High Lifter Detroit Locker #4 - Manual (Page 9)

Controlled Document
F0325 (0999)
Installation Test
Step 1
With the engine turned off, raise driving axle(s) until all wheels are
out of contact with the surface. Place the transmission in gear so
that the drive shaft is locked and does not rotate.
Step 2
With two people, rotate both wheels forward, as far as possible to
lock both wheels. (Both wheels should stop after rotating a short
distance.)
Step 3
With the right wheel securely held in the forward direction, rotate
the left wheel rearward. The left wheel should rotate freely.
Step 4
With the left wheel slowly rotating rearward, the right wheel
should be rotated slightly rearward. This will lock both wheels.
Step 5
Again, rotate both wheels forward, as far as possible to lock both
wheels.
Step 6
With the left wheel securely help in the forward direction, rotate
the right wheel rearward. The right wheel should rotate freely.
Step 7
With the right wheel slowly rotating rearward, the left wheel
should be slightly rearward. This will lock both wheels.
Repeat steps 2-7 except, test for forward disengagement.
Operation Test
To check normal Detroit Gearless Locker differential operation,
drive the vehicle on a flat surface with good traction, in a right or
left circle in forward and reverse to be sure that the outside wheel
is free to overrun (i.e. that the outside tire does not scuff).
Caution: Do not operate the ATV if both wheels of
the Detroit Gearless Locker differential equipped axel
are not driving. Power to only one wheel can cause
serious steering problems and loss of vehicle control
and result in mishap, which can cause property
damage, injury, even death.