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Form No. 7-623
November, 1993

Copyright Eaton Corporation, 1993
All Rights Reserved
Printed in USA

Eaton Corporation

15151 Hwy. 5
Eden Prairie, MN 55344
Telephone 612/937-9800
Fax 612/937-7130

Hydraulics Division

Eaton Ltd.

Glenrothes, Fife
Scotland, KY7 4NW
Telephone 44/592-771-771
Fax 44/592-773-184

Hydraulics Division

Order parts from number 6-632 Parts Information booklet.
Each order must include the following information.
1. Product and/or Part Number
2. Serial Code Number
3. Part Name
4. Quantity

Summary of Contents for 70142

Page 1: ...5 Eaton Medium Duty Piston Pump Repair Information Model 70142 70144 20 3 cm3 r 1 24 in3 r Displacement and 70145 23 6 cm3 r 1 44 in3 r Displacement Variable Displacement Piston Pump design code 01 02...

Page 2: ...ss is extremely important Clean the port areas thoroughly before disconnecting the hydraulic lines Plug the pump ports and cover the open hydraulic lines immediately after they re disconnected Drain t...

Page 3: ...on Pumps 23 6 cm3 r 1 44 in3 r with Gear Pump A B C D Single Pump Product Number 7 0 1 4 2 R A A 0 1 Required Tools 7 16 in Hex Key Allen 9 16 in End Wrench 1 in End Wrench 9 16 in Socket 1 2 in Socke...

Page 4: ...assembly for rear pump of tandem Shaft assembly for single pump or front pump of tandem 50 50 1 51 51 1 1 7 7 8 8 8 8 9 10 10 9 10 10 11 11 13 13 14 15 15 16 17 17 22 23 24 25 30 29 48 12 6 Model 7014...

Page 5: ...7 K4 4 2 1 2 2 26 26 21 20 18 19 19 1 19 19 1 18 2 27A 27B 28A 49 1 49 49 2 49 3 49 4 49 5 37 35 36 49 1 49 49 2 49 3 49 4 49 5 34 34 1 32 K2 1 K2 2 K2 3 32 K3 1 31 K3 2 33 K3 3 K3 K2 32 K4 1 K4 2 K4...

Page 6: ...for Port C 21 1 Relief Valve for Port D 22 1 Inner Race 23 1 Seal Cover 24 1 Trunnion Cover 25 1 Cover O ring 26 2 Dowel Pin 27 2 Cap Screws 5 16 18 50 8 mm 2 in Long 28 2 Cap Screws 5 16 18 63 5 mm...

Page 7: ...Dia x 468 in ID Mounting Kits K1 1 Tandem Piston Pump Mounting Kit K1 1 1 35T Coupler 36 8 mm 1 45 in long K1 2 1 O ring 1 59 mm Dia x 101 6 mm ID 0625 in Dia x 4 in ID K1 3 2 Cap Screws K1 4 2 Washer...

Page 8: ...lange End of Housing Figure 1 4 12 Discard the shaft seal gaskets and o rings from all assemblies Replace with new seals upon reassembly Disassembly The following instructions apply to a variable disp...

Page 9: ...with camplate Check all parts for proper position before proceeding 9 Clamp pump assembly in a protected jaw vise with the open end of the housing up Install gasket and two dowel pins onto housing 10...

Page 10: ...Gerotor Pocket 2 41 mm 095 in Flange Figure 1 2 Disassembly Charge Pump Adapter Assembly 1 Remove spring retainer spring and poppet from adapter assembly Inspection Inspect the charge pump relief valv...

Page 11: ...the retaining ring should not be removed without compressing the spring safely The following parts are required to disassemble the piston block 2 ea 5 16 in I D x 15 16 in O D flat washers 1 ea 5 16...

Page 12: ...ransmission problems Match the transmission symptoms with the problem statements and follow the action steps shown in the box diagrams This will give expedient aid in correcting minor problems elimina...

Page 13: ...el Defective Below Level Repair or Replace Check System Pressure Reduce System Load High OK 9 Inspect Charge Relief Valve OK 11 Inspect Charge Pump 13 Inspect Motor 12 Inspect Inlet Screen or Filter R...

Page 14: ...om Operates in One Diection Only Inspect Servo Control If used OK OK OK 2 7 Defective Repair or Replace Inspect Motor 12 Replace Clogged Check Charge Pressure 10 Low OK Inspect Dump Valve If used Repl...

Page 15: ...lief Valve OK 11 Inspect Charge Pump 13 Inspect Motor 12 Inspect Inlet Screen or Filter Replace Clogged OK 8 Check Charge Pressure 10 Low OK OK Replace Pump Motor Inspect Servo Control If used OK 2 In...

Page 16: ...nt or broken c misadjusted damaged or broken neutral return spring 2 Inspect Servo Control Valve for if used a proper inlet pressure b misadjusted damaged or broken neutral return spring c galled or s...

Page 17: ...njectors and turn the engine over for 15 seconds 5 Replace the coil wire or return the fuel flow to the injectors Place the transmission unit in the neutral position start the engine and run it at a l...

Page 18: ...18 18 Model 70142 70144 and 70145 Notes...

Page 19: ...19 19 Model 70142 70144 and 70145 Notes...

Page 20: ...Telephone 612 937 9800 Fax 612 937 7130 Hydraulics Division Eaton Ltd Glenrothes Fife Scotland KY7 4NW Telephone 44 592 771 771 Fax 44 592 773 184 Hydraulics Division Order parts from number 6 632 Pa...

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