1.Flange yoke
2.Friction disc
3.Hub,
4.Drive plate
5.Drive plate - SN
6.Thrust plate
7.12 mm x 115 mm GR8.8 HHCS
8.Compression spring
9.Flat washer
10.12 mm x 1.25P Nylok lock nut
11.12 mm x 65 mm GR8.8 HHCS
12.12 mm x 1.5P Nylok lock nut
Figure 13. Slip Clutch Assembly
SLIP CLUTCH ADJUSTMENT
The slip clutch is designed to slip so that the gearbox and driveline are protected if the cutter strikes an obstruction.
A new slip clutch or one that has been in storage over the winter may seize. Before operating the cutter, make sure it will slip by performing the following operation:
1.Turn off tractor engine and remove key.
2.Remove driveline from tractor PTO.
3.Loosen six 12 mm cap screws (7) to remove all tension from compression spring (8).
4.Hold clutch hub (3) solid and turn shaft to make sure clutch slips.
5.If clutch does not slip freely, disassemble and clean the flange yoke (1), clutch hub (3), drive plate (5), and thrust plate faces (6).
6.Reassemble clutch.
7.Compress each of the six compression springs (8) by tightening the six cap screws (7) and lock nuts (10). The compression springs should be compressed to a height of
8.If a clutch continues to slip when the springs are compressed to 1.36", check friction discs (2) for excessive wear. Discs are 1/8" when new. Replace discs after 1/16" wear. Minimum disc thickness is 1/16".
SHIELDING REPAIR
Full chain shielding must be installed when operating in populated areas or other areas where thrown objects could injure people or damage property.
•If this machine is not equipped with full chain shielding, operation must be stopped when any- one comes within 300 feet (92 m).
•This shielding is designed to reduce the risk of thrown objects. The mower deck and protec- tive devices cannot prevent all objects from escaping the blade enclosure in every mowing condition. It is possible for objects to ricochet and escape, traveling as much as 300 feet (92 m).
Repairing Optional Chain Shielding
Inspect chain shielding each day of operation and replace any broken or missing chains as required.
24 Owner Service | MAN0577 (6/29/2007) |
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