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10
9. The rear V-sleeve housing (48)
may be removed by prying
evenly outward with a flat
screwdriver. After slipping
housing over plunger, inspect
seals (50) and O-ring (49) and
replace as necessary.
10. Inspect ceramic plunger (24A)
tips for wear. If necessary,
replacement of the ceramic
plungers may be accomplished
by removing the plunger bolt
assemblies (24B and 24C) with a
13mm wrench. Ceramic
plungers should now slide off
the stainless steel plunger base
(22). Excessive resistance to
plunger removal may be
overcome by heating the
stainless steel plunger base.
This will melt any excess loc-tite
beneath the ceramic plunger
allowing easy removal.
NOTE: Contact Giant Industries for Service School Information. Phone: (419)-531-4600
REPAIR INSTRUCTIONS - P46W, P46W-HK, & P46HT
8. The pressure rings (item 30) can now be removed by pulling straight out.
Inspect and clean manifold (29) and pressure ring. Replace if necessary.
From the front of the pump reinstall pressure rings into manifold (29) with
grooved side towards front of manifold. Install new v-sleeves (31 or 50), with
grooved sides towards front of pump. For P46W-HK & P46HT pumps, install
high temperature seal (31A) with grooved sides towards front of pump.
Replace the support rings (32) and pressure springs (33) into manifold (29).
Install valve assembly (34-40) into manifold (29). Reinstall manifold plugs
(43) and torque plugs to 52 ft.-lbs.
30 31/50 31A 32 38 33
(P46W-HK & P46HT only)
49
50
51
11. Replace copper ring (24C) onto
plunger bolt (24B). Slide
plunger bolt assembly into
ceramic plunger (24A). Apply a
light film of loc-tite to plunger
bolt threads and place plunger
assembly onto stainless steel
plunger base (22) and tighten to
105 in.-lbs.
12. To replace plunger oil seals
(26), proceed to Gear End
Disassembly section below.
Otherwise, continue as de-
scribed below.
24C
13. Before replacing pump manifold
(29), first rotate crankshaft (18)
until two outside plungers (24A)
extend evenly forward. Next
lubricate v-sleeves (50) in the rear
v-sleeve housing (48) and slide
housing over plungers. Lubricate
ceramic plungers with a light film
of oil. Carefully and evenly slide
manifold over plungers and press
manifold firmly against crankcase
(1). Replace manifold stud bolts
(45), washers (47) and nut (46) and
tighten to 35 ft.-lbs.