TM 9-6115-624-BD
3-6. Gaskets, Engine. Engine cylinder head gaskets seal both compression and fluid galleries. Leakages
can be detected through:
lack of power,
rough, uneven engine operation,
abnormal pressure in crankcase or cooling system,
contaminants in oil or cooling system.
a.
Limitations.
Degraded power output. BDAR procedures are more difficult to perform on cylinder head gaskets but
limited operation can be restored. Frequent checks must be made for leakage and temperature
change.
b.
Personnel/time required.
1-2 soldiers/2.0-6.0 hours
c.
Materials/tools.
Epoxy (item 3, appx c)
Copper wire (item 33, appx c)
Hardening gasket sealer (item 14, appx c)
d.
Procedural Steps.
(1)
Option 1: Gasket sealer.
(a)
Remove cylinder head.
(b)
Locate leaking area.
(c)
Liberally coat leaking area with hardening gasket sealer.
(d)
Replace cylinder head, tighten mounting bolts or studs.
(e)
Check engine operation.
(2)
Option 2: Wire and sealer.
(a)
Remove cylinder head.
(b)
Remove gasket or O-rings.
(c)
Lay soft copper wire around each cylinder bore and trim to eliminate any overlap.
(d)
Reinstall old gasket coated with gasket sealer, varnish or paint.
(e)
Reinstall cylinder head, tighten mounting bolts or studs.
(3)
Other options: Continue operations.
3-3
