2001 LAND ROVER FREELANDER Workshop Manual

CORROSION PREVENTION AND SEALING
77-4-2 CORROSION PREVENTION
Key to Figure, cavity wax treatment
areas and injection holes - 3 door
1Injection hole for inner sill
2Injection hole for area between tail door outer
panel and reinforcing panel
3Tail door inner panel
4Tail door reinforcing panel
5Tail door outer panel
6Injection hole for sill

CORROSION PREVENTION AND SEALING
CORROSION PREVENTION 77-4-3
Sill cavity wax injection holes - 5 door
1Injection hole for inner sill
2Rear injection hole for sill
3Front injection hole for sill

CORROSION PREVENTION AND SEALING
77-4-4 CORROSION PREVENTION
Door cavity wax treatment areas and
injection hole - 5 door
All areas symmetrically opposite to those shown are also treated.
Key to figure, door cavity wax treatment - 5 door
1Injection hole for area between tail door outer
panel and reinforcing panel
2Tail door inner panel3Tail door reinforcing panel
4Tail door outer panel

CORROSION PREVENTION AND SEALING
CORROSION PREVENTION 77-4-5
Corrosion Prevention
The following information details Corrosion Prevention treatments.
Factory treatments
During production, vehicle bodies are treated with the following anti-corrosion materials:
lAn application of cavity wax which is sprayed into the sill panels and the lower areas of the door panels.
lA PVC-based underbody sealer which is sprayed onto the underside of the main floor and sills, the exterior of
the safe well and the forward face of the lower dash crossmember.
lA coating of underbody wax which is applied to the entire underbody inboard of the sill vertical flanges, and
covers all moving and flexible components EXCEPT for wheels, tyres, brakes and exhaust.
lA coat of protective wax applied to the engine bay area.
Whenever body repairs are carried out, ensure the anti-corrosion materials in the affected area are repaired or
renewed as necessary using the approved materials.
Cavity wax injection
Areas treated with cavity wax are shown in the following Figures. After repairs, always re-treat these areas with an
approved cavity wax. In addition, treat all interior surfaces which have been disturbed during repairs whether they
have been treated in production or not. This includes all box members, cavities and door interiors. It is permissible to
drill extra holes for access where necessary, provided these are not positioned in load-bearing members. Ensure that
such holes are treated with a suitable zinc rich primer, brushed with wax and then sealed with a rubber grommet.
Before wax injection, ensure that the cavity to be treated is free from any contamination or foreign matter. Where
necessary, clear out any debris using compressed air.
Ensure that cavity wax is applied AFTER the final paint process and BEFORE refitting any trim components.
During application, ensure that the wax covers all flange and seam areas and that it is adequately applied to all
repaired areas of both new and existing panels.
It should be noted that new panel assemblies and complete body shells are supplied without wax injection treatment.
Ensure that such treatment is carried out after repairs.
Effective cavity wax protection is vital. Always observe the following points:
lComplete all paint refinish operations before wax application.
lClean body panel areas and blow-clean cavities if necessary, before treatment.
lMaintain a temperature of 18°C during application and drying.
lCheck the spray pattern of injection equipment.
lMask off all areas not to be wax coated and which could be contaminated by wax overspray.
lRemove body fixings, such as seat belt retractors, if contamination is at all likely.
lMove door glasses to fully closed position before treating door interiors.
lTreat body areas normally covered by trim before refitting items.
lCheck that body and door drain holes are clear after the protective wax has dried.
lKeep all equipment clean, especially wax injection nozzles.

CORROSION PREVENTION AND SEALING
SEALING 77-4-7
SEALING
Underbody sealer treatment areas
M77 1926
B-BA-A
A
A
B
B

