BASE 2367327 - Caterpillar

Specification
Table 1
"Cylinder Drift - Check (Loaded Bucket)"
Item New Service Limit Actual
Boom Cylinder 4.5 mm (0.18 inch) or less 11 mm (0.43 inch) or less
Stick Cylinder 12.0 mm (0.47 inch) or less 30.0 mm (1.18 inch) or less
Bucket Cylinder 18 mm (0.71 inch) or less 45 mm (1.77 inch) or less Introduction
The performance level of the cylinder, the cylinder seals, and the overload relief valves for the implements can be determined with the following procedure.Note: The machine configuration that is used during this test can affect the results of this test. Refer to Testing and Adjusting, "Operational Checks" for the machine configurations that were used for this test.Note: The relief valve pressure settings must be set to the relief valve pressure specification before performing this operational check. Refer to Testing and Adjusting, "Specifications".Required Tools
Table 2
Description Qty
Measuring Tape 1
Stopwatch 1 Test Procedure
Illustration 1 g03587306
Position the machine on level ground. Refer to Illustration 1.
Load the bucket.
Raise the boom until the stick to bucket 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 length from cylinder pin to cylinder pin.
Stop the engine.
Leave the machine in this position for 3 minutes. Measure each cylinder length from cylinder pin to cylinder pin for drift.