HOUSING- 8N2500 - Caterpillar

Table 1
Required Tools
Description Qty
Measuring Tape 1
Stopwatch 1
Illustration 1 g00298378Position the machine on level ground. Empty the bucket. Refer to Illustration 1.Boom Cylinder Head End, Stick Cylinder Rod End, and Bucket Cylinder Head End
Fully extend the bucket cylinder.
Fully retract the stick cylinder.
Extend the stick cylinder rod 70 mm (2.8 inch) from the fully retracted position.
Illustration 2 g01402004
Raise the boom until the stick to bucket pin is the same height as the boom foot pin. Refer to Illustration 2.
Measure each cylinder's length from cylinder pin to cylinder pin.
Stop the engine.
Leave the machine in this position for five minutes. Measure each cylinder's length from cylinder pin to cylinder pin for drift.
Table 2
Cylinder Drift (Empty Bucket)
Item New Rebuild Service Limit
Boom Cylinder 6.0 mm (0.24 inch) or less 12.0 mm (0.47 inch) or less 24.0 mm (0.94 inch) or less
Stick Cylinder 10.0 mm (0.39 inch) or less 15.0 mm (0.59 inch) or less 25.0 mm (0.98 inch) or less
Bucket Cylinder 10.0 mm (0.39 inch) or less 15.0 mm (0.59 inch) or less 25.0 mm (0.98 inch) or less Stick Cylinder Head End
Start the engine.
Fully extend the bucket cylinder.
Fully extend the stick cylinder.
Retract the stick cylinder rod 60 mm (2.4 inch) from the fully extended position.
Illustration 3 g01401745
Raise the boom until the stick to bucket pin is 600.0 mm (23.6 inch) high from ground level. Refer to Illustration 3.
Measure the stick cylinder's length from cylinder pin to cylinder pin.
Stop the engine.
Leave the machine in this position for five minutes. Measure the stick cylinder's length from cylinder pin to cylinder pin for drift.
Table 3
Cylinder Drift (Empty Bucket)
Item New Rebuild Service Limit
Stick Cylinder 25.0 mm (0.98 inch) or less 30.0 mm (1.18 inch) or less 40.0 mm (1.57 inch) or less Bucket Cylinder Rod End
Start the engine.
Fully retract the bucket cylinder.
Fully retract the stick cylinder.
Illustration 4 g01401747
Raise the boom until the stick to bucket pin is 600.0 mm ( 23.6 inch) high from ground level. Refer to Illustration 4.
Measure the bucket cylinder's length from cylinder pin to cylinder pin.
Stop the engine.
Leave the machine in this position for five minutes. Measure the bucket cylinder's length from cylinder pin to cylinder pin for drift.
Table 4
Cylinder Drift (Empty Bucket)
Item New Rebuild Service Limit
Bucket Cylinder 20.0 mm (0.79 inch) or less 25.0 mm (0.98 inch) or less 35.0 mm (1.38 inch) or less