Advance Adapters 50-6600 User Manual

ADVANCE ADAPTERS INC. P/N: 50-6600

P.O. Box 247, 4320 Aerotech Center Way Old Part No: 711066
Paso Robles, CA 93447 PAGE 1 OF 5
Telephone: [phone] Fax: [phone] Page Rev. Date: 08-13-14

FORD T19 4-SPEED TRANS. TO JEEP NP231 T/C

21 SPL. upgrading to a 87-94 27 SPL.

KIT CONSISTS OF:
No. Qty Part No. Description

1. 1 51-7500 ADAPTER CASTING (Ref: 711175)

2. 1 52-7900 27SP T19 OUTPUT SHAFT

3. 1 716202 NP231 INPUT SHAFT

4. 1 716325A NEEDLE BEARING NP231 GEAR

5. 1 716452 SNAP RING/ JEEP

6. 1 716512 GASKET (NP435, T18)

7. 1 716517 GASKET NP208 T/C

8. 1 716760 NP231 INPUT SEAL

9. 4 725029 1/2"-13 x 1-1/4" H.H.C.S.

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: 50-6600

P.O. Box 247, 4320 Aerotech Center Way Old Part No: 711066
Paso Robles, CA 93447 PAGE 2 OF 5
Telephone: [phone] Fax: [phone] Page Rev. Date: 10-03-00

FORD T19 4-SPEED TRANS. TO JEEP NP231 T/C

21 SPL. upgrading to a 87-94 27 SPL.

WARNER T19 4 SPEED 1966 & UP:

The T18 & T19 transmission can be identified by a case length of 11-7/8", a case casting number of T18 or 13-01, and
T19 or 13-09. The shift cover has a casting number of 13-01 or 13-09. The P.T.O. opening is on the right hand side towards
the front of the case, and the shift cover is mounted to the top of the case with six bolts. The new shaft furnished with
this kit must be carefully compared to the original shaft removed from your transmission. T18 and T19 transmissions
required for this kit are from Ford 1/2, 3/4 and 1 ton trucks. The front bolt pattern on these Ford transmissions will have
an 8-1/2" x 6-1/4" bellhousing pattern with a bellhousing pilot diameter of 4.848".

Before the main shaft is installed, please verify that you have received the correct mainshaft. The splines on the end of the
mainshaft must have 27 splines. When assembling the gears onto the new main shaft, make sure that all gears have the proper
end clearance required for oiling. Make sure that all transmission assembly work is done by a qualified technician. All
surfaces must use gaskets to prevent oil leakage. Warner gear has used two different shaft designs for the spacer between
second and third gear. Some transmissions will use a snap ring and thrust washer, while others will use a built in shoulder.
Both shafts are interchangeable.

When bolting the adapter to the main transmission case, you must use the four studs provided in the kit. A slight modification
may be necessary to obtain the proper clearance around the lower bearing cover of the stock transmission. The new seal
provided with the adapter kit must be installed with the open side towards the transfer case.

If you are replacing a transmission with a flush output shaft stickout, you will be required to remove .436 from the new
mainshaft as shown on Page 3. The adapter housing 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 the number listed above.

The skid plate will need to be slightly modified to fit under the new transmission. Two new holes may be necessary for
use with the new adapter and a slight notch may be required on the front leading edge of the skid plate for clearance around
the front drive shaft.

When this transmission is going to be used with an AMC 6 cylinder or V8 engine, you must use Jeep bellhousing No. 8133951
and Advance Adapters pilot bushing No. 716156. The clutch disc should be changed to an 10-1/2" Centerforce No. 280490

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: 50-6600

P.O. Box 247, 4320 Aerotech Center Way Old Part No: 711066
Paso Robles, CA 93447 PAGE 3 OF 5
Telephone: [phone] Fax: [phone] Page Rev. Date: 10-03-00

FORD T19 4-SPEED TRANS. TO JEEP NP231 T/C

21 SPL. upgrading to a 87-94 27 SPL.

INSTRUCTIONS for NP 231 input gear:

This new input gear will only fit the NP231 transfer cases. The installation of the gear will require the complete
disassembly of your NP231 transfer case. Since the transfer case has to be completely disassembled, this is also a
good time to install a short output shaft kit (fixed yoke kit) if you already have not done so.

If you've never disassembled a New Process transfer case, here are a couple of points to keep in mind that will make
the installation much easier:

1. Keep all bolts, nuts, washers, etc. separated into groups as you remove them. Make sure you keep them in a
labeled container that indicates what part of the transfer case they came from.

2. Keep all small parts in separate containers and label as to location and origin.

3. Make sure you have plenty of time and have a clean, spacious area to perform the installation.

Remove the front yoke nut with a 1-1/8" socket using an impact wrench. Remove the rear case bolts. A 10mm 12 pt. socket is needed for
the spline head bolt and a 15mm socket for the remaining bolts. NOTE: The two black oxide
finished bolts are located at the case dowel positions and require a washer under them. Start to
remove the rear case from the front case by inserting pry bars at the cast-in locations ONLY! Pry
apart evenly to break the sealer bead along the case mating surfaces. The front output shaft and
chain should be retained with the rear portion of the case.

On the front side of the transfer case, you'll need to
remove the 4 bolts that retain the aluminum bearing
retainer. Once this is removed, you'll find a snap ring that
retains the input gear to the cases' input bearing. This snap
ring must be removed so that the input gear can be
removed from the inside.

On the inside of the transfer case, you'll now be able to remove the planetary assembly. Set the assembly on a work bench and locate the
snap ring that retains the input gear into the planetary housing. Remove the snap ring and lift the input gear out of the planetary housing.

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: 50-6600

P.O. Box 247, 4320 Aerotech Center Way Old Part No: 711066
Paso Robles, CA 93447 PAGE 4 OF 5
Telephone: [phone] Fax: [phone] Page Rev. Date: 08-13-14

FORD T19 4-SPEED TRANS. TO JEEP NP231 T/C

21 SPL. upgrading to a 87-94 27 SPL.

Once the input gear is removed, you'll find a thrust washer that must be reinstalled onto the
new 23 spline input. When comparing the two input gears, they should look the same except
for the internal splines. If you find a difference between the two. The NP231 transfer case
used two styles of front input bearings. The early transfer case used a wide bearing and
the later model used a narrow bearing. This new input gear is designed for only the early
style case. New Process changed the bearing and gear pitch design in 1995. The center
photo below show a later model input compared to a early.

Once you have verified that you have the same style input gear, install the gear into the planetary, install the snap ring. Re-install the planetary
assembly into the case and secure the input to the bearing with the front snap ring. Note: The only part you should have left out of the case
is the old input gear. During reassembly, make sure the oil return hole matches the front retainer hole.

NOTE: This kit will not work

with a Tera low 4:1 NP231 kit.

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: 50-6600

P.O. Box 247, 4320 Aerotech Center Way Old Part No: 711066
Paso Robles, CA 93447 PAGE 5 OF 5
Telephone: [phone] Fax: [phone] Page Rev. Date: 08-13-14

FORD T19 4-SPEED TRANS. TO JEEP NP231 T/C

21 SPL. upgrading to a 87-94 27 SPL.

51-7500

DAPTERS

DVANCE

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.