Land Cruiser manual - Advance Adapters

24
NYLON LOCKNUT: We supply a new 7/8”-16 nylon lock nut and flat washer for your conversion. When installing one of our transfer
case adapters, this nut secures the drive gear and P.T.O. gear onto the transmission output shaft or our spud shaft. This nut is a
standard item that is used on most Jeep transfer cases. It does not require the use of a cotter pin to lock the nut in position. The
nut must be replaced every time it is removed from the shaft. Nuts that are reused could possibly loosen up after continual use.
This nut must be used with the new flat washer. The nut must be torqued to a maximum of 75 ft./lbs. in order to prevent bearing
pre-load. This nut replaces the bushing, tabbed washer, and lock nut used on the original transmission and transfer case assembly.
On some of the newer transfer cases, the adapter kit will sometime reuse the stock locknut that was originally equipped on the transfer
case.
Early model stock 3 & 4
speed Land Cruiser
transfer case linkage
GM automatic to Split-case transfer case linkage pivot bracket
TRANSFER CASE LINKAGES
TRANSFER CASE LINKAGES
The 3 speed transfer case vacuum shift linkage rod will need to be repositioned so that the pivot point will be on the inside of the
frame rail and directly below the firewall linkage rod. The metric threaded bracket (supplied with the 3 speed kits) will permit you
to bolt the two rods together and then locate the bracket in a neutral position to the two rods. We do not recommend the pivot location
be installed on the engine. This pivot bracket, P/N 716024, is only required on vacuum controlled transfer cases. We have found
that most customers prefer to update their transfer case to the mechanical shift linkage.
3 3 3 & & & 4 4 Speed Speed Mechanical Mechanical Linkages:
Linkages:
The stock Land Cruiser 3 & 4 speed transfer case linkages used a pivot stud that mounted to the stock 3 or 4 speed transmission.
When changing to a new transmission, we offer many brackets that allow the mounting of this pivot stud. Due to the various widths
of conversion transmissions, there may be some modifications necessary to the shifter
linkage to obtain proper shifting. Most of the brackets we manufacture do not allow you to
retain the stock sheet metal gating shift guide.
The mechanical linkages on late model 3 speed and 4 speed transfer cases are all in a
relative location from the front of the transfer case. If you are using an adapter that requires
the relocation of your transfer case, a new hole through the floorboard will be required for
your transfer case linkage. On some transmission retrofits (such as TH400 or 700R), we
have had customers bend the transfer case shift handle to fit back through the original hole
in the floorboard to alleviate this floorboard modification (photo right).
On some engine conversions, we have seen the mechanical shift linkage location end up being directly beneath the passenger
side seat. This is usually caused by the engine location, which is sitting too tight against the firewall. The only remedy is to modify
the shift handle of the transfer case control lever so that it comes forward of the seating area. Before final engine and drivetrain
locations are set, we recommend test fitting your transfer case linkage.
The 1975-80 FJ40 vehicles used a different type of mechanical transfer case linkage than the earlier Land Cruisers. The early
mechanical linkage used a bellcrank system to operate the high/low shift lever. The 1975-80 linkage simplified the shifter by
eliminating the bellcrank and having a rod fasten directly to the High/Low lever, thus making this linkage easier to install and better
suited for the transfer case. Whenever possible, we recommend using this later model designed mechanism for an easier
installation.
In August 1980, the transfer case linkage on the FJ40s and the
newer FJ60 vehicles (equipped with the split-case aluminum transfer
case design) used a pivot pin similar to the 1975-80 four speed
design. Most of our transfer case linkage brackets were not designed
for the split-style transfer case; however, most of our brackets
can be modified to accommodate this linkage. Before installing
the drivetrain back into the vehicle, you should test fit your transfer
case linkage and make the necessary modifications. Make
sure that your linkage properly
shifts into all ratios and
that the installation into the
vehicle permits the transfer case lever to properly engage
and disengage 4WD.
Land Cruisers originally equipped with an automatic were also
equipped with a vacuum actuator for the stock transfer case. This
transfer case should not require any additional linkage.
Split transfer case linkage