349D2 MHPU Mobile Hydraulic Power Unit Hydraulic System Swing Speed and Swing Drift on a Slope - Check Caterpillar


Swing Speed and Swing Drift on a Slope - Check
`
1.1. Specification
2.1. Introduction
3.1. Required Tools
4.1. Test Procedure
5.2. Swing Speed on a Slope
6.2. Swing Drift on a Slope

Specification

Note: Certain machines will default to "Economy Mode" at machine startup. Change to "High Hydraulic Power Mode" before performing the test procedure.

Table 1
"Swing Speed and Swing Drift on a Slope" 
Swing Time (seconds) 
Item  New/Rebuild  Service Limit  Actual 
Right Swing  5.1 or less  6.6 or less   
Left Swing 
Swing Drift mm (inch) 
Item  New  Service Limit  Actual 
Right Swing   
Left Swing 

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 2
Required Tools 
Description  Qty 
Measuring Tape 
Stopwatch 

Test Procedure

Swing Speed on a Slope



Illustration 1g00298078

  1. Complete the following steps 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 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.

Information System:

324D and 325D Forest Machines Machine Systems Track - Connect - PPR2
324D and 325D Forest Machines Machine Systems Track - Separate - PPR2
A New Filter is Available for the DEF Tank Adaptor for C7.1 Engines {108H}
C2.4 Tier 4 Final Engines for Caterpillar Built Machines Crankshaft Front Seal - Remove and Install
Exhaust Gas Valve (NRS) for C4.4 Engines {5137}
A New Diesel Exhaust Fluid Filter is Now Available for C7.1 Engines {108J}
312F and 313F Excavator Machine Systems Pump Control (Output Flow) - Test - Two Pump Calibration
312F and 313F Excavator Machine Systems Pump Control (Output Flow) - Test - One Pump Calibration (Optional Test)
300.9D VPS Mini Hydraulic Excavator Machine Systems Blade Hydraulic System
312F and 313F Excavator Machine Systems Pilot System
PM620, PM622, PM820, PM822 and PM825 Cold Planers Electronic System Sensor Signal (PWM) - Test
Procedure for the Installing the <NOBR>479-2095</NOBR> Migration Kit on 316E and 318E Excavators {1000, 7000}
Installation of the <NOBR>500-9250</NOBR> Coupler Control Ar on Certain Hydraulic Excavators {6129}
349D2 MHPU Mobile Hydraulic Power Unit Hydraulic System Relief Valve (Main) - Test and Adjust
Installation Procedure for the <NOBR>478-3085</NOBR> Front Lines Gp on Certain Hydraulic Excavators {5057}
Installation Procedure for the <NOBR>495-1258</NOBR> Chassis Wiring Gp On Certain Hydraulic Excavators {1408}
Installation of the <NOBR>500-9249</NOBR> Auxiliary Control Ar (Tool Control) on Certain Hydraulic Excavators {1408, 5057, 5059, 7301, 7405, 7557}
Installation Procedure for the <NOBR>416-8400</NOBR> Chassis Wiring Gp On Certain Hydraulic Excavators {1408, 5051}
349D2 MHPU Mobile Hydraulic Power Unit Hydraulic System Relief Valve (Line) - Test and Adjust
Installation of the <NOBR>500-9248</NOBR> Auxiliary Control Ar (Medium Pressure) on Certain Hydraulic Excavators {5057, 5070}
Installation Procedure for the <NOBR>417-2219</NOBR> Pump Lines Gp On Certain Hydraulic Excavators {5057}
349D2 MHPU Mobile Hydraulic Power Unit Hydraulic System Fan Motor Speed (Hydraulic and Radiator Cooling) - Test and Adjust
349D2 MHPU Mobile Hydraulic Power Unit Hydraulic System Main Pump (Flow) - Test - Hydraulic Power
C2.4 Tier 4 Final Engines for Caterpillar Built Machines Idler Gear - Remove and Install