INSPECTION AND REPAIR (cont) - TM-10-3930-638-24-P0793

TM 10-3930-638-24&P

4-2. ENGINE MAINTENANCE (cont)

b. Cylinder Head and Valves (cont).

LOCATION

ITEM

REMARKS

STEP

ACTION

INSPECTION AND REPAIR (cont)

NOTE

(cont)

If valve seat inserts (14) require replacement perform steps b and

c below; otherwise proceed to step d below.

CAUTION

Don't remove valve seat inserts (14) with punch, chisel or pry bar

as damage to cylinder head will result.

b. Valve seat

Use seat removal tool or machine inserts

Remove

insert (14)

out of cylinder head

Clean valve seat insert recesses in cylinder

c. Valve seat

Cool and

insert (14)

install

head. Place new inserts in dry ice to shrink

them, then install by pressing into

cylinder block until bottomed in recess

d. Intake valve

Install and

Check as shown below. If protrusion is

(7) and exhaust

more than 0.005 inch, valve and seat must

check valve

valve (6)

be ground. Refer to intake and exhaust

protrusion

valves and valve seat refacing following

4-15