Piston Pump Crush Ring Replacement - Toro Greensmaster 3150 Service Manual

6
1. Crush ring
2. Shims
3. Cover plate
4. Housing
Piston Pump Crush Ring Replacement (Fig. 22)
Note: The shims replace the crush ring in the cover
plate. If the camplate, cover plate, or housing is replaced
during servicing of the pump, the old crush ring can not
be used to make sure of proper preload.
1. Remove crush ring from the cover plate. Measure
thickness of crush ring.
2. Stack shims to the thickness of the crush ring.
3. Insert shims into the cover plate in the same location
that the crush ring was removed from.
4. Assemble housing sub assembly consisting of the
housing, camplate, bearing cone, bearing cup, and cov-
er plate (see Eaton, Medium Duty Piston Pump, Repair
Information, Model 70160 Variable Displacement Piston
Pump at the end of this chapter).
Hydraulic System
4
5
1
Figure 22
5. Camplate (control shaft)
6. Bearing cone
7. Bearing cup
5. Install washers and cap screws to the cover plate
and housing. Torque cap screws to 29 ft–lbs (39 Nm).
6. Check torque required to rotate control shaft.
Torque should be 5 to 15 in–lbs (0.6 to 1.7 Nm).
7. Complete assembly of the pump (see pump service
manual at the end of this chapter).
Page 4 – 50
8
7
2
8. O–ring
9. Washers
10. Cap screws
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.
Rev. B
29 ft–lb
(39 Nm)
3
9
v
10
Greensmaster 3150