Service Manual and
Axial Piston Pumps Series 20
Repair Instructions
L1003506
• Rev BA • Jun 2014
22
To inspect or replace the charge relief valve, use
a “1“ wrench to remove the hex plug and the
spring and valve cone. Remove the shims from
the counter bore of the plug. Do not alter these
shims unless new parts are used, in which case
adjusting the valve setting, by shimming, is
necessary. To install, insert valve cone, spring,
shims and plug. Be certain shims are in place in
plug. Torque to 22 - 24 Nm [195 - 212 lbf•in].
The removal of the charge check valves requires
the use of a draglink socket. These check valves
are cartridges which are threaded into the end
cap.
The charge check valves are interchange able
with each other. It is suggested that they be
replaced in pairs. Use caution when installing
these valves to prevent damage to the O-ring on
the cartridge as it is inserted past the threads in
the end cap.
After assembly, be certain the check valves are
below the surface of the end cap. Torque check
valves as specified at the end of this manual.
3
1+2
F000 064
Disassembly and Assembly
Minor repairs
(continued)
