DE-STA-CO PN500 User Manual

Page 29

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27

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

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