Yamaha F100B - Checking the Gear Pump; Assembling the Pump Housing

60C5D11
7-40
1
2
3
4
5
6
7
8
9
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.
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.
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.
S60C7490
T
R
.
.
Gear pump bolt
C
:
6 N·m (0.6 kgf·m, 4.3 ft·lb)
Gear pump (F100B)