Chevrolet Light Duty Truck 1973 Service Manual page 389

Fig. 9V—Compressing Valve Spring
5. Remove cylinder head bolts, cylinder head and
gasket. Place cylinder head on two blocks of wood
to prevent damage.
Installation
CAUTION:
The gasket surfaces on both the
head and the block must be clean of any
foreign matter and free of nicks or heavy
scratches. Cylinder bolt threads in the block
and threads on the cylinder head bolts must be
clean. (Dirt will affect bolt torque).
1. On engines using a STEEL gasket, coat both sides
of a new gasket with a good sealer. Spread the
sealer thin and even. One method of applying the
sealer that will assure the proper coat is with the
use of a paint roller. Too much sealer may hold the
gasket away from the head or block.
CAUTION:
Use no sealer on engines using a
composition STEEL ASBESTOS gasket.
Place the gasket in position over the dowel pins
2.
with the bead up.
3. Carefully guide the cylinder head into place over
the dowel pins and gasket.
4. Coat threads of cylinder head bolts with sealing
compound and install bolts finger tight.
5. Tighten each cylinder head bolt a little at a time in
the sequence shown in the torque sequence chart
until the specified torque is reached.
6. Install exhaust manifolds as outlined.
7. Install intake manifold as outlined.
J -2 3 5 9 0
8. Install and adjust valve mechanism as outlined.
Oil Pan
Removal
1. Drain engine oil.
2. Remove oil dip stick and tube.
3. On vehicles so equipped remove exhaust crossover
pipe.
4. On vehicles equipped with automatic transmission
remove converter housing under pan.
5. Remove starter brace and inboard bolt, -swing
starter as^de.
a. Remove engine front mount bolts (frame
6. Remove oil pan and discard gaskets and seals.
Installation
1. Thoroughly clean all gasket and seal surfaces on oil
pan, cylinder block, crankcase front cover and rear
main bearing cap.
2. Install new oil pan side gaskets on cylinder block
using gasket sealer as a retainer. Install new oil pan
FRONT
SEAL
Fig. 10V—Oil Pan Gasket and Seal Location
bracket-to-mount).
LIGHT DUTY TRUCK SERVICE MANUAL
E N G IN E 6 - 5 3