Great Plains 4336 DH Operator Manual - Manual (Page 35)

Great Plains Manufacturing, Inc. Table of Contents Index Maintenance and Lubrication 31
05/22/2012 Table of Contents Index 556-100M
End of Season
8. Clean machine as much as possible. Remove all dirt
on rust prone parts like disc blades and bolt threads.
9. Check over the machine for damaged or worn parts.
Replace or rotate worn parts as needed--hinge bolts,
clevis pins, bearings, blades, etc.
10. Check all bolts for tightness. Tighten as needed.
11. Check and tighten or replace any hydraulic leaks.
Check hoses for any leaks.
12. The wheel bearings and tandem pivot bearings
should be cleaned and repacked annually or 2500
acres.
13. Remove the gang bolt thread protector caps and
check gang nut torque (900 to 1100 ft-lbs). Clean out
any dirt on castle nut and threads. Use Anti-Seize on
the gang bolt threads before tightening castle nut.
14. Grease the Disk Harrow in all locations shown in the
lubricating section.
15. If stored outside, place a protective coating of grease
or “plow paint” on all earth working parts to prevent
rusting.
16. If storing outside, unfold Disk Harrow to prevent
water entry into wing gang bearings.
17. If you are storing Disk Harrow unfolded, remove fold
cylinder clevis bolts, block up cylinder and fully
retract cylinder rods. This will extend the life of the
cylinder seals and reduce internal leaks.
18. Place boards under the disk gangs and lower the
Disk Harrow to the ground retracting the lift cylinders.
If disk is folded, pivot automatic transport locks out of
the way before lowering disk.
Beginning of Season
19. Hitch the tractor to the Disk Harrow and connect the
hydraulic hoses.
20. Check fold and lift cylinders for leaks that could have
caused air to enter cylinders. If leaks are noticed
repair cylinders and fully purge air from cylinders by
unpinning cylinder, block up and fully cycle cylinders
back and forth several times.
Unfolding machine with air in cylinders may cause death or
major machine damage. Pin cylinders to wings and slowly
unfold machine.
21. Slowly raise the machine a couple of times to its full
height and hold lever for 10 to 15 seconds to purge
air from lift cylinders.
22. Reposition wing automatic transport locks to engage
the lift lugs when folded.
23. If machine was not serviced and greased at end of
last season, perform steps 9 thru 14 from End of
Season section.
24. Make sure all moving parts move freely and do not
bind.
25. Take the time to read the operators manual and
refresh yourself with the safety information and oper-
ating instructions.
26. It is the owner’s responsibility to see that all opera-
tors of the Disk Harrow know the safety and operat-
ing information found in this manual.