PISTON & ROD GP 2158023 - Caterpillar

Table 1
Required Tools    
Description    Qty    
Stopwatch     1    
Illustration 1 g00297292
Start the engine.
Position the machine on level ground.
Increase the hydraulic oil temperature to 55° 5°C (131° 9°F).
Raise a track off the ground. Refer to Illustration 1.
Put a mark on a shoe of the raised track.
Place the machine controls at the following settings: Engine speed dial "10" and AEC switch OFF.
Place the travel speed control switch in HIGH position.
Move the travel lever of the raised track to full travel position.
Measure the time that is required for the raised track to make three complete revolutions. Measure the time that is required in each direction.
Place the travel speed control switch in the LOW position and repeat Steps 8 through 9.
Table 2
319D Time For Three Revolutions (time in seconds)    
Travel Speed    New    Rebuild    Service Limit    
HIGH     Forward     20.5 or less     21.6 or less     22.7 or less    
Reverse
LOW     Forward     34.0 or less     35.0 or less     36.0 or less    
Reverse