GASKET 3450835 - Caterpillar

Table 1
Tools
Pt. No. Description
1U-5481 Pressure Gauge Group(1)
1U-5482 Pressure Adapter Group
(1) 198-4240 Digital Pressure Indicator is also available.
Personal injury or death can result if two persons are not used in the following procedure.
Personal injury or death can result from machine articulation or movement.Machine frames can move and a person can be crushed.Connect the steering frame lock link between the front and rear frames before working on machine.
Personal injury or death can result from escaping fluid under pressure.Escaping fluid under pressure, even a very small pin-hole size leak, can penetrate body tissue and cause serious injury and possible death. If fluid is injected into your skin, it must be treated immediately by a doctor familiar with this type of injury.Always use a board or cardboard when checking for a leak.
Before you perform the test procedure, complete the following:
Machine Preparation for TroubleshootingReference: Refer to the Service Manual module Testing and Adjusting, "Machine Preparation for Troubleshooting" for the machine that is being serviced.
Illustration 1 g01376747
Steering Frame Lock is in the LOCKED position.
Install the steering frame lock, as shown.
Engage the parking brake. Move the transmission direction selector to the NEUTRAL position. Reference: For the correct procedure for machine preparation, refer to Testing and Adjusting, "System Pressure - Release".
Illustration 2 g01621228
(1) Steering control valve
(2) Pressure tap
(3) Steering cylinder crossover relief valve
Install a 0 to 40000 kPa (0 to 5800 psi) pressure gauge onto pressure tap (2).
Start the engine. Operate the engine at high idle. Exercise the steering system until the normal operating temperature is reached. Normal operating temperature may be monitored with the VIMS ELECTRONIC CONTROL or the Electronic Technician software.
After the oil has reached normal operating temperature, lower the work tool to the ground. Stop the engine.
Illustration 3 g01621231
(1) Steering control valve
(3) Steering cylinder crossover relief valve
(4) Locknut
(5) Adjustment screw Note: Steering control valve (1) is located behind the operator's station. Access is gained by opening an access door that is behind the cab.Note: Relief valve (3) is located on the steering control valve.
Loosen locknut (4) on steering crossover relief valve (3). Turn adjustment screw (5) counterclockwise by two full turns. This will lower the setting of the steering crossover relief valve to a setting that is lower than the cutoff pressure of the steering pump. Hold adjustment screw (5) in place and tighten locknut (4).
Start the engine. Raise the work tool slightly off the ground. Run the engine at high idle. Note: While you perform the next steps, do not keep the STIC steering control lever in the LEFT TURN position or in the RIGHT TURN position for more than ten seconds. If necessary, release the steering control lever and wait for 30 seconds before you repeat the step.
Move the STIC steering control lever to the LEFT TURN position or to the RIGHT TURN position. Hold the steering control lever in place until a reliable pressure reading is obtained.
Record the pressure reading on the pressure gauge. The reading should be lower than 31000 500 kPa (4500 75 psi). Turn adjustment screw