GMC 1976 ZEO 6083 Maintenance Manual page 295

6A- 30 ENGINE
Figure 10-Upper Venturi Ring Brackets
9 . Remove fuel line from fuel pump to carbu-
retor.
10 . Disconnect vacuum lines from the distributor
and tee as shown in Figure 14 . Disconnect vacuum
line from the front of the carburetor which leads to
the carbon canister . Referring to Figure 13, discon-
nect from the intake manifold-vacuum lines to the
brake booster (B), heater control (C) and cruise con-
trol (A) (if so equipped).
11 . Pull PCV valve from grommet in the right
valve cover.
12. Disconnect spark plug cables that lead to
cylinders No . 2, 4, 6 and 8 all on the right side, from
the spark plugs. Disconnect distributor cap and care-
Figure 1 1-Generator Mounting
fully position cap and cables to the left and free of the
work area .
13 . Remove coil mounting bolts, if so equipped .
Wires may be left connected to the coil if desired.
14 . Remove intake manifold bolts, then remove
manifold with carburetor attached .
15 . Clean machined surfaces of cylinder head and
intake manifold with a putty knife. Use care not to
gouge or scratch machined surfaces .
INSTALLATION
1 . Coat both sides of gasket sealing surface that
seal the intake manifold to the head with 1050026
sealer or equivalent and position intake manifold
gasket . (See figure 15).
2. Install front and rear end seals, making sure
that ends are positioned under cylinder heads as
shown in Figures 15 and 16 .
3. Install intake manifold . Lubricate bolts en-
tirely with engine oil, install and torque to 15 ft. lbs.
in sequence . See Figure 17 . Retorque in sequence to
40 ft . lbs.
4. Install coil mounting bolt, if so equipped, and
torque to 15 ft. lbs.
5. Install distributor cap and secure . Connect
spark plug cables 2, 4, 6 and 8 on the spark plugs.
WITH AIR CONDITIONING
20 FT . LB .
25 FT . LB .
FRONT
opr
25 FT . LB .
WITHOUT AIR CONDITIONING
A-4227