# Service Instructions

Service must only be carried out by qualified personnel who have access to the Service instruction and/or have been trained for service on Tensor tools. If the tool is not working properly, it should immediately be taken away for inspection.

## Complete tool

Overhaul and preventive maintenance of the complete tool is recommended at regular intervals, once per year or after 250,000 tightening’s depending on which occurs sooner.

## Gear

Overhaul and preventive maintenance of the gear is recommended at regular intervals, once per year or after a maximum of 250,000 tightening's depending on which occurs sooner. More frequent overhaul may be needed if used at high cycle rate or long tightening times.

Service of gear

1. Take grease from each gear step and smear it on a white paper.​

2. Check the grease, if metallic chips are visible it is a sign of abrasion in the gear step.

3. Clean all parts in the gear thoroughly.​

4. Check the parts.

   1. Check needle bearings and replace if they are not flush to surface or damaged.

   2. Check cogs and replace cogs or gear set if damaged.

   3. Check O-rings and replace if O-rings are cracked.

5. Add grease and assemble all parts.