# Service and Maintenance Recommendations

Always wear impact-resistant eye and face protection when involved with or near the operation, repair or maintenance of the tool or changing accessories on the tool.

All investigation, maintenance or repair work should only be carried out when the complete system is at zero pressure.

For optimum performance, frequently inspect tool, power pack, hoses, connectors, electric cables, and accessories for visual damage. Always follow instructions for tool and pump maintenance.

## Service Interval Guidance

Trained personnel with correct maintenance schedule can use hydraulic wrenches for many years without problems. However, all tools wear out after long use. Factors that affect the life of tool:

- High cycle rate

- High load use

- Impact

- Operating in dirty, hot or humid environments

- Different reaction methods

- Poor maintenance

Regular lubrication and overhaul is recommended to make sure that the wrench remains in good working order. More frequent service intervals may be needed if used at high torque, high cycle rate or long tightening times. If the wrench is not working properly, immediately take it away for inspection.

The following service intervals are for guidance only. Each use case and application is different, so it is the responsibility of the end user to implement suitable planned maintenance specific to the working environment and usage. Keep a record of tool operation. This record helps to plan for service, calibration, and replacement of tool or components.

## Light Duty

Example: Infrequent use at low pressures, <40% capacity.

- Lubrication: every 6 months

- Overhaul: every 12 months

## Normal Duty

Example: Regular use, <80% capacity.

- Lubrication: every 3 months

- Overhaul: every 12 months, including drive pin replacement. See section Lubrication.

## Heavy Duty

Example: Constant use at any pressure; use >80% Capacity; regular use to loosen corroded bolts.

- Lubrication: every 1 month

- Overhaul: every 6 months, including drive pin and drive pawl replacement. See section Lubrication.