the wheel seal support the hub and drum until the outer bearing cone and adjusting nut are installed 1 If installing the seal on a new TMC axle beam assembly remove the protective coating from the bearing spindle threads wheel seal surfaces and cotter pin holes If installing the seal in an in service axle go to Step 2 2 Remove all dirt chips and hanging burrs from wheel or hubcap making sure they are clean and dry WARNING Never install the seal in the hub and then force it into the axle spindle by tightening the axle nut 3 Using seal installation tool place seal on spindle with printing FLUID SIDE facing the end of the spindle Tap lightly to seat seal 4 Rotate the seal installation tool in V4 turn intervals until the seal is properly seated with the metal face of the seal flush with the inner shoulder of the axle spindle 5 Check for burrs or chips after
8. 0x180 11 810108 Hub assembly 5 spoke spider 810102 810166 Hub assembly 10 x 285 ISO steel 810156 800089 Hub assembly 10 x 335 ISO steel 8106395 Hub assembly 10 x 285 ISO aluminium 8105366 Hub assembly 10 x 335 ISO aluminium 12 810094 810094 Cam roller 13 800018 800018 Cam roller retainer 810093 Cam roller retainer bolt on 14 800016 800016 Brake return spring 15 800002 800002 Anchor pin bush 16 800015 800015 Brake retainer spring anchor end 17 800167 800167 Brake shoe Q brake 810170 Brake shoe P brake 18 810171 810171 Brake lining set inc rivets 19 800013 800013 Brake return spring retainer pin 20 800014 800014 Anchor pin Q brake 810092 Anchor pin P brake bolt on 21 800003 800003 Dust cover 22 9HBM08 125025 9HBM08 125025 Dust cover bolt M8 x 25 long 23 810130 contact TMC 810139 contact TMC Axle beam assembly 24 810112 Wheel stud spider hub 810148 810148 Wheel stud M22 ISO x 125mm long 810144 810144 Wheel stud M22 ISO x 100mm short 25 810133 02 800065 Outer bearing cup 26 810132 02 800065 Inner bearing cup 27 810135 800723 Hub seal 28 800052 800052 Slack adjuster 29 800001 800001 Inner camshaft bushing 30 800009 1 1 Inner camshaft bracket 9HBM10150030 9HBM10150030 Bolt M10 x 30 long 31 800005 805861 Outer camshaft bushing 2010 A member of The g gl rumas Group Page 21 of 24 TAAL TMC Axle Mfg Sdn Bhd TMC
9. B CAVITY TO THIS LINE BEARING CUP _ BEARING CUP eo S s E ZA aon Pa x Oil Filled Hubs 1 Remove the rubber plug or screwed plug from the hubcap so that the oil can be added to the hub 2 Fill the hub with oil to the full level on the sight glass in the hubcap window 3 Allow time for the oil to flow through the wheel bearings Top up the hub with oil to the full mark Caution Do not overfill the hub 4 Refit the rubber plug or screwed plug back into the hubcap Check that the plug seals 2010 A member of The Trumas Group Page 14 of 24 TAAL TMC Axle Mfg Sdn Bhd TMC Trailer Axle Service Manual Drum Brakes OIL FILLER PLUG D 3 RED RUBBER PLUG s A OIL FILL LEVEL ee HA yf OIL HUBCAP 6 BOLT TYPE OIL HUBCAP SCREW IN TYPE WHEEL BEARING LUBRICANTS Grease Mobil HP or an approved equivalent grease Oil Mobil 85W 140 or an approved equivalent oil WELDING TO TMC AXLE BEAMS Recommended welding procedures L Before any welding is conducted on the axle tube the axle tube must be pre heated to 100 1500C locally at the area to which the welding is to be done Caution Do not apply excessive heat to the axle tube 2 All welding is to be applied to the axle tube as near as possible to the axle s neutral axis Do not weld circumferentially around the axle tube 3 It is recommended that all welds are a
