Checking The Tilt Ram; Checking The Gear Pump Unit - Yamaha F115A Service Manual

BRKT
TILT RAM ASSEMBLY AND GEAR PUMP UNIT
7330
7340
2. Remove:
• Check valves 1 and 2
NOTE:
To remove the check valves, cover the gear
pump housing with a clean cloth and then
blow compressed air through holes a
and b.

CHECKING THE TILT RAM

Check:
• Tilt ram
Excessive scratches → Replace.
Bends/excessive corrosion → Replace.
Rust → Polish.
(with 400 - 600 grit sandpaper)

CHECKING THE GEAR PUMP UNIT

Check:
• Shuttle valves 1
• Check valve assemblies 2
Clogs/damage/wear → Replace.
• Pump gears 3
Damage/wear → Replace the gear
pump unit.
• Up-relief valve assembly 4
• Down-relief valve assembly 5
Damage/wear → Replace the gear
pump unit.
• Balls 6
Damage/wear → Replace.
7-44
E