HOUSING 8N2457 - Caterpillar

Table 1
Required Tools
Description Qty
Measuring Tape 1
Stopwatch 1
Illustration 1 g00296317
(A) Preliminary run 5 m (16.4 ft)
(B) Travel distance 20 m (65.6 ft)
(C) Bucket height 0.5 to 1 m (1.6 to 3.3 ft)
Travel distance must be at least 25 m (82 ft) long. Travel test ground must be hard and as level as possible.
Draw a 25 m (82 ft) straight line on travel test ground as a reference line.
Start the engine.
Place the machine controls at the following settings: Engine speed dial "10" and AEC switch OFF.
Increase the hydraulic oil temperature to 55° 5°C (131° 9°F).
The bucket should be empty.
Position the machine so that one track is parallel with the reference line. Position the machine for the travel test. Refer to Illustration 1.
Place the travel speed control switch in HIGH position.
Move the machine by operating both travel levers at the same time.
The first 5 m (16.4 ft) are for a preliminary run. Measure the travel time that is required to travel the remaining 20 m (65.6 ft). Measure the time that is required in each direction.
Measure the travel deviation from the reference line.
Place the travel speed control switch on the LOW position and repeat Steps 9 through 11.
Table 2
Travel Time (time in seconds)
Travel Speed New Rebuild Service Limit
HIGH Forward 14.0 or less 15.0 or less 16.0 or less
Reverse
LOW Forward 22.8 or less 24.3 or less 25.8 or less
Reverse Note: The following table represents the travel deviation (distance) from the reference line.
Table 3
Travel Deviation
mm (inch)
Travel Speed New Rebuild Service Limit
HIGH Forward 800 (31.5) or less 1200 (47.2) or less 1500 (59.1) or less
Reverse
LOW Forward 800 (31.5) or less 1200 (47.2) or less 1500 (59.1) or less
Reverse