With the swing stand lowered
and the swing mast rearward to
disengage the swing lock, grasp the hitch pins and rotate the “A” frame to simulate operation in a sharp turn. Release
the hitch pins and slowly pull the swing mast forward as it
would be pulled by the top link during lifting. Notice how one
mast chain tightens causing the “A” frame and unit to realign
and the spring on the lock link is compressed to make the swing lock engage upon align-
ment. Now push the swing mast rearward against the lock
link tab to disengage the swing lock and loosen the chains to allow sharp turns again. This demonstrates how the top link of the tractor lift system switches the
A category 1 hitch tractor is required with the lower links stabilized. With the
swing stand lowered | connect |
|
the lower lift links to the “A” |
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Frame and top link to the swing |
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mast. Push the lift control lever |
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on the tractor to the completely |
| |
lowered position. | Lengthen |
|
the adjustable top link until the |
| |
swing mast closes tight against |
| |
the “A” Frame and the AERA- |
| |
vator swing stand is lifted 1/8 |
| |
to 1/4 inch off the ground. This |
| |
causes the combined weight of |
| |
the |
| |
hitch components to be trans- | Figure 3. Hitch Adjustment | |
ferred to the tines. | This ex- |
tended top link also causes the
7