Disassembling The Gear Pump; Checking The Gear Pump; Checking The Valve Seal; Checking The Filter - SELVA MARINE Pike 9,9 Service Manual

Disassembling the gear pump

1. Remove the manual valve 1, filter 2
manual release pins 3, valve seals 4,
and balls 5.
1
4
2. Remove the gear pump housing 6, shut-
tle piston 1 7 and shuttle piston 2 8.
7
8
3. Remove the down-main valve 9, up-
main valve 0, balls A, dowels B, drive
gear C, and driven gear D.
D
C
9
6AU3K11
7
2
4
3
5
S6AU7078
6
S6AU7079
0
B
A
B
S6AU7080

Checking the gear pump

1. Check the drive gear and driven gear.
Replace if damaged or excessively worn.
2. Check the gear pump housing. Replace if
scratched.

Checking the valve seal

1. Check the valve seals 1 and absorber
valve pins 2. Replace if damaged.
2
2
2. Check the main valves 3. Replace if
damaged.
3
3. Check the manual valve and spring.
Replace if damaged.

Checking the filter

1. Check the gear pump filters. Clean if
there is dirt or residue.
NOTE:
See the exploded diagram for the filter instal-
lation positions (7-41).
PT gear pump
7
1
7
2
1
3
1
4
S6AG7185
5
3
6
S6AG7180
7
7
8
9
7-44