Section 1: Assembly & Set-up
DH3510 & DH3512 Disc Harrow 322-251M
12/7/18
15
Hook-up Hydraulics
The standard set-up requires one duplex outlet to
operate the two-way lift cylinder.
Refer to Figure 1-9 on page 14:
1.
If not already completed, route hydraulic hoses (#12)
through hose spring support loop (#15).
2. Connect quick release coupler on end of hydraulic
hoses (#12) to tractor remote outlet.
3. Start tractor and operate control lever to raise and
lower Disc Harrow. If the implement works opposite
of what it should, shut tractor down and switch
hydraulic hose connections at the duplex outlet.
Refer to
4. Cycle lift cylinder back and forth several times to
purge air from it. If operation continues to be
sluggish, it may be necessary to purge air from the
cylinder and hydraulic lines. Refer to
below.
Purge Hydraulic System
!
WARNING
To avoid serious injury or death:
Hydraulic fluid under high pressure can penetrate the skin
and/or eyes causing a serious injury. Wear protective gloves
and safety glasses or goggles when working with hydraulic
systems. Use a piece of cardboard or wood rather than hands
when searching for leaks. A doctor familiar with this type of
injury must treat the injury within a few hours or gangrene
1.
Shut tractor down and relieve all hydraulic pressure
before dismounting. Refer to
2. With implement lowered to the ground, remove
connecting pin from rod end of cylinder. Block
cylinder support in a vertical position with rod end up.
3. Cycle hydraulic system to extend and retract cylinder.
Repeat this process 2 times ending with cylinder fully
retracted.
4. Shut tractor down and relieve all hydraulic pressure
before dismounting.
5. Crack fitting at the rod end of cylinder to allow air to
escape.
6. Restart tractor and slowly activate tractor control
lever to extend the cylinder rod until air free oil leaks
from the fitting.
7.
Follow tractor shutdown procedures before
dismounting tractor.
8. Tighten fitting on the rod end of cylinder.
9. Pin clevis on rod end of cylinder to the Disc Harrow.
10. Crack fitting at the base end of the cylinder and
repeat steps 6-8.
11. Tighten fitting on base end of cylinder.
12. Slowly cycle Disc Harrow to transport position while
checking to make sure hydraulic hoses are not
pinched in the process.
