Engine Lubrication; Chassis Lubrication - Jeep CJ-3A Owner's Manual

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16
Engine Crankcase—oil filter empty (qts.)
Transmission
Transfer Case
(pts.)
Differential—Front Axle (pts.)
Differential—Rear Axle (pts.)
Oil Bath Air Cleaners (pts.)
Brake System Fluid (pts.)
Power Take-Off (pts.)
Pulley Drive Unit (pts )

ENGINE LUBRICATION.

Lubrication of the engine is accomplished by means of a force-feed continuous circulating system. This is effected by means
of a rotor type pump, located externally on the left side of the engine, and driven by a spiral gear on the. camshaft.
The oil is drawn into the circulating system through a floating oil intake. The floating intake does not permit water or dirt to
circulate, which may have accumulated in the bottom of the oil pan, because the oil is drawn horizontally from near the top
surface.
An oil pressure gauge is mounted in the instrument panel, which indicates the pressure being supplied to the circulating
system. Failure of the gauge to register may indicate absence of oil, leakage or a fault in the lubrication system and the engine
should be stopped immediately. If there is plenty of oil in the reservoir the mechanical fault must be corrected before starting
the engine. Standard gauge reading is approximately 30 to 35 lbs. (5.355 to 6.247 Kg./cm.) at 30 miles per hour (48 Km./h.)
and 5 to 10 (.892 to 1.785 Kg. /em.) at idle speed.
The quantity of oil in the crankcase is measured by the bayonet type oil level indicator which is combined with the oil filler
cap located in the oil filler pipe at the right side of the engine. When the oil level is below the "Full" mark, pour sufficient new
oil into the reservoir to bring the level to the "Full" mark.
When the vehicle leaves the factory the crankcase is filled to the correct level with oil of the proper viscosity for the "break-in"
period. When the vehicle is used on the highway, completely drain the engine oil at 500 miles (800 Km.), and at 1000 miles
(1600 Km.), then every 2000 miles (3200 Km.) thereafter, by removing the drain plug in the lower left side of the oil pan.
Replace the drain plug and refill with 4 qts. (3.8 liters) (5 qts. [4.7 liters] when the oil filter has been drained) of fresh oil. For
heavy industrial or dusty field work, change the oil at the first 10 hours, and each 50 hours thereafter. To secure maximum
engine life, watch the condition of the oil closely and should it become contaminated, due to the conditions under which the
vehicle is being operated, change it immediately.
Always drain the oil when the engine is warm. The benefit of draining is, to a large extent, lost if the crankcase is drained
when the engine is cold, as some of the foreign matter will remain in the bottom of the oil pan.
At least once a year, preferably in the Spring, remove the oil pan and floating oil intake and wash thoroughly with cleaning
solution.

CHASSIS LUBRICATION.

When lubricating the chassis refer to the Lubrication Chart on Page 36.
For highway travel, clean and lubricate points indicated as No. 1 each
1000 miles (1600 Km.). When used in industrial or agricultural work the
Lubrication Capacities
U. S.
Imperial
5
4-1/2
6-1/2
5-1/2
2-1/2
2
2-3/4
2-1/4
1-1/4
1
3/4
5/8
1
3/4
3/4
5/8
Metric
4.73 liters
3.7 liters
1.18 liters
1.30 liters
591.40 CC
354.84 CC
.473 liters
354.84 CC

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