19
308611
Maintenance
Trailer Swivel Hub
CAUTION
Improper torque on castle nut of trailer swivel hub
could leave trailer swivel hub free of restriction and
cause the swivel wheel to wobble. A wobbling swivel
wheel could cause serious damage.
Fig. 10. It is normal for the swivel wheel to turn hard
(restricted). After every 3 months of operation
1. Turn trailer swivel hub castle nut (A) until tight and
spring washers (B) are completely compressed.
2. Loosen nut 1/2 turn (180
_
), and secure with cotter
pin (C). Do not lubricate.
Fig. 10
A
C
06252A
B
Boom Arm Swivel Hub and Wheel Hub
Fig. 11. After every 3 months of operation, torque
boom arm swivel hub (A) until tight; then loosen 1/8
turn. After every 3 months of operation, torque boom
arm wheel hub (B) until tight; then loosen 1/4 turn.
Fig. 11
B
A
06253
Main Beam and Boom Arm Clamps
CAUTION
The main beam and boom arm clamps are capable
of exerting great pressures due to their design. If the
clamps are over tightened, the pressures exerted
can bend the brackets attaching the clamps to the
main beam or boom arm. Do not overtighten the
clamps.
Check daily that main beam and boom arm clamps are
capable of securing main beam and boom arm without
bending attaching brackets. Adjust as necessary.
Gun Arm Distance Sensor Adjustment
Fig. 12. Check and adjust every 3 months of operation.
Fig. 12
1/8 in.
(3 mm)
09102
Gun Arm Safety Sensor Adjustment
Fig. 13. Clean face of sensor every 6 months of
operation.
Fig. 13
09103
sensor face