Landoll 5531 Grain Drill - Manual (Page 55)

OPERATION AND MAINTENANCE
4-27
Figure 4-22: Air Spring Adjustment
Air Spring Adjustment
1. The air pressure delivered to the air springs is the
same for all openers. To be able to increase the
down pressure for specific row units such as in wheel
track locations, the air spring has two mounting
positions. The normal position is forward, with a
heavier setting by sliding the air spring to the rear.
The heavier setting will increase the down pressure
by approximately ten percent.

CAUTION
2. To adjust the air spring location, first relieve the
system air pressure. Loosen, but do not remove the
3/4-16 hex jam nut at the top of the air spring and the
1/2-13 x 1 hex head cap screw below the air spring
and air spring pivot. Slide the air spring forward or
rearward to the desired location (See Figure 4-22.)
IMPORTANT
Make sure the air spring has fully reached the ends
of the top and bottom slots before retightening. If the
air spring is not in the ends of the slot, it will be out
of alignment and can rub internally wearing a hole.
Also, be sure the air spring is not twisted when
retightening the fasteners.
3. Retighten the top jam nut and bottom hex head cap
screw to secure the air spring. Recharge the system
with air to normal working pressure.
NOTE
Maximum torque on the top jam nut is 30 ft. lbs.
air spring adjustment
3/4-16 HEX JAM NUT
AIR SPRING
AIR
SPRING
PIVOT
1/2-13 X 1
HEX HEAD
CAP SCREW
AIR OPENER
ASSEMBLY
HEAVY
SETTING
NORMAL
SETTING
NOTE:
MAXIMUM TORQUE
30 FT. LBS.
Relieve system air pressure before attempting to
adjust or service any air spring component.
Make sure all components are in place and
secure before charging the system.