TM9-2330-368-14 & P
Page
Page
Hubs and Drums . . . . . . . . . . . . . . . . . . . . ...4-22
Air Lines . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-30
Service Brakes . . . . . . . . . . . . . . . . . . . . . 4-24
Air Valves . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-33
Brake Air Chamber . . . . . . . . . . . . . . . . . . ...4-29
Air Tanks . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-36
(10) Remove nut (6) and outer bearing cone
4-14. HUBS AND DRUMS
(8).
Materials/Tools
(11) Remove hub-drum assembly (9 through
16) as a unit and place on clean work
Dry cleaning solvent (item 3, app E)
surface with hub (7) upward.
(12) Using brass drift drive out bearing cone
(9) and seal (10) and then drive out
bearing cup (11).
General mechanics tool kit
(13) Turn unit so hub is down. Using brass
Bearing nut wrench, 3/4 inch drive, 3-1/4 inch
drift drive out bearing cup (12).
Bearing nut wrench, 3/4 inch drive, 3-7/8 inch
Torque wrench, 3/4 inch drive, 0-600 lb-ft.
(14) Only remove back nuts (13), washers
Two pry bars
(14) and drum (15) from hub (7) if
studs (16) are damaged.
a. Removal.
(15) Remove studs ( 16) from hub (7) only
(1) Chock wheels.
if damaged.
(2) Drain air tanks.
b. Cleaning.
WARNING
Dry cleaning solvent (P-D-680) used
to clean parts is potentially dangerous
to personnel and property. Do not use
near open flame or excessive heat.
(6) Remove six hex bolts (1), hub cap (2)
Flash point of dry cleaning solvent
and gasket (3).
is 138F (59C).
(7) Remove outer spindle nut (4) using 3-
(1) Clean all parts thoroughly using a brush
1/4 inch bearing nut wrench and ratch-
and dry cleaning solvent. Allow to air
et. Remove spindle lock (5).
dry.
(8) Loosen inner spindle nut (6) using 3-
(2) Clean spindle (17) on axle (18) with
7/8 inch bearing nut wrench and ratch-
wiping cloth.
et until nut is flush with outside edge
of hub (7).
c. Inspection.
(9) Using two pry bars force hub-drum
(1) Inspect bearings visually for wear and
assembly (7 through 16) out against
scoring flat spots and overheating
nut (6).
(discoloration).
4-22