Section XV. MAINTENANCE OF WHEELS

(2) Remove the suction and discharge gage

or other damage. The center flap must seat against the

valve seat, and must be smooth to form a proper seal.

piping from the pump (para 4-47).

(3) Disassemble the suction and discharge

Replace the valve if it is worn or damaged.

(4) Inspect the valve seat for chips or cracks.

assemblies as shown in figure 4-31.

b. Cleaning and Inspection.

Replace it if it is defective. You may reuse a valve seat,

but if there are any scratches or burrs on the face which

WARNING

contacts the valve, remove them with fine sandpaper

Clean all parts in a well-ventilated

before reassembly.

area. Avoid inhalation of solvent

(5) Remove all old gaskets from the pump

casting, elbow valve seat and coupling flanges. Clean

fumes and prolonged exposure of

the mating surfaces of these parts with a scraper or

skin to cleaning solvent.

Wash

knife to ensure a tight seal.

exposed skin thoroughly.

Dry

(6) Inspect studs, nuts, plugs, and coupling

cleaning solvent (fed. spec. P-D-680)

flanges. Replace any parts that have stripped or

used to clean parts is potentially

damaged threads.

dangerous

personnel

and

c. Installation.

property. Do not use near open

(1) Use all new gaskets when reassembling the

flame or excessive heat. Flash point

suction and discharge assemblies.

of solvent is 100 to 138F (38 to

(2) Install the assemblies as shown in figure 4-

59C).

31.

(1) Clean the exterior of the pump with a cloth

(3) Reconnect the suction and discharge gage

dampened with dry cleaning solvent (fed. spec. P-D-

piping (para 4-47).

680). Dry thoroughly.

(4) After assembly, start the pump, and check

(2) Inspect the pump for a cracked or dented

for leaks. Correct any leaks noted.

housing, suction coupling flange or discharge elbow.

Inspect the inside of the pump for signs of damage or

wear on the internal parts. Refer the pump to direct or

general support maintenance for repair or replacement.

(3) Inspect the check valve for cracks, tears,

Section XV. MAINTENANCE OF WHEELS

4-51. Tires and Tubes

4-50. Description

a. Removal.

a. The tire assembly includes the tire, inner tube,

(1) Jack up and block under the frame to raise

and flap. The tire size is 7.00-15, 6-ply rating, with a

the wheel from the ground. Remove the cap screws (1,

mud and snow tread. The tires are mounted on single-

fig. 4-32) that secure the assembled wheel, tire, and

piece wheels, and must be inflated to 40 psi.

b. The wheel assemblies consist of pressed steel

tube to the hub (15); remove the assembled parts.

(2) Deflate the inner tube. Use proper tire

wheels which are bolted to the hub assemblies. The

removal tools to remove the tire (3), tube (4), and flap

hub assemblies ride on tapered roller bearings on axle

(5) from the wheel (2), as indicated in figure 4-32.

spindles.

4-54