CABLE 9X6278 - Caterpillar

Hydraulic oil pressure can remain in the hydraulic system on this machine after the engine and pump have been stopped. Serious injury can result if this pressure is not released before any service is done on the hydraulic systems. In order to prevent possible injury, release the hydraulic system pressure before working on any fitting, hose, or hydraulic component.Lower all attachments to the ground before service is started. If the hydraulic system must be serviced, tested, or adjusted with the attachment in the raised position, the attachments and lift cylinders must be supported properly.Always move the machine to a location away from the travel of other machines. Be sure that other personnel are not near the machine when the engine is running and tests or adjustments are being made.
Care must be taken to ensure that fluids are contained during performance of inspection, maintenance, testing, adjusting, and repair of the machine. Be prepared to collect the fluid with suitable containers before opening any compartment or disassembling any component containing fluids.Dispose of all fluids according to local regulations and mandates.
Introduction
The following test will determine whether the pressure of the flywheel lubrication oil is within the specified limits. This oil is delivered to the torque divider from the priority valve. This oil is then distributed to the flywheel.Required Tools
Illustration 1 g01089423
Tooling (A)
Illustration 2 g01089425
Tooling (B) ( 6V-7830 Pressure Gauge (Tetragauge))
Table 1
Required Tools    
Tooling    Item    Part
Number    Description    Qty    
A     A1     8T-0854     Pressure Gauge
1000 kPa (145 psi)     1    
A2 6V-3989     Fitting     1    
A3 6V-4143     Coupler     2    
A4 177-7861     Hose As
41370 kPa (6000 psi)     1    
B     B1     8T-0862     Pressure Gauge
500 kPa (72 psi)     1    
B2 8T-0860     Pressure Gauge
40000 kPa (5800 psi)     1    
B3 8T-0855     Pressure Gauge
4000 kPa (580 psi)     1    
B4 6V-3081     Hose As
41500 kPa (6020 psi)     1    
B5 4S-6399     Connector     1    
B6 6V-4144     Coupler     1    Test Procedure
Move the machine to a smooth horizontal location.
Fully retract the counterweight.
Illustration 3 g01219079
(43) Pressure Tap for Flywheel Lubrication Pressure ("L2") (44) Pressure Tap for Torque Converter Inlet Relief Valve ("M") (45) Pressure Tap for Torque Converter Outlet Relief Valve ("N")
Attach tooling (A or B) to pressure tap (43) ("L2").
Start the engine. Warm the hydraulic oil to a minimum temperature of 84° 8°C (183° 14°F).
Operate the engine at HIGH IDLE. Make sure that the steering control lever is in the NEUTRAL position.
Check the pressure at tooling (A or B) . The pressure at tooling (A or B) should be 220 85 kPa (32 12 psi).
Operate the engine at LOW IDLE (700 rpm). Make sure that the steering control lever is in the NEUTRAL position.
Check the pressure at tooling (A or B) . The pressure at tooling (A or B) should be 105 35 kPa (15