High Lifter DETROIT LOCKER #2 - Manual (Page 13)

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 held 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).
13