TM 5-3810-300-24 & P2
Gear oil is to be kept even with the level of the
To drain the transmission remove the two drain plugs
filler opening at all times. Check at the following
One at the bottom of the front case and one at the
intervals:
bottom the intermediate case. Drain oil when
Highway Service .............................. 1,000 miles
transmission is war After the transmission has been
Off-highway Service............................. 40 hours
drained and before it is I filled, the case should be
thoroughly flushed with a clean flushing oil or kerosene.
Do not use flushing compound unit is equipped with side
or front mounted pressure lubrication pumps unless
pump is removed and opening covered with plate. Clean
Change the gear oil on all new equipment after
both drain plugs before reinstalling.
the first 3000 to 5000 miles (on-highway), or first 40
hours (off-highway): thereafter, make oil changes as
follows:
In order to assure complete filling of the
Highway Service ........................................ 25,000 miles
transmission with 16 pints of oil, the following two
Off-highway Service
methods may be use:
Logging and associated operations ........ 1,000 hours
Dirt moving, mining and
1)
At any inclination: Plug both fill holes (one in t
associated operations .................. 250 to 500 hours,
front case and one in the intermediate case) and add
as indicated by operation and contamination of
entire16-pint quantity through opening in shift bar
lubricant.
housing. T transmission must be completely drained
before using this method in order to avoid overfilling.
2)
At upgrade inclinations from 0 through 3
degrees: A sufficient quantities through both fill holes to
level the at the bottom of both fill holes.
The above oil inspection and change periods
are based on the average use and operating conditions
Do not overfill.
Overfilling will cause the oil
for the applications listed. It is recommended that the
to be force out of the case through the mainshaft
individual owner make a periodic lab analysis of the
openings.
lubricant to determine contamination based on the
individual's own operating conditions. After this has
It is recommended that types and brands of oil
been determined, the individual owner can then set his
not intermixed because of possible incompatibility.
own inspection and oil change periods.
Additions of oil during servicing operations
should made through both fill holes to level the oil at the
bottom both fill holes with the transmission at a 0 to 3
Degree u grade angle.
Lubricate the clutch release bearing after each
40 hours of operation with Mobil grease No. 5 or its
equivalent.
It is imperative that the operating temperature of
t transmission does not exceed 250F.
Extensive operation at temperatures exceeding
2500 will result in rapid breakdown of the oil and shorten
If so equipped, replace filter element at each oil
transmission life.
change; clean filter element housing.
Transmissions used in stationary equipment, or
in hides operating at slow road speeds, may have to be
equipped with external coolers so that the 2500F.
temperature is not exceeded.
4-106
