Greensmaster 3300/3400Hydraulic System Page 5 -- 72
Piston Pump Crush Ring Replacement
1. Crush ring
2. Shims
3. Cover plate
4. Housing
5. Camplate (control shaft)
6. Bearing cone
7. Bearing cup
8. O--ring
9. Washer (3 used)
10. Cap screw (3 used)
Figure 50
29 ft--lb
(39 N--m)
6
4
5
8
7
2
3
9
10
1
Piston Pump Crush Ring Replacement (Fig. 50)
NOTE: The shims (item 2) replace the crush ring (item
1)inthecoverplate.Ifthecamplate,coverplateorhous-
ing is replaced during s ervicing of the pump, the old
crush ring can not be used to make sure of proper pre-
load.
1. Remove crush ring from the cover plate. Measure
thickness of crush ring.
2. Stack shims to the thickness of the crush ring.
3. Insertshims intothe coverplateinthesamelocation
that the crush ring was r emoved from.
4. Assemble housing sub assembly consisting of the
housing, camplate,bearing cone, bearingcup and cov-
er plate (see Eaton, Medium Duty Piston Pump, Repair
Information,Model70160VariableDisplacementPiston
Pump at the end of this chapter).
5. Install washers and cap screws to the cover plate
andhousing. Torquecap screwsto 29 ft--lbs (39N--m).
6. Checktorquerequiredtorotatecontrolshaft.Torque
should be from 15 to 25 in--lbs (1.7 to 2.8 N--m).
A. If torque is too low, add additional shims and re-
peat steps 3 through 6 until the specified torque is
achieved.
B. If torque is too high, remove shims and repeat
steps 3 through 6 until the specified torque is
achieved.
7. Complete assembly of the pump (see Eaton, Me-
dium Duty Piston Pump, Repair Information, Model
70160VariableD isplacementPistonPumpattheendof
this chapter).
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