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4 -13
4.7 PTO BRAKE ADJUSTMENT
• Adjust the PTO brake after every 100 hours of
operation.
• Remove the attachment and lower the rear of the
tractor to the ground. Carefully clean the front of
the transmission. Remove the quick hitch studs
from the transmission and remove the quick hitch
casting and PTO brake assembly (Figure 5).
NOTE:
The attachment gasket must be replaced if
damaged.
• Tighten all PTO brake bolts until the springs are
solid. Back all bolts up 1/2 turn (Figure 5).
NOTE:
Do not tighten the bolts in a circular sequence,
by tightening the bolt next to one which was just tight-
ened. The bolts should be tightened in a cross
sequence, by tightening one bolt, then tightening the
bolt which is across from it on the plate. Continue
tightening the bolts in this sequence until all the bolts
are tightened.
• Make sure the trunnion block is on the shipper
shaft and held in place by the dog. The dog should
rest on the spiral teeth of the clutch dog plate.
Install the gasket.
• Align the splines on the quick hitch shaft with those
in the dog. Slide the quick hitch casting and PTO
brake assembly back into the place on the front of
the transmission. Install the quick hitch studs and
tighten.
WARNING:
Stop the engine before adjusting
the PTO brake.
Figure 4
OH0191
1. Adjusting Nuts
2. Jam Nuts
3. Adjustment Bracket
4. Pivot Plate
5. Brake Rod Assembly
6. Hi-Lo Control Rod
7. Large Spring
8. Hi-Lo Lever Assembly
9. Control Extension Rod
1
2
3
4
5
6
7
8
9
1
1
1
2
2
2
1
2
Figure 5
OH0210
1. PTO Brake Bolts
2. Springs
3. PTO Shaft
3
1
2
2
2
2
Figure 6
OH0200
1. Quick Hitch Adapter
2. Quick Hitch Stud