Section 03 ENGINE
Sub-Section 03 (454, 494, 583 AND 670 ENGINE TYPES)
03-03-9
EXHAUST SIDE
1. Larger holes
All Models
2, Cylinder Head Screw
Torque cylinder head screws following illustrated
sequence. On 583 and 670 engines longer
screws go on intake side.
Torque screws
no. 1
to 10 N•m (90 lbf•
in
).
RAVE SYSTEM
Install exhaust valve in cylinder with its mention
TOP upward (see illustration at removal).
Install gasket and valve rod housing with their pas-
sages toward bottom.
1. Passages
Torque cylindrical screws to 10 N•m (90 lbf•
in
).
Check free sliding action of valve.
Install bellows over valve rod housing groove and
secure with a clamp. 454 engine has no clamp.
Screw by hand valve piston on valve rod until it
bottoms.
Secure bellows to valve piston with a clamp
(spring on 454 engine.)
Install spring, cover and spring clip. Turn adjust-
ment screw by hand until it bottoms.
ENGINE
TYPE
CYLINDER HEAD SCREWS
TIGHTENING TORQUE
454, 494, 583
and 670
29 N•m (21 lbf•ft)
Apply grease under screw head
A24C07A
1
A24C0JA
5
11
1
12
6
4
3
2
7
9
8
10
1
A24C08A
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