9) Check surfaces of plunger
pipe (16B).
REASSEMBLY INSTRUCTIONS - P420A-3100/5100 PUMPS
11) Place pressure rings and
weep seals (23B) over
plungers and into each seal
case (20).
12) Place weep return rings (25)
over the plunger (16) and
pressure ring over plunger
(24).
Contact Giant Industries or your local
distributor for maintenance of the gear
end of your pump. Phone: 419/531-4600
13) Generously lubricate
v-sleeves. Assemble spacer
rings (23A), and v-sleeves
(23) into valve casing (26).
10) Place each seal case (20)
with new o-rings (21 and
22) and new oil seals (19)
over plungers (16) with
weep hole down. Gener-
ously lubricate o-rings and
oil seals before reassembly.
Contact Giant Industries for service school information. Phone: (419) 531-4600
14) Slide valve casing over
plungers and seat firmly.
Replace the 8 socket head cap
screws (34) and tighten to 35
ft.-lbs. in a crossing pattern
(as shown below).
8
7
6
5
4
2
1
3
