Joints and joint faces

JOINTS AND JOINT FACES

Fit joints dry unless specified otherwise.

• Always use the correct gaskets as specified.
• When jointing compound is used, apply in a thin uniform film to metal surfaces; take care to prevent jointing compound from entering oilways, pipes or blind tapped holes.
• If gaskets and/or jointing compound is recommended for use; remove all traces of old jointing material prior to reassembly. Do not use a tool which will damage the joint faces and smooth out any scratches or burrs using an oil stone. Do not allow dirt or jointing material to enter any tapped holes or enclosed parts.
• Prior to reassembly, blow through any pipes, channels or crevices with compressed air.

LOCKING DEVICES

Tab Washers

CAUTION: Always release locking tabs and fit new locking washers, do not re-use locking tabs. Ensure the new tab washer is the same design as that replaced.

Locking Nuts

Always use a backing spanner when slackening or tightening brake and fuel pipe unions.

Roll Pins

Always fit new roll pins of an interference fit in the hole.

Circlips

Always fit new circlips of the correct size for the groove.

Locking wire

Always fit locking wire of the correct type. Arrange wire so that its tension tends to tighten the bolt heads or nuts to which it is fitted.

Keys and Keyways

• Remove burrs from edges of keyways with a fine file and clean thoroughly before attempting to refit key.
• Clean and inspect key closely; keys are suitable for refitting only if indistinguishable from new, as any indentation may indicate the onset of wear.

Fitting a split pin

CAUTION: Always fit new split-pins of the correct size for the hole in the bolt or stud. Do not slacken nut to enter split-pin.