DE-STA-CO PN500 User Manual
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SECTION 7: Troubleshooting
TROUBLESHOOTING GUIDE
Symptom
Cause
Solution
Backlash at output shaft
Worn/damaged followers
Replace
(in dwell)
Tight Stations
Bent cam followers
Replace; inspect holes in roller
(torque required to rotate
gear shaft
cam shaft through tight
station is more than 1 1/2
times the loose station)
Pitting of cam follower outer race/
Incorrect oil
Replace cam followers and fill
cam track surface
unit with correct oil
Fine magnetic metallic particles
Steel and iron worn from
Flush out when replacing oil
in oil; appear bronze color
bearing roller ends and cages
when in oil
(this is a normal condition)
REDUCER:
Excessive Backlash
A. End play in worm shaft
Contact Technical Services at
800-645-5207 or 847-459-5200
B. Loose gear on camshaft
Contact Technical Services at
800-645-5207 or 847-459-5200
Overheating in Excess of 210°F
A. Worm shaft bearing preload
Contact Technical Services at
800-645-5207 or 847-459-5200
B. Incorrect alignment of worm
Contact Technical Services at
and gear
800-645-5207 or 847-459-5200
C. Excessive worm speed
Reduce worm speed