STEP AS 9R6620 - Caterpillar

Table 1
Required Tools    
Part Number    Description    Qty    
1U-9369     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 1.0 m (1.6 to 3.3 ft)
Total travel distance must be at least 25 m (82.0 ft) long. Travel test ground must be hard and as level as possible.
Draw a 25 m (82.0 ft) straight line on travel test ground as a reference line.
Start the engine.
Illustration 2 g01117636
Monitor and keypad (50) Engine speed (51) Gain/Response (52) AEC switch (53) Gain/Response switch (54) Heavy lift switch
Place the machine controls at the following settings:
Engine speed dial "10"
AEC switch OFF
Heavy lift switch OFF (digging mode)
Gain/Response "CAT" (normal mode)
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 the HIGH position. The rabbit will be illuminated on the keypad.
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. The tortoise will be illuminated on the keypad. Repeat Steps 9 through 11.
Table 2
Travel Time    
Travel Speed    New    Rebuild    Service Limit    
HIGH     Forward     17.5 sec or less     20.0 sec or less     22.5 sec or less    
Reverse
LOW     Forward     27.0 sec or less     31.0 sec or less     35.5 sec or less    
Reverse Note: Table 3 represents the travel deviation (distance) from the reference line.
Table 3
Travel Deviation    
Travel Speed    New    Rebuild    Service Limit    
HIGH     Forward    
800 mm (31.5 inch)or less    
1200 mm (47.2 inch)or less    
1500 mm (59.1 inch)or less    
Reverse
LOW     Forward    
800 mm (31.5 inch)or less    
1200 mm (47.2 inch)or less    
1500 mm (59.1 inch)or less    
Reverse