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Model 70160 Variable Displacement Piston Pump

Repair Information

EN-801

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Summary of Contents for 70160

Page 1: ...Model 70160 Variable Displacement Piston Pump Repair Information EN 801...

Page 2: ...emove the pump from the application Cleanliness is extremely important Clean the port areas thoroughly before disconnecting the hydraulic lines Plug the pump ports and cover the open hydraulic lines i...

Page 3: ...mounting flange A Product Number Description 70160 Single Piston Pump 78162 Single Piston Pump with Gear Pump 78161 Tandem Piston Pumps 78163 Tandem Piston Pumps with Gear Pump B Sequential Numbering...

Page 4: ...n below is typical of a righthand rotation pump 30 3 1 Press Fit 6 5 4 1 Shaft assembly for rear pump of tandem Shaft assembly for single pump or front pump of tandem 1 7 7 8 8 8 8 9 10 10 9 10 10 11...

Page 5: ...0160 Parts Drawing 2 2 1 2 2 26 26 27 27 28 28 37 37 K4 4 2 1 2 2 26 26 19 2 27A 27B 28A 55 1 49 55 2 55 3 55 4 49 1 55 55 5 37 35 36 55 1 55 55 2 55 4 55 5 49 49 1 34 34 1 32 K2 1 K2 2 K2 3 32 K3 1 3...

Page 6: ...Sub Assembly 24 1 Coverplate Sub Assembly 26 2 Dowel Pin 27 2 Cap Screws 5 16 18 50 8 mm 2 in Long 27A 2 Cap Screws 5 16 18 82 6 mm 3 25 in Long 27B 2 Cap Screws 5 16 18 88 9 mm 3 5 in Long 28 2 Cap...

Page 7: ...18 mm I D 097 in Dia x 755 in I D 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 Sc...

Page 8: ...of the standard or high pressure type The 6 9 to 10 3 bar 100 to 150 PSI standard spring and poppet are shown on the bottom and the optional high pressure 13 7 to 20 7 bar 200 to 300 PSI spring and po...

Page 9: ...mbly Note This valve plate may have stuck to the backplate assembly that was previously removed 22 Valveplate directional rotation CW or CCW is identified by the location of the metering slots located...

Page 10: ...tion the pump assembly to remove opposite cover plate The bearing cup in this cover plate is press fit and not removable Repeat steps 30 through 31 32b Remove the slip fit bearing on the non control a...

Page 11: ...nformation manual for number 8 Place the bearing cup into trunnion cover over the crush ring or shims see Figure 40 9 Lubricate and install the o ring seal into counter bore of housing see Figure 41 1...

Page 12: ...arefully install the backplate assembly by aligning it with the dowel pins located in the pump housing Use caution not to dislodge the valve plate see Figure 54 25 Align the spline of the gerotor s in...

Page 13: ...ission problems Match the transmission symptoms with the problem statements and follow the action steps shown in the box diagrams This will provide help in correcting minor problems eliminating unnece...

Page 14: ...Level in Reservoir Fill to Proper Level 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 Moto...

Page 15: ...ace Symptom Operates in One Direction 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 Pump Bypass V...

Page 16: ...Charge Relief 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 use...

Page 17: ...i L i i L V i v v iV i V i 6 i v v i i i i i L V L i i iV 6 i v v i i v i n iV i V ii i v i V i V ii v i i i i L L V i i i V i i V i iV i i i ii v i v V v i i i L V i i v i i iv i i iV i i i ii v i v...

Page 18: ...t off the fuel flow to the injectors 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...

Page 19: ...19 EATON Hydraulics 70160 Variable Displacement Piston Pump Repair Information E PUPI TS005 E June 2004 Model 70160 Notes...

Page 20: ...Eaton 14615 Lone Oak Road Eden Prairie MN 55344 USA Tel 952 937 9800 Fax 952 974 7722 www hydraulics eaton com Eaton Dr Reckeweg Str 1 D 76532 Baden Baden Germany Tel 49 7221 682 0 Fax 49 7221 682 788...

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