124 PFRV Service Manual Printer 10-14-09.indd
Contents
1. RELIEF VALVE FUNCTION Secondary Port Primary Port PRO OAD T y Vo TT iw i IT SE IN WES ANaNNN n NI NY l 4 w_I Relief Valve INS NOR ey NI aay OJ F ZZ enw WRX h ws Adjustment Screw No Relief Plug The 124 PRIORITY FLOW CONTROL RELIEF VALVE COVER pump has an optional built in adjustable relief valve with settings from 1000 to 3300 PSI 69 to 228 BAR This relief valve is meant to be used as the primary port circuit protection A main system relief valve is still required for the secondary port adjusted to the systems required pressure setting Individual port reliefs are still required for particular functions that have a lower pressure setting requirement than that of the main system relief setting NEVER EXCEED THE MAXIMUM PUMP PRESSURE RATING The 124 series has a maximum pressure rating of 3500 PSI 241 BAR for 50 through 1 25 gear widths 3300 PSI 228 BAR for 1 50 gear width 2900 PSI 200 BAR for 1 75 gear width and 2500 PSI 172 BAR for 2 00 gear width PERMGL 1500 Frost Road Streetsboro Ohio 44241 PARTS BREAKDOWN CW tandem unit shown for reference Priority Valve Cover PV sold as complete unit parts shown for reference only Item Description Part Qty Item Description Part Qty 1 Shaft End Cover SAE A 2 Bolt shown 574 01218 ah 16 Spring 514C L0011 1 Port End Cover 1 2 JIC2. 124 SERIES PRIORITY FLOW CONTROL RELIEF VALVE PORT END COVER PUMP PORT LOCATIONS NFPA Solutions through A motion technology Secondary Port rear location available in 1 2 5 8 or 3 4 SAE Straight Thread ODT Metric Straight Thread Primary Port rear location available in 1 2 5 8 or 3 4 SAE Straight Thread ODT Metric Straight Thread Suction Port side location available in 7 8 1 or 1 1 4 SAE Straight Thread ODT Metric Straight Thread BSPP SAE Split Flange or Metric Split Flange PERMCO 1500 Frost Road Streetsboro Ohio 44241 The LEE she i IF 3 16 ws a T7 E aaa aaa ges Primary Port side location 2 48 optional normally plugged at 1 2 SAE Straight Thread ooo ODT consult factory for options NS A 1 50 ANSI B92 1 96 11 Spline shaft shown other shafts available B 1 18 11 Spline shaft shown other shafts available C 6 28 plus gear width D 0 4 plus gear width E 3 250 SAE A 2 bolt shaft end cover shown other shaft end covers available CW view shown consult factory for all options NATIONAL TRUCK EQUIPMENT ASSOCIATION Member FLOW CONTROL FUNCTION The 124 SERIES PRIORITY FLOW CONTROL COVER allows a constant preset flow of oil from the primary port to a machine function regardless of changes in pump speed or increased demand from other circuits however the pump output flow must
3. be equal too or greater than the primary circuit flow requirements Output flow from the primary port can be specified from 1 to 12 GPM 3 78 to 45 Liter and is controlled to within 10 of nominal flow Flow is controlled by a fixed orifice and is not field adjustable Excess flow is available through the secondary port for a downstream machine function or can be plumbed back to tank The pressure compensated valve spool allows the primary and secondary ports to be pressurized independently or at the same time The primary port has an optional built in relief valve with settings from 1000 to 3300 PSI 69 to 228 BAR that relieves to the pump inlet Consult factory for optional relief valve settings When sizing the pump it is important to take into consideration the desired primary flow secondary flow use of secondary flow operating RPM operating temperature time dumping over relief and other factors to prevent burning of the pump Consult factory for assistance FLOW CONTROL FUNCTION ADJUSTMENT Orifice Spool eS SS J 514C L0013 07 IN A N TRUS Ns ON ise Dy EENI NITS S G The 124 SERIES FLOW CONTROL COVER pump has an easily changeable controlled flow orifice spool The orifice spool slides into the spool bore and can be easily removed for changing the desired system flow or can be drilled out to a larger size for increased flow Consult factory for flows and drill sizes not listed
4. damaging debris and contamination is still within the system hoses cylinders control valves filters and hydraulic tank The systems main relief valve and system port reliefs can also be affected a malfunctioning relief or port relief can severely damage the pump To insure the hydraulic system is properly flushed and the relief valve are working properly refer to your vehicle body manufacturers service manual for hydraulic and filtration system cleaning details Before you begin operating the pump back off the systems main relief valve to a O PSI setting Run the pump at engine idle RPM s for about 5 minutes or until oil heats up at O PSI with all the control valves in the neutral position If everything seems to function properly and no unusual noises are heard gradually adjust the main relief valve to the required system pressure setting Refer to your vehicle body manufacturers service manual for adjusting relief valve details Never exceed the pressure rating of the pump Permco Phone 330 626 2801 Permco Tianjin Fluidpower Mfg Co Permco TianJin Hydraulics Inc Ltd 1500 Frost Rd Fax 330 626 2805 Fenghua Industrial Park 236 Jinbindadao Free Trade Zone P O Box 2068 e mail info permco com 9th Avenue TianJin Port China streetsboro OH 44241 www permco com TEDA China PC 300457 e mail technic permcotj com www permcotj com Copyright 2009 Permco all rights reserved 2009 Bulletin 09 124PV SM
