HINGE GP-TRANSPORT 2094352 - 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.
Specifications
Table 1
D8T Test for the Transmission Lubrication Pressure
Date Equipment ID Code
Item Specification Actual
High Idle (L1) 210 35 kPa (30 5 psi)
Low Idle (L1) 14 + 14 – 13 kPa (2 + 2 – 1.9 psi) Introduction
The following test will determine whether the pressure of the transmission lubrication oil is within the specified limits. This oil is delivered from the power train oil cooler to the lubrication distribution manifold.Required Tools
Illustration 1 g02571852
Tooling (A) 198-4240 Digital Pressure Indicator Gp
Table 2
Required Tools
Tool Item Qty Part No Description
A 198-4240 Digital Pressure Indicator Gp
A1 1 198-4234 Digital Indicator
A2 1 198-4237 Pressure Sensor Gp
(0 to 3,445 kPa (0 to 500 psi))
A3 1 198-4236 Adapter Cable As Test Preparation
Move the machine to a smooth horizontal location.
Lower all the implements.
Illustration 2 g02118919
(L1) Pressure Tap
Locate pressure tap (L1) on the machine.
Attach tooling (A) to pressure tap (L1).Test Procedure
Start the engine. Warm the power train oil to a temperature of 84° 8°C (183° 14°F).
Make sure that the steering control lever is in the NEUTRAL position. Operate the engine at HIGH IDLE.
Check the pressure at tooling (A). The pressure at tooling (A) should be 210 35 kPa (30 5 psi).
Make sure that the steering control lever is in the NEUTRAL position. Operate the engine at LOW IDLE (700 rpm).
Check the pressure at tooling (A). The pressure at tooling (A) should be 14 + 14 - 10 kPa (2 + 2 - 1.5 psi).