90-817643R1 DECEMBER 1996 MID-SECTION - 5B-29
Inspect check valve for debris; clean debris from
check valve if found. If debris cannot be cleaned from
check valve, replace trim rod piston as an assembly.
Clean trim rod and components with parts cleaner
and dry with compressed air.
It is recommended that all O-rings in trim system be
replaced.
Inspect trim rod. If scraper (located in cap) has failed
to keep rod clean, replace scraper.
Lubricate all O-rings using Quicksilver Power Trim
and Steering Fluid or; (ATF) Type F, FA or Dexron II.
Motor and Electrical Tests/
Repair
Trim Pump Motor Test
WARNING
Do not perform this test near flammables (or ex-
plosives), as a spark may occur when making
connections.
1. Disconnect orange (motor) wire and black (mo-
tor) wire from relay switch wiring harness.
2. Connect a 12 volt power supply to motor wires
(positive to orange; negative to black results in
motor up direction. Positive to black; negative to
orange results in motor down direction). Motor
should run.
3. If motor does not run, disassemble motor and
check components.
Thermal Overload Switch Test
IMPORTANT: If thermal overload switch has been
activated, pump motor cannot be tested for a
minimum of one minute. After this period switch
should close (reset itself) and pump motor may
be operated. Perform the following check(s) only
if switch does not reset itself.
MOTOR ASSEMBLED
Connect Ohmmeter (R x 1 scale) leads as shown. If
switch is good, full continuity (zero ohms) will be indi-
cated. If full continuity is not indicated, disassemble
motor and recheck switch per instructions, following.
51196
a
b
a - Motor Wire (Black)
b - Motor Wire (Orange)
MOTOR DISASSEMBLED
Connect Ohmmeter (R x 1 scale) leads as shown. If
switch is good, full continuity (zero ohms) will be indi-
cated.
51193
If full continuity is not indicated, clean switch contact
surfaces, using an ignition point file.
Recheck switch; if full continuity is not indicated, re-
place end frame.
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