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Removal - continued - TM-10-3930-673-340141
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TM-10-3930-673-34 All Terrain Lifter Army System (ATLAS) 10 000 lb Capacity Manual
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Cleaning - continued
TM 10-3930-673-34
3-7. CYLINDER HEAD ASSEMBLY REPLACEMENT/REPAIR (CONT)
(3)
Remove intake and exhaust valves (8
and 9) and parts (10 through 13) from
cylinder head (2).
NOTE
All 12 valves are removed the same
way.
(a)
Using valve spring compressor,
compress valve spring (10).
(b)
Remove and discard collet (11).
(c)
Release spring pressure and remove
spring compressor.
(d)
Remove spring retainer (12) and
spring (10).
(e)
Remove intake and exhaust valves (8 and 9).
(f)
Remove and discard valve stem seals (13).
c. Cleaning.
NOTE
If cylinder head and valve components are not to be assembled right away, lightly oil and
wrap the parts after inspection and before storing.
(1)
See cleaning instructions (Para 2-12).
(2)
Polish cylinder head gasket surfaces with scouring pads.
(3)
Clean carbon from intake and exhaust valves (8 and 9) and re-mark according to
location in cylinder head (3).
WARNING
Eye shields must be worn when cleaning with a wire brush. Flying rust and metal
particles may cause injury to personnel.
(a)
Clean intake and exhaust valve (8 and 9) heads with soft wire wheel.
(b)
Clean intake and exhaust valve (8 and 9) stems with crocus cloth.
WARNING
Fuel is very flammable and can explode easily. To avoid serious injury or death, keep fuel
away from open fire and keep fire extinguisher within easy reach when working with
fuel. Do not work on fuel system when engine is hot. Fuel can be ignited by hot engine.
When working with fuel, post signs that read NO SMOKING WITHIN 50 FEET (15 m).
(c)
Wash intake and exhaust valves (8 and 9) with fuel oil and wipe dry with clean lint-free rag.
3-40

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