"Swing Motor - Test (Measurement of Case Drain Oil)" | ||
---|---|---|
Date | Machine Serial Number | |
Machine Settings | Swing Relief Pressure | Engine Speed |
|
Engine speed dial "10"
AEC Switch OFF |
|
Item | Specification(1) | Actual |
New Swing Motor | |
1. |
2. | ||
3. | ||
Rebuilt Swing Motor | |
1. |
2. | ||
3. |
(1) | Maximum acceptable flow |
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Illustration 1 | g01623868 |
Tooling group "B" 198-4240 Digital Pressure Indicator Gp |
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Illustration 2 | g02709177 |
Tooling group (D) |
Required Tools | ||||
---|---|---|---|---|
Tool | Item | Part
Number |
Description | Qty |
B | 198-4240 | Digital Pressure Indicator Gp | ||
B1 | 198-4234 | Indicator | 1 | |
B2 | 198-4239 | Pressure Sensor
|
1 | |
B3 | 198-4236 | Extension Cable | 1 | |
D | D1 | 6V-7788 | Flow Meter
|
1 |
D2 | 8C-6874 | Reducer | 1 | |
D3 | 6V-9746 | O-Ring Seal | 1 | |
D4 | 124-1901 | Permanent Coupling | 1 | |
D5 | 122-6870 | Bulk Hydraulic Hose | 3 ft | |
D6 | 124-2147 | Permanent Coupling | 1 | |
D7 | 6V-8942 | O-Ring Reducer | 1 | |
D8 | 6V-8556 | Nut | 1 | |
D9 | 6V-8398 | O-Ring Seal | 1 | |
F | 311-1362 | Vacuum Cap | 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. |
- Stop the engine.
- Release the pressure in the hydraulic system. Refer to Testing and Adjusting, "Hydraulic System Pressure - Release".
- Attach 311-1362 Vacuum Cap onto the hydraulic tank. Attach an air supply hose onto the assembly. Apply
276 kPa to 414 kPa (40 psi to 60 psi) . This procedure will pull a vacuum on the hydraulic system.Show/hide tableIllustration 3 g02788993 Swing Motor Compartment
(1) Case drain hose
(2) Adapter - Disconnect case drain hose (1) from adapter (2).
Show/hide table
Illustration 4 g02352913 Flow Meter Tool Layout
Tooling D
(1) Case drain hose
(2) Adapter
(3) Swing motor
(4) Swivel - Connect the flow meter assembly (D) between adapter (2) and case drain hose (1). Refer to Illustration 4.
Note: Correct orientation of the flow meter is necessary. The oil flows from swing motor (3) to swivel (4).
Show/hide tableIllustration 5 g02072074 Pilot manifold
(5) Solenoid valve for swing parking brake
(6) Connector - Disconnect connector (6) from the solenoid valve for swing parking brake (5).
- Remove 311-1362 Vacuum Cap and install the filler plug for the hydraulic tank.
- Start the engine.
- Place the engine speed dial at position "10" and AEC switch OFF.
Reference: Refer to Testing and Adjusting, "Engine Performance - Test (Engine Speed)" for engine rpm settings.
- Increase the hydraulic oil temperature to
55° ± 5°C (131° ± 9°F) . - Slowly move the swing joystick and make sure that the swing parking brake is activated.
- Move the swing joystick fully for 1 minute. Measure the case drain oil.
- Stop the engine.
- Connect connector (6) to the solenoid valve for swing parking brake (5).
- Repeat this test procedure three times 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
- New swing motor ...
30 L/min (7.9 US gpm) - Rebuilt swing motor ...
35 L/min (9.2 US gpm) - Rebuilt swing motor ...