Advance Adapters 50-0408 - Manual (Page 2)

ADVANCE ADAPTERS INC. P/N: 50-0408
P.O. Box 247, 4320 Aerotech Center Way New Item: (08/97)
Paso Robles, CA 93447 PAGE 2 OF 4
Telephone: (800) 350-2223 Fax: (805) 238-4201 Page Rev. Date: 11-13-11
SPECIAL NOTE: The components packaged in this kit have been assembled and machined for specific type of conversions. Modifications to any of the components will
void any possible warranty or return privileges. If you do not fully understand modifications or changes that will be required to complete your conversion, we strongly recommend
that you contact our sales department for more information. This instruction sheet is only to be used for the assembly of Advance Adapter components. We recommend that
a service manual pertaining to your vehicle be obtained for specific torque values, wiring diagrams and other related equipment. These manuals are normally available at
automotive dealerships and parts stores.
INSTALLATION INSTRUCTIONS
This kit is for the GM 4L60 4 speed automatics to all Toyota Land Cruiser split-type transfer cases. The design of this
kit utilizes two shafts. The first shaft is your 4L60 output shaft that is cutoff to the length illustrated on page 3. With
the shaft cut to the proper length, the new Advance Adapter spud shaft can now be put into position. The new spud
shaft should be pressed into the new rear bearing so the external snap ring is towards the threaded end of the shaft. With
the bearing on the spud shaft, you can now install the assembly into the back portion of the adapter. The external snap
ring will lock the spud shaft into position. A special heat-treated gear spacer has been provided for determining the exact
gear location. Before installing the spacer on the spud shaft, we recommend applying some RTV silicone on the spline
portion of the spud shaft that this spacer covers. This will prevent any fluid transfer between the two gear boxes. The
threaded portion on the end of the spud shaft will be identical to the 4 speed transmission being replaced. The original
gears, bearing, washer and nut will all be reused onto the new spud shaft.
The stock transfer case lock nut is Toyota
P/N 90179-26004 . The transfer case indexes to the adapter off the new rear bearing and we also use the lower dowel
pin on the transfer case. The upper dowel pin is not used and our casting hole has been over sized to fit over the stock
dowel pin location. The bearing give the proper indexing and the lower dowel provides the proper rotation.
On the right side of the adapter, you will be able to mount the special shift bracket illustrated on page 4. This bracket
should position your shifter in the original floor board location. On FJ60 vehicles that are installing the Chevy V8 engine
using the 4L60 transmission, you should be able to leave the transfer case in its original position. The bottom of the transfer
case adapter has a support mount that is identical to the support that was previously used on the bottom of the 4 speed
transmission. The original crossmember support will need to be repositioned directly beneath the new transfer case
adapter housing.
GM 4L60 4 SPEED AUTOMATIC:
When installing the new transfer case adapter, make sure that the coupler and the output shaft do not bottom out. We
have found on occasion that a transmission output shaft may be slightly longer than we have allowed for and when coupling
into our new spud shaft, we find a small amount of interference. The adapter housing and spud shaft must be assembled
to the back of the transmission without interference.
DO NOT FORCE THE NEW TAILHOUSING ONTO THE
TRANSMISSION. If assistance is needed, please feel free to call us toll free number at 1-800-350-2223.
When assembling the adapter housing to the transmission case, we have provided you with a new square type "O"-ring
seal to prevent fluid leakage. This seal is a stock GM item that is used on all 4L60 installations. On most installations,
a slight pan modification may be required for clearance of the front Universal yoke.
The Advance Adapter casting has been drilled for your new sensor. The sensor should be installed and the gap between
the sensor and the ring should be .010" to .012" air gap.
CROSSMEMBER NOTE:
This casting is designed around the FJ60 manual transmission crossmember mount. On some manual applications and
all automatic stock transmissions, you may need to purchase Toyota #12371-61020. This part is the new Toyota rubber
mount.
GM 4L60E AUTOMATIC OVERDRIVE
TO LAND CRUISERS 1980-89 FJ60 (4 SPEED)