Yamaha F40B - Checking the Gear Pump; Checking the Gear Pump Housing; Checking the Valve Seal; Checking the Filter

BRKT
Bracket unit
7-43 67C3K11
7. Remove the valve lock screw E and
relief valve assembly F.
8. Remove the valve lock screw G, valve
pin H, and valve pin seal I from the
relief valve J.
NOTE:
When disassembling the relief valve assem-
bly F, be sure to note the number of times
the valve lock screw G is turned out from its
set position.
Checking the gear pump
1. Check the operation of the gear pump
shafts. Replace the gear pump assembly
if the shafts do not rotate smoothly.
Checking the gear pump housing
1. Check the gear pump housing. Replace
the gear pump housing if corroded or
cracked.
Checking the valve seal
1. Check the main valve seal assembly 1
and absorber valve pin assemblies 2.
Replace if damaged.
2. Check the main valves 3 and shuttle
piston 4. Replace if damaged.
3. Check the relief valve assembly 5.
Replace if damaged.
4. Check the manual valve and spring.
Replace if damaged.
Checking the filter
1. Check the filters. Clean if there is dirt or
residue.
S67C7132
G
F
H
I
J
E
S67C7133
S67C7080
1
2
2
S67C7081
3
4
3
S67C7134
5