10. Trailer Axle Service Manual Drum Brakes Item Model PFRD 225 167 Model PFRD 245 167 Description Part Number Part Number 32 800032 800032 Camshaft seal 33 810122 810122 Camshaft washer 1 2 34 800034 800034 Circlip 1 35 810117 606L 810117 606L Camshaft 37 spline left hand 810117 606R 810117 606R Camshaft 37 spline right hand 36 810132 01 800064 Inner bearing cone 37 810122 810122 Camshaft washer 4 38 810121 810121 Circlip 1 4 39 810113 Wheel nut spider 810145 810145 Wheel nut M22 ISO 40 810206 Enclosed cam tube assembly 41 810201 Enclosed cam tube support plate 42 810208 Enclosed cam tube seal outer 43 810207 Enclosed cam tube seal inner 44 810114 Hub drum bolt and conelock nut assy W UNE x 214 810169 810169 ABS pole wheel 100 tooth 810K88 Camshaft Repair Kit Item 29 31 33 34 37 38 2010 A member of The AE lrumas Group Page 22 of 24 TAAL TMC Axle Mfg Sdn Bhd TMC Trailer Axle Service Manual Drum Brakes SPARE PARTS AXLE MODELS PFRD 245 168 and PFRD 266 168 Axles with 420 diameter x 220 wide brakes 16 12 x 8 8 gia Ac AR 9 ee a pa a ae i Ti oe EA iT SS ee F fe oe T i PETTI ao i ee ii a ff a fo m N Y
11. ate slack adjusters and camshaft bushings using an EP2 type grease or equivalent With the axle end lifted rotate the wheels and determine if the wheel bearing s need adjustment Inspect brake drums and wheels Inspect brake linkage and shoes Inspect brake lines and hoses for chafing looseness and deterioration Test brakes for action side pull and synchronization If equipped with ABS run complete system check Perform soap suds leak test on entire air system Drain reservoirs Check axle alignment Every 100 000 km or Annually Remove the hubcaps and inspect the wheel bearings and lubricant Replace the lubricant if it appears badly contaminated Re adjust the wheel bearings and re torque the axle lock nut Replace the hubcaps and ensure the correct amount of lubricant is in the hub end Check that the hubcap gasket is not damaged Replace as necessary Check the axle for brake wear check the rest of the axle components for wear or damage Repair adjust or replace as necessary Every 300 000 km or 3 years 2010 Remove wash and inspect the wheel bearings replace as necessary When re assembling the wheel bearings ensure they are correctly lubricated and adjusted See TMC s recommended wheel bearing adjustment procedures A member of The AE lrumas Group Page 2 of 24 TAAL TMC Axle Mfg Sdn Bhd TMC Trailer Axle Service Manual Drum Brakes Note These are the minimum
12. ese wheel studs 400 440 Nm 34 UNC Spider wheel studs 200 260 Nm Inner Camshaft Bracket Bolts M10 bolt and nut 30 35 Nm Dust Cover Bolts M8 studs 20 25 Nm Hub Cap Bolts M8 studs 20 25 Nm 5 16 UNC studs 20 25 Nm A member of The AE lrumas Group 2010 Page 17 of 24 TAAL TMC Axle Mfg Sdn Bhd TMC Trailer Axle Service Manual Drum Brakes TROUBLESHOOTING GUIDE Problem Brakes will not release Probable Cause Corrective Action Probable Cause Corrective Action Probable Cause Corrective Action Probable Cause Corrective Action Brake shoes bound up at anchor pins Lubricate brake operating parts Brake hoses restricted Replace hoses Brakes out of adjustment Adjust brakes Damaged brake assembly Replace or repair as required Problem No brakes or insufficient brakes Probable Cause Corrective Action Probable Cause Corrective Action Probable Cause Corrective Action Probable Cause Corrective Action Problem Dog tracking Problem 2010 Probable Cause Corrective Action Probable Cause Corrective Action Probable Cause Corrective Action Probable Cause Corrective Action Probable Cause Corrective Action Probable Cause Corrective Action Probable Cause Corrective Action Probable Cause Corrective Action Probable Cause Corrective Action Probable Cau
13. f equipped with a drive pin P Model brakes remove this pin first Remove the anchor pin bushing if necessary Insert a screwdriver into the brake shoe and press the retaining tab of the cam roller clip while gently pulling the roller 8 While maintaining pressure on the roller turn the brake shoe over and Insert a screwdriver into the brake shoe and press the retaining tab of the opposite cam roller clip while gently pulling the roller 9 Remove the roller and dip from the brake shoe 10 Remove the roller from the dip and inspect for damage ANCHOR PIN PRESS No ANCHOR PIN NOTE Inspect brake shoes and drum for wear Follow brake manufacturer guidelines for minimum brake shoe thickness and maximum brake drum Inner diameter A general guideline for replacing brake shoes is when the lining thickness is 1 4 Inch or less or when the lining rivets have begun to contact the drum Brake Shoe Installation 1 Install the cam roller into the roller dip UPPER 2 Install the roller and clip into the brake shoe BRAKE SHOE 3 Install the anchor pin bushings if removed in the SHOE spider RETURN 4 Coat anchor pins completely with grease and install SPRING anchor pins 5 Connect the brake return spring to the brake shoes 6 Position the roller of the upper spring to the brake shoes 7 Position the lower brake shoe in the cam head and then place the other end of the hoe against the anchor pin 8 Install
