Jet ghd-20 ユーザーズマニュアル

 

16 

Bent drill bit. 

Replace drill bit. 

Worn spindle bearings. 

Replace spindle bearings. 

Excessive drill bit 
runout, or wobble. 

Bit, or chuck not properly installed. 

Reinstall the bit, or chuck properly. 

Quill returns too slow, 
or too fast. 

Spring has improper tension. 

Adjust spring tension. See the Return 
Spring Adjustment section. 

Chuck or arbor does 
not stay in place. 

Dirt, grease, etc on arbor, chuck, or 
spindle. 

Clean all mating surfaces thoroughly 
with a cleaner degreaser. 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 

Replacement parts are listed on the following pages. To order parts or reach our service department, call 
800-274-6848 between 7:00 a.m. and 6:00 p.m. (CST), Monday through Friday. Having the Model 
Number and Serial