TM 10-4320-309-14
TM 4320-14/1
3-21. REPLACE/INSPECT EXHAUST SILENCER/SPARK ARRESTOR
This task covers:
a) Removal
c) Installation
b) Inspection
INITIAL SETUP
Tools
Tool Kit, General Mechanics (Item 2,
Appendix B, Section III)
Socket Set, 8 to 19 mm (Item 6,
Appendix B, Section III)
Wrench, 10 mm (Item 15,
Appendix B, Section III)
REMOVAL:
Materials/Parts
None
Equipment
Condition
Para
3-16
Inlet sound enclosure assembly
removed
3-17
Outlet sound enclosure assembly
removed.
Make sure engine has cooled down before performing
maintenance on exhaust silencer/spark arrestor. Exhaust
system is very hot during operation and severe bums
could result.
a.
Remove exhaust extension pipe by removing clamp.
b.
Remove heat shield (4) by removing six screws (5).
c.
Remove two hex head nuts (2) securing the exhaust silencer/spark arrestor (3) to studs on the exhaust
port of the engine.
d.
Remove two hex head screws (6) securing the exhaust silencer/spark arrestor bracket to the rear of the
engine.
e.
Carefully lift off exhaust silencer/spark arrestor (3) and gasket (1) from the studs.
INSPECTION:
a.
Carefully inspect exhaust silencer/spark arrestor (3) for cracks, rust, or pin holes.
b.
Replace gasket (1) at reassembly.
INSTALLATION:
a.
Place gasket (1) onto the studs at the engine exhaust port.
b.
Carefully position exhaust silencer/spark arrestor (3) onto the studs and lineup holes in bracket with
rear mounting holes in the engine.
c.
Secure with two hex head nuts (2) onto the studs and two hex head screws (6) in the mounting holes.
3-31
