PUMP GP- 0R4211 - Caterpillar

Table 1
Required Tools
Description Qty
Measuring Tape 1
Stopwatch 1
Illustration 1 g00298378
Position the machine on level ground. Refer to Illustration 1.
Load the bucket. Weight of bucket load 315D ... 825 kg (1820 lb)
Raise the boom until the top stick pin is the same height as the boom foot pin.
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.
Measure each cylinder's length from cylinder pin to cylinder pin.
Stop the engine.
Leave the machine in this position for three minutes. Measure each cylinder's length from cylinder pin to cylinder pin for drift.
Table 2
Cylinder Drift (Loaded 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 12.0 mm ( 0.47 inch) or less 18.0 mm ( 0.71 inch) or less 30.0 mm ( 1.18 inch) or less
Bucket Cylinder 18 mm (0.71 inch) or less 27 mm (1.06 inch) or less 45 mm (1.77 inch) or less