Mercury 40 Service Manual page 337

POWER TRIM
Replace PO check
valve assembly
Trim system does
not leak down:
Testing complete
Cylinder bore appears
smooth with no debris
Replace memory pis-
ton and shock piston
O-rings
Trim system does
not leak down:
Testing complete
Page 5B-28
continued
Remove PO check valve
assembly,
rings and seals for dam-
age
Debris and/or damage
identified
Trim
down
Inspect memory piston
O-ring
bore
Trim leaks down
Replace trim system
inspect O-
PO check valve appears
O.K. - Clean and reinstall
PO check valve assembly
system leaks
and cylinder
Trim system does
not leak down:
Testing complete
Cylinder bore appears
rough and/or debris
found in cylinder
90-828631R3 MARCH 1999