M/T - KM132/KM145 Counter Gear Lock Nut Modification

88mitsubishi01

SUBJECT:
KM132/KM145 M/T COUNTER GEAR LOCK NUT MODIFICATION

NO. TSB-88-21-003

DATE March, 1988 MODEL Truck, Montero, Starion

FIGURE 1:

PURPOSE

This bulletin describes the changes made to the counter gear lock nut, counter shaft gear cluster and KM145 transfer case adaptor of the KM132 and KM145 manual transmissions used in Truck, Montero and Starion vehicles (Figure 1). These changes were made to assure constant torque on the counter gear lock nut.

If you have a vehicle with a lock nut that will not stay tight, replace the counter shaft lock nut, counter shaft gear cluster and transfer case adaptor (KM145 only) with the new components described in this bulletin.

EFFECTIVE PRODUCTION DATE AND TRANSMISSION SERIAL NUMBER

The new counter shaft components have been added to vehicles beginning with the following date and transmission serial number.

Production Date: From September, 1987 T/M Serial Number: From DM9593

PARTS INFORMATION

The part numbers for the following modified components can be found in the current parts microfiche. If a new component is used in a vehicle built before September, 1987, the following components must be replaced as a set.

Counter Shaft Lock Nut
Counter Shaft Gear
Cluster Transfer Case Adaptor (KM145 Only)

FIGURE 2:

DETAILS OF CHANGE

Counter Gear Lock Nut

The dimensions of the counter gear lock nut have been changed as shown in Figure 2 below. Please note that the tightening torque of the lock nut has not changed.

FIGURE 3:

Counter Shaft Gear Cluster

The threaded end of the counter shaft gear cluster has been made longer as shown in Figure 3 below.

FIGURE 4:

Transfer Case Adaptor (KM145 Only)

Because the overall length of the counter shaft has been increased, the shape inside the transfer case adaptor of the KM145 transmission has been changed in order to clear the counter shaft as shown in Figure 4 below.