14. he camshaft bearings with the specified grease 2010 A member of The AE lrumas Group FORWARD WHEEL ROTATION CAMSHAFT 4 ROTATION REQUIRED GREASE FITTING Page 12 of 24 TAAL TMC Axle Mfg Sdn Bhd TMC Trailer Axle Service Manual Drum Brakes BRAKE ADJUSTMENT MANUAL SLACK ADJUSTERS S Cam brakes are adjusted by the manual slack adjusters fitted to the camshafts on the axle l With the brakes released adjust the slack adjuster until the brake linings contact the brake drum This is done by rotating the 19mm hexagonal nut clockwise 2 Adjust the 19mm hexagonal nut back one half turn or until the hub rotates freely with no brake drag evident 3 Finally check that with the brakes released and applied that the angle between the brake chamber push rod and slack adjuster is greater that 90 degrees The angle can be adjusted by screwing the push rod clevis backwards or forwards along the push rod thread to achieve the correct angle When finished always check that the push rod clevises lock nut is tightened Released Applied lt 1 Do Me 19mm Hex adjusting nut BRAKE ADJUSTMENT MANUAL SLACK ADJUSTER BRAKE ADJUSTMENT AUTOMATIC SLACK ADJUSTERS S cam brakes fitted with automatic slack adjusters should require no manual adjustment after the initial
15. ic base grease or oil with an organic mineral base lubricant Do not spin fry bearing cones with compressed air Bearing damage may result After removing the axle hub clean excess grease from the bearing cones Inspect bearing cones for damaged rollers Inspect bearing cups for damage to raceway If any damage is found replace the affected cone and cup as a set 2010 A member of The AE lrumas Group Page 5 of 24 TAAL TMC Axle Mfg Sdn Bhd TMC Trailer Axle Service Manual Drum Brakes BRAKE COMPONENTS BRAKE LINING BRAKE SHOE SINGLE CASTELLATED SLACK yas ADJUSTER BRACKET s cam ANCHOR PIN BRAKE SHOE RETURN SPRING BRAK HARDENED WASHER E SPIDER BEARING JOURNAL NOTE No removal of brake hub is needed for servicing brakes on TMC outboard designed axles BRAKE SPRING PLIERS Brake Shoe Removal 1 Manually release the brakes 2 Remove the brake drum 3 Remove the two brake retaining springs 4 To remove the brake shoes e Press down on the lower brake shoe to disengage it from the anchor pin e Move the lower shoe to the side of the anchor bracket e Lift the upper and lower shoes still connected by brake return spring from the anchor plate 2010 A member of The Erumas Group Page 6 of 24 TAAL TMC Axle Mfg Sdn Bhd TMC Trailer Axle Service Manual Drum Brakes 5 Remove the anchor pins I
16. ly back off the brake adjustment to ensure free rotation of the hub 5 Rotate the hub in both directions and at the same time tighten the wheel bearing adjusting nut until a torque setting of 150 180 Nm is reached 6 Then back off the adjustment nut so that the cotter pin can be installed in the first hole T Install cotter pin and lock in place LOCK WASHER SPINDLE ADJUSTING COTTOR PIN NUT CHECK WHEEL BEARING END FLOAT IS 0 08mm TO 0 20mm RE ADJUST IF NECESSARY 2010 A member of The Arumas Group Page 9 of 24 TAAL TMC Axle Mfg Sdn Bhd TMC Trailer Axle Service Manual Drum Brakes SLACK ADJUSTER REMOVAL 1 Remove the cotter pin that secures the slack CLEVIS PIN adjuster brake chamber clevis pin Remove the clevis pin se SLACK ADJUSTER 2 Remove the snap ring and washer that secure the slack adjuster to the camshaft Remove the slack adjuster 2010 A member of The AE lrumas Group Page 10 of 24 TAAL TMC Axle Mfg Sdn Bhd TMC Trailer Axle Service Manual Drum Brakes CAMSHAFT AND CAMSHAFT BEARING REMOVAL BRAKE SPIDER ANCHOR PIN BUSHING CAMSHAFT RETAINER O RING ae jii ES O R RETAINER pey Remove the brake shoe and slack adjuster as described in this manual Remove the retainers from both ends of the camshaft 3 Remove the camshaft by sliding it out of the axle CAMSHAFT housing and bushings It may be necessary to
