TM 10-8145-222-23
0039
REPLACE CONTINUED
WARNING
The exhaust system will become extremely hot after a short period of operating time.
Allow engine to cool for 30-minutes before performing maintenance.
NOTE
Note orientation of rain cap before removal so that it can be installed with the same
orientation.
7. Remove muffler rain cap (Figure 4, Item 1) per this WP. Retain serviceable rain cap for reinstallation.
8. Remove two nuts (Figure 4, Item 7) securing muffler clamp (Figure 4, Item 8) and U-bolt (Figure 4, Item 9) to
muffler pipe (Figure 4, Item 6). Retain hardware.
NOTE
Exhaust manifold mount nuts frequently rust in place. The use of penetrating oil will
help loosen nuts up from manifold.
Due to exposure to environmental elements, the muffler pipe frequently rusts to the
muffler making it difficult to remove without damage.
When replacing muffler, always replace muffler pipe and U-bolt at the same time.
9. Remove four nuts (Figure 4, Item 10) and four washers (Figure 4, Item 11) securing muffler (Figure 4, Item 12)
to exhaust manifold (Figure 4, Item 13).
10. Loosen two bolts (Figure 4, Item 14) and washers (Figure 4, Item 15) securing opposite end of muffler
(Figure 4, Item 12) to mount bracket (Figure 4, Item 16) in two places.
11. Remove one bolt (Figure 4, Item 21) and washer (Figure 4, Item 22) securing bottom angle (Figure 4, Item 20)
to flywheel housing (Figure 4, Item 17) in one place.
12. Remove muffler (Figure 4, Item 12) and exhaust manifold gasket (Figure 4, Item 18) from exhaust manifold
(Figure 4, Item 13).
13. Install new exhaust manifold gasket (Figure 4, Item 18) with steel side facing up towards muffler (Figure 4,
Item 12) onto exhaust manifold studs (Figure 4, Item 19).
14. Install new muffler (Figure 4, Item 12) onto exhaust manifold (Figure 4, Item 13) and secure with four nuts
(Figure 4, Item 10) and washers (Figure 4, Item 11).
15. Secure bottom angle of muffler (Figure 4, Item 20) to flywheel housing (Figure 4, Item 17) using one bolt
(Figure 4, Item 21) and washer (Figure 4, Item 22).
16. Tighten bolts (Figure 4, Item 14 and Item 21) (WP 0091).
