PS Magazine - TB 43-PS-568
PS, The Preventative Maintenance Monthly
ISSUE 568
MARCH 2000
PS 568
11
MAR 00
here’s a reason wheel studs are marked with Ls or Rs, and it has everything to
do with keeping the wheels on your medium and heavy tactical trucks.
Studs marked with a capital L must be used only on wheels on the driver’s side
of a vehicle. Left-hand studs have left-hand threads that tighten to the left
(counterclockwise). If studs marked with a capital L are used on right (passen-
ger) side wheels, the wheel nuts will work loose.
Studs marked with a
capital R must be used
only on wheels on the
passenger’s side of a
vehicle. Right-hand
studs have right-hand
threads that tighten to
the right (clockwise).
If studs marked with a capital R are used on left (driver) side wheels, those
wheel nuts will loosen, too.
Keep the wheels on your trucks by eyeballing all wheel studs right now. It’s
especially important for trucks that are new to your unit and trucks that have had
wheel or hub maintenance performed lately.
perators, the last thing you want
in a
tactical
situation is a backup alarm
going off on your truck or construc-
tion equipment.
So, make sure it won’t.
On M915/A1/
A2-series trucks,
use the switch on
the dash to shut
off the alarm.
On CAT
equipment, like
the 130G grader,
621B scraper or MW24C scoop loader,
turn the light switch to a B.O. (black-
out) position or OFF to kill the alarm.
Tactical Trucks . . .
Switch alarm to OFF
Put pulled fuse in spare slot
Put ‘R’ studs on right side of vehicle, ‘L’ on left
Other types of commercial construc-
tion equipment have a fuse for the
alarm
system. So,
you’ll have
to pull the
fuse and
store it in
an unused
spare slot.
If your
vehicle
doesn’t have
either a
switch or a
separate fuse, check the wires at the
alarm for a connector. Pull the connec-
tor apart carefully so you can put it
back together later.
When you’re operating your gear
without the backup alarm, use a ground
guide and lots of extra caution when
backing.
There
they
are!
their
beeper
gave them
away!
I'm
the
right
stud for
the
right
side!
I'm
the
right
stud for
the
left
side!
Trucks, MHE/CCE . . .
Turn grader’s switch to BO or OFF
PS 568
11
MAR 00
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