ELEMENT-HEATING 2370928 - Caterpillar

Table 3
Ripper Cylinder Drift    
Oil Temp.    
38 3°C (100 5°F)    
49 3°C (120 5°F)    
66 3°C (150 5°F)    
82 3°C (180 5°F)    
Maximum Allowable Drift    
6.0 mm (0.24 inch)    
6.0 mm (0.24 inch)    
6.0 mm (0.24 inch)    
6.0 mm (0.24 inch)    
Time Interval (minutes)     5.0     3.1     1.7     1.1    Causes of Ripper Cylinder Rod Drift
Ripper cylinder rod drift is caused by the following occurrences.
Loose oil line connections or damaged oil lines with oil leaks.
Leakage around the piston seals in the ripper cylinder.
There is leakage in the control valve (worn valve section and worn spool valve).
The relief valve on the rod end needs to be adjusted, cleaned, or replaced.
There is leakage in the diverter valve.Drift Test For Multipurpose Bucket (Cylinder Rod)
Measure Cylinder Rod Drift (Multipurpose Bucket)
Measure cylinder rod drift for the multipurpose bucket by using the following procedure.
Do not stall the implements during hydraulic system warm-up. Stalling the implements causes oil to flow across the relief valve. This can damage the vane-type hydraulic pump when the system is cold. Before you allow the