Crankcase and Oil System. - TM-43-01560203

TM 43-0156

Step

Function

Mech

Insp

CAUTION

cont

Prelube unit before starting if unit has not been run during the last 24 hours.

9 Ensure that there is only sufficient fuel (approx

30 gl) in the fuel tank to warm the engine.

10 Start the engine on fuel and operate at fast idle

until thoroughly warm, then accelerate to

three-fourths speed. When the sight glass snows

the fuel tank.

11 Operate the engine until undiluted preservative

oil is observed flowing through the fuel return

sight glass.

12 Open drain valve and drain the preservative oil

from the fuel tank.

13 Close drain valve.

14 Atomize spray the interior of the fuel tank with

preservative oil (9150-00-111-0209) and seal open-

ing with tape (7510-00-916-9659). Tape 7510-00-

890-9875 may be used as a substitute.

NOTE

Allow sufficient time for engine to cool before processing oil system.

1 Completely drain the crankcase, oil filters, and

lube oil strainer.

2 Remove oil filter elements.

3 Connect a portable pump to the output of the scav-

enging oil pump.

preservative oil is observed in the lube strainer.

5 Disconnect pump from the scavenging pump.

6 Connect portable pump to the lube pump output.

Change 1

B-3-50