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Rev. D
Reelmaster 3100−D Hydraulic System (Rev. C)
Page 4 − 101
Piston Pump Crush Ring Replacement
1. Crush ring
2. Shims
3. Cover plate
4. Housing
5. Cam plate (control shaft)
6. Bearing cone
7. Bearing cup
8. Seal
9. Washer (3 used)
10. Cap screw (3 used)
Figure 67
v
6
4
5
8
7
2
3
9
10
1
29 ft−lb
(39 N−m)
NOTE: The shims replace the crush ring in the piston
pump cover plate on Reelmaster 3100−D machines with
serial numbers above 90775. If the cam plate, cover
plate, or housing is replaced during servicing of the
pump, replace the original crush ring with shims 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, cam plate, bearing cone, bear-
ing cup, and cover plate (see Eaton Medium Duty Piston
Pump Repair Information Model 70160 Variable Dis-
placement Piston Pump at the end of this chapter).
5. Install washers and cap screws to the cover plate
and housing. Torque cap screws to 29 ft−lbs (39 N−m).
6. Check torque required to rotate control shaft.
Torque should be 5 to 15 in−lbs (0.6 to 1.7 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 Repair
Information at the end of this chapter).
Hydraulic
System