Hydraulic System Troubleshooting Flow Chart - Mercury 40 Service Manual

Hydraulic System Troubleshooting Flow Chart

Manual release
valve and O-ring
damaged.
Replace manual re-
lease valve
O-rings.
Trim system does
not leak down.
Testing complete.
Debris and/or dam-
age identified.
Replace tilt relief valving.
Trim system does
not leak
Testing complete.
Replace PO check
valve assembly.
Trim system does
not leak down.
Testing complete.
90-852572R1 JANUARY 1998
TRIM SYSTEM LEAKS DOWN WITH
MANUAL RELEASE VALVE CLOSED.
Inspect manual release valve.
Trim system
down.
and
Remove tilt relief valving
and inspect O-rings and
seals for debris and/or
damage.
Trim
down.
Remove PO check valve
down.
assembly,
rings and seals for dam-
age.
Debris and/or dam-
age identified.
Trim
down.
continued on next page
Manual release valve and O-
rings appear to be O.K. - Clean
and reinstall manual release
valve.
leaks
Tilt relief valving and O-rings
appear to be O.K. - Clean and
reinstall tilt relief valving.
system leaks
inspect O-
PO check valve appears
O.K. - Clean and reinstall
PO check valve assem-
bly.
system leaks
Trim system does
not leak down.
Testing complete.
Trim system does
not leak down.
Testing complete.
Trim system does
not leak down.
Testing complete.
MID-SECTION - 5C-23