TM 9-2815-225-34&P
3-35. CYLINDER HEAD AND VALVE REPAIR (Contd)
LOCATION/ITEM
ACTION
REMARKS
a. Disassembly (Contd)
2.
Two locking nuts (29) and
Remove from exhaust valve
adjusting screws (30)
crossheads (28).
3.
Two intake valve crossheads
Remove from valve crosshead
(22) and exhaust valve
guides (8) on cylinder head (9).
crossheads (28)
WARNING
Compressed air used for cleaning purposes will not exceed 30 psi (207 kPa). Use only with
effective chip guarding and protective equipment such as goggles or shield, gloves, etc.
Failure to comply may result in injury to personnel.
4.
Cylinder head assembly (1)
a. Steam clean and dry with
compressed air.
b. Put into head holding
Use head holding fixture (ST-583).
fixture.
NOTE
Repeat steps 5, 6, and 7 for each intake or exhaust valve.
5.
Valve spring (4)
Compress.
Use valve spring compressor
(ST-448) (32) and head holding
fixture (ST-583). Stud of valve
spring compressor (32) should be
installed on screw hole (31). Keep
a firm hold on valve spring com-
pressor (32) until valve collets (2)
are removed.
6.
Two valve collets (2)
a. Tap head of valve (13) or (14)
lightly to loosen.
b. Remove from valve and valve
Use magnet if needed. Discard
spring guide (3).
valve collets (2).
7.
Intake valve (13), exhaust
Remove from cylinder head (9).
As each valve is removed, place
valve (14), valve spring (4),
on numbered board or stand. If
and valve spring guides
spacers are used, cylinder head
(3) and (5), and spacers*
has been resurfaced at one time.
(33), if used
NOTE
Step 8 does not apply to No. 2 cylinder head.
8.
Two screws (26), cover plate
Remove from cylinder head (9).
Discard preformed packings (24).
(25), and two preformed
packings (24)
9.
Four pipe plugs (27)
Remove two from each end of
No. 3 cylinder head has two pipe
cylinder head (9).
plugs in forward end only.
10. Six expansion plugs (10),
Remove from cylinder head (9).
a. Using hammer and punch,
expansion plug (16), and
hit outside diameter of expansion
two expansion plugs (17)
plugs to force one side out.
b. Use screwdriver or pliers to
remove expansion plug from hole.
Discard expansion plugs (10), (16),
and (17).
3-114
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