Gear Pump; Disassembling The Gear Pump; Checking The Gear Pump - SELVA MARINE Grey Whale 200 EFI Service Manual

BRKT

Disassembling the gear pump

1. Remove the manual valve 1, then the
gear pump 2 and filters.
2. Remove the relief valve seal 3 and ball
4.
b
NOTE:
Before removing the relief valves, measure
and note the screw height a and screw
depth b.
7-43
Bracket unit
a
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3. Remove the bracket 5, then the balls 6.
4. Remove gear housing 2 7, then the
shuttle pistons 8.
5. Remove the drive gear 9, driven gear
0, balls A, and pins B.

Checking the gear pump

1. Check the drive gear 1 and driven gear
2. Replace if damaged or excessive
worn.
2. Check the up-relief valve 3 and down-
relief valve 4. Clean if there is dirt or res-
idue.
3. Check the main valves 5 and 6. Clean
if there is dirt or residue.
4. Check the absorber valves 7 and 8.
Clean if there is dirt or residue.
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