215333
242
Revision A
1008473
A
Figure 4.246: Driveline Shield Cone
1.
Release two lever clamps (A) on the shield cone installed at
the header swivel gearbox.
2.
Slide shield away from gearbox.
1022508
A
B
Figure 4.247: Driveline and Gearbox
3.
Mark horizontal line (A) across friction discs and drive
plates with a paint marker.
4.
Back off all pressure plate tensioning nuts (B) one and a
half revolutions.
5.
Reattach the shield cone onto the header swivel gearbox.
6.
Start tractor and adjust engine speed to 1000 rpm.
7.
Engage the tractor
’
s power take-off (PTO) for 3
–
5 seconds.
Repeat three times.
NOTE:
The clutch will slip with a torque of 1350 Nm (995 lbf·ft) at
1000 rpm.
8.
Shut down the engine, and remove the key from
the ignition.
1022509
A
B
Figure 4.248: Driveline and Gearbox
9.
Inspect the clutch. Horizontal mark (A) across the friction
discs should no longer line up with the metal drive plates.
This indicates the clutch was slipping.
NOTE:
It is not necessary for the indicating mark on the friction
discs to be misaligned from the metal drive plates on both
sides of the disc. The friction discs are not splined to any
component and will likely only slip on one surface.
10. Remove the shield cone from the header swivel gearbox.
11. If acceptable slippage is detected, retighten clutch spring
adjustment nuts (B). For instructions, refer to
12. If acceptable slippage is not detected, the clutch should be
removed and disassembled for inspection/repair. Contact
your MacDon Dealer.
