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1. With a 22mm socket, remove the
three discharge (43) and three
inlet (41) manifold plugs. Check
o-rings (42 & 44) for wear and
replace as necessary.
3. Use a small slide hammer to
remove valve seats (37) from
manifold (29). Inspect valve
plates (36) and valve seats (37)
for wear. If excessive pitting is
seen, replace the worn parts.
Check valve seat o-ring (38) for
wear and replace as necessary.
2. Remove the discharge spring
retainer (34), valve spring (35),
and valve plate (36).
4. Drain the oil from the pump.
Turn the pump over to remove
the two manifold stud nuts (46)
with a 17mm wrench.
7. Inspect and clean the valve assembly parts. If pitted or worn, replace inlet
valve seats (37), valve plates (36), spring (35) and spring retainers (34).
Reinsert items 34-38 into valve adapter (39).
5. Tap the back of the manifold
(29) with a rubber mallet to
dislodge, and slide off the
pump.
6. From the front inlet valve ports,
remove the inlet valve assembly
(34-40).
NOTE: Contact Giant Industries for Service School Information. Phone: (419)-531-4600
REPAIR INSTRUCTIONS - P46W, P46W-HK, P46HT
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