Section V. Repair of Front Cover

*TM 9-2815-213-34

NOTE

(3)

Loosen both nuts completely to remove all

If new rods are used, be sure caps and

tension.

rods have number stamped on them

(4)

Tighten both nuts to 30 to 32 foot- pounds

before caps are removed. Caps are not

torque.

interchangeable.

(5)

Tighten both nuts to 60 to 65 foot-pounds

torque.

d. Rotate engine to a vertical position on the engine

(6) Advance both nuts to 60 degrees in 30

stand. Rotate crankshaft to position crank throw for

degrees increments.

cylinder being assembled at bottom center.

m. Follow steps a through I above, install piston

and rod assembly opposite one just installed. Secure

CAUTION

rod to same crankshaft journal.

Ring breakage will result from improper

use of ring compressor. If band type

NOTE

compressor is used, make certain inner

Chamfered side of rod faces respective

band does not slip down and bend

crankshaft cheeks and square sides

piston.

face each other.

e. With ring compressor in place, insert piston

n. Check rod for freedom of movement and

and rod assembly in the cylinder. Position numbered

clearance.

side of rod toward outside of block.

(1) Use hand pressure to move rod side-ways.

Tap lightly with soft hammer if necessary.

CAUTION

(2) If rod is not free, loosen cap and check for

dirt or burs. Secure cap as described above.

Pistons are marked to indicate which

(3) Push rods apart. Check for 0.008 to 0.016 inch

side is to be assembled to "Out" exhaust

clearance between rods with feeler gage (fig. 3-13).

side.

o. Bend tangs on lockplates (fig.

3-13),

locknuts.

f. Push piston assembly through ring compressor

until rings seat in cylinder sleeve.

g. Moving to bottom of block, grasp piston and rod

assembly by rod bolts and pull down to rod journal.

Leave piston assembly a short distance from actual

seating.

h. Coat rod bearing shell with GAA next to the

crankshaft.

i. Roll rod bearing shell into rod. Shell locking tang

must fit in milled recess.

j. Coat lower shell crankshaft bore with hit

pressure grease, and seat in rod cap.

k. Position rod cap over bolts that numbered side

of cap mates with numbered side of rod.

l. Lubricate bolt and nut threads and lock plates

with clean OE-10 lubricating oil. Install lockplate and

nuts to bolts, tighten nuts as outlined below.

(1) Tighten both nuts 55 to 66 foot-pounds

torque.

Figure 3-13. Rod side clearance check.

(2) Tighten both nuts 105 to 115 foot pounds

torque.

Section V. Repair of Front Cover

3-19. Disassembly

3-21. Inspection

Using the front crankshaft oil seal driver (38, fig. B-28)

Refer to paragraph 2-6 for inspection procedures.

and suitable arbor press remove oil seal as shown in

NOTE

figure 3-14.

3-20. Cleaning

Dowel replacement is not authorized.

Refer to paragraph 2-5 for cleaning instruction.

If dowels are bent or damaged replace

the cover.

3-8