10
Model 70142 and 70145
Appendix A - Charge Pump Adapter Assembly
Reassembly - Charge Pump Adapter Assembly
1 If necessary, press the new bearing into the adapter assembly
to the dimension shown in figure 1-2 with the numbered end
of bearing outward and closest to mounting flange.
2 Install cup poppet or pin poppet, spring, and spring retainer
into charge pump adapter. Torque retainer 6.8 to 9.5 N
.
m
[5 to 7 lbf
.
ft.].
Numbered End
Gerotor Pocket
2.41 mm
[.095 in.]
Flange
Figure 1-2
Disassembly - Charge Pump Adapter Assembly
1 Remove spring retainer, spring, and poppet from adapter
assembly.
Inspection:
• Inspect the charge pump relief valve seat inside the
charge pump adapter. Check to insure that the seat is
smooth and free of burrs or other defects.
• Inspect the charge pump relief valve spring.
• Inspect the bearing inside the charge pump adapter.
The bearing needles must remain in the bearing cage
and bearing at dimension shown in figure 1-2.
• Inspect the gerotor pocket inside the charge pump
adapter assembly. It should not be scored excessively.
Item Qty. Description
29 1 Charge Pump Adapter Assy.
29-1 1 Bearing (press fit)
29-2 1 Poppet, Cup
29-2a 1 Poppet, Pin
29-3 1 Spring, Tappered
29-3a 1 Spring, “Light Green” *
29-3b 1 Spring, “Pink” **
29-4 1 Spring Retainer
29-4a 1 Spring Retainer
*200 to 250 lbf/in
2
**250 to 300 lbf/in
2
Gerotor Pocket Depth
Displacement Depth of Pocket
cm
3
/r [in
3
/r] mm [in.]
6.9 [.42] 6.35 [.25]
13.8 [.84] 12.7 [.50]
29-4
29-3
29-1
29-2
Gerotor Ring
Pocket
(See chart for
depth)
Bearing
29-4a
29-3a or 3b
29-2a
Configuration for
6.9 to 1.3 bar
[100 to 150 lbf/in
2
]
Charge Relief Valve
29
Charge Pump
Suction Port
Pressure Check Port or
Remote Charge Port
Configuration for
13.8 to 17.2 bar [200 to 250 lbf/in
2
] or
17.2 to 20.7 bar [250 to 300 lbf/in
2
]
Charge Relief Valve
