Manual Diff Locks

Go to Automatic Diff Locks

Manual diff locks come in many varieties. The manual locking differential is one which has some driver activated locking mechanism.

The manual diff lock is generally machined to the differential and uses compressed air, vacuum or mechanical actuation. The general method is to lock one axle gear to the carrier, thus locking up the whole planetary gear assembly. Manual locking differentials are usually de-faulted to the free position to prevent lock-up on a public road.
Manual locking differentials also use cables, hoses, fittings, switches etc., and are usually supplied in kit form. In most cases manual locking differentials can be locked and un-locked on the move.

The advantages of a manual diff lock include:

• Can be controlled by the driver.

• The vehicle remains "normal" on public roads.
  (Manual lock is switched off)

• No special oil is required.

• Can be used in week-end drag racing.
  (Can be switched on at the track).

MANUAL DIFF LOCKS WILL NOT CHANGE THE VEHICLE DRIVING CHARACTERISTICS ON A PUBLIC ROAD.