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ADVANCE ADAPTERS INC. P/N: 50-5905D

P.O. Box 247, 4320 Aerotech Center Way

Paso Robles, CA 93447 PAGE 1 OF 9

Telephone: (800) 350-2223 Fax: (805) 238-4201 Page Rev. Date: 08-10-09

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.

KIT CONSISTS OF:

No. Qty Part No. Description

1. 1 51-5909 TX2 ADAPTER CASTING

2. 1 52-5909 DOUBLE BEARING COUPLER

3. 11 716065 10mm X 1.25" X 48mm SPECIAL STUD

4. 1 716182 THRUST BUSHING

5. 1 716182A SPACER

6. 1 716182B 1/4" BALL

7. 1 716186 SPEED-O BUSHING

8. 2 716308 ROLLER BEARING

9. 1 716323 NEEDLE BEARING FOR CLUSTER GEAR

10. 1 716456 SNAP RING (T/A #N5000-334)

11. 1 716463 SNAP RING

12. 1 716563 GASKET

13. 1 716564 GASKET

14. 11 720012 10mm X 1.25" NUT

15. 11 720015 10mm FLATWASHERS

16. 11 720038 10mm LOCKWASHERS

17. 1 911069 KEY STOCK

18. 1 TT001 TOYOTA TRUCK INSTRUCTION MANUAL

OPTIONAL ITEM:

We now offer a custom 12" speedometer

extension for the crawler boxes. This

extension comes with both size drive

cogs to fit your stock or replacement

transfer case P/N 716186-C.

TX2 CRAWLER ADAPTER

TOYOTA 4WD TRUCKS 21T INPUT

NOTE:

On 1979/80 transfer cases, the input shaft

was odd because it did not have a standard

spline relief as did all other Toyota 21 spline

gear-driven transfer cases. On these trans-

fer cases, some grinding is required on the

input shaft for proper fit on this kit.

Suggested Tools

Ratchet with a 12MM, 14MM, & 30MM sockets

Needle nose pliers

Snap ring pliers

6MM allen wrenches

Hammer

3/16" punch

Straight screw driver

Cresent wrench

Loctile

Assembly lube

PREPARATION OF THE GEAR BOX

Disassemble the extra transfer case gear box using the instruction on the following pages.

Summary of content (9 pages)

PAGE 1
ADVANCE ADAPTERS INC. P/N: 50-5905D P.O. Box 247, 4320 Aerotech Center Way Paso Robles, CA 93447 Telephone: (800) 350-2223 Fax: (805) 238-4201 PAGE 1 OF 9 Page Rev. Date: 08-10-09 TX2 CRAWLER ADAPTER TOYOTA 4WD TRUCKS 21T INPUT KIT CONSISTS OF: OPTIONAL ITEM: We now offer a custom 12" speedometer extension for the crawler boxes. This extension comes with both size drive cogs to fit your stock or replacement transfer case P/N 716186-C. No. Qty Part No. Description 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11.
PAGE 2
ADVANCE ADAPTERS INC. P/N: 50-5905D P.O. Box 247, 4320 Aerotech Center Way Paso Robles, CA 93447 Telephone: (800) 350-2223 Fax: (805) 238-4201 PAGE 2 OF 9 Page Rev. Date: 08-10-09 TX2 CRAWLER ADAPTER TOYOTA 4WD TRUCKS 21T INPUT DISASSEMBLY PROCEDURES The Advance Adapters TX2 crawler kit is ideal for the avid Toyota Truck rock crawler. The installation of the TX2 requires you to almost completely disassemble the donor transfer case.
PAGE 3
ADVANCE ADAPTERS INC. P/N: 50-5905D P.O. Box 247, 4320 Aerotech Center Way Paso Robles, CA 93447 Telephone: (800) 350-2223 Fax: (805) 238-4201 PAGE 3 OF 9 Page Rev. Date: 08-10-09 TX2 CRAWLER ADAPTER TOYOTA 4WD TRUCKS 21T INPUT (5) Remove outer bearing C-clip by reaching inside case and pushing up on gear, while lightly tapping on the case with a plastic soft blow mallet. (8) Using a 3/16" (4mm) punch, drive the roll pin out that holds the front wheel drive shift fork.
PAGE 4
ADVANCE ADAPTERS INC. P/N: 50-5905D P.O. Box 247, 4320 Aerotech Center Way Paso Robles, CA 93447 Telephone: (800) 350-2223 Fax: (805) 238-4201 PAGE 4 OF 9 Page Rev. Date: 08-10-09 TX2 CRAWLER ADAPTER TOYOTA 4WD TRUCKS 21T INPUT (14) Drive the roll pin out that retains the high/low shift fork using a 3/16" (4mm) punch. Occasionally the pin will fall into the case. Don't worry. You will be able to retrieve the pin later. On 1979-83 and 1985-88 fuel injected model transfer cases, DO NOT REMOVE roll pin.
PAGE 5
ADVANCE ADAPTERS INC. P/N: 50-5905D P.O. Box 247, 4320 Aerotech Center Way Paso Robles, CA 93447 Telephone: (800) 350-2223 Fax: (805) 238-4201 PAGE 5 OF 9 Page Rev. Date: 08-10-09 TX2 CRAWLER ADAPTER TOYOTA 4WD TRUCKS 21T INPUT (17) Remove the interlock pin from the shifter detent chamber, if you haven't already done so in Step 15. (20) Remove the low range gear by removing the snap ring that retains the roller bearing onto the rear shaft. Press the roller bearing off of the shaft.
PAGE 6
ADVANCE ADAPTERS INC. P/N: 50-5905D P.O. Box 247, 4320 Aerotech Center Way Paso Robles, CA 93447 Telephone: (800) 350-2223 Fax: (805) 238-4201 Old Part No: MC03 PAGE 6 OF 9 Page Rev. Date: 08-10-09 TX2 CRAWLER ADAPTER TOYOTA 4WD TRUCKS 21T INPUT The low gear and needle bearing must then be installed onto the new shaft supplied. The new thrust bushing and 1/4" ball will need to be placed on top of the output gear as illustrated.
PAGE 7
ADVANCE ADAPTERS INC. P/N: 50-5905D P.O. Box 247, 4320 Aerotech Center Way Paso Robles, CA 93447 Telephone: (800) 350-2223 Fax: (805) 238-4201 Old Part No: MC03 PAGE 7 OF 9 Page Rev. Date: 08-10-09 TX2 CRAWLER ADAPTER TOYOTA 4WD TRUCKS 21T INPUT INSTALLATION OF THE GEAR BOX When installing the additional reduction gear box into your Toyota truck, you will need to make sure that the truck is properly secured for transfer case removal.
PAGE 8
ADVANCE ADAPTERS INC. P/N: 50-5905D P.O. Box 247, 4320 Aerotech Center Way Paso Robles, CA 93447 Telephone: (800) 350-2223 Fax: (805) 238-4201 Old Part No: MC03 PAGE 8 OF 9 Page Rev. Date: 06-19-06 TX2 CRAWLER ADAPTER TOYOTA 4WD TRUCKS 21T INPUT 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.
PAGE 9
ADVANCE ADAPTERS INC. P/N: 50-5905D P.O. Box 247, 4320 Aerotech Center Way Paso Robles, CA 93447 Telephone: (800) 350-2223 Fax: (805) 238-4201 Old Part No: MC03 PAGE 9 OF 9 Page Rev. Date: 06-19-06 TX2 CRAWLER ADAPTER TOYOTA 4WD TRUCKS 21T INPUT P/N 50-5905 21 spline (4 cyl.) P/N 50-5906 23 spline (4 cyl.