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Pump Repair Instructions - GP8055/GP8060/GP8065 - Brine
Valve Inspection and Repair
1)
Remove bolts (58).
To Check Seals and Plunger Pipe
5)
Remove hexagon nuts (49A) and
valve casing together with seal case
(38) from crankcase (1). If neces-
sary, carefully tap the valve casing
(50) past the centering stud (50A)
using a rubber hammer.
IMPORTANT! If necessary, sup-
port the valve casing by resting it on
wooden blocks or by using a pulley.
2) Remove discharge
casing (50B) up and away.
4) The spring tension cap (51A, 52A) is
screwed together with the valve seat (51B or
52B). Screw off spring tension cap. Takeout
springs (51E, 52E) and valve plate (51C,
52C). Check sealing surfaces and O-rings
(51D, 52D). Replace worn parts. Coat threads
of valve seat with silicon grease or molycote
anti-seize Cu-7439 when reassembling. Be-
fore refitting the valves, clean the sealing sur-
faces in the casing and check for any damage.
Tighten caps (58) at 133 Ft-lbs; check torque
tension after 8-10 operating hours.
6) Remove tension screw (36C) and take
seal sleeve (39) together with all mounted
parts out of the drive. Pull plunger pipe
out of the seal assembly and check for any
damage. Carefully, remove seal rings (40)
and sleeves (42) with a screw driver.
9
3) Take out pressure springs
(57A). Pull out assembled
valves (51 & 52) with fitting tool.
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