TM-9-2320-272-23-5
TRUCK, 5-TON, 6X6, M939, M939A1, AND M939A2 SERIES TRUCKS (DIESEL)
TECHNICAL MANUAL; FIELD MAINTENANCE MANUAL; VOLUME 5 OF 5
SEPTEMBER 2012
TM-9-2320-272-23-5 - Page 438 of 623
17.
LUBRICATED AT TIME OF DISASSEMBLY BY SUSTAINMENT PERSONNEL
Item lubricated as part of maintenance repair procedure.
18.
OPERATOR PARTICIPATION
"D" and "W" maintenance is performed by the operator. The operator will assist Field Maintenance when
"S", "3/S", "A", "B", "OC", and "C/MR" maintenance is performed.
19.
M936, M936A1, AND M936A2 CRANE HYDRAULIC SYSTEM FILTER
CAUTION
Do not operate crane when indicator is at "BYPASSING" position. Notify Field
Maintenance.
To maintain adequate filtering, remove and clean filter element when indicator points to "NEEDS
CLEANING". Check indicator with pump running and oil at operating temperature. Stop engine and
remove and clean filter if indicated.
20.
TEMPERATURE RISES
If ambient temperature rises to 70°F (21°C) for no more than one week, use of OE/HDO 10 is permissible.
If ambient temperature rises to 30°F (-1°C) for no more than one week, use of OEA is permissible.
21.
FOR OPERATION OF EQUIPMENT IN PROLONGED COLD TEMPERATURE BELOW -10°F (-23°C)
Remove lubricants prescribed in the key for temperatures above -10°F (-23°C). Clean parts with
drycleaning solvent. Relubricate with lubricants specified in the key for temperatures below -10°F (-23°C).
22.
TRANSMISSION
CAUTION
Do not overfill transmission. Internal transmission component damage will result.
a.
Check and fill transmission to proper level weekly.
b.
Check oil level of automatic transmission using the following procedure:
(1)
Allow engine to idle. Shift transmission to neutral and apply parking brake.
(2)
Withdraw dipstick slowly to prevent a false reading. If transmission oil temperature gauge reads
180°F (82°C) or below, level on dipstick should show between marks designated for normal run. If
transmission oil temperature is above 180°F (82°C) allow transmission oil to cool.
(3)
If transmission oil level is low, add oil through filler tube. Return dipstick to filler tube, tighten dipstick
handle, and wipe away any oil spilled.
c.
Change oil every 24,000 mi (28,000 km) or 24 months, whichever comes first.
23.
WHEEL BEARINGS
Every 6,000 mi (9,600 km) or 12 months, whichever occurs first, remove, clean, dry, repack, and install
front wheel bearings. Every 12,000 mi (19,000 km) or 12 months, whichever occurs first, remove, clean,
dry, repack, and install inner and outer rear wheel bearings.
TM 9-2320-272-23-5
0820
0820-33
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