c. Inspect the engine block for cracks, breaks,
The intake valve seats are ground on the cylinder block
surface. The exhaust valve seats are replaceable.
scored cylinder walls, and worn machined surfaces of
Drilled oil passages carry oil under pressure to all
the block. Check with straight edge and feeler gage. If
bearings and moving parts requiring lubrication.
machined surfaces are worn or warped more than 0.010
inch, replace block as necessary.
d. Inspect all threaded holes for damaged or
Carrier Engine Block Removal
elongated holes. Replace all freeze plugs.
e. Inspect cylinder diameter for 5.375 inch
a. Remove the carburetor, distributor, governor,
minimum to 5.377 inch maximum.
generator, starter, fuel pump, generator regulator, water
f. Inspect the block main bearing bore for 4.002
pump, oil filters, and spark plugs (TM 53810-207-20).
inch minimum to 4.003 inch maximum.
Carrier Engine Block Installation
c. Install the flywheel housing and flywheel (par.
i. Remove flywheel and flywheel housing (par.
k. Install the oil filter, water pump, spark plugs,
a. Soak the engine block in a strong caustic solvent
generator regulator, fuel pump, starter, generator,
for two hours; clean with live steam.
governor, distributor, and carburetor (TM 5-3810-207-
b. Clean and blow out all oil and water passages
with compressed air.