Checking The Gear Pump; Assembling The Pump Housing - Yamaha F100C Service Manual

Checking the gear pump

1. Check the gear pump assembly for dam-
age or excessive wear. Replace if neces-
sary.

Assembling the pump housing

1. Install the new O-ring 1, up-relief valve
seat 2, ball (3.18 mm [0.125 in]) 3,
absorber valve pin 4, and spring 5 into
the pump housing.
2. Install the new O-rings 6 onto the main
valves 7.
3. Install the main valves 7 and pump
gears 8 into the pump housing.
60C5D11
4. Install the balls (3.18 mm [0.125 in]) 9,
shuttle pistons 0, and balls (4.76 mm
[0.187 in]) A into the gear pump.
S60C7490
CAUTION:
Install all components in their original
direction and position for proper assem-
bly and operation.
NOTE:
Apply grease to the balls and shuttle pistons
to prevent them from falling out of the gear
pump.
5. Install the gear pump B to the pump
housing, and then tighten the bolts C to
the specified torque.
NOTE:
Tighten the bolts evenly and make sure that
the pump gears turn smoothly.
Gear pump (F100B)
Gear pump bolt C:
6 N·m (0.6 kgf·m, 4.3 ft·lb)
1
2
3
4
5
6
7
8
9
7-40