5. S X 1 2 JIC P See Below 1 17 O ring included with plug part 18 2 3 Gear Housing 577 01109 15 2 18 Plug ODT 7 8 14 565 01598 2 4 Bearing Carrier 1 1 4 SF X 3 4 JIC shown 576 01127 1 19 Screw 514C LO006 1 5 Shaft Gear Set 11 Spline shown 024 01344 15 1 20 Hex Nut 514C L0008 l 6 Gear Set 996 01103 15 1 21 O ring 9995 01599 1 7 Connecting Shaft 022 01125 k 22 O ring 995 01600 1 8 Thrust Plate 947 01105 4 23 Backup Ring 514 01601 1 9 Shaft Seal 226 01121 al 24 Poppet Floating 514C L0007 il 10 Bushing 921 01108 8 25 Spring 514C L0009 1 11 Dowel Pin not shown 280 1971 071 8 26 Plug ODT 3 4 16 not shown W046 39 Al 12 Housing Gasket Seal TA 2995 152 4 27 O ring included with plug part 26 1 13 Thrust Plate Seal 947 01107 4 28 Stud ZE 0391 11 5 4 14 Thrust Plate Backup Seal 9947 01106 4 29 Nut W3 40 4 15 Spool See page 2 for part number 514C L0013 1 30 Washer not shown W033 1 4 MODEL CODING The pump code for the 124 series priority flow relief valve cover series should be put into the model code as described below The code consist of the PV which represent the priority valve plus 5 additional characters detailing the porting flow rate and relief setting PV 1 2 3 4 5 1 INLET PORT 4 FLOW RATE 5 RELIEF SETTING Sample Model Code P124A082PVEDFLFZA15 54 JIC SF BSPP MSF MST 1GPM A No Relief A 12345 Blan
6. ery high viscosities may dictate not using a suction strainer Consult your vehicle body manufacturers service manual for filtration details HOSE SELECTION Selecting the proper hose size and type is critical to proper system operation and hydraulic component longevity Fluid velocities and pressure are determining factors reference your hose manufacturing catalog for actual hose selection Recommended Fluid Velocities Recommended Hose Type PS LS nE 4 Feet per Second IMEE LING rnin SAE 100R4 Pressure LANG aeaniee 15 Feet per Second Pressure LING cen scecnacascensgiceni SAE 100R2 or higher Return Line 8 Feet per Second Return Bypass Line SAE 100R1 SHAFT ALIGNMENT To assure maximum pump and drive line life proper mounting of the pump is critical In front mount applications the pump should be mounted parallel to the engine crankshaft within 1 5 Universal joints need to be in phase and the drive line should be balanced to the maximum operating engine RPM Shaft offset should be between 3 7 PTO direct mount units should have anti Seize grease applied to the pump and PTO shaft splines annual re applications are suggested along with semi annual re applications for severe duty cycles refer to your PTO and or vehicle body maintenance guide REPLACEMENT PUMP If you are replacing a pump on a system that has had a pump failure it is important that the hydraulic system be thoroughly cleaned to protect your new pump Often
7. f 150 300 SUS 32 65 CST at 100 F 38 C Normal operating viscosity range is between 10 1000 SUS 16 220 CST Maximum start up viscosity should not exceed 4000 SUS Oil should have maximum anti wear properties foam depressant rust and corrosion inhibitors oxidation stability of 1500 hours minimum along with a low flash and fire point Other desirable characteristics include a high demulsibility low emulsibility for separation of water air and contaminants resistance to the formation of sludges acids gums tars and varnishes Operation in cold conditions requires special oil consideration so maximum start up viscosity is not exceeded Under normal conditions of continuous operation fluid temperature should not exceed 150 F 65 C In no instance should the temperature exceed 185 F 85 C for mineral based fluids For water glycol and invert emulsions information consult factory Maximum inlet vacuum not to exceed 5 IN HG 17 BAR or a positive pressure greater than 20 PSI 1 37 BAR Degassing of the fluid and subsequent cavitation may occur if these values are exceeded FILTRATION For maximum pump life the system should be protected from contamination at a level not to exceed 250 particles greater than 10 micrometers per milliliter of fluid A 10 micrometer return line filter with a B 10 rating of at least 2 2 should provide this level of purity A 149 micrometer suction strainer is also suggested for added pump protection however v
8. k A A A A A 2GPM C 1000 PSI B PV Priority Valve Cover es CEN PENES 2 Inet Port 1 1 4 E K Q y Z 5GPM J 1750 PSI E 2 Primary Port 6GPM L 2000 PSI F 3 Secondary Port 2 amp 3 PRIMARY AND SECONDARY PORT 7GPM N 2250 PSI G 4 Priority Flow Rate in GPM JIC BSPP MST 8GPM Q 2500 PSI H 5 Relief Valve Setting Blank A A A 9 GPM S 2750 PSI J 1 2 D J P 10 GPM U 3000 PSI K No Relief Plug Part 514C L0017 5 8 2 K Q 11GPM W 3250 PSI L 3 4 F L R 12 GPM Y PV Cover Assembly Part Number 124PV PV Model Code from above Example of PV Cover Assembly Part Number 124PV AAAAA or 124PV AAAAB Build Program PV Kit 124PV EDEGF Customer Specified Part Number Due to hundreds of variations and combinations consult factory for assistance After pump testing PV cover must be disassembled thoroughly cleaned and reassembled residual break in contamination can cause the PV to malfunction Cap Screws and Nuts Torque to 120 Ib ft 1 2 GW W1 69 3 4 GW W1 090 1 GW W1 090 1 1 4 GW W1 15 1 1 2 GW W1 15 1 3 4 GW W1 099 2 GW W1 099 Studs add 2 1 2 to standard flush and extended stud length for PV cover The product described herein including without limitation product features specification and design are subject to change by Permco without notice OIL SPECIFICATIONS Use premium quality hydraulic fluid with a viscosity range o
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