Go to Automatic
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
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
The advantages of a
manual diff lock include:
Can be controlled
by the driver.
remains "normal" on public roads.
(Manual lock is switched off)
No special oil is
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.