Section IX. MAINTENANCE OF SEMI-TRAILER

3-25. Cable Spreader Heads

3-27. Ground Rods and Cables

a. Inspect the spreader bar for straightness, the

a. Inspect ground rods for straightness, I nicks or

end plates are not loose, the surface for scratches or

bends, clean and free from dirt and fun growth.

digs.

b. Inspect cables for broken strands, bad kin dirt

b. If bar is bent have it straightened.

and fungus growth.

c. If end plate loose have rewelded.

3-28. Cable Splice Kits

d. Clean and repaint scarred areas.

a. Check high voltage splice kit to see that i

complete.

3-26. Access Ladder

b. Check low voltage splice kit to see that is

Inspect the ladder for loose steps, bent sides, bent hand

complete.

rail, and that pivot of the top landing is working.

Section IX. MAINTENANCE OF SEMI-TRAILER

3-29. General

3-30. Under ,Carriage Assembly

Instructions contained in this section are for operators

a. Inspect the suspension for loose bolts and worn

information and guidance in maintenance of the semi-

or damaged parts. If bolts are found to be loose they

trailer.

should be retorqued to:

1/2 inch

adjustable torque arm

45-55 foot pounds

clamp bolt

5/8 inch

equilizer step bolt

75-90 foot pounds

7/8 inch

"U" bolt

225-250 foot pounds

1 inch

torque arm bolts

350-375 foot pounds

Torque specification call for clean dry threads, use of

b. Inspect brake hose assembly to see that the

lubricants or sealants reduce requirements.

lines are not pinched or cracked, hose is not " torn or

frayed, all connections and air hose fittings are tight.

b. Lubricate in accordance with current Lubrication

Order.

3-35. King Pin Fifth Wheel

Visually inspect king pin for cracks, gouges or burrs.

Report cracks and deep gouges to Direct Support

3-31. Tires

Maintenance. Remove burrs and clean. Lubricate pin

a. Inspect the tires for cuts, bruises, breaks,

with G A A grease (automotive and artillery ).

blisters, uneven wear, embedded foreign matter and

damaged valve stems.

3-36. Lamp Bulbs

b. Check for correct tire pressure and missing

valve caps. Correct tire pressure is 85 lbs.

a. General. Inspect all lamps to see that they are

intact and functioning properly Replace bulbs that are

3-32. Axle Hub

burned out. Use only the proper bulb replacement. This

a. After unit has set sufficient time to allow oil to

system has been designed for a specific load and any

drain to static condition, oil level can be seen and

variance from this load could burn out the resistors in

should be maintained at oil level as shown on

the nose box.

transparent hub cap.

b. Replacement of Clearance Marker Lamps.

b. Use lubricant

accordance

with

current

Lubrication Order.

(1) Place blade of screw driver in slot on one

end of holder and twist, lens snaps off from holder

3-33. Landing Gear

(2) Remove burned out or broken bulbs.

a. Inspect for loose or missing bolts, worn or dam

(Two bulbs per holder).

aged parts, and that each leg has an operative grease

fitting.

(3) Insert and secure new bulb or bulbs.

b. Tighten or replace all missing or loose bolts,

Socket and bulb base are the bayonet type. Always

replace missing grease fitting.

replace with recommended bulb. Do not substitute.

c. Report damaged or worn parts.

(4) Replace lens by engaging one end in the

recess around holder, then snapping other end in place.

d. See paragraph

2-22

for

removal

and

replacement.

3-34. Valves

a. Inspect chamber for dents and leaks, chamber

linkages for binds. all mounting bolts tight.

3-23