Eaton 70142 Скачать руководство пользователя страница 9

9

9

Model 70142 / 70144 and 70145

Reassembly

Reassembly

1

All parts should be cleaned and critical moving parts

lubricated before reassembly.

2

If necessary, press new bearing in housing to dimension

shown in figure 1-4 with the numbered end of bearing outward.

3

Starting with the camplate, insert camplate into the housing

with the long trunnion side down and to the appropriate side of
linkage on the machine.

4

 On the short trunnion side of camplate install bearing

(bearing with numbered side to the inside of pump), bearing
race (race with chamfer toward inside of pump), washer, o-ring,
o-ring cover, trunnion cover, and retain with two screws.
Torque screws 4.1 to 5.4 N

.

m [36 to 48 lbf

.

in].

5

 On the long trunnion side of camplate install bearing

(bearing with numbered side to the inside of pump),  washer,
trunnion shaft seal, seal cover, and retain with two screws.
Torque screws 4.1 to 5.4 N

.

m [36 to 48 lbf

.

in].

6

To install shaft, place exterior retaining ring, thrust race,

thrust bearing, second thrust race, and second retaining ring
onto shaft. Position washer and shaft seal or spacer onto shaft.

7

Install shaft assembly into front of housing: For units with

spacer, retain with interior retaining ring and go on to step 8.
For units with shaft seal, seat seal into position with seal driver
and retain with interior retaining ring.

Refer to Appendix B for reassembly of rotating kit assembly.

8

With flange end of housing up, position rotating kit

assembly onto shaft and into housing. Align the spline within
the piston block with shaft internal spline. Make sure piston
block is engaged fully to put piston shoes in contact 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 If necessary, press new bearing and roll pin in backplate to
dimension shown in figure 1-3. Bearing installed with the
numbered end outward. Roll pin installed with split oriented
away from bearing.

11 Install new o-ring on relief valves. Install relief valve in its
original cavity in backplate that it was removed. Torque 128 to
142 N

.

m [95 to 105 lbf

.

ft.]

12 Install new o-ring on dump valve or plug. Install dump
valve or plug into backplate. Torque dump valve or plug to 36.6
to 40.7 N

.

m [ 27 to 30 lbf

.

ft]

13  Apply a small amount of petroleum jelly to the steel side of
valve plate to hold in place for installation. Aligning the index
pin, place the valve plate in position onto the backplate, with
steel side against backplate.

14  Install backplate assembly onto housing assembly. Making
sure valve plate and gasket stay in place.

No gerotor charge pump, skip to step 17.

15 Install inner gerotor and coupler assembly. The coupler has
a "V" groove on one end and this end of coupler should enter
backplate first. Lubricate inner gerotor.

Refer to Appendix A for reassembly of Charge relief valve in
adapter plate.

16 Install o-ring and outer gerotor ring onto adapter plate.
Lubricate both o-ring and outer gerotor ring to hold in position
during assembly of adapter plate. Install adapter plate onto
backplate.  Make sure o-ring and gerotor ring stay in place.

17 Retain backplate and adapter plate (when used) with four
cap screws, Torque 23 to 27 N

.

m [17 to 20 lbf

.

ft].

18 Install new o-rings on all plugs. Install plugs into housing.
Torque 9/16 in. - 18 plug 28 to 32 N

.

m [21 to 24 lbf

.

ft].

19 Refer to start-up procedures on page 17.

Содержание 70142

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

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

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

Страница 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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