BEARING AS 5088258 - Caterpillar

If the speeds are not correct, refer to the Testing and Adjusting, "Hydraulic System Troubleshooting".Tilt Cylinder Speed Test
Note: Perform the tilt cylinder speed test with an empty general purpose bucket. If a general purpose bucket is not available, then use a load weight of 200 kg (441 lb).
Fasten the seat belt and lower the armrest.
Start the engine.
Disengage the parking brake.
Run the engine at HIGH IDLE with the pilot operated hydraulic control ( hydrostatic) in the HOLD position.
Operate the tilt cylinders through at least five cycles. This will ensure that there is warm oil in the tilt cylinders.
Tilt the bucket to the full TILT BACK position. Raise the bucket to the full RAISE position.
Tilt the bucket from the full TILT BACK position to the full DUMP position. Record the time from the full TILT BACK position to the full DUMP position.
Tilt the bucket from the full DUMP position to the full TILT BACK position. Record the time from the full DUMP position to the full TILT BACK position.
Lower the bucket to the ground.
Table 2
TRAVEL TIME (SPEED) FOR THE TILT CYLINDERS    
Position of the Hydraulic Control     236B2/ 252B2    
DUMP     2.1 0.5 seconds    
TILT BACK     1.6 0.5 seconds    If the speeds are not correct, refer to the Testing and Adjusting, "Hydraulic System Troubleshooting".Hydraulic Quick Coupler (if equipped)
Fasten the seat belt and lower the armrest.
Start the engine.
Disengage the parking brake.
Run the engine at HIGH IDLE with the pilot operated hydraulic control ( hydrostatic) in the HOLD position.
Press the switch in order to engage the quick coupler. Record the time that is needed to engage the quick coupler. Press the switch in order to disengage the quick coupler. Record the time that is needed to disengage the quick coupler.
Table 3
TRAVEL TIME (SPEED) FOR THE COUPLER CYLINDERS    
Engaging the quick coupler     3.0 seconds maximum    
Disengaging the quick coupler     3.0 seconds maximum    If the speeds are not correct, refer to the Testing and Adjusting, "Hydraulic System Troubleshooting".Drift Check (Lift and Tilt Cylinder)
Use this procedure to determine the amount of wear that occurs in the lift cylinders and the tilt cylinders.Note: Perform the following tests with a general purpose bucket on the machine. If a general purpose bucket is not available, use a load weight of 200 kg (441 lb).
Before you perform these procedures, refer to Testing and Adjusting, "Machine Preparation" for the correct procedure for machine preparation.
Run the engine at HIGH IDLE.
Operate the lift cylinders through at least five cycles. This will ensure that there is warm oil in the lift cylinder.
Operate the tilt cylinders through at least five cycles. This will ensure that there is warm oil in the tilt cylinder.
Raise the bucket to the full RAISE position.
Tilt the bucket forward until the bucket is parallel with the ground.
Reduce the engine speed to LOW IDLE. Stop the engine.
Mark the cylinders.
Use a stopwatch to count for one minute. Measure the drift of the cylinders.
Table 4
CYLINDER DRIFT    
Cylinders