558 Forest Machine Machine Systems Caterpillar

Cylinder Drift - Check - Empty Bucket

Usage:

558 F5G

Specification

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Table 1
"Cylinder Drift - Check (Empty Bucket)"
Item	Cylinder Position	558 LL	Actual
Boom Cylinder	Extended	4.5 mm (0.18 inch) or less
Stick Cylinder	Retracted	-
Stick Cylinder	Extended	25 mm (0.98 inch) or less
Heel Cylinder	Extended	10 mm (0.39 inch) or less
Heel Cylinder	Retracted	20 mm (0.79 inch) or less

Introduction

The performance level of the cylinder and the cylinder seals for the implements can be determined with the following procedure.

Note: The engine speed and/or the machine configuration that is used during this test can affect the results of this test. Refer to Testing and Adjusting, "Engine Performance - Test (Engine Speed)" for the engine speed that was used for 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".

Note: Work tools must be removed for this test.

Required Tools

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Table 2
Description	Qty
Measuring Tape	1
Stopwatch	1

Test Procedure

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Illustration 1	g01803815

Boom Cylinder Head End, Stick Cylinder Rod End, and Heel Cylinder Head End

Position the machine on level ground. Empty the heel. Refer to Illustration 1.
Fully extend the heel cylinder.
Fully retract the stick cylinder.
Extend the stick cylinder rod 70 mm (2.8 inch) from the fully retracted position.
Raise the boom until the stick to heel pin is the same height as the boom foot pin. Refer to Illustration 1.
Measure each cylinder length from cylinder pin to cylinder pin.
Stop the engine.
Leave the machine in this position for 5 minutes. Measure each cylinder length from cylinder pin to cylinder pin for drift.

Stick Cylinder Head End

Start the engine.
Fully extend the heel cylinder.
Fully extend the stick cylinder.
Retract the stick cylinder rod 60 mm (2.4 inch) from the fully extended position.
Raise the boom until the stick to heel pin is 600 mm (23.6 inch) high from ground level.
Measure the stick cylinder length from cylinder pin to cylinder pin.
Stop the engine.
Leave the machine in this position for 5 minutes. Measure the stick cylinder length from cylinder pin to cylinder pin for drift.

Heel Cylinder Rod End

Start the engine.
Fully retract the heel cylinder.
Fully retract the stick cylinder.
Raise the boom until the stick to heel pin is 600 mm (23.6 inch) high from ground level.
Measure the heel cylinder length from cylinder pin to cylinder pin.
Stop the engine.
Leave the machine in this position for 5 minutes. Measure the heel cylinder length from cylinder pin to cylinder pin for drift.