6-6 Published 08/16/19 Control # 112-05
SWING 500E2 SERVICE MANUAL
Method 2
1. Follow the crane set-up procedures in this manual to set
outriggers and stabilizers and level the ma chine.
2. With the crane properly set-up, raise the boom to near
full boom angle (75-80 degrees). This must be done with
the boom fully retracted and with no load attached to the
loadline.
3. Slowly rotate the boom until is directly over the front of
the truck (behind cab mounting). With the boom directly
over the front, place a mark at the top of the frame
aligned with the center of the lift cylinder.
4. Rotate the crane clockwise, or counterclockwise until
the rotation stop system centers the control lever.
5. Again make a mark at the crane frame aligned with the
center of the lift cylinder.
6. Now rotate the crane in the opposite direction until the
rotation stop system centers the control lever.
7. Make another mark on the crane frame aligned with the
center of the lift cylinder.
8. If the rotation stop system is properly adjusted, the
distance should be the same from the first mark made to
the second mark, as it is from the first mark to the third
mark.
9. If not, loosen the nut on either side of the spacer on the
flag rod actuator rod and adjust the position of the
spacer. Tighten the two nuts and repeat steps 3 through
7 above until proper adjustment is achieved.
MAINTENANCE
General
The swing bearing is the most critical maintenance point of
the crane. It is here, at the centerline of rotation, that
stresses of loads are concentrated. In addition, the bearing
provides the only attachment between the turret and frame.
Therefore, proper care of the bearing and periodic
maintenance of the turret-to-bearing attach bolts IS A MUST
to ensure safe and efficient operation.
TORQUING SWING BEARING BOLTS
General
Maintaining proper torque value for bolts is extremely
important for structural strength, performance, and reliability
of the crane. Variations in torque can cause distortion,
binding, or complete separation of the turret from the frame.
Proper identification of bolt grade is important. When marked
as a high strength bolt (grade 8), the serviceman must be
aware of bolt classifications and that he is installing a high
strength heat-treated tempered component and the bolt
must be installed according to specifications. Special
attention should be given to the existence of lubricant and
DANGER
It is mandatory that swing bearing and T-box attaching
bolts be inspected and re-torqued after the first 300 hours
of crane operation and every 500 hours thereafter. The
bolts may loosen and cause the crane to separate from
the carrier which will result in damage to the crane and
possible injury or death to personnel.
CAUTION
Repeated re-torquing may cause bolts to stretch. If bolts
keep working loose, they must be replaced with new bolts
of the proper grade and size.
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