Yamaha Z200N Service Manual page 312

BRKT
TILT RAM ASSEMBLY AND GEAR PUMP UNIT
7330
7335
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.
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