(14) Remove the six screws (6) and lockwashers (5) holding the flywheel shroud to the lower cylinder
shrouds (8) and cylinder heat deflectors (3). Then remove the two screws (6) and lockwashers (5)
holding the flywheel shroud to the gear cover and remove the flywheel shroud.
(15) Remove the screws (6) and lockwashers (5) securing lower shroud (8) and heat deflector.
b. Cleaning, Inspection, and Repair.
(1) Using a suitable cleaning solution, clean all housing, shrouding, and deflectors.
(2) Inspect all housing, shrouding, and deflectors for damage.
(3) Replace any damaged parts.
c. Reassembly.
(1) Position lower shroud (8) and heat deflector on engine and secure with screws (6) and lockwashers.
(2) Replace the flywheel shroud (9, fig. 11) on the gear cover. Install the two screws (6, fig. 23) and
lockwashers (5) holding the flywheel shroud to the gear cover. Install the screws (6) and
lockwashers (5) holding the flywheel shroud to the lower cylinder shrouds (8) and cylinder heat
deflectors (7).
(3) Replace the cylinder head covers (9) and secure with screws (6) and lockwashers (5).
(4) Replace the flywheel (1, fig. 22) on the crankshaft (9) and secure with nut (4) and washer (5).
(5) Drive the starting crank pin (10) into the hole in the crankshaft. Be sure that the pin is centered in
the crankshaft.
(6) Install the flywheel screen (6) on the flywheel shroud and secure with six screws (7) and
lockwashers (8).
(7) Connect the oil filter inlet and outlet lines (15 and 19, fig. 17) to t e oil filter with the nuts.
h
(8) Connect the governor control chain (23, fig. 21) to the governor control with cotter pin (24).
(9) Install the magneto stop switch (2, fig. 11) and secure with nut.
Warning: If NBC exposure is suspected, all air filter media should be handled by personnel wearing
protective equipment. Consult your unit NBC Officer or NBC NCO for appropriate handling or disposal
instructions.
(10) Connect the air cleaner hose (4, fig. 20) to the carburetor air horn and the air filter (2 ).
1
(11) Connect the oil pressure gage line to the oil pressure gage (4, fig. 11) and tighten the nut.
(12) Connect the choke wire (14, fig. 20) to the butterfly valve arm and tighten the setscrew.
(13) Position the canopy on the engine housing (8, fig. 4) and secure with eight capscrews (16, fig. 11)
and lockwashers.
(14) Screw muffler pipe into manifold.
(15) Screw muffler onto pipe.
69. Flywheel Assembly
a. General. The flywheel assembly contains fins to force air around the cylinder heads to facilitate cooling.
A ring gear on the flywheel provides an engagement surface for the starter gear.
b. Removal. Remove the flywheel assembly as described in paragraph68a.
c. Cleaning, Inspection, and Repair.
(1) Clean the flywheel assembly with an approved cleaning solvent. Brush all debris from the blower
fins, and all dirt from the ring gear teeth.
(2) Inspect the flywheel blower for cracks and other d mage. Replace as necessary.
a
(3) Inspect the blower fins for damage. Replace a flywheel with broken blower fins.
(4) Inspect the ring gear for chipped, cracked, or missing teeth. Replace as necessary.
70. Engine Doors
a. Cleaning.
(1) Clean the doors with an approved cleaning solvent.
(2) Brush all debris from the door screen.
b. Inspection and Repair.
Inspect the doors for dents, corrosion,
Change 7
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