Discovery 2. Manual

CORROSION PREVENTION AND SEALING

77-4-14 SEALING

Seam sealer - doors. Seams symmetrically opposite to those shown are also treated. Ensure drain holes in doors are

not blocked by sealant.

A heat cured, PVC based sealant is applied to specific joint seams during factory assembly. This material is not
suitable for service use and, during repair, should be substituted by an approved Seam Sealer.

BODY SEALING MATERIALS, MATERIALS AND APPLICATIONS, Approved materials.

Seams to which seam sealer is applied during factory assembly are detailed in the previous illustrations.

Apply seam sealers after the application of primer and before the application of surfacer and top coat. The seam
sealer must form a continuous bead, with the profile of the bead dependant on the type of seam. If seam sealer is
applied with a brush, take particular care to maintain the required coverage of the seam. Where shaping of the seam
sealer is required, use a cloth soaked with solvent such as white spirit or Shell SBP3 to achieve the required finish.

Ensure that ALL accessible repair seams are sealed following a repair. Damage to a vehicle often flexes areas of the
body remote from the impact. As a result, the seam sealer in these areas may be disturbed by subsequent
straightening and repair operations. Check all seams in the vicinity of the area undergoing repair for evidence of
cracked seam sealer, then clean out as required and apply fresh seam sealer using the following procedure:

Clean the affected seam and re-treat any exposed metal areas with a suitable etch phosphate primer;

Apply appropriate seam sealer as necessary;

Treat affected area with an acid-etch prime (and underbody sealer as applicable);

Apply appropriate colour coat.

Where seams are inaccessible following the reassembly or fitting of components, ensure that a paste-type seam
sealer is applied to such seams. Certain seams also become inaccessible after the completion of panel repairs. In
such instances apply seam sealer and paint before final assembly.

Provided access is adequate, apply seam sealer to both sides of a repair joint. Where access is limited to one side
only (e.g. box sections), treat the affected box member with cavity wax.

M77 1666A

Discovery 2. Manual - part 279