Table 2-1. Unit Level Preventive Maintenance Checks and Services HMMWV (Cont'd)
ITEM
NO.
INTERVAL
ITEM TO BE
INSPECTED
PROCEDURES
TM 9-2320-280-20-1
2-16
Change 1
NOT FULLY MISSION
CAPABLE IF:
13.1
Semi-
Neutral
(2) Place transmission shift lever in
Annual
Start Safety D (drive). There should be no
Switch
continuity present between wires 14.
(Cont’d)
If continuity is present, replace
neutral start safety switch (para. 5-6).
c. Connect wires 14A and 14B to
wires 14 at neutral start safety
switch.
14
Semi-
Trans-
a. Inspect vent lines and connectors
a. Vent line cracked,
Annual
mission
for security, cracks, and deterioration.
plugged, or missing.
b. Inspect transmission shift linkage
b. Shift linkage is
for bends, excessive play, cracks, and
unserviceable.
damage that could cause failure.
15
Semi-
Transfer
a. Inspect transfer case vent lines and
a. Vent line cracked,
Annual
connectors for security, cracks, and
plugged or missing.
deterioration.
Shift linkage is unserv-
iceable.
b. Inspect transfer case shift linkage
for bends, excessive play, cracks, and
damage that could cause failure.
c. Check transfer case fluid level every
3,000 (4,800 km) or semiannually,
whichever occurs first. Remove fill plug
and gasket. Level should be within 1/2 in.
(12.7 mm) of fill plug opening when vehicle
is on level ground. Install fill plug and
gasket, and tighten to 35 lb-ft (47 N•m).
CAUTION
Use Dexron® II for filling transfer case.
Failure to use Dexron® II will cause
damage to transfer case.
