Alamo GR60, GR72 Torque Limiter - GR72, Seasonal Torque Limiter Maintenance

MAINTENANCE

GR60/72 02/07 Maintenance Section 5-8

MAINTENANCE

Torque Limiter - GR72

Avoid overheating of the Torque Limiter by too long or too frequent slipping, as this can damage the friction

plates and limiter parts. When checking Torque Limiter for overheating, DO NOT touch with hand. Torque

Limiter could be extremely hot and cause severe burn.

If an adjustment is required, this may be done in the field by following the procedure outlined below. Following

these instructio n s w ill giv e ma xim u m ra te d to rq ue and lon g life. (See Mnt-0018).

1. With the three Capscrews (#1) backed out until the points are below the surface of the circular Adjusting

Nut (#2), run Adju st ing Nut up fing er -t igh t, or slightly less than finger-tight.

2. Alternately tighte n the hardened, cu p point Cap screws (# 1) no more than one-half turn at a time until the

Capscrew heads "Bottom Out". Do not over tighten the Capscrews nor completely flatten the Spring

Washers (#3).

If the Hub is removed from the Shaft for any reason, the Shaft and Hub should be coated with a heavy grease

before reassembly to prevent Hub from freezing to Shaft.

It is important that the Torque Limiter slips when an obstacle or load heavier than the setting is encountered.

Before using the cutter each season, use the following procedure to make sure the torque limiter will slip and

give the overloa d pr ot ection required.

1. Loosen Bolts (#1) until gap between adjusting nut (#2) and guide ring is approximately 1/16".

2. Attach machine to tractor, set engine at approximately half throttle and quickly engage PTO. This

procedure will break Torque Limiter facings loose and allow the proper torque to be maintained.

3. Return the bolts to their original position as described in (b) above.