Mazda Trucks 1987-1993 Repair Guide

Transmission

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MANUAL TRANSMISSION



On manual transmissions, the identification number is located on a plate attached to the main transmission case. On the plate you find the assigned part number, serial number and bar code used for inventory purposes.

B2200 Pick-up models use the M4M-D 4-speed and M5M-D 5-speed transmissions. They are essentially the same unit geared differently.

B2600 Pick-up and MPV models use the R5M-D (R5MX-D w/ 4x4) 5-speed transmission.

The Navajo uses the M5OD 5-speed transmission.

AUTOMATIC TRANSMISSION



Pick-up Models

In 1987, a 3-speed lock-up torque converter transmission was introduced. Its designation is L3N71B. It was offered only on the B2200. This unit continued on the B2200 through 1988.

Also in 1987 a 4-speed unit was offered as an option on the B2200 and as standard on the B2600. It is designated L4N71B. This unit continues through 1988. In 1989, only the L4N71B was offered on pick-ups. From 1990, the N4A-HL 4-speed is used on all pickups.

The identification number is stamped on a plate that is bolted to the side of the transmission.

The tag identifies when the transmission was built, it's code letter and model number.

MPV Models

See Figure 1



Click image to see an enlarged view

Fig. Fig. 1: Automatic transmission model and number locations-MPV

The MPV uses a 4-speed overdrive transmission called the N4A-HL. This unit is a conventional, hydraulically controlled transmission.

As an option, there is an electronically controlled 4-speed automatic, designated R4A-EL. The transmission is computer controlled and has no owner serviceable or adjustable components other than the neutral start switch.

The identification number is stamped on a plate that is bolted to the side of the transmission.

The tag identifies when the transmission was built, it's code letter and model number.

4-Wheel Drive MPVs use the R4AX-EL, which is essentially the same unit as the R4A-EL.

Navajo Models

The identification number is stamped on a plate that hangs from the lower left extension housing bolt. The tag identifies when the transmission was built, it's code letter and model number.

The Navajo uses a Ford A4LD 4-speed transmission.

 
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