Bühler 45 Series User Manual

                                           

        45 Series Rotary Tiller 

 

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During normal operation, the slip clutch can release and slip when encountering an 
obstruction or when overloaded.  It is designed to slip when the load exceeds 3 times its 
nominal rating.  When the clutch slips too frequently during normal operating conditions, 
it is necessary to  replace the clutch linings.  NOTE:  The PTO shafts are shipped with 
the slip clutch disengaged.  There are four socket set screws on the inside of the clutch 
assembly, which are turned out as far as they go to engage the clutch.  Disengage 
clutch by turni ng set screws in fully. 
 
To replace clutch linings, follow this procedure:        
 
1.   

Disengage the clutch by turning the four set screws all the way in. 

 
2.   

Remove the outside bolts from the clutch assembly and replace the clutch 
linings. 

 
3.   

When re-tightening the bolts, stop when the clutch spacer starts to touch the 
clutch plates.  You should be able to just move the spacer by hand when you 
have the correct bolt torque. 

 
4.   

Engage clutch by turning out set screws after assembly is complete. 

 

 
 
1.    

Before first use or after storage of more than one month, the clutch should be   
checked.                                     

 
2.    

Disengage clutch by turning in the four socket set screws. 

 
3.    

Run the PTO at low idle to slip the clutch linings.  This will help remove the dirt, 
corrosion, and surface gloss from the clutch plates and also ensure that the 
linings are loose. 

 
4.    

Engage the clutch by turning out the socket set screws.                 

 
5.    

Normally the clutch will slip at a 20% higher torque after the “run in” than before. 

 
6.    

Check the temperature of the clutch after running for 20 minutes and every 8 
hours after that.  If the clutch is hot to the touch or smokes, check that the 
outside bolts are correctly tightened as explained in slip clutch section.  If clutch 
still slips, linings may have to be replaced.