TM 5-3810-300-24 & P2
LUBRICATION.
The transmission is designed so that the internal parts operate in a bath of oil circulated by the motion of gears and
shafts. Grey iron parts have built-in channels where needed, to help lubricate bearings and shafts.
Thus, all parts will be amply lubricated if these procedures are closely followed:
1.
Maintain oil level. Inspect regularly.
2.
Change oil regularly.
3.
Use the correct grade and type of oil.
4.
Buy from a reputable dealer.
To keep the gear oil clean between oil changes use the Fuller Transmission Gear Oil Filter which can be attached to the
right-side power take-off opening. This assembly includes a replaceable filter element that removes the accumulation of
metallic particles, road dirt and grit deposited in the lubricant.
RECOMMENDED LUBRICANTS.
Heavy-duty engine oil. Make sure to specify heavy-duty type meeting MIL-L-2104B specifications.
Mineral gear oil inhibited against rust, oxidation and foaming.
Extreme pressure oils under some conditions might form carbon deposits on gears, shafts, bearings and synchronizer
discs, and may also glaze friction surfaces of synchronizer discs conditions which will result in transmission malfunction
and premature failure. It is suggested that if these conditions exist, and E.P. oil is being used, a change should be made
to straight mineral gear oil or heavy duty engine as recommended.
ON-HIGHWAY VEHICLES
TYPE
GRADE
TEMPERATURE
Heavy Duty Engine Oil
SAE 50
Above +10 F.
MIL-L-2104B
SAE 30
Below +10 F.
Mineral Gear Oil
SAE 90
Above +10 F.
R and O Type
SAE 80
Below +10 F.
Mild E.P. Oil (except Sulfur-
SAE90
Above +10 F.
chlorine-lead type) MIL-L-2105B
SAE80
Below +10 F.
OFF-HIGHWAY AND MINING EQUIPMENT
Heavy Duty Engine Oil
SAE 50
Above +10 F.
MIL-L-2104B
SAE 30
Below +10 F.
Special Recommendation - For extreme cold weather where temperature is consistently below 0 F.
Heavy Duty Engine Oil
SAE 20W
Below 0 F.
MIL-L-2104B
4-105
