Case Series C - Cylinder Head Removal (Six Cylinder)

22-8
CYLINDER HEAD AND COMPONENTS
Six Cylinder 401 B Engines
(Refer to Figure 6)
Removal
Remove the muffler and hood from vehicle. Disconnect the exhaust system and air cleaner
from the manifolds. Steam clean the entire area where service work is to be performed.
1. Drain the cooling system.
CAUTION
If
the engine is hot, do not remove the rad-
iator cap until the coolant has had suffi-
cient time to cool. Loosen the cap to the
first stop carefully to relieve any excess
pressure before removing it completely.
Remove the upper radiator and water
pump hoses.
2. Disconnect the high pressure fuel lines
from the injectors and the leak-off lines
between the cylinder heads. Cap them to
prevent any foreign particles from enter-
ing. Remove the injectors as described in
Section 33 of the Service Manual.
3. Remove the breather tube (1) and discard
the gaskets (2) .
4. Remove the intake manifold (3) and discard
the gaskets ( 4) .
5. Remove the exhaust stack (5) if equipped.
Remove the exhaust manifolds (6) and
discard the gaskets
(7).
6. Remove the water manifold (8) and discard
the gaskets (9) .
NOTE
If
the thermostats
are to be serviced, remove the housing
(10) and refer to Section 25 of the Service
Manual.
7. Remove the valve cover nuts (11) , bevel
washers (12), gaskets (13), valve cover
(14) and cover gasket (15). Discard gaskets
(13 and 15).
8. Remove studs (16)and washers (17). Re-
move the rocker arm assembly (18).
NOTE
Tag the rocker arm assemblies for prop-
er assembly. Refer to Page 22-16 for roc-
ker arm servicing. Remove the push rods
(19). Tag the push rods for proper assembly.
9. Remove the cylinder head bolts and wash-
ers (20). Remove the cylinder head assem-
bly (21), fire rings (22) and head gaskets
(23). Discard the fire rings and head gas-
ket. See Page 22-18for servicing of the
cylinder head.