TM-9-2320-272-23-2
TRUCK, 5-TON, 6X6, M939, M939A1, AND M939A2 SERIES TRUCKS (DIESEL)
TECHNICAL MANUAL; FIELD MAINTENANCE MANUAL; VOLUME 2 OF 5
SEPTEMBER 2012
TM-9-2320-272-23-2 - Page 339 of 1417
Table
1.
Field Preventive Maintenance Checks and Services - Continued.
ITEM
NO.
INTERVAL
ITEM TO BE
CHECKED OR
SERVICED
PROCEDURE
EQUIPMENT
NOT READY/
AVAILABLE IF:
7
Semiannual
Transfer Case
Shift transfer case lever between HI and LOW positions
to ensure proper operation. Observe for smoothness of
engagements. Refer to TM 9-2320-272-10 for proper
shifting speed ranges and operation.
Transfer hard to shift from
low to high.
8
Semiannual
Suspension
Observe how vehicle responds to road shock. Constant
bouncing or swaying from side-to-side is an indication of
a malfunction.
9
Semiannual
Emergency
Engine Stop
Control
NOTE
•
Before M939/A1 series vehicles can
be restarted, fuel shutoff valve
control lever under the hood must be
reset.
•
This check will be performed with
engine running, transmission in N
(neutral), and parking brake applied.
Check emergency engine stop control:
Engine fails to shut off.
(1)
Pull emergency engine stop control out until
engine stops. If engine does not stop before emergency
engine stop control is pulled completely out, place
battery switch in the OFF position, and troubleshoot.
(2)
Push emergency engine stop control in until
original position is obtained.
TM 9-2320-272-23-2
0207
0207-4
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