PS Magazine - TB 43-PS-733
PS, The Preventative Maintenance Monthly
ISSUE 733
DECEMBER 2013
8
PS 733
DEC 13
9
PS 733
DEC 13
Loose roadwheel nuts are all but
inevitable, considering the weight and
pressure
they’re
under.
Just
because
they’re torqued in place doesn’t mean
they’ll stay that way.
And when even one nut loosens, that
increases the pressure on the rest. Pretty
soon, there’s a chain reaction of loose
nuts, wobbly road-wheels and snapped
studs. That can cause a thrown track and
a big headache!
Spot loose nuts before they cause any
trouble. Look for shiny spots around the
Fat washer under the roadwheel nut.
Replace missing nuts with NSN 5310-
01-064-3910 and Fat washers with NSN
5310-00-809-9514. Retorque loose nuts
to 320-350 lb-ft for the M88A1 and
350-400 lb-ft for the M88A2.
Dear Half-Mast,
I’m confused about the right way to rotate the scissoring cable strands
on AVLBs.
Page 2-31 in TM 5-5420-203-14 (Jun 91, w/Ch 2, Jun 97) shows the
right-side rotation as counterclockwise and the left-side as clockwise.
But Page 3-21 shows the right-side rotation as clockwise and the left-
side as counterclockwise.
What’s the right rotation for the cable strands?
SPC D.B.
Dear Specialist D.B.,
You’re right. The information in TM 5-5420-203-14 is confusing. And if the
cables aren’t rotated the right way, they can ride up on the grooved rims of the
cable lays and damage the quadrant. You might even end up dropping the bridge!
Until the TM is corrected, note that Page 3-21 shows
the proper rotation, which is clockwise for the right side
and counterclockwise for the left side.
Cable rotation
clockwise
Cable rotation
counterclockwise
Detail A
A
B
Detail B
M88-Series
Recovery
Vehicle…
Torque Nuts RIGHT
to Keep ‘Em TIGHT
W
O
B
B
LE
W
O
B
BLE
W
O
B
BLE
W
O
B
BL
E
W
O
B
B
L
E
W
O
B
B
L
E
AVLB…
Don’t
Rotate
Just
Any Ol’
Way!
Mechanics,
one
loose
roadwheel nut
on your M88-
series recovery
vehicle could
mean calling
someone to
tow
YOU
back
to the motor
pool!
Loose nut
can damage
roadwheel
Oh, Man!
somebody
shoulda
tightened
my
roadwheel
nuts!
lemme guess… you installed the
scissoring cables with the strands
rotated the
wrong
way?
I folLowed
the TM!
733 08-09.indd
1-2
10/28/13
5:52 PM
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