918070/FP0811
3-31
Printed in U.S.A.
Travel Speed Selection
Two travel speed ranges can be selected by using the
Travel Speed Switch (1) located on the control console.
See Figure 3-38. The 503Z and 603 units use an Auto-
2-Speed transmission on the drive motors. This feature
enables the transmission to automatically switch from
high to low speed when it senses a load.
Travel speeds are:
•
Slow Speed Maximum = 1.7 mph (2.8 km/h)
•
High Speed Maximum = 2.9 mph (4.7 km/h)
Figure 3-38 Travel Speed Selection
General Travel Instructions
1. Avoid sudden movements and sharp turns.
2. Travel slowly on rough, frozen, or uneven terrain.
3. Travel straight up and down slopes; never travel
across the slope. See Figure 3-39. Extend arm and
lower boom to keep the bucket about 12” (300
mm) off the ground. If the machine starts to slide
or becomes unstable, lower the bucket to regain
control. If the engine stalls, lower the bucket, make
sure that all controls are in the neutral position and
restart the engine. See “Operating on Slopes” on
page 3-33 for more information about operating
the machine on slopes.
Figure 3-39 Travel Down Slopes
4. To travel straight, push both travel control levers
(or pedals) forward (or rearward). The farther the
levers (or pedals) are moved, the faster the travel
speed.
5. Pivot (or wide) turns are made by rotating only one
track forward (or rearward). The machine will
pivot on the stationary track.
6. Spin turns are made by rotating one track forward
and one track rear. The machine will spin around
its mid-point.
7. The excavator can travel in water that comes up to
the top of the upper track rollers. Be sure that the
footing is solid so that the machine will not sink.
CAUTION
The slow-speed setting should be selected
to prevent automatic up-shifts if conditions
warrant.
1
Summary of Contents for 503Z
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Page 28: ...Printed in U S A 1 22 918070 FP0811 INTENTIONALLY BLANK To be removed as dealer s file copy ...
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Page 94: ...Printed in U S A 4 4 918070 FP0811 Maintenance Label ...