B.V. T4/5

GENERAL

The T4 four-speed and T5 five-speed transmissions are used with AMC/Jeep vehicles that are equipped with either a four-cylinder or six- cylinder engine.

These transmissions provide synchromesh engagement in all forward gear positions. Reverse gear is not synchronized. All forward gears are helical cut and are in constant mesh.

Both transmissions are designed and manufactured with metric dimensions. Therefore, when repairing these transmissions, use only the specified metric dimensioned fasteners.

The transmission case, cover and adapter housing for both transmissions are cast aluminum. An internal, single-rail shift mechanism is located in the cover.

Transmission Identification

Both transmissions have an identification tag attached at the rear of the transmission case that provides the AMC/Jeep and vendor part numbers. This information is essential when ordering replacement parts. If the tag is removed during service operations, ensure that it is securely attached to the transmission case at the original location after completion of the service operations.

Special Identification

Vehicles manufactured for sale in the states of Georgia and Tennessee have certain components identified by a nonrepeating number. For both transmissions, the number is stamped on a boss located on the left side of the transmission case.

The number used for Canadian manufactured vehicles is the body sequence number preceded by a C (for Canada) and followed by 83 or 84 to identify the year of manufacture. The sequence number begins and ends with an asterisk (*) to prevent alteration by extension.

Gearshiff Patterns

The gearshift pattern for the four forward gears of four-speed transmissions is an H configuration. An additional position for reverse gear is included as well as a separate position for the fifth gear with five-speed transmissions. An interlock mechanism prevents accidental engagement of reverse gear when shifting from any of the forward gears.

To shift to reverse gear for both T4 and T5 transmissions, press the gearshift lever to the extreme right and rearward. To shift from reverse gear, move the gearshift lever back to the neutral detent position.

Lubrication

The specified lubricant for both T4 and T5 transmissions is AMC/Jeep/Renault Manual Transmission Fluid (P/N 8983 000 000). Do not use any other type of fluid when adding to or refilling a transmission.





Capacities:

T4: 1.7 liters (3.5 U.S. pints)
T5: 1.9 liters (4.0 U.S. pints)

CAUTION: Do not use any gear lubricants containing lead, sulphur, or chlorine compounds. These chemicals are not compatible with the lubrication requirements for AMC/Jeep manual transmissions.