TM-5-2815-241-34-P

ENGINE, DIESEL NTC-290

TECHNICAL MANUAL; DIRECT SUPPORT AND GENERAL SUPPORT, MAINTENANCE (INCLUDING REPAIR PARTS AND SPECIAL TOOLS LIST)

MARCH 1987

TM-5-2815-241-34-P - Page 243 of 738

TM 5-2815-241-34&P

PISTON AND CONNECTING ROD - CONTINUED

ACTION

LOCATION

ITEM

REMARKS

2.

Upper bearing (5)

Take out.

Tag and hold for inspection.

3.

Bearing cap (2)

Lower bearing (6)

Take out.

Tag and hold for inspection.

4.

Piston (7)

Four piston

rings (8)

Using piston ring expander, take off.

5.

Piston pin bore (9)

Two retaining

Using 6-inch snap-ring pliers, take out.

rings (10)

WARNING

Heat-protective cloth mittens must be worn to prevent serious injury to hands when

handling heated parts.

CAUTION

Pistons must be heated in hot water to prevent piston damage during piston pin removal.

Do not drive piston pin with hammer. Driving may cause distortion of piston, causing

piston seizure in cylinder sleeve.

8.

Piston (7) and

connecting rod (1)

a.

Submerge in 2-gallon container of boil-

ing water for 15 minutes to allow pistons

to expand.

b.

Remove from boiling water, clamp con-

necting rod gently in machinist’s vise.

c.

Push piston pin (11) out of piston pin

bore (9).

d.

Tag piston, piston pin (11), and con-

necting rod, and hold for inspection.

TA 242487

2-221