Product Description
Allison LCT1000 Transmission Main Shaft Support
2001-UP Chevy Silverado HD & GMC Sierra HD
Made in the USA by Adapt-A-Case
Prior to final assembly, the T-44587AC is installed at the PTO mount, held in place by two bolts. T-44587AC is used to support the main shaft during assembly, providing preload. Why? Once the rear half is assembled and the extension housing is bolted in place you must roll the transmission back over, bell housing flange up. During this procedure, if not preloaded, the main shaft is able to move. Often this causes the P3 sun gear thrust bearing to fall out of place. At a minimum this creates clearance issues costing the time spent disassembling. IF gone unnoticed, the bearing gets pinched and self destructs on the test run, taking out costly hard parts with it.
Adapt-A-Case Part Number: T-44587AC
