TM 9-2320-273-20
EXHAUST SYSTEM.
4-37. MUFFLER MAINTENANCE (Continued).
LOCATION/lTEM
ACTION
REMARKS
A. REMOVAL (Continued).
3. Four bracket bolts (7), bracket
Unscrew and remove U-
washers (8) and insulators (9).
clamp bracket (6).
4. Two U-clamp nuts (20) and
Unscrew and remove U-
U-clamp washers (14).
clamp (18) and spacer (19).
5. Muffler (10) and exhaust
Remove from flex pipe (15).
If muffler (10) is to be re-
stack (13).
placed, pull exhaust stack
(13) from muffler.
6. Four bracket bolts (1), bracket
Unscrew and remove U-
washers (21), and insulators (2).
clamp bracket (3).
7. Coupling (16).
Slide off of flex tube (15).
Discard coupling (16).
B. INSPECTION OF MATING FLANGES.
8. Flex pipe (15), muffler (10),
Inspect pipe ends for:
Replace as necessary.
and exhaust stack (13).
a. Burrs.
b. Cracks.
c. Distortion.
C. INSTALLATION.
9. Four insulators (2) and U-
a. Position to cab.
clamp bracket (3).
b. Install with four bracket
bolts (1) and bracket
washers (21).
10. Four insulators (9) and
a. Position to cab.
U-clamp bracket (6).
b. Install with four bracket
bolts (7) and bracket
washers (8),
11. New coupling (16).
Slide over flex pipe (15).
12. Exhaust stack (13).
Slide into top of muffler (10).
If removed.
13. Muffler (10) and exhaust
Slide into flex pipe (15).
stack (13).
14. Coupling (16).
Slide up over connection of
muffler (10) and flex pipe (15).
15. Two coupling nuts (17).
Tighten to 45 Ib-ft (61 N·m)
with torque wrench.
16. U-clamp (18) and spacer (19).
Position around muffler (10)
at U-clamp bracket (3).
4-132