17. nut e Remove the outer axle nut and spacer tab washer e Bend the lock washer tab securing the adjustment nut back away from the nut e Remove the adjustment nut lock washer and slotted washer from the spindle 5 On axle with industry standard double lock nut e Remove set screw from the spindle tab washer e Remove the outer jam nut and the spindle tab washer e Remove adjustment nut 6 Remove the hub washer from the spindle 7 Remove the outer hub bearing from the spindle 2010 A member of The rumas Group Page 4 of 24 TAAL TMC Axle Mfg Sdn Bhd TMC Trailer Axle Service Manual Drum Brakes WARNING Do not hit steel parts with a steel hammer Parts can break and flying fragments can cause injury 8 Remove the hub from the spindle It may be necessary to tap the hub with a soft mallet to release the hub seal from the spindle 9 Remove the inner hub bearing from the spindle or the inside of the hub WARNING Do not use a chisel to cut the seal The shoulder can be damaged resulting in a leak 10 Remove the wheel seal from the spindle by gently tapping with a soft mallet You can also use an appropriate pry bar to pry the seal off the spindle being not to gouge the shoulder REMOVING BRAKE DRUM NOTE The seal may have come off the spindle when the hub was removed WHEEL BEARING INSPECTION WARNING Please thoroughly clean bearing surfaces and cones Do not mix a synthet
18. pplied using small multiple fillet weld runs to achieve the desired finished weld fillet size 4 All welds must be conducted using low hydrogen rods or an approved equivalent MIG process 2010 A member of The Trumas Group Page 15 of 24 TAAL TMC Axle Mfg Sdn Bhd TMC Trailer Axle Service Manual Drum Brakes ABS SENSOR REPLACEMENT NOTE ABS sensors must match the system Do not mix sensors from different manufacturers Removal 1 Manually release the brakes 2 Remove the drum 3 Disconnect the ABS sensor connector 4 Remove the sensor from the sensor holder by pulling straight out 5 Remove the sensor retaining spring clip if necessary ABS Sensor Installation NOTE be sure to use the correct spring clip for the sensor being installed d 2 mew 2010 Install the sensor retaining spring clip if removed Into the sensor holder Install the ABS sensor into the spring dip and sensor holder Push the sensor in until it contacts the tooth wheel Connect the ABS sensor connector Install the brake drum if using outboard drum Adjust brakes as described in this manual SENSOR A member of The i gl rumas SENSOR SPRING CLIP HOLDER SPRING CLIP TAB rp Page 16 of 24 TAAL TMC Axle Mfg Sdn Bhd TMC Trailer Axle Service Manual Drum Brakes TORQUE SETTINGS CHART Wheel nuts M22 ISO wheel studs 550 600 Nm M20 Japan
19. se Corrective Action Probable Cause Corrective Action Source of air supply shut off at tractor Open cutout cocks at rear of tractor cab or push control valve IN Low brake line pressure Check air pressure gauge on tractor inoperative compressor Brake lines between tractor and trailer not properly coupled Properly couple brake lines Reservoir drain cook open Close drain cock Leaf spring broken Replace complete spring Bent axle Replace or straighten axle Frame or suspension out of alignment Straighten frame or align axles Uneven tire wear Over or under inflation Inflate to proper pressure Loose wheel stud nuts or clamps Tighten wheel stud nuts or clamps Loose or tight wheel bearing adjustment Adjust bearings Axle bent or out of alignment Straighten align or replace axle Tires not properly matched Match tires Improper acting brakes Correct brakes as required Rapid stopping Apply brakes slowly when approaching stop High speed driving on turns Reduce speed A member of The AE lrumas Group Page 18 of 24 TAAL TMC Axle Mfg Sdn Bhd TMC Trailer Axle Service Manual Drum Brakes Problem Problem Problem Problem Problem 2010 Probable Cause Corrective Action Probable Cause Corrective Action Probable Cause Corrective Action Probable Cause Corrective Action Probable Cause Corrective Action Probable Cause Corrective Ac
