SEAL-D-RING 3751156 - Caterpillar

Adjustment Of The Bearings For The Bevel Gear Shaft
1. Install bevel gear shaft (8) in the machine without bevel gear (3), if the transmission is installed in the machine. Install bevel gear shaft (8) in the machine with the bevel gear (3) if the transmission is not installed.2. Install bearing cage (4) with a full package of shims (9). Tighten bolts (10) without the lockwashers evenly. The thickness of a full shim pack is ... .119 to .125 in.(3.02 to 3.18 mm)3. Install bearing cage (7) without shims (6).4. While slowly turning bevel gear shaft (8), tighten bolts (5), without the lockwashers, evenly until the torque needed to turn the bevel gear shaft is ... 70 to 85 lb. in.(8 to 10 N m)5. Measure the distance between the flange of bearing cage (7) and the face of the bevel gear case with a feeler gauge. Measure the distance at each of the bolts around bearing cage (7). Make sure the distance is the same at each of the bolts.6. Remove bearing cage (7). Install an amount of shims (6) the same thickness as the distance measured in Step 5. Install bearing cage (7) and bolts (5) with the lockwashers. Tighten bolts (5) evenly.7. Install bolts (10) with the lockwashers. Tighten the bolts evenly.8. Check the torque that is needed to turn bevel gear shaft (8) again. The torque must be ... 70 to 85 lb. in.(8 to 10 N m)Adjustment Of The Free Movement (Backlash)
1. Install the transmission or bevel gear (3).2. Install a dial indicator so the indicator tip is on one tooth of bevel pinion (2).3. Put a block of wood between bevel gear (3) and the case so the bevel gear does not turn.4. Move bevel pinion (2) clockwise and then counterclockwise. The free movement (backlash) will be the difference in the values read on the dial indicator.5. Measure the backlash at four points around the bevel gear to find the point of smallest backlash.6. The correct amount of backlash between the bevel gear and pinion is ... .010 + .004 or - .003 in.(0.25 + 0.10 or - 0.08 mm)7. If the measurement of the smallest backlash is too large, remove some of shims (9) from behind bearing cage (4). Install the shims (that were removed) behind bearing cage (7).8. If the measurement of the smallest backlash is too small, remove some of shims (6) from behind bearing cage (7). Install the shims (that were removed) behind bearing cage (4). The adjustment of the bearings for bevel gear shaft (8) will not change by the movement of shims from one bearing cage to the other as long as the total thickness of shims is the same.Adjustment Of Tooth Contact Pattern
1. Put a small amount of Prussian blue, red lead, or paint on the ring gear teeth.2. Turn the pinion (2) counterclockwise and then clockwise. Check the marks