Keeping your Rockford or Twin Disc over center clutch in good operating condition is easy if you know these guidelines. This Foley Tech Tip will show you how to check your clutch for adjustment, how to adjust it, and how to keep it lubricated.

When to Adjust Your Clutch

The key to maintaining your clutch is knowing when to adjust it. Monitor the force necessary to engage your clutch. If the pressure require to engage it drops 10-15%, your facings are wearing and your PTO needs adjustment.

How to Monitor Engagement Force

Recently, Foley field service people have developed an easy method to measure engagement force. We weld a socket on to one end of the cross shaft and use a torque wrench. This technique is so simple that it can be done as part of your daily maintenance. The chart below tells you when it is time to adjust your PTO.

How to Adjust Your Clutch

Here are the steps to take: Disengage the clutch, remove the inspection plate and rotate the clutch to gain access to the adjusting ring lock. Then remove the lock bolt and adjustment lock. Rotate the adjusting ring counter clockwise to lighten the clutch. Then adjust to obtain the proper handle engagement force. When done, reposition the locking finger in a slot and tighten the adjustment lock bolt.

Lubricating Your Clutch

Use lithium base #2 grease prior to installation of your PTO. Grease the release bearings (if not sealed), the main bearings (rotate shaft by hand until the grease comes out), and the cross shaft. Once the PTO is installed, follow this schedule below.

Lubrication Schedule

Please call us with any questions about your over center or spring loaded PTO. Foley Engines stocks new and remanufactured units, clutch packs, facings and other maintenance parts. If in doubt about your PTO, call us. We can pick it up for overhaul or adjustment.