Trim Cylinder Shock Piston Test - Mercury BRAVO Service Manual

SERVICE MANUAL NUMBER 28

Trim Cylinder Shock Piston Test

If all previous trim system test results meet specifications, but sterndrive unit will not
trim IN/DOWN, the problem may be a leaky trim cylinder shock piston. Use the follow-
ing test to check for this condition. No test gauge required.
1. Run the pump in the OUT/UP direction until the trim cylinders are fully extended.
2. Use a suitable devise to keep trim cylinder piston rods from retracting. The Quicksilver
3. Disconnect the UP trim hose from trim cylinders.
4. Run the pump in the IN/DOWN direction. If oil flows from the UP port on the trim cylinder,
90-863160 MAY 2000
Trailering Kit works well for this purpose.
a - Trailering Clip
b
a - UP Trim Hose
b - Front Connection
the shock piston is leaking and must be replaced.
a
a
OILDYNE TRIM PUMP
22562
50389
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