c. Repair. Replace all gaskets and any damaged
items with like serviceable items. Clean all parts in an
approved cleaning solvent and dry thoroughly.
d. Replacement. Replace the exhaust manifold as
(1) Position gasket on intake manifold, place
exhaust manifold on intake manifold, and install four
bolts and four lockwashers.
(2) Position gaskets on manifold ports and
install manifold on engine. Install clamps on the studs at
each end of manifold and secure with manifold nuts.
Install remaining manifold nuts on remaining studs.
Reconnect vent hose and starting aid fuel line to intake
3-46. Intake Manifold
The intake manifold is removed from the engine when
45 and remove the intake manifold.
3-47. Muffler and Exhaust Pipe
a. Removal. Remove the muffler and exhaust pipe
(1) Stop the engine and allow the muffler and
the bolts and nuts holding the guard to the supports.
(2) Remove the nuts, lockwashers and muffler
clamps. Remove the muffler and exhaust elbow from
Figure 3-30. Oil temperature sender, removal and
the exhaust pipe. Remove the cap- screws, nuts, and
remove the exhaust and gasket.
3-45. Exhaust Manifold
b. Replacement. Replace the muffler and exhaust
a. Inspection. Inspect manifold for cracks, breaks,
pipe as follows:
(1) Install a new gasket on the exhaust
b. Removal. Remove the exhaust manifold as
manifold, place the exhaust pipe on the exhaust
manifold, and secure with capscrews, nuts, and
(2) Install the exhaust elbow in muffler, and then
muffler and exhaust pipe.
clamps. Install the guard on the supports.
(2) Disconnect vent hose and starting aid fuel
line from intake manifold.
3-48. Coolant System
a. General. The cooling system consists of a
radiator, water pump, a thermostat, fan, and
nuts, washers and clamps. Remove exhaust and intake
manifold from engine.
bottom of intake manifold, and remove exhaust manifold