Disassembling The Gear Pump; Checking The Valves; Checking The Filters - Yamaha F100C Service Manual

BRKT

Disassembling the gear pump

1. Remove the main valves 1.
WARNING
Never look into the pump housing open-
ing because the main valves and power
trim and tilt fluid may be expelled out
forcefully.
NOTE:
To remove the main valves, cover the pump
housing with a clean cloth 2, and then blow
compressed air through holes a and b
while holding the cloth down.

Checking the valves

1. Check the operation of the tilt piston
absorber valves and the valves for dirt or
residue. Clean if necessary.
7-39
Bracket unit
S60C7420
2. Check the valve seat 1, down-relief
valve 2, and valve pin 3 for dirt or resi-
due. Clean if necessary.
3. Check the shuttle pistons 4, main valves
5, and up-relief valve seat 6 for dirt or
residue. Clean if necessary.

Checking the filters

1. Check the gear pump filter 1 and down-
relief valve filters 2 for dirt or residue.
Clean if necessary.
S60C7470
S60C7475
S60C7480
60C5D11