SWITCH AS-ROCKER 2430773 - Caterpillar

Introduction
Note: The engine speed and/or the machine configuration that is used during this test can affect the results of this test. Refer to Testing and Adjusting, "Engine Performance - Test (Engine Speed)" for the engine speed that was used for this test. Refer to Testing and Adjusting, "Operational Checks" for the machine configurations that were used for this test.Note: The relief valve pressure settings must be set to the relief valve pressure specification before performing this operational check. Refer to Testing and Adjusting, "Specifications".Required Tools
Table 2
Required Tools    
Description    Qty    
Stopwatch     1    Test Procedure
Boom Cylinder
Illustration 1 g02794310
(A) Extension test (B) Retraction test
Start the engine.
Place the machine on level ground.
Increase the hydraulic oil temperature to 55° 5°C (131° 9°F).
Empty the bucket.
Fully extend the bucket cylinder and fully retract the stick cylinder. Refer to Illustration 1.
Position the bucket on the ground. With a stopwatch, measure the time that is required to extend the boom cylinder to full extension.Note: Do not include the time of the snubber operation of the boom cylinder.
Position the boom cylinders at full extension. With a stopwatch, measure the time that is required for the bucket to come in contact with the ground.
Refer to the specifications in Table 1 for the operating speed of the boom cylinders.Stick Cylinder
Illustration 2 g02797729
(A) Extension test (B) Retraction test
Start the engine.
Place the machine on level ground.
Increase the hydraulic oil temperature to 55° 5°C (131° 9°F).
Empty the bucket.
Position the upper surface of the boom parallel to the ground.
Fully extend the bucket cylinder. Refer to Illustration 2.
Fully retract the stick cylinder. With a stopwatch, measure the time that is required to extend the stick cylinder to full extension.
Fully extend the stick cylinder. With a stopwatch, measure the time that is required to retract the stick cylinder to full retraction.Note: Do not include the time of the snubber operation of the stick cylinders.
Refer to the specifications in Table 1 for the operating speed of the stick cylinder.Bucket Cylinder
Illustration 3 g02797744
(A) Extension test (B) Retraction test
Start the engine.
Place the machine on level ground.
Increase the hydraulic oil temperature to 55° 5°C (131° 9°F).
Empty the bucket.
Position the upper surface of the boom parallel to