DIVIDER 1807091 - Caterpillar

953, 963, 973 LoadersDuring installation of the pump head on the hydrostatic transmission case for the above loaders, it is very important to rotate (turn) the pump input shafts as the head bolts are tightened. The pump input shafts, bearings, and barrels can drop out of alignment a small amount when the head is removed.
During installation of the head, rotation of the input shafts will bring the bearings into correct alignment in the head. Damage to internal components is possible if this procedure is not followed. If the head on the hydrostatic transmission has been assembled correctly, the serviceman will be able to turn the main input shaft with a 61 cm (2') extension bar or pipe wrench.
Be sure to make a note in the Disassembly and Assembly sections of the Service Manuals for each of the above loaders.