Section XII. MAINTENANCE OF WHEELS

the mounting nuts. If necessary, retighten them to

(3) Inspect the manifold for cracks, distor-

35 foot-pounds torque.

tion, broken mounting flanges, damaged threads,

and other damage; replace a damaged manifold.

4-34. Checking Engine Compression

(4) Inspect the manifold gasket inserts for

a. Low or uneven cylinder compression can

cracks, distortion, and other damage. Replace

cause the engine to run erratically, misfire, or even

broken or damaged inserts.

fail to start. If the engine has proper compression,

(5) Inspect remaining parts for cracks,

you will encounter considerable resistance in the

distortions, damaged threads, and other damage;

pull on the starting crank. If resistance is not en-

replace damaged parts.

countered, compression is faulty.

c. Reassembly and Installation.

b. The compression may be weak on an engine

(1) Reassembly and installation is the reverse

which has been out of operation for some time, for

of disassembly. Use new gaskets. Refer to figure 4-

the oil may have drained off the cylinder. You may

7. When you tighten the manifold mounting nuts

restore compression by removing the spark plugs

(5), torque them to 35 foot-pounds.

and pouring about 1 fluid ounce of oil into each

2) Install the carburetor (para 4-20).

cylinder.

3) Install the air cleaner piping (para 4-17).

c. Check each of the cylinders for uneven

4) Install the exhaust system parts (para 4-

compression with a compression pressure gage. If

15).

one or more cylinders indicate obviously lower

(5) After the engine has been run at operating

compression, report the trouble to direct support

temperature and has cooled, recheck the torque of

maintenance.

Section XII. MAINTENANCE OF WHEELS

hub assemblies ride on tapered roller bearings on

4-35. Description

axle spindles.

a. The tire assembly includes the tire and inner

tube. The tire size is 7.00-15, 8-ply rating, with a

4-36. Tires and Tubes

regular tread. The tires are mounted on single-piece

a. Removal. Deflate the inner tube. Use proper

wheels, and must be inflated to 60 psi.

tire removal tools to remove the tire and tube from

b. The wheel assemblies consist of pressed steel

the wheel, as indicated in figure 4-14.

wheels which are bolted to the hub assemblies. The

4-29