# 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

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.

## 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 Assembling the Ratchet Link.

## 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 Assembling the Ratchet Link.

## Use in ATEX Zones

Use the Heavy Duty guidelines regardless of duty to greatly reduce the risk of component failure when in use. If the wrench shows signs of malfunction, remove it from the ATEX zone before investigating the cause. DO NOT attempt to repair the wrench in the ATEX zone. Failure to comply with the maintenance recommendations will increase the likelihood of mechanical failure and therefore the chance of mechanical spark generation.

## High Pressure Hose

- Hoses should be disassembled regularly. The fittings and adaptors must be inspected for wear and damage. If wear or damage is found during maintenance, the affected part must be removed and replaced.

- Examine the hoses for traces of oil that will indicate a slow leak on the hose. Pay close attention to the swages on both ends of the hose as these are the most common areas for oil leaks. If a slow leak is discovered, replace the hose.

- Always clean and coil hose after every use. Wipe the hoses with a clean cloth and spray with a suitable rust inhibitor oil such as Shell Ensis or Castrol Rustillo.

- Do not bend hose over obstructions or use the hose to move attached equipment.

- Pressure test the hoses every second year, and replace hose sets after six years.

Relevant Information

- Assembling the Ratchet Link

## Applies to: