GM 91173940 Front Half Transfer Case

A reworking of a transfer case is definitely not something that can be done by a layman, as the numerous small parts need to be assembled and reassembled during this process, and the clearances which will need to be changed normally are measured in terms of thousandths of an inch with such tools used as select fit spacers and snap-rings. Although it can be accomplished by a competent person, the overhaul is probably best left to a shop specializing in transmission repair since the time and expense usually exceeds that of a rebuilt transfer case, which may be gotten through a dealer parts department or an auto parts store. First-time transfer case rebuild techniques What any mechanic with the right special tools and with a step-by-step approach that is highly systematic avoiding small things can do. A few of the specialized equipment needed with the overhaul are internal and external snap ring pliers, bearing puller, slide hammer, pin punch set, dial indicator and probably a hydraulic press, and strong workbench, vise or transmitting stand. When disassembling it is also important to ensure that notes are made on the location of each piece during assembly so as to ease the resembly stage. Knowledge of malfunctioning area also helps in the identification of specific issues since the examination and actual replacement of the parts is also easier.