Hydraulic System Troubleshooting - Mercury 40 Service Manual

Hydraulic System
Troubleshooting
Refer to disassembly/reassembly instructions (fol-
lowing) if disassembly is required when servicing.
IMPORTANT: After debris or failed components
have been found (during troubleshooting proce-
dure), it is recommended that unit be disas-
sembled completely and all o-rings be replaced.
Check ball components and castings must be
cleaned using engine cleaner and compressed
air or replaced prior to reassembly.
Support outboard with tilt lock lever when servicing
manual tilt system.
1. Check manual release cam adjustment. Cam
must open and close freely. Adjust cam link rod
as necessary.
a
c
a - Link Rod
b - Manual Release Lever
c - Accumulator
2. Check for external leaks in the manual tilt sys-
tem. Replace defective part(s) if leak is found.
IMPORTANT: If cut or damaged o-rings are found,
inspect machined surfaces for scoring, burrs or
debris.
5F-16 - MID-SECTION
3. Check for discharged accumulator. 35 to 50 lb. ft.
(47-68 N·m) of pulling force must be attained
when tilting outboard from full "down" to full "up"
position. If more than 50 lb. ft. (68 N·m) of force
is required, replace accumulator.
b
a - Weight Scale
b - Valve Lever (open position)
51143
a
b
90-852572R1 JANUARY 1998
50431