SERVICE MANUAL UPDATE SEC. 7D TRANSFER CASE UNIT REPAIR

SUBJECT: SERVICE MANUAL UPDATE - SECTION 7D TRANSFER CASE UNIT REPAIR (NEW DISASSEMBLY AND ASSEMBLY PROCEDURES)

VEHICLES AFFECTED: 1991 TRACKER

Just prior to 1991 model year start of Production, a friction gear and friction gear retainer were added to the two-wheel and four-wheel drive Tracker manual transmissions. This bulletin amends information found in Transfer Case (Section 7D) of the 1991 Tracker Service Manual (ST377-91).

Figures 2 and 3 of this bulletin replace Figure 2 found on page 7D-3. In addition, the Transfer Case Unit Repair disassembly and assembly procedures have been corrected.

DISASSEMBLY

After the counter shaft gear has been removed from the counter shaft (Step 15 - page 7D-6), the following procedure must be performed:

Remove the friction gear C-clip, friction gear retainer, friction gear spring, friction gear and pin from the counter shaft.

ASSEMBLY

After the drive shaft has been installed into the centre case (Step 26 page 7D-10), the following procedure must be performed:

Install the pin, friction gear, friction gear spring, friction gear retainer and the C-clip to the counter shaft as shown in Figure 1.

General Motors bulletins are intended for use by professional technicians, not a "do-it-yourselfer". They are written to inform those technicians of conditions that may occur on some vehicles, or to provide information that could assist in the proper service of a vehicle. Properly trained technicians have the equipment, tools, safety instructions and know-how to do a job properly and safely. If a condition is described, do not assume that the bulletin applies to your vehicle, or that your vehicle will have that condition. See a General Motors dealer servicing your brand of General Motors vehicle for information on whether your vehicle may benefit from the information.