(5) Remove the timing gears (para. 455).
maximum. The main journal limits are
0.002 inch minimum to 0.003 inch
(6) Remove the carrier engine crankshaft and
maximum.
main bearings as instructed on figure 236.
(5) Inspect the crankshaft end play for 0.005
b. Disassembly. Disassemble the carrier engine
inch minimum to 0.008 inch maximum.
crankshaft and main bearings in numerical sequence as
(6) Inspect the crank pin. The diameter should
illustrated on figure 237.
be between 3.499 inch minimum and 3.500
464. Carrier Engine Crankshaft and Main Bearings
inch maximum.
Cleaning, Inspection and Repair
a. Cleaning. Clean all parts with an approved
465. Carrier Engine Crankshaft and Main Bearings
cleaning solvent and dry thoroughly.
Reassembly and Installatlon
b. Inspection and Repair.
a. Reassembly. Reassemble the carrier engine
(1) Inspect the crankshaft for scored or
crankshaft and main bearings in the reverse of the
damaged bearing journals, cracks, breaks,
numerical sequence as illustrated on figure 237.
or other damage, Replace a defective
b. Installation.
crankshaft as necessary.
(1) Install the crankshaft and main bearings as
(2) Inspect the connecting rod bearings and
Illustrated on figure 286.
crankshaft main bearings for scores,
cracks, breaks, or excessive wear.
(2) Install the timing gears (para. 457).
(3) Inspect the bearing caps for breaks, cracks,
(8) Install the pistons and connecting rods
or other damage. Replace a defective
bearing cap as necessary.
(4) Install the oil pump (para. 438).
(4) Inspect the crankshaft main bearing
(5) Install the flywheel housing (para. 449).
journals for a diameter of 3.749 inch
(6) Install the carrier engine (para. 298).
minimum to 3.750 inch.
Section XLV. CARRIER ENGINE BLOCK
466. General
b.
Remove engine from carrier (para. 298).
The carrier engine block is a solid, one-piece, iron alloy
c.
Remove the radiator (para. 407).
casting. It houses the crankshaft, camshaft, connecting
d.
Remove cylinder head (para. 428).
rods, pistons, and valves.
e.
Remove oil pan (para. 427).
The block has large water jackets which surround the
f.
Remove oil pump (para. 481).
cylinders to provide sufficient cooling.
g.
Remove valves (para. 428).
The intake valve seats are ground on the cylinder block
surface.
The exhaust valve seats are replaceable.
h.
Remove pistons (para. 435).
Drilled oil passages carry oil under pressure to all
i.
Remove flywheel and flywheel housing (para.
bearings and moving parts requiring lubrication.
j.
Remove crankshaft (para. 468).
467. Carrier Engine Block Removal
k.
Remove camshaft (para. 459).
a. Remove the carburetor, distributor, governor,
generator, starter, generator regulator, 256 water pump,
oil filters and spark plugs (paras. 86, 98, 87, 105, 102,
106, 149,161, and 100).
AGO 6819
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