0012
TM 1-1740-221-13&P&P
PARK POSITION BRAKE TROUBLESHOOTING - (CONTINUED)
BRANCH 3.
3.
Perform this step (two person operation) in order to simplify troubleshooting. Hand brake disengaged or off,
engine start switch in the run position (engine not running), move gear selector to the Drive position (5
sec) and then return the gear selector to Park and observe the park position motor operates to engage
the park position brake.
CONDITION/INDICATION
Did the park position motor operate applying the park position brake caliper?
DECISION
YES Proceed to Step 4.
NO Proceed to Step 5.
BRANCH 4.
4.
Inspect park position caliper assembly (WP 0087).
CONDITION/INDICATION
Is the park position caliper damaged?
DECISION
YES Proceed to Step 5.
NO Replace defective component(s) (WP 0087).
BRANCH 5.
5.
CONDITION/INDICATION
Did the upper limit switch (LS-PE) ohms check satisfactory?
DECISION
YES Proceed to Step 6.
NO Replace upper limit switch LS-PE (WP 0086).
BRANCH 6.
6.
CONDITION/INDICATION
Does park brake engage relay (CRP) ohms check properly?
DECISION
YES Proceed to Step 7.
NO Replace defective park brake relay CRP (WP 0121).
00122