8
13. Press seal sleeve assembly
into the crankcase (1) and
seat firmly.
14. Place entire manifold/seal
sleeve assembly over the
studs (49) and push firmly until
seated against the crankcase.
17. Replace plug with O-ring (48,
& 48A) and tighten to 107
ft.-lbs. (145 Nm).
16. Next, place valve assemblies
(46A) into manifold after first
lubricating the O-ring (44A).
Seat firmly into manifold.
15. Tighten hex nuts (49A) in a cross
-
wise pattern (shown above) to 59
ft.-lbs. (80 Nm).
18. Fill crankcase with approximately
118 fluid ounces of Giant oil or
equivalent SAE 80W/90 industrial
gear oil and check oil level of
the crankcase with the dipstick.
Proper level is center of two lines.
Reinstall your Giant LP pump into
your system.
Contact Giant Industries for service school information.
Phone: (419) 531-4600
6
4 2
7
8
1
3
5
LP122A-3100 & LP250-3100 - Repair Instructions
To Reassemble Fluid End
11.
Lubricate seal (36). Place seal (36) and drip shield (36B for
LP122A-3100 only), and pressure ring (36A) into the seal sleeve
(35). Assemble the O-ring (35A) onto seal sleeve and lubricate.
LP250-3100 has an additional O-ring (35B).
12. Place support ring (41) and
v-sleeves (40) into valve
casing. For LP250-3100, the
support disc (37) is placed
in the manifold (43) before
the support ring.
LP122A-3100 Only
LP250-3100 Only
