Eaton 72400 Repair Information page 10

Model 72400
Reassembly
Refer to Appendix C for reassembly of rotating kit assembly.
11 To install rotating kit assembly, leave housing and shaft in
the horizontal position. Holding swashplate into position with
screw driver thru controller linkage passageway at the top of
housing, place rotating kit assembly over shaft and into housing
until pistons are in against swashplate. Make sure all parts are
in housing completely and properly positioned. Return the
pump to the vise with open end of housing up, clamping
housing on the outer portion of the flange.
12 Install gasket on to housing.
13 If necessary, press new bearing and roll pin in endcover to
dimension shown in figure 1-3. Bearing installed with the
numbered end outward. Roll pin installed with split oriented
away from bearing.
14 Install new o-ring on relief valves. Install relief valve in its
original cavity in endcover that it was removed. Torque 136 to
149 N•m [100 to 110 lbf•ft.]
15 Install new o-ring on bypass valve or plug. Install bypass
valve or plug into endcover. Note: Make sure paddle of bypass
valve is perpendicular to relief valve axis prior to installing or
damage could result.
16 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 endcover, with
steel side against endcover.
17 Install endcover assembly onto housing assembly. Make
sure ports are positioned correctly, valve plate and gasket stay
in place.
No gerotor charge pump, skip to step 20.
18 Install key and inner ring gerotor onto shaft or coupler
assembly. Lubricate inner ring gerotor.
Refer to Appendix A for reassembly of charge relief valve in
adapter plate.
19 Install o-ring and outer ring gerotor onto adapter plate.
Lubricate both o-ring and outer ring to hold in position during
assembly of adapter plate. Install adapter plate onto endcover.
Make sure o-ring and gerotor ring stay in place.
20 Retain endcover and adapter plate (when used) with four
cap screws, Torque 37 to 42 N•m [27 to 31 lbf•ft].
Refer to Appendix B for reassembly of manual servo control
assembly.
21 Install control housing gasket onto housing. Install orifices
into control assembly and retain in position with petroleum jelly.
Position the feedback link at 90 degrees from control housing.
Install manual servo control assembly onto housing making
sure feedback link entered small groove in servo piston
assembly.
22 Retain control assembly with six cap screws, torque 4,5 to
5,4 N•m [40 to 48 lbf•in].
23 Install control arm onto control assembly input arm. Retain
with lock washer and nut, torque 5 to 8 N•m [4 to 6 lbf•ft]
24 Install new o-rings on all plugs. Install plugs into housing.
Torque 3/4 in. plug 28 to 32 N•m [21 to 24 lbf•ft]. Torque 1-1/4
in. plug 54 to 61 N•m [40 to 45 lbf•ft].
25 Refer to start-up procedures on page 23.
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