Eaton 70142, Информация по ремонту, Страница: 9 / 20

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.