TM 5-3805-254-20-1
ORGANIZATIONAL TROUBLESHOOTING - CONTINUED
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
83. PTO DOES NOT ENGAGE - CONTINUED.
Step 4.
Check for air at input fitting (1) on PTO IN/OUT switch (2) as follows:
Using 7/16-inch open-end wrench, unscrew and take off airhose (3). Check for
air pressure at airhose (3).
a.
If air pressure is not present, go to Malfunction 71, AIR SYSTEM
DOES NOT HOLD AIR PRESSURE (page 2-373).
b.
If air pressure is present, PTO IN/OUT switch (2) must be
replaced. Notify Direct Support Maintenance.
Step 5.
Check PTO IN/OUT switch-to-air shift control airhose (3) for loose,
cracked, broken, or kinked condition.
a.
If PTO IN/OUT switch-to-air shift control airhose (3) is cracked,
broken, or kinked, it must be replaced. Notify Direct Support
Maintenance.
b.
If PTO IN/OUT switch-to-air shift control airhose (3) is loose,
tighten using 7/16-inch open-end wrench.
c.
If PTO IN/OUT switch-to-air shift control airhose (3) is not
loose, cracked, broken, or kinked, go to step 6.
Step 6.
Check for air at input fitting (4) on air shift control (5) as follows:
Remove cutout (6) and insulation (7). Using number one cross-tip screwdriver,
unscrew and take out two screws (8). Remove inspection cover (9) from floor-
board (10).Using 7/16-inch open-end wrench, remove input hose (11) from
input fitting (4). Turn on PTO IN/OUT switch (2) and check for air.
a.
If air is present at air shaft control input hose (11), notify Direct
Support Maintenance.
b.
If air is not present at air shaft control input hose (11), go to step 7.
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