MAINTENANCE
Slip Clutch - GR60
A slip clutch is incorporated in the PTO driveline. It is designed to slip, absorb the shock load, and protect the driveline. There are two types of clutches furnished. (1) A clutch with 8 coil springs and (2) A clutch with a single disc spring with 6 adjusting nuts.
After the first hour of operation, the slip clutch should be checked for overheating. After this first check, the slip clutch should be checked weekly or anytime there is overheating. (1)To adjust the coil spring slip clutch, tighten the spring bolts 1/8 (maximum) turn at a time. Bolts should NEVER be adjusted to the point where the coil springs are compressed solid. Minimum spring compression length is
The slip clutch should be checked periodically and adjusted to compensate for wear. The lining plates are 1/8" thick when new. Replace after 1/32" wear. If the mower has been idle for an extended period of time, or in wet weather, before operating check to be sure the friction lining plates are not rusted/corroded together. Should this occur refer to the procedure described in the "Seasonal Clutch Maintenance" section on the next page.
Seasonal Slip Clutch Maintenance
It is important that the clutches slip when an obstacle or load heavier than the clutch setting is encountered. Therefore, if the machine sits outside longer than 30 days and is exposed to rain and/or humid air it is important to make sure that the clutch lining plates are not rusted/corroded together. Before using the cutter use the following procedure to make sure the clutch will slip and give the overload protection required.
1.Loosen nuts
2.Attach cutter to tractor and start the tractor. Set the engine speed at 1200 RPM.
3.Mark outer plates as shown in
4.Engage the PTO (approximately one second) and then quickly disengage it. The friction lining plates should break loose (check the mark).
5.Turn tractor off. (1) Tighten the nuts on the coil spring clutch to their original position of
GR60/72 02/07 | Maintenance Section |
© 2007 Alamo Group Inc.
