OPERATE IN SANDY OR DUSTY CONDITIONS.
M915A2 is equipped with No Spin® automatic lock-
ing positive traction differential on the forward-rear
axle; all vehicles except M915A2 are equipped with
No Spin® on both rear axles. The No Spin® differen-
tial eliminates individual wheel spinout for better
When locking system is engaged, driving axles
receive equal torque.
Maintain steady, even movement with transmission in lower gears
and interaxle lockout (all-wheel drive) in LOCK (ENGAGE) position. Try to keep vehi-
cle rolling without straining engine and powertrain.
For all vehicles except M917A1 and M917A1 w/MCS, if vehicle gets
stuck, reduce tire pressure to gain additional traction. Reduce pressure in front tires
to 50 psi and pressure in rear tires to 45 psi (302 kPa). Inflate tires to normal pres-
sures once vehicle is freed.
When resuming operation on highway surfaces, be sure
to reset CTIS selector panel to higher tire pres-
sures.Operating vehicle with underinflated tires will
cause premature tire wear or damage to tires. Failure to
follow this warning may result in death or injury to per-
For M917A1 and M917A1 w/MCS, select SAND mode key on CTIS
If M917A1 or M917A1 w/MCS gets stuck, select emergency (EMER)
on CTIS selector panel to reduce tire pressures to 30 psi (207 kPa). Do NOT exceed
10 mph (16 kph). Operation in this mode is limited to 10 minutes unless rese-
lected.Remember to reset to higher tire pressures when vehicle is freed.
If vehicle bogs down, after tire pressure has been reduced, place
boards, brush, canvas, or similar materials under and in front of tires after shoveling a
clear path ahead of each tire. This should improve traction.
If these efforts fail and it becomes evident that vehicle will not free
itself, use winch (M916A1/M916A2), if possible, or have another vehicle tow stuck