Advance Adapters 50-9920 User Manual

ADVANCE ADAPTERS INC. P/N: 50-9920

P.O. Box 247, 4320 Aerotech Center Way New Item: (4/95)
Paso Robles, CA 93447 PAGE 1 OF 2
Telephone: [phone] Fax: [phone] Page Rev. Date: 09-23-10

STOCK JEEP TRANSMISSION

TO BRONCO DANA 20

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NOTE

:

NOTENOTE

KIT CONSISTS OF:

No. Qty Part No. Description

1. 1 51-9920 SPECIAL DANA 20 ADAPTER PLATE

2. 1 52-0209 SPECIAL SPUD SHAFT 23T INTERNAL

3. 2 715523-SP SHIFTER BRKT SPACERS

4. 1 715544 SHIFTER LINKAGE BRACKET

5. 1 715544B PIVOT BOLT FOR T STYLE HANDLE

6. 1 716223 BEARING RETAINER

7. 1 716312 BALL BEARING

8. 1 716455 SNAP RING

9. 1 716513 GASKET

10. 1 716517 GASKET

11. 1 716713 SEAL (C/R 18676)

12. 1 716714 "O" RING

13. 6 723704 3/8" LOCK WASHERS

14. 4 723722 3/8"-16 x 1-1/4" LONG H.H.C.S.

15. 2 723724 3/8"-16 x 1-3/4" LONG H.H.C.S (SHIFTER BRKT BOLTS)

16. 6 723729 3/8"-16 x 1-3/4" LONG S.H.C.S.

17. 1 726207 FLAT WASHER PIVOT BOLT

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This adapter will only work with the "T"
style shifter. If your vehicle has a "J"
style, it will need to be replaced

INSTRUCTIONS:

The overall length of this transmission with the adapter is 25.150". This transmission adapter can be used with both V8
and 6 cylinder engine installations.

The new casting bolts to the Dana 20 and could be rotated in several options since the bolt pattern is symmetrical, however;
the NV3550 pattern is not so the casting must be orientated correctly to the Dana 20 in order to bolt correctly to the NV3550
transmission. We have put a small drill mark on the casting surface to indicate the top of the casting and this should be
bolted to the transfer case with this mark closest to the floorboard of the vehicle.

This kit is supplied with a new spud shaft, bearing, and seal. These components will need to be installed into our alignment
retainer, along with the stock Bronco Dana drive gear. Make sure all snap rings are in place. Install the O-ring on the
retainer along with a small amount R.T.V. Blue silicone, then install the retainer to your transfer case. Bolt the adapter
ring to the Dana 20 using the 6 S.H.C.S. bolts. Rotate the spud shaft to check for proper installation.

When assembling the transmission to the transfer case, DO NOT FORCE the two gear boxes together. If the shaft is
too long, there is the possibility of pre-loading the transmission bearings, causing premature failure. Take extra time to
make sure that the shafts do not bottom out internally. If there is any interference problem, it may be necessary to grind
the end of the new output shaft to obtain the proper length.

A shifter bracket has been provided for a "T" style T/C shifter handle. Before installing your transmission and transfer
case assembly in your vehicle, check the fit of this linkage and bracket. The transfer case shifter handle and the NV3550
shifter handle may be too close together on some applications. The NV3550 handle may require a small bend to clear the
transfer case shifter handle.

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.

ADVANCE ADAPTERS INC. P/N: 50-9920

P.O. Box 247, 4320 Aerotech Center Way New Item: (4/95)
Paso Robles, CA 93447 PAGE 2 OF 2
Telephone: [phone] Fax: [phone] Page Rev. Date: 07-05-05

STOCK JEEP TRANSMISSION

TO BRONCO DANA 20

Chrysler used an oil weep hole on the stock adapter housing. This weep hole was located in one of two locations: on
the adapter surface where the transfer case mates to the adapter or on the bottom center of the casting near the
crossmember foot. These weep holes were designed for the purpose of informing you when the seal in the tailhousing
would fail. The adapter kit spud shaft does not always contact the seal in the Jeep tailhousings. To prevent oil leaking
problems when the spud shaft does not contact the seal surface, we recommend plugging the weep hole using RTV Blue
silicone (if on the adapter housing face), or RTV Blue silicone and a sheet metal screw (when located near the crossmember
foot).

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.