The charge pump (10) lifts straight off the main pump. There is a spacer in the idler shaft bore that can slip out
as the pump is removed; be certain to control this spacer so it can not fall into the main pump. Remove gasket
Remove charge check valves (12) and shims (13).
Remove the hex, cap screws (14) and washers (15) and swing the control (16) away from the pump housing.
This area is sealed with both O-rings (17) and a gasket(18).
Caution must be exercised after the control valve (16) is swung away from the pump housing
since this opens a large cavity into the housing. Also during removal and installation of the
control link pin, parts can be dropped into the main housing requiring total disassembly of
Swing the control (16) away from the housing as far as it will go to expose the cotter pin (19). Remove the cotter
pin, washer (20) and connecting pin (21). It is suggested that a piece of wire be inserted through the eye of the
cotter pin so the pin can easily be retrieved if it falls into the pump. Remove control (16).
Remove all but two of the hex, cap screws (22 and 23) and washers (24) holding the end cap (25) to the housing.
Make sure the two remaining screws are opposite each other.
There is an internal spring loading on the end cap (25) and as the last two screws are loosened, it should begin to
separate from the housing. Loosen these screws alternately until the end cap (25) has fully separated from the
housing, then remove the screws entirely.
The end cap (25) can now be lifted off the pump; however, be certain that the valve plate (28) does not fall and
become damaged. If the valve plate tends to lift off with the end cap, hold it in place on the end cap and remove
both parts together. If the valve plate (28) remains on the bearing plate (32) remove it at this time.
All surfaces exposed are critical and caution must be used to avoid damage.
Remove gasket (26) and o-ring (27).
The end cap (25) is actually an assembly consisting of a tapered bearing race (29) which is a slip fit in the end
cap and the valve plate locating pin (30). These parts should be removed from the end cap. There may or may
not be a shim (31) located under the bearing race which should be removed.
Remove the bronze bearing plate (32) and the pilot ring (33) from the cylinder block(34). If the pilot ring remains
with the bearing plate, remove it at this time.