POWER PLANT
18-10
For Training Purposes Only
May 03
P I L O T T R A I N I N G G U I D E
Engine Oil Replenishment System
The Challenger 604 is equipped with an oil replenishment system located in the aft
equipment bay. The system consists of a replenishment tank holding approximately
6.0 U.S. quarts of oil, a pump, selector valve, and control panel.
If a low oil tank quantity is indicated during the test, the nacelle oil tanks can be filled
from the replenishment tank. Pump and selector valves, located next to the
replenishment tank, are used to transfer oil from the replenishment tank to the
applicable engine-mounted tank.
Engine Oil Replenishment Procedure
Oil levels should be checked between 15 minutes to two hours after engine shutdown.
The engines must be motored if the replenishment period is exceeded. Maximum refill
allowable is 2 U.S. quarts, then the engine must be dry-motored for at least 30 seconds
prior to adding more oil.
Oil replenishment is accomplished as follows:
1. Note the oil quantity on the oil replenishment tank gauge.
2. The system power switch is selected ON, illuminating the green ON light.
3. The ENG OIL PRESS TO TEST switch/light is activated to illuminate (test) the
green LH (RH)-FULL indications.
4. The selector valve is rotated to the L or R position as required to pump oil from the
oil replenishment tank to the associated engine oil tank
5. The selector valve is released when the pump automatically shuts off and the LH
(RH)- FULL legend illuminates. A full level is indicated by the illumination of the
respective side green light (LH FULL or RH FULL).
6. The system power switch is selected OFF.
7. Oil quantity used for each engine is noted.