20. tap the 4 end of the shaft with a soft mallet to release it from ye the bushings 4 Remove the two bolts and nuts securing the camshaft bracket to the axle housing 5 Remove the remaining two bolts from the camshaft bracket and remove the bushing from the bracket 6 Inspect bushings for wear and deterioration Replace as necessary i CIRCLIP CAMSHAFT BRACKET A member of The Erumas Group 2010 Page 11 of 24 TAAL TMC Axle Mfg Sdn Bhd TMC Trailer Axle Service Manual Drum Brakes CAMSHAFT AND CAMSHAFT BEARING INSTALLATION Brake Camshaft Rotation Cam brakes must be installed so the rotation of the camshaft is in the same direction as the brake drum when the vehicle is moving forward 1 Clean the camshaft assembly 2 Clean the faces of the anchor bracket and camshaft bracket 3 Assemble camshaft bearing and seals into the camshaft bracket Install the two bracket bolts and nuts and tighten to 20 30 ft lbs 27 41 Nm 4 Attach the camshaft bracket to the axle securing it with the remaining bolts and nuts Tighten the bolts to 35 45 ft lbs 47 61 Nm 5 Install the camshaft bearing assembly and O rings into the spider 6 Install the camshaft by sliding it into the bearing in the spider and the camshaft bracket 7 Install the snap rings at both ends of the camshaft 8 Install the slack adjuster and brake shoes as described in this manual 9 Lubricate t
21. tion Probable Cause Corrective Action Probable Cause Corrective Action Probable Cause Corrective Action Probable Cause Probable Cause Corrective Action Probable Cause Corrective Action Probable Cause Corrective Action Probable Cause Corrective Action Grabbing brakes Oil grease or foreign material on brake lining Reline brakes Brakes out of alignment Adjust brakes Brake drum out of round Replace brake drum Damaged brake chamber or internal assembly Replace or repair as required Leaky or broken hose between relay valve and brake chamber Replace or repair as required Excessive heat cracks on drum Rapid stopping or poor air flow to brakes Replace drum Brake dragging Out of adjustment Adjust brakes Binding cam anchor pins or chamber rod end pin Lubricate and free up Damaged brake assembly or brake drum out of round Replace or repair as required ABS inoperable Refer to ABS manufacturer s service literature Slow brake application or release Lack of lubrication Lubricate brake operating parts Excessive travel in brake chamber push rod Adjust brakes Restriction in hose or lines Repair or replace Defective brake valve Replace brake valve A member of The AE lrumas Group Page 19 of 24 TAAL TMC Axle Mfg Sdn Bhd TMC Trailer Axle Service Manual Drum Brakes SPARE PARTS AXLE MODELS PFRD 225 167 and PFRD 245 167 Axles with 420
22. ver 22 9HBMO08 125025 9HBM08 125025 Dust cover bolt M8 x 25 long 23 810222 contact TMC 881020 contact TMC Axle beam assembly 24 810144 Wheel stud M22 ISO x 100mm short 810148 Wheel stud M22 ISO x 125mm long 810400 Wheel stud M24 ISO x 115mm 25 800065 800065 Outer bearing cup 26 800065 881004 02 Inner bearing cup 27 800723 881007 Hub seal 28 800052 800052 Slack adjuster 29 800001 800001 Inner camshaft bushing 30 800009 11 800009 11 Inner camshaft bracket 9HBM10150030 9HBM10150030 Bolt M10 x 30 long 31 800005 805861 Outer camshaft bushing 32 800032 Camshaft seal 33 810122 810122 Camshaft washer 1 2 34 800034 800034 Circlip 1 35 810117 606L 810117 606L Camshaft 37 spline left hand 810117 606R 810117 606R Camshaft 37 spline right hand 36 800064 881004 01 Inner bearing cone 37 810122 810122 Camshaft washer 1 4 38 810121 810121 Circlip 1 4 39 810145 Wheel nut M22 ISO 810401 Wheel nut M24 ISO 810169 810169 ABS pole wheel 100 tooth 810K88 Camshaft Repair Kit Item 29 31 33 34 37 38 2010 A member of The g gl rumas Group Page 24 of 24
Download Pdf Manuals
Related Search