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Page Title:
Table 6. Transfer Case Troubleshooting Procedures. |
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 TM 9-2320-361-24-1
0008 00
MECHANICAL SYSTEMS TROUBLESHOOTING - DIRECT SUPPORT (Contd)
Table 6. Transfer Case Troubleshooting Procedures.
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
1. Check sprag air cylinder operation
If sprag air cylinder operation is
1. TRANSFER CASE
(TM 9-2520-246-34-1) and test
defective, replace sprag cylinder
WILL NOT OPERATE
using outside air source with
FRONT DIFFERENTIAL
engine stopped.
2. With air tanks full and engine off,
1. If forward and reverse sprag
loosen airlines at sprag air
engagements are not heard,
cylinder and listen for sprag
replace transfer sprag air cylinder
clutch engagement in transfer
sprag unit.
2. If sprag engagement is heard,
repair sprag unit in transfer case
(WP 0451 00).
1. Confirm transmission to transfer
If transmission to transfer propeller
2. TRANSFER CASE
propeller shaft turns.
shaft will not turn with transmission
WILL NOT OPERATE
and transfer assembly in neutral.
REAR DIFFERENTIAL
Repair or replace transfer case
(WP 0451 00 or WP 0138 00)
2. Place transmission to transfer
Remove and repair propeller shaft
propeller shaft in neutral. Try to
turn propeller shaft. If propeller
shaft moves, then it is damaged.
3. Confirm transfer to forward rear
If rear axle propeller shaft will not
axle propeller shaft can be turned.
turn, see WP 0006 00, table 11,
Place transfer shifter into neutral
malfunction 1, step 5. If propeller
and raise both rear wheels on one
and axles turn freely, replace
side of vehicle.
transfer case
Check and verify approximate
1. If transfer case front output shaft
3. TRANSFER CASE
location of oil leak(s).
cover gasket is leaking, remove
LEAKS OIL
transfer case (WP 0138 00) and
replace gasket (WP 0451 00).
2. If transfer case housing gasket is
leaking, remove transfer case
(WP 0451 00).
3. If transfer case input flange oil
seal is leaking, replace seal
(WP 0451 00).
4. If transfer case front output flange
oil seal is leaking, replace seal
(WP 0451 00).
5. If transfer case input shaft
bearing cover gasket is leaking,
replace gasket
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