Cylinders and Air Boxes.

TM 43-0156

Step

Function

Mech

Insp

cont

through the lubrication system until preservative

oil is seen coming from the camshaft bearings 1

and 9 (located on top of the engine toward the

radiator end).

8 Turn the engine over at least two full revolutions

while pumping preservative oil through the oil

system.

9 Disconnect the portable pump.

10 Connect a portable pump to the piston cooling pump

output.

11 Pump preservative oil (9150-00-111-0909) through

the system.

12 Open access covers to the crankcase to observe

when the preservative oil starts coming from the

piston cooling tubes.

13 Turn the engine over two full revolutions while

pumping preservative oil.

14 Disconnect the portable pump.

15 Atomize spray the underside of the pistons and

rods.

16 Close and secure the access covers.

17 Allow time for the engine to drain (approx 20

min). Completely drain the crankcase oil filters

and lube oil strainer of any oil.

18 Install oil filter elements.

19 Prepare tag (8135-00-292-2345) indicating "OIL HAS

BEEN DRAINED FROM THE CRANKCASE. DO NOT

START UNTIL OIL HAS BEEN ADDED." Attach tag to

engine control panel.

(d) Cylinders and Air Boxes.

1 Remove the air box covers and open all cylinder

test valves.

2 Manually crank the engine until the piston in each

cylinder is below the cylinder liner air intake

ports.

B-3-51