345 MHPUC Mobile Hydraulic Power Unit Hydraulic System Swing Motor - Test - Measurement of Case Drain Oil Caterpillar


Swing Motor - Test - Measurement of Case Drain Oil
`
345 MHPUC Mobile Hydraulic Power Unit Hydraulic System [KENR7932]

Table 1
Required Tools    
Part Number     Description     Qty    
6V-9832     Cap     1    
    Wrench 35 mm (1.375 inch)     1    
    Container for Measuring     1    


NOTICE

Care must be taken to ensure that fluids are contained during performance of inspection, maintenance, testing, adjusting, and repair of the product. Be prepared to collect the fluid with suitable containers before opening any compartment or disassembling any component containing fluids.

Refer to Special Publication, NENG2500, "Dealer Service Tool Catalog" for tools and supplies suitable to collect and contain fluids on Cat products.

Dispose of all fluids according to local regulations and mandates.


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

  1. Stop the engine.

  1. Release the pressure in the hydraulic system. Refer to Testing and Adjusting, "Hydraulic System Pressure - Release".

  1. Attach 311-1362 Vacuum Cap onto the hydraulic tank. Attach an air supply hose onto the assembly. Apply 276 to 414 kPa (40 to 60 psi). This procedure will pull a vacuum on the hydraulic system.



    Illustration 1g01132475

    Swing motor compartment

    (1) Case drain hose

    (2) Tee

  1. Disconnect the case drain hose (1) from tee (2) . Place the open end of the case drain hose (1) into the container for measuring.

  1. Install 6V-9746 O-Ring Seal and 6V-9832 Cap on tee (2) of the swivel.



    Illustration 2g01132476

    Pilot manifold

    (3) Connector

    (4) Solenoid valve for swing parking brake

  1. Disconnect connector (3) from solenoid valve (4) for the swing parking brake.

  1. Remove 311-1362 Vacuum Cap and install the filler plug for the hydraulic tank.

  1. Start the engine.

  1. Place the engine speed dial at position "10" and AEC switch OFF.

    ReferenceRefer to Testing and Adjusting, "Engine Performance - Test (Engine Speed)" for engine rpm settings.

  1. Increase the hydraulic oil temperature to 55° ± 5°C (131° ± 9°F).

  1. Slowly move the swing joystick and make sure that the swing parking brake is activated.

  1. Move the swing joystick fully for one minute. Measure the case drain oil.

  1. Stop the engine.

  1. Connect connector (3) to the solenoid valve for swing parking brake (4) .

  1. Repeat this test procedure three times in order to obtain three measurements. For each test procedure, swing the upper structure to a different position.

The following values specify the maximum acceptable flow of case drain oil when the swing relief pressure is set at 31400 ± 1000 kPa (4555 ± 145 psi).

New swing motor ... 30 L/min (7.9 US gpm)
Rebuilt swing motor ... 35 L/min (9.2 US gpm)

Information System:

307D, 311D, 312D, 313D, 315D, 318D, 319D, 320D, 323D, 324D, 325D, 326D, 328D, 329D, 330D, 336D, 340D, 345D, 349D, 374D, 390D and M325D Excavators Air Conditioning and Heating Control Panel (Air Conditioner and Heater)
C32 Marine Engines Coolant Level Sensor Circuit - Test
2005/03/07 Wireless Communication Adapter Allows Radio Frequency Communication Between Computer and Electronic Control Module {0785, 0788}
345C Excavator Hydraulic System Main Hydraulic Pump Air - Purge
C11 and C13 Engines for Caterpillar Built Machines Flywheel Housing - Remove and Install
C11 and C13 Engines for Caterpillar Built Machines Crankshaft Rear Seal - Install
307D, 311D, 312D, 313D, 315D, 318D, 319D, 320D, 323D, 324D, 325D, 326D, 328D, 329D, 330D, 336D, 340D, 345D, 349D, 374D, 390D and M325D Excavators Air Conditioning and Heating Troubleshooting Faults With Service Codes
C11 and C13 Engines for Caterpillar Built Machines Flywheel - Install
C11 and C13 Engines for Caterpillar Built Machines Water Temperature Regulator - Remove and Install
C11 and C13 Engines for Caterpillar Built Machines Water Pump - Assemble
325D and 329D Excavators Machine Security System - If Equipped
3500 Engines Coolant Level Sensor - Remove and Install
C11 and C13 Engines for Caterpillar Built Machines Fuel Filter Base - Remove and Install
3508B, 3512B and 3516B Generator Set Engines Accessory Drive (Front) - Remove - Engine Oil Pump and Water Pump
3508B, 3512B and 3516B Generator Set Engines Accessory Drive (Front) - Install - Engine Oil Pump and Water Pump
3508C, 3512C and 3516C Marine Engines Accessory Drive (Front) - Disassemble - Engine Oil Pump and Water Pump
3508C, 3512C and 3516C Marine Engines Accessory Drive (Front) - Assemble - Engine Oil Pump and Water Pump
C32 Marine Engines Digital Sensor Supply Circuit - Test
307D, 311D, 312D, 313D, 315D, 318D, 319D, 320D, 323D, 324D, 325D, 326D, 328D, 329D, 330D, 336D, 340D, 345D, 349D, 374D, 390D and M325D Excavators Air Conditioning and Heating Air Conditioning System Troubleshooting
C32 Marine Engines Electrical Power Supply Circuit - Test
C11 and C13 Engines for Caterpillar Built Machines Cylinder Head - Remove
C11 and C13 Engines for Caterpillar Built Machines Cylinder Head - Install
C11 and C13 Engines for Caterpillar Built Machines Camshaft - Remove
307D, 311D, 312D, 313D, 315D, 318D, 319D, 320D, 323D, 324D, 325D, 326D, 328D, 329D, 330D, 336D, 340D, 345D, 349D, 374D, 390D and M325D Excavators Air Conditioning and Heating Air Conditioning System Troubleshooting