Service manual

SYMPTOM: LOOSENESS IN EACH DWELL

1. Camshaft is loose in bearings. Check for end play in input shaft. Adjust shims on bearing caps.

See individual service manual for preload setting procedures.

2. Cam is loose on shaft. Usually repaired at factory.

3. Cam is broken. (This happens very seldom and is an indication of an overload application or a

jam-up).

4. Unit was very heavily overloaded and all bearings loosened up. Rework required.

5. All followers are worn. Rebuilding by factory is best remedy.

6. Output shaft to follower wheel connection is loose. Factory is recommended.

7. Customer output member connection loose. Tighten output member and dowel in place.

SYMPTOM: INDEXER IS NOISY

1. Check if output is backlash-free in dwell.

2. Check for excess looseness in motion. Cam or follower could be broken

3. Is indexer noisy or could it be the reducer?

4. Very often variable speed D.C. controls cause the input to pulsate and create noise. Adjust the

Internal Resistance Compensation within control.

5. Are input and output connections backlash free?

6. Is the unit overloaded? Loads can change over a period of time due to wear.

7. Is the unit support (base) rigid?

8. The unit could be overheated and have loose preload.

9. Is unit with oil? Is oil used consistent with CAMCO specifications? (See Index Driv

SYMPTOM: PREMATURE WEAR ON FOLLOWERS

1. Actual forces on the unit could be greater than calculated due to loose input or output.

2. Lack of oil or wrong oil used

(See Lubrication section of Index Drive Service).

3. Frequent or severe overloads.

4. Improper input systems

(where there is not a constant velocity input)

will cause an erratic

output or excessive output vibration. This will result in forces several times higher than calcu-

lated

(see input recommendations).

5. Defective cam or follower wheel assembly.e Lubrication).