(2) Position the valve seat inserts (2),valve guides (4) and valve (1) in the cylinder block (3), and
install the
valve spring (9), valve spring seat(10), valve seat spring lock (11), and valve stem rotor cap (12)
securing the
valve (1) to the cylinder block (3).
h. Installation.
(1) Position the gasket (1, fig. 31) and cylinder block (3, fig. 41) on the engine crankcase and install
the lock-
washers (19, fig. 31) and nuts (20)securing the gasket (1) and cylinder block to the crankcase.
(2) Install the piston and connecting rod assembly (para. 1 Sf).
(4) Install the timing gear cover and accessory drive assembly (para. 131).
(5) Install the water pump and rear panel assembly (para. 127).
(8) Install the fuel pump and adapter(para. 80).
(10) Install the flywheel shrouding and fly-wheel (para. 69).
(11) Install the cylinder head shrouding(para. 68).
138. Camshaft Expansion Plug
a. Removal.
(1) Remove the engine and pump assembly from the water distributor (para.125).
(2) Remove the water pump and rear panel from the engine (para. 126).
(3) Remove the six bolts (28, fig. 40) and lockwashers (27) securing the main bearing plate (26) to
the crankcase and remove the main bearing plate, gaskets (22 and 25) and shims (23and 24).
(4) Using a punch, punch a hole in the middle of the camshaft expansion plug(5, fig. 31) and pry it
out.
(5) Scrape all residue from the expansion plug hole, making sure not to drop any debris inside the
crankcase.
b. Installation.
(1)Coat a new expansion plug (5, fig. 31)with gasket sealer, and position it in the camshaft hole (fig.
(2) Using a punch with a flat end, carefully drive the expansion plug (5) into the crankcase. Work the
punch around the outside edge of the expansion plug so that the plug goes into the crankcase
evenly.
(3) Position the main bearing plate gaskets (22 and 25, fig. 40) shims (23 and24) and main bearing
plate (26) on the crankcase and secure with six lock-washers (27) and bolts (28).
(4) Install the rear panel and water pump on the engine (para. 127).
(5) Install the engine and water pump assembly on the water distributor (para.122).
139. Engine Camshaft and Tappet Assembly
a. Description. The camshaft is forged cast with polished lobes and journals and a fuel pump eccentric
integral with the shaft. It operates the valve tappets and fuel pump. The two camshaft journals ride in honed
bores in the crankcase. The mushroom tappets have self-locking adjusting screws and ride in bores in the
crankcase. The crankshaft gear runs the camshaft gear. Both the crankshaft gear and camshaft gear have
match marks on the faces to facilitate timing.
b. Removal.
(4) Remove the flywheel and flywheel shrouding (para. 68).
(5) Remove the cylinder heads, (para.107b).
(6) Remove the fuel pump and adapter(para. 80b).
92