TM 5-5420-226-20-1
P r e v e n t i v e M a i n t e n a n ce
Item
No.
30
Interval
Semiannual
C h e c k s a n d S e r v i c e s f o r M 4 8 A 5 A V L B H u l l -
Location
Item to
Check/Service
Sprocket Hub
Left and Right
Sides)
C o n t i n u e d
Procedure
Check that final drive hub mounting
nuts are tight. Do not tighten loose
mounting nuts, replace them.
Check that mounting holes are not
egg-shaped (out of round). Shiny
areas next to mounting nuts indicate
out of round holes.
Use a 0-600 lb-ft torque wrench to
tighten replacement nuts to 450-470
lb-ft (610-637 N•m).
Visually check final drive output
seal for leaks by inspecting lower
part of inboard side of drive sprocket
for evidence of oil. If oil is present,
notify support maintenance final
drive seal is defective.
Not Fully Mission
Capable if:
Any nuts missing
or loose.
Mounting holes
are out of round.
Any class III
leak.
Change 6
3-37
