To inspect or replace the Charge Relief Valve, use
a 1 wrench to remove the hex plug and the spring
and poppet. 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 poppet. spring, shims and plug Be
certain shims are in place in plug. Torque to 30-60
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 interchangeable 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 follows:
20-23 Series to 30-40 ft lbs
24 Series to 80-90 ft. lbs.
25-27 Series to 125-135 ft lbs
When installing the Charge Pump, align the new
gasket so that the small relief valve port is open.
Be certain the port in the charge pump and the end
cap are aligned. Rotate the charge pump shaft so
its tang aligns approximately with the slot in the
end of the main pump drive shaft Hold the idler
spacer in place and install the charge pump onto
the end cap. Rotate the pump slightly until the
tang and slot on the shafts engage and the pump is
solidly on the end cap.
Insert the four (4) cap screws and torque to these
20-23 Series to 10-11 ft. lbs.
24-27 Series 27-37 ft. lbs.
When reinstalling the vacuum inlet hose
on the charge pump, do not tighten to
more than 14 to 21 ft. lbs. torque.