Jet 719600, Operating Instructions And Parts Manual

24

11.0

  Troubleshooting JWL-1840EVS/DVR Lathes 

11.1

  Electrical and mechanical 

Table 2 

Symptom Possible 

Cause 

Correction 

* 

Motor fails to develop 
full power. 

Power line overloaded.  

Correct overload condition.  

Undersized wires in supply system, or 
extension cord is too long. 

Increase supply wire size. 

Low voltage. 

Request voltage check from power 
company and correct low voltage 
condition. 

Worn motor. 

Replace motor. 

Motor or spindle stalls 
or will not start. 

Excessive cut. 

Reduce depth of cut. 

Worn or broken belt. 

Replace belt. 

Improper cooling of motor. 

Blow out sawdust from motor housing 
fan. 

Worn spindle bearings. Replace 

bearings. 

Worn motor. 

Replace motor. 

Excessive vibration or 
noises. 

Workpiece warped, out of round, has 
major flaw, was improperly prepared for 
turning. 

Correct problem by planing or sawing 
workpiece, or discard entirely and use 
new workpiece.  

Spindle rotation too fast. 

Reduce speed. 

Worn spindle bearings. 

Replace spindle bearings. 

Drive belt misaligned or worn. 

Align belt. Replace if worn. 

Motor mount bolts are loose. 

Tighten bolts. 

Lathe on uneven surface. 

Adjust leveling feet. 

Tools tend to grab or 
dig in. 

Dull tools. 

Keep tools sharp. 

Tool rest set too low. 

Reposition tool rest height.  

Tool rest set too far from workpiece. 

Reposition tool rest closer to workpiece. 

Improper tool being used. 

Use correct tool for operation. 

Headstock moves 
when applying 
pressure with 
Tailstock. 

Locking handle not tight. 

Tighten handle. 

Excessive pressure being applied by 
tailstock.  

Slide headstock to left end, lock firmly, 
then apply pressure to workpiece with 
tailstock. Apply 

only

 sufficient force with 

tailstock to hold workpiece securely in 
place. 

Tailstock moves when 
applying pressure. 

Cam lock nut needs adjusting. 

Tighten cam lock nut. 

Excessive pressure being applied by 
tailstock. (Note: The screw action of the 
tailstock is capable of applying 
excessive pressure to workpiece and 
headstock. Apply only sufficient force by 
tailstock to hold workpiece securely in 
place. Excessive pressure can cause 
damage to machine.) 

Slide tailstock to right side of lathe 
against the stop. Move headstock into 
position and apply pressure to 
workpiece with tailstock. 

Lathe bed and tailstock mating surfaces 
are greasy or oily. 

Remove tailstock and clean surfaces 
with a cleaner/degreaser. Re-apply light 
coat of oil to lathe bed surface. 

Digital readout does 
not work. 

Digital sensor out of position or 
damaged (JWL-1840EVS). 

Open belt access and inspect sensor. 
Reposition or replace.  

* 

WARNING:

  Some corrections may require a qualified electrician.