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Repair
3A0019J 9
Pump Disassembly
1. Relieve pressure and flush system. See Pressure
Relief Procedure and Flushing, page 7.
2. Remove inlet hose and drain inlet housing (7).
3. Horizontally clamp pump on outlet housing (7) in
vise, use 1/2 in. hex bit socket to loosen all four tie
bolts (5) from inlet housing (6).
4. For 40cc and 50cc pumps only: Use wrench to
remove rod adapter (21).
5. Remove pump assembly from vise and lay on a flat
surface with towels or in catch pan.
6. Fully unthread and remove tie bolts (5).
7. Remove inlet housing (6) from main cylinder (3).
Remove crossover tube (4) and o-rings (2).
8. Pull main cylinder (3) and displacement rod (15)
away from outlet housing (7).
9. Remove displacement rod (15) from cylinder (3).
10. Remove two o-rings (1) from main cylinder (3).
11. Place outlet housing (7) in vise so throat cartridge
(18) is facing up.
r_257891_3a0019_6h
7
6
5
clamp here
clamp here
21
r_257891_3a0019_30h
5
6
NOTICE
Be careful not to scratch the displacement rod (15);
place it on a smooth working surface. Damage to the
displacement rod will shorten pump life.
r_257891_3a0019_7h
21
4
2
2
3
15
6
3
15
r_257891_3a0019_8h
r_257891_3a0019_9h
1
3
1