Page 20 | Stellar
®
5521 Telescopic Crane Owner’s Manual
5521 Stability Data
Max Horizontal Reach: 252” (From the center of rotation to boom tip)
Boost Stability Test Weight: 1650 lbs.
Non-Boost Stability Test Weight: 1400 lbs.
Test Procedure
1. Rotate the crane into Zone 1 position.
2. With the crane fully retracted and the boom
horizontal, winch the test weight o the ground.
Note: Keep weight within six inches of the
ground at all times.
3. Extend the boom outward until full extension
has been reached or until the truck becomes
unstable (Again, use the winch to keep the
weight within six inches of the ground.)
4. If the boom goes full extension without
becoming unstable, the crane is termed stable
for this zone and 100% can be written in the
Zone 1 data box.
5. If the truck becomes unstable prior to going
full extension, retract the boom until the truck
becomes stable and measure the horizontal
reach in this position (center of rotation to
boom tip). This is the stable horizontal reach for this zone. Stable horizontal reach divided by
Maximum horizontal reach multiplied by 100 equals the percentage of rated capacity for this
zone. Use the following formula to determine the percentage of rated capacity:
6. Record this number in the data box for Zone 1. This is the revised capacity due to stability for
this zone.
7. Repeat this procedure for each zone until the worksheet is completed.
8. This is the revised capacity based on stability of this package.
Stability Procedure Continued...
Stellar
®
Cranes are shipped with a load level indicator
that is used to determine if the truck is level (side
to side) before using the crane to pick/move a load.
This level should be installed in the isolated crane
compartment of the body. If level indicator is missing
or damaged, please contact Stellar Customer Support
for a replacement.
Crane Load Level Indicator
PN 76483
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