(2) Install new packing (6) in the pipe cap (5).
(3) Install the bottom (10) and top (9) deflectors in the bottom cover (12) of the muffler.
(4) Install the top cover (8) and tighten the mounting bolts (20) and nuts (21).
(5) Connect tile muffler nipple (7) with the top cover (8) and install the exhaust pipe (4) and pipe cap (5) with
packing (6).
(6) Install the pipe elbows (2) and connecting pipe (3).
g. Installation.
(1) Attach the muffler assembly to the mounting brackets (16 and 19) and tighten the mounting bolts (11),
lockwashers (15), and nuts (14).
(2) Install the pipe nipple (1) and connect it with the exhaust manifold.
(3) Tighten the pipe nipple (1) securely.
(4) Start the engine and check the exhaust pipe and muffler for proper operation.
Note. Do not be alarmed if a new exhaust pipe or muffler will start smoking after a few minutes of
operation. This is caused by the evaporation of protective paint or oil. The smoking will stop after a short
while when the exhaust pipe gets hot.
Section XI. CYLINDER HEAD AND VALVES
134. Description
The cylinder head is of the conventional cast iron type and is attached to the engine block with flat washers and hex head
screws. The cylinder head gasket is made either of copper or steel and asbestos. The intake and exhaust valves are held
in position by retaining pins. The exhaust valves are self-rotating and are held in position by retaining keys. The angle of
the intake valve seat is 30 and that of the exhaust valve is 45. The valves can be reached for inspection and
1
Pipe nipple
12 Muffler bottom cover
2
Pipe elbows (2 req'd)
13 Bolts, hex hd, 1/2-13 NC x 2 3/4 (4
3
Connecting pipe
req'd)
4
Exhaust pipe
14 Nuts, hex, 3/8-16 NC (4 req'd)
5
Pipe cap
15 Washers, lock, std, 3/8 (4 req'd)
6
Packing
16 Mounting bracket, right hand
7
Muffler nipple
17 Nuts, hex, 1/2-13 NC (4 req'd)
8
Muffler topcover
18 Washers, lock, std, 1/2 (4 req'd)
9
Deflector, top
19 Mounting bracket, left hand
10
Deflector, bottom
20 Muffler bolts (3 req'd)
11
Bolts, hex hd, 3/8-16 NC x 1 1/4 (4
21 Muffler bolt nuts (3req'd)
req'd)
Figure 47. -Continued.
133
