568 Forest Machine Hydraulic System Swing Speed and Swing Drift on a Slope - Check Caterpillar


Swing Speed and Swing Drift on a Slope - Check
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1.1. Introduction
2.1. Required Tools
3.1. Test Procedure - 568 GF
4.2. Swing Speed on a Slope
5.2. Swing Drift on a Slope
6.1. Test Procedure - 568 LL
7.1. Worksheet

Introduction

Measuring the swing speed on a slope will determine if there is a need to check the swing motor and the anti-reaction valve. Measuring the swing drift on a slope will determine if there is a need to check the swing parking brake.

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".

Required Tools

Table 1
Required Tools 
Description  Qty 
Measuring Tape 
Stopwatch 

Test Procedure - 568 GF

Swing Speed on a Slope



Illustration 1g00298078

  1. Complete the following steps in order to measure the swing speed on a slope.

    1. The work tool should be empty.

    2. Position the machine on a slope of 12 degrees. Refer to Illustration 1.

    3. Position the implements at maximum reach and close the work tool. Position the work tool above the ground so that the work tool will not come in contact with any obstacles.


      Illustration 2g00298079

    4. Position the upper structure at position (A). The upper structure should be at a 90 degree angle to the lower structure. Refer to Illustration 2.

    5. Measure the time that is required to swing the upper structure from position (A) to position (B).

    6. Position the upper structure at position (C). The upper structure should be at a 90 degree angle to the lower structure.

    7. Measure the time that is required to swing the upper structure from position (C) to position (B).

Swing Drift on a Slope

  1. Complete the following steps in order to measure the swing drift on a slope.


      Illustration 3g00298079

    1. Position the upper structure at position (A). The upper structure should be at a 90 degree angle to the lower structure. Refer to Illustration 3.


      Illustration 4g00293972
      (A) Upper frame
      (B) Undercarriage frame
      (C) Marking

    2. To indicate the relationship of the two positions, put a mark (C) on the inner race and the outer race of the swing bearing. Refer to Illustration 4.

    3. Stop the engine.

    4. Leave the machine in this position for 3 minutes. Measure the swing drift on the circumference of the swing bearing.

    5. Start the engine.

    6. Position the upper structure at position (C). The upper structure should be at a 90 degree angle to the lower structure. Refer to Illustration 3.

    7. Repeat Steps 1.b through 1.d.

Test Procedure - 568 LL



Illustration 5g01404840

  1. Complete the following steps in order to measure the swing speed on a slope.

    1. The heel should be empty.

    2. Position the machine on a slope of 12 degrees. Refer to Illustration 5.

    3. Position the implements at maximum reach and close the heel. Position the heel above the ground so that the heel will not come in contact with any obstacles.


      Illustration 6g01404841

    4. Position the upper structure at position (A). The upper structure should be at a 90 degree angle to the lower structure. Refer to Illustration 6.

    5. Measure the time that is required to swing the upper structure from position (A) to position (B).

    6. Position the upper structure at position (C). The upper structure should be at a 90 degree angle to the lower structure.

    7. Measure the time that is required to swing the upper structure from position (C) to position (B).

  2. Complete the following steps in order to measure the swing drift on a slope.


      Illustration 7g01404841

    1. Position the upper structure at position (A). The upper structure should be at a 90 degree angle to the lower structure. Refer to Illustration 7.


      Illustration 8g00293972
      (A) Upper frame
      (B) Undercarriage frame
      (C) Marking

    2. To indicate the relationship of the two positions, put a mark (C) on the inner race and the outer race of the swing bearing. Refer to Illustration 8.

    3. Stop the engine.

    4. Leave the machine in this position for 3 minutes. Measure the swing drift on the circumference of the swing bearing.

    5. Start the engine.

    6. Position the upper structure at position (C). The upper structure should be at a 90 degree angle to the lower structure. Refer to Illustration 7.

    7. Repeat Steps 2.b through 2.d.

Worksheet

Table 2
"Swing Speed and Swing Drift on a Slope" 
Date  Machine Serial Number 
Swing Time (seconds) 
Item  568 GF  568 LL  Actual 
Right Swing  5.3 or less  5.3 or less   
Left Swing 
Swing Drift mm (inch) 
Item  568 GF  568 LL  Actual 
Right Swing   
Left Swing 

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