KIT-PUMP CONTROL 2337336 - Caterpillar

Table 18
Cylinder Drift    
Item    New    Rebuild    Service Limit    
Boom Cylinder    
4.5 mm (0.18 inch) or less    
9.0 mm (0.35 inch) or less    
18.0 mm (0.71 inch) or less    
Stick Cylinder    
10.0 mm (0.39 inch) or less    
15.0 mm (0.59 inch) or less    
25.0 mm (0.98 inch) or less    
Bucket Cylinder    
10.0 mm (0.39 inch) or less    
15.0 mm (0.59 inch) or less    
25.0 mm (0.98 inch) or less    Cylinder Operating Speed
Table 19
Required Tools    
Part Number    Description    Qty    
  Stopwatch     1    Preparation
Reference: Make reference to "Preparation For Operational Checks" .
Place the machine on level ground.
The bucket should be empty.Test (Boom Cylinders)
Fully retract the bucket cylinder and the stick cylinders.Extension Test
Start with the bucket on the ground. Measure the time that is required for the boom cylinders to reach full extension.
Illustration 13 g00298498
(A) Extension test (B) Retraction testRetraction Test
Start with the boom cylinders at full extension. Measure the time that is required for the bucket to come in contact with the ground.Test (Stick Cylinder)
Position the upper surface of the boom parallel to the ground.
Fully extend the bucket cylinder.Extension Test
Start with the stick cylinder in the full retracted position. Measure the time that is required for full extension of the stick cylinder.
Illustration 14 g00298558
(A) Extension test (B) Retraction testRetraction Test
Start with the stick cylinder in the full extended position. Measure the time that is required to retract the stick cylinder.Test (Bucket Cylinder)
Position the upper surface of the boom parallel to the ground.
Position the stick in a perpendicular position to the ground.Extension Test
Start with the bucket cylinder in the full retracted position. Measure the time that is required for full extension of the bucket cylinder.
Illustration 15 g00298598
(A) Extension test (B) Retraction testRetraction Test
Start with the bucket cylinder in the full extended position. Measure the time that is required to retract the bucket cylinder.
Table 20
Cylinder Operating Speed (seconds)    
Item    New    Rebuild    Service Limit    
Boom     Extension     3.2 0.5     4.1 max.     4.7 max.    
Retraction 2.2 0.5     2.9 max.     3.4 max.    
Stick     Extension     2.5 0.5     3.2 max.     3.9 max.    
Retraction 2.6 0.5     3.4 max.     4.0 max.    
Bucket     Extension     3.7 0.5     4.8 max.     5.6 max.    
Retraction 2.0 0.5     2.7 max.     3.1 max.