Aerospace HAD

Product Information

General Information

WARNING

Risk of Property Damage or Severe Injury

Ensure that you read, understand and follow all instructions before operating the tool. Failure to follow all the instructions may result in electric shock, fire, property damage and/or severe bodily injury.

  • Read all Safety Information delivered together with the different parts of the system.

  • Read all Product Instructions for installation, operation and maintenance of the different parts of the system.

  • Read all locally legislated safety regulations regarding the system and parts thereof.

  • Save all Safety Information and instructions for future reference.

In this Section

Safety Signal Words

The safety signal words Danger, Warning, Caution, and Notice have the following meanings:

DANGER

DANGER indicates a hazardous situation which, if not avoided, will result in death or serious injury.

WARNING

WARNING indicates a hazardous situation which, if not avoided, could result in death or serious injury.

CAUTION

CAUTION, used with the safety alert symbol, indicates a hazardous situation which, if not avoided, could result in minor or moderate injury.

NOTICE

NOTICE is used to address practices not related to personal injury.

Country of Origin

For the Country of Origin, please refer to the information on the product label.

Overview

System Description

The Hold and Drive (HAD) system is used for tightening and loosening of nuts.

The tightening operation is controlled by a separate drive unit to which the system is fitted.

The modular structure of the system allows for a wide range of configurations available for different HAD applications and sizes.

System Components

The HAD system is made up of the following components:

HAD System Components

Position

Component

Function

1

HAD socket

Different socket sizes & lengths are available to fit all types of aerospace applications.

2

HAD system

Holds the bit and are available in different lengths to match the socket.

3

Bit

Replaceable bit available in different sizes to hold the fastener during tightening.

4

Locking nut

Nut for attaching the HAD socket to the angle head.

Installation

Installation Instructions

Functional Test

Perform a functional test before the first tightening operation, and after any performed maintenance activities.

To perform a functional test:

  1. Manually rotate the output gear wheel. It must rotate smoothly.

  2. Push the bit upwards, it must move easily.

  3. Lubricate the system.

Assembling Instructions

Assembling the HAD system

  1. Add a small amount of grease (Molykote EM-30L) and place the ball into the tapered hole on the side on the side bit holder.

  2. Place the release ring on the bit holder by sliding it on from the top.

  3. Place the spring on the bit holder by sliding it on from the top.

    If two springs are included

    1. Place the short spring on the bit holder by sliding it on from the top.

    2. Place the locking rings in the grooves on the bit holder.

    3. Place the long spring on the bit holder by sliding it on from the top.

  4. Add the bit by lifting the release ring, pushing in the bit and releasing the ring.

Assembling the HAD system to the driving tool or quick change angle head

  1. Remove the locking nut from the angle head

  2. Brush grease (Molykote EM-30L) on the two flat surfaces on the bit holder.

  3. Insert the HAD system, place the top washer on the top of the bit holder and secure it with the M2 screw.

  4. Insert the HAD socket and secure it with the locking nut from the angle head.

    Use the flat sides of the bevel gear as a counter hold when tightening.

  5. Check that the completed assembly have a small gap between the top washer and the angle head.

Operation

Operating Instructions

Operating the HAD System

WARNING

Risk of Injury

If the system moves around unexpectedly, or if reactive forces are absorbed incorrectly, it can lead to severe injuries and property damage.

  • Always check that the system is placed correctly on the head of the nut.

Bending on socket will reduce installed torque for all models.

If the operator puts a bending load on the socket (for example by not holding the tool weight, and letting the tool hang on the screw head) it will reduce the installed torque level. Even though the tool measures and reports a correct torque, the joint will not be properly tightened. This effect is more sensitive at low target torques.

Service

Maintenance Instructions

Service Instructions and Intervals

For information about service instructions and intervals, refer to the Product Instructions for the driving tool.

Changing a HAD System Socket Bit

  1. Lift the release ring upwards using a small screwdriver placed in the holes of the socket.

  2. While holding the release ring in the upper position pull the bit downwards to remove the bit.

    CAUTION

    Cutting Hazard

    Damaged bits can cut and cause injuries.

    • Handle damaged bits with care.

Recycling

Environmental Regulations

When a product has served its purpose it has to be recycled properly. Dismantle the product and recycle the components in accordance with local legislation.

Batteries shall be taken care of by your national battery recovery organization.