J&M 750-14 - Manual (Page 13)

13
ADJUSTING THE SLIP CLUTCH
ADJUSTING THE LOWER FLIGHTING AND HANGER BUSHING ASSEMBLY
MAKE SURE THAT ALL POWER IS SHUT OFF BEFORE ADJUSTING THE FLIGHTING ASSEMBLY.
If the drive-dog and hanger assembly are becoming excessively hot during unloading, the lower flighting and/or
hanger may need adjusting. The hanger bushing assembly has elongated holes where it attaches to the outer
tube assembly. Loosen the two 3/8” bolts on the hanger bushing assembly. Adjust the hanger either up or
down and locate in center between flighting center and drive-dog. Retighten the bolts. (Make certain that the
flighting center and drive-dog does not rub the hanger bushing assembly causing them to become hot.)
If the hanger can no longer be adjusted by moving it up or down on the elongated holes, both the hanger
bushing assembly and the lower flighting will have to be removed. After removing them from the tube assembly,
place a shim (between 1/8” - 3/16” thick) where the gearbox and the spline coupler (welded to lower flighting)
meet. Replace the lower flighting and reattach the hanger to the tube assembly. Readjust the hanger assembly.
(NOTE: The bottom of the lower flighting is not attached to the gearbox with any bolts or set screws but may
be “froze” fast. Be careful when removing the lower flighting from the gearbox.) For easier removal of the lower
flighting, keep the gearbox at the bottom intact, remove the 2 3/8” bolts from the hanger bushing assembly and
pull the lower flighting off of the gearbox.
After adjusting the lower flighting, check the upper flighting for readjustment.
IMPORTANT: If the machine has never been used or has not been operated for (1) season, the
following is recommended.
Make sure the tractor is off and the PTO is disengaged.
Disconnect the driveline from the tractor.
Locate the (6) bolts (Item 8) on the O.D. of the clutch pak. Loosen the bolts until they rotate freely,
finger tighten each bolt, and then tighten each bolt one half turn. 1)
2)
3)
4)
5)
6)
7)
8)
9)
Tools required: (1) 1/2” Box wrench or socket.
Attach the implement to the tractor with a
hitch pin, and the driveline to the tractor
PTO shaft.
Start the tractor. Engage the PTO and run
a few seconds, or until the friction clutch
visibly smokes.
Disengage the tractor PTO and shut the
tractor off.
Disconnect the driveline from the tractor.
Tighten the (6) bolts (Item 8) on the O.D. of
the clutch pak until the compression plate
(Item 7) is in contact with the housing (Item
1), then keep tightening each bolt to 30 ft.
lbs.
Locate the (4) bolts (Item 10) that attach
the yoke & hub (Item 12) to the clutch pak
and check that each bolt is tightened to 30
ft. lbs.