Service Manual

42 PG / PE Series
Refer to Figure 6.
Disassembly
Perform disassembly, inspection and assembly on
check valves one side at a time. Some units vary
in “A” side to “B” side check conguration.
1. Remove the check valve (42) with an 1/4” allen
wrench.
2. Remove the valve spring and poppet from the
end cap (2).
Inspection
1. Inspect the poppets and mating seats in the end
cap (2) for damage or foreign material.
Assembly
1. Lay the pump on its side, so the check plug port
is horizontal.
2. Insert the check plug, spring and poppet (42) as
one assembly into the check plug port. Tighten,
reference Table 2, page 38 for torque values.
3. Repeat disassembly, inspection and assembly
for the opposite port side.
REMOVAL, INSPECTION AND/OR
REPLACEMENT OF CHECK VALVES
REMOVAL, INSPECTION AND/
OR REPLACEMENT OF SYSTEM
CHECK RELIEFS (SCR’S) OR
SHOCK VALVES
Refer to Figure 7.
Disassembly
Perform disassembly, inspection and assembly on
SCR/shock valve one side at a time. Some units
vary in “A” side to “B” side conguration.
1. Remove the SCR (42) with a 7/8” wrench or the
shock valve (42) with an 11/16” wrench.
2. Remove the check relief/shock valve spring and
the check relief/shock valve from the end cap
(2).
Inspection
1. Inspect the check relief or shock valve (42) and
mating seat in the end cap (2) for damage or
foreign material.
Assembly
1. Lay the pump on its side, so the check plug port
is horizontal.
2. Insert the system check relief spring and check
relief or shock valve spring and shock valve as
one assembly into the check plug port. Tighten
to the correct torque value. See page 38.
3. Repeat disassembly, inspection and assembly
for the opposite port side.
Figure 6. PG / PE Pump Check Valves
Figure 7. PG / PE Pump Shock Valves
2
42B
(PORT “B”
SIDE)
42A
(PORT “A”
SIDE)
42A
42B
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