VALVE GP-SOLENOID & RELIEF 3350158 - Caterpillar

Personal injury or death can result from sudden movement of the lift cylinders or the tilt cylinders. Do not stand under the work tool when you are testing or adjusting the lift cylinders or the tilt cylinders.Do not stand under the lift arms when you are testing or adjusting the lift cylinders or the tilt cylinders.
Specifications
Table 1
Lift Drift Times Without Ride Control
Temp Cylinder Distance and Time
40° C (104° F) - 49° C (120° F) Lift 20 mm (0.78 inch) in 5 Minutes
50° C (122° F) - 59° C (138° F) Lift 20 mm (0.78 inch) in 2.5 Minutes
60° C (140° F) - 69° C (156° F) Lift 20 mm (0.78 inch) in 1.7 Minutes
Table 2
Lift Drift Times With Ride Control
Temp Cylinder Distance and Time
40° C (104° F) - 49° C (120° F) Lift 25 (1 inch) in 5 Minutes
50° C (122° F) - 59° C (138° F) Lift 25 (1 inch) in 2.5 Minutes
60° C (140° F) - 69° C (156° F) Lift 25 (1 inch) in 1.7 Minutes
Table 3
Tilt Drift Times
Temp Cylinder Distance and Time
40° C (104° F) - 49° C (120° F) Tilt 15 mm (0.6 inch) in 5 Minutes
50° C (122° F) - 59° C (138° F) Tilt 15 mm (0.6 inch) in 2.5 Minutes
60° C (140° F) - 69° C (156° F) Tilt 15 mm (0.6 inch) in 1.7 Minutes Note: The distances that are listed for drift in the tables are for a new machine.Introduction
This test will check the drift rate of the lift cylinder. The drift rates will change according to many conditions (hydraulic oil temperature, type of work tool, or load on the work tool).
The utilization of Cat® ET is the preferred method to perform the Lift and Tilt Cylinder Drift Check. In cases where the hydraulic oil temperature requirement cannot be met in order to perform the test in Cat® ET, perform the test procedure listed below.
Test Procedure
Check The Lift Cylinder Drift
Illustration 1 g03407406
Manual lowering ball valve
Ensure that the ball valve (manual lower) is in the CLOSED position. Note: The ball valve is located in the front frame near the articulation hitch.
Start the engine.
Cycle the lift cylinders five times.
Fully extend the lift cylinders. Move the lift control lever to the HOLD position. Turn the engine start switch to the OFF position.
Check the distance of rod movement for the lift cylinders at the different temperatures in Table 2. Compare the distance to the values that are listed in Table 2.
Start the engine. Fully extend the lift cylinders. Move the lift control lever to the HOLD position.
Cycle the tilt cylinder five times.
Position the work tool so that the bottom of the work tool is parallel to the ground. Move the tilt control lever to the HOLD position. Turn the engine start switch to the OFF position.
Check the distance of rod movement for the tilt cylinder at the temperatures in Table 2. Compare the distance to the values that are listed in Table 2.
Perform the