Land Cruiser manual - Advance Adapters

allows for a quicker release than a standard GM bearing. This bearing is
designed to fit the stock GM release arm.
On Chevy engine conversions retaining your stock Toyota 4 speed, the stock
release bearing is a 2-piece setup - a collar that connects to the release arm and
the bearing. The stock bearing must be removed from the collar and Part No.
716314 installed in its place. This bearing diameter has a radius face and is similar
to the stock Land Cruiser bearing. This bearing is supplied in our kit as well as
the Mark’s 4WD adapter kit. On the inside of the bearing collar, you will find a small
cavity that must be packed with grease to ensure smooth clutch operation.
On Ford engine conversions retaining the stock Toyota 3 speed transmission or upgrading
to a Ford transmission, release bearing P/N 716311 will be required. When retaining your
stock Toyota 4 speed with a Ford engine conversion using the Mark’s 4WD adapter kit, the kit will
be supplied with release bearing P/N 716313. Both these bearings are flat-face and are designed to work with the Centerforce
high diaphragm pressure plate.
Stock Stock Land Land Cruiser Cruiser 4 4 Speed Speed Conversions:
Conversions:
1974 model Land Cruiser owners will be required to purchase a new release bearing collar. The original collar is too small to be
used with the new release bearing that is being provided in the 4 speed conversion kits. On these early 4 speed applications, you
will need to purchase the two Toyota part numbers listed below.
Toyota# 31231-60070 - Bearing Collar (2.062” Dia.)
Toyota# 31232-60010 - Bearing Collar Clips (2 Required)
CLUTCH RELEASE LEVERS:
When using a standard GM bellhousing, we recommend the stock GM cast iron release arm, P/N 716176 (GM# 15687296). On
Ford applications, the stock release lever from your Ford bellhousing should be used. Applications retaining the stock 4 speed using
our bellhousing or Mark’s 4WD bellhousing will retain the stock Land Cruiser release arm. On a Land Cruiser 4 speed conversion,
the lever will protrude on the passenger side. When using a GM or Ford bellhousing, the release lever will protrude on the driver's
side.
In order for the Toyota slave cylinder to properly disengage the GM release arm, you must fit the Toyota push rod into the inner slot
of the release arm. This will provide additional movement of the clutch release lever.
Replacement Replacement Parts Parts for for a a Land Land Cruiser Cruiser Cruiser stock stock 4 4 Speed:
Speed:
Toyota# 31204-60030 - Release Arm
Toyota# 31236-60020 - Ball Pivot
Toyota# 31126-60021 - Rubber Boot
PILOT BUSHINGS:
The pilot bushing that supports the tip of the transmission shaft should be inspected for excessive wear. On Chevy V8 conversions,
the original GM pilot bushing diameter will require no changes since it is compatible with the Toyota 3 & 4 speed transmissions.
On Ford V8 conversions to the stock Toyota 3 & 4 speed transmissions, you will need to install the new pilot bushing supplied with
your kit. When using a GM 4 speed transmission with the stock Land Cruiser 6 cylinder engine, you will need to install our special
pilot bushing into the 6 cylinder crankshaft.
P/N 716170 - Pilot Bearing (GM engine to Toyota 3 & 4 speed transmissions)
P/N 716153 - Pilot Bearing (Ford engine to Toyota 3 & 4 speed transmissions)
P/N 716157 - Pilot Bearing (Toyota 6 cylinder to GM transmission)
CLUTCHES & RELATED COMPONENTS:
When converting to a V8 engine and using an aftermarket clutch assembly, you may have difficulty attempting to get your clutch to
release properly. On Toyota Land Cruiser conversions, you must use a specific pressure plate and clutch disc. With the help of
Centerforce Clutches, we have developed a clutch assembly that operates perfectly with the original Land Cruiser slave cylinder
and master cylinder. This pressure plate is a short throw, quick ratio, diaphragm-type pressure plate that requires very little slave
cylinder movement. We stock the Centerforce clutches as standard items and they can be obtained from us directly. If the correct
clutch is not used, you may experience inadequate clutch disengagement.
20 CLUTCH COMPONENTS