325D and 329D Excavators Hydraulic System Swing Speed and Swing Drift on a Slope - Check Caterpillar


Swing Speed and Swing Drift on a Slope - Check
`
1.1. Swing Speed (Empty Bucket)
2.1. Swing Drift (Loaded Bucket)

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".

Table 1
Required Tools 
Description  Qty 
Measuring Tape 
Stopwatch 


Illustration 1g00298078

Swing Speed (Empty Bucket)

  1. Empty the bucket.

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

  3. Position the implements at maximum reach and close the bucket. Position the bucket above the ground so that the bucket 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).

    Table 2
    Swing Time (seconds) 
    Item  New  Rebuild  Service Limit 
    Right Swing  5.2 or less  5.7 or less  6.5 or less 
    Left Swing 

Swing Drift (Loaded Bucket)

  1. Load the bucket.

    Weight of bucket load

    Standard Undercarriage ... 1800 kg (3970 lb)
    Long Undercarriage ... 1980 kg (4370 lb)

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

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


    Illustration 3g00298079

  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 3.


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

  5. 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.

  6. Stop the engine.

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

  8. Start the engine.

  9. 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.

  10. Repeat Steps 5 through 7.

    Table 3
    Swing Drift mm (inch) 
    Item  New  Rebuild  Service Limit 
    Right Swing 
    Left Swing 

Information System:

325D and 329D Excavators Hydraulic System Swing Speed and Overswing on Level Ground - Check
325C Excavator Hydraulic System Travel on Level Ground - Test - Optional Test
325D and 329D Excavators Hydraulic System Travel on Level Ground - Test
5130B Excavator Sampling Interval and Location of Sampling Valve
325C Excavator Hydraulic System Engine Performance - Test - Engine Speed
5230B Excavator Machine Systems Control Valve (Swing) - Disassemble
325C Excavator Hydraulic System Operational Checks
325C Excavator Hydraulic System Main Hydraulic Pump Air - Purge
305 CR Mini Hydraulic Excavator Hydraulic Lockout Control
5230B Excavator Machine Systems Control Valve (Swing) - Assemble
M316C, M318C and M322C Excavators and M318C and M322C Material Handlers Lifting Capacities - M318C Excavator with a One-Piece Boom
Installation Instructions for the 174-1508 Electric Motor {5927}
325C Excavator Hydraulic System Cylinder Drift - Check - Loaded Bucket
325D and 329D Excavators Hydraulic System Cylinder Speed - Check
325C Excavator Hydraulic System Specifications
312C Excavator Machine Systems Main Hydraulic Pump - Install
325C Excavator Hydraulic System Relief Valve (Pilot) - Test and Adjust
325C Excavator Hydraulic System Relief Valve (Main) - Test and Adjust
325C Excavator Hydraulic System Relief Valve (Crossover) - Test and Adjust
325C Excavator Specifications
325C Excavator Hydraulic System Relief Valve (Swing) - Test and Adjust
W345B Series II Material Handler Hydraulic System Travel Motor
305.5 Mini Hydraulic Excavator Machine System Specifications Main Control Valve
325C Excavator Hydraulic System Main Pump (Flow) - Test - Constant Horsepower Flow Control