1 Weather cap
14
Nipple, 1 x 1 3/4 (2 req)
2 Nipple, 2 1/2 x 15
15
Hose clamp (4 req)
3 Bolt, hex hd, 3/8-16 x 1 (4 req)
16
Hose, 1 1/4 x 4 1/2 (2 req)
4 Lockwasher, 3/8 (4 req)
17
Clamp washer (4 req)
5 Connection
18
Intake manifold
Elbow, 3/8 x 1/4 M x 45
6 Gasket (2 req)
19
7 Welch plug, 1-inch (12 req)
20
Tube assembly
8 Exhaust manifold
21
Ventilation regulator
9 Washer, special, 7/16 (2 req)
22
Connection
10 Nut, hex 7/16-20 (6 req)
23
Nipple, 1 x 3
11 Bolt, hex hd, 7/16-14 x 1/4 (2
24
Stud (6 req)
req)
25
Manifold gasket
12 Lockwasher, 7/16 (2 req)
26
Pipe plug, 1-inch
13 Heat connection cover
Figure 55-Continued.
(4) Disconnect the tube assembly (20) from the elbow (19) in the intake manifold (18). Unscrew the bulb on the
(5) Remove four hex head bolts (3) and lockwashers (4) to detach the connections (5 and 22). Remove the
connections and the gaskets (6).
(6) Remove the six hex nuts (10), two special washers (9) and four clamp washers (17) from the studs (24) in
the engine cylinder head and lift off the exhaust manifold (8), intake manifold (18) and manifold gasket (25).
(7) Remove the nipples (14 and 23) and the pipe plug (26).
b. Cleaning and Inspection. Clean all parts, inside and out, with compressed air. Wipe grease and oil from the
manifold and gasket surface of cylinder head with a cloth dampened in cleaning solvent. The manifold gasket must be
discarded and replaced. Make certain that the manifold castings are not cracked or broken and that tubing and piping are
in good condition. Replace damaged parts.
c. Reassembly and Installation.
(1) Apply a coat of gasket cement to the gasket surface of the engine cylinder head and install the new manifold
gasket (25, fig. 55).
(2) Lift the exhaust manifold (8) up into position on the two outer studs (24) and install the special washers (9)
and hex nuts (10).
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