CORROSION PREVENTION AND SEALING
77-4-8 SEALING
Underbody sealer
Underfloor areas and sill outer panels are treated with a Plastisol PVC underbody sealer. This material is not suitable
for re-treatment. When repairing areas of underbody sealer, strip the factory-applied underbody sealer back to a
suitable break point. Ensure that a clean metal surface is exposed and that the edge of the existing sealer adheres
soundly to the panel.
Apply new underbody sealer between primer and surfacer paint operations. Apply seam sealer as necessary before
application of underbody sealer. Ensure that blanking plugs and grommets in the floor pan (except those used for wax
injection) are fitted before underbody sealer application. Refit any heat-fusible plugs which have been disturbed in
repair with the aid of a hot air blower, or replace with rubber grommets.
caut : Ensure that suspension units, wheels, tyres, power unit, driveshafts, exhaust and brakes (including all mounting
points) are shielded prior to application of fresh underbody sealer.
Underbody wax
The underbody wax must be reinstated following all repairs affecting floor panels. The wax is applied over paints and
underbody sealers.
caut : Remove old underbody wax completely from a zone extending at least 200mm beyond the area where new
underbody sealer is to be applied.
Engine bay wax
Reinstate all protective engine bay wax disturbed during repairs using an approved material.
Where repairs have involved replacement of engine bay panels, treat the entire engine compartment including all
components, clips and other fixtures with an approved underbonnet lacquer or wax.
Precautions during body repairs and handling
Take care when handling the vehicle in the workshop. Underbody sealers, seam sealers, underbody wax and body
panels may be damaged if the vehicle is carelessly lifted.
Proprietary anti-corrosion treatments
The application of proprietary anti-corrosion treatments in addition to the factory-applied treatment could invalidate
the Corrosion Warranty and should be discouraged. This does not apply to approved, compatible, preservative waxes
which may be applied on top of existing coatings.
Fitting approved accessories
When fitting accessories ensure that the vehicle's corrosion protection is not affected, either by breaking the protective
coating or by introducing a moisture trap.
Do not screw self-tapping screws directly into body panels. Fit suitable plastic inserts to the panel beforehand. Always
ensure that the edges of holes drilled into panels, chassis members and other body parts are protected with a suitable
zinc rich or acid etch primer, and follow with a protective wax coating brushed onto the surrounding area.
Do not attach painted metal surfaces of any accessory directly to the vehicle's bodywork unless suitably protected.
Where metal faces are bolted together always interpose a suitable interface material such as weldable zinc rich
primer, extruded strip, or zinc tape.
Steam cleaning and dewaxing
Due to the high temperatures generated by steam cleaning equipment, there is a risk that certain trim components
could be damaged and some adhesives and corrosion prevention materials softened or liquified.
Adjust the equipment so that the nozzle temperature does not exceed 90°C (194°F). Take care not to allow the steam
jet to dwell on one area, and keep the nozzle at least 300mm from panel surfaces.
DO NOT remove wax or lacquer from underbody or underbonnet areas during repairs. Should it be necessary to
steam clean these areas, apply a new coating of wax or underbody protection as soon as possible.

CORROSION PREVENTION AND SEALING
SEALING 77-4-9
Inspections during maintenance servicing
It is a requirement of the Corrosion Warranty that the vehicle body is checked for corrosion by an authorised Land
Rover Dealer at least once a year, to ensure that the factory-applied protection remains effective.
Service Job Sheets include the following operations to check bodywork for corrosion:
lWith the vehicle on a lift, carry out visual check of underbody sealer for damage.
lWith the vehicle lowered, inspect exterior paintwork for damage and body panels for corrosion.
The vehicle must be washed and free from deposits prior to inspection. It is part of the owner's responsibility to ensure
that the vehicle is kept free of accumulations of mud which could accelerate the onset of corrosion. It will be necessary
for the vehicle to be washed by the Dealer prior to inspection of bodywork if the customer has offered the vehicle in
a dirty condition. Particular attention should be paid to areas where access is difficult.
The checks described above are intended to be visual only. It is not intended that the operator should remove trim
panels, finishers, rubbing strips or sound-deadening materials when checking the vehicle for corrosion and paint
damage.
With the vehicle on a lift, and using an inspection or spot lamp, visually check for the following:
lCorrosion damage and damaged paintwork, condition of underbody sealer on front and rear lower panels, sills
and wheel arches.
lDamage to underbody sealer. Corrosion in areas adjacent to suspension mountings and fuel tank fixings.
The presence of small blisters in underbody sealer is acceptable, providing they do not expose bare metal.
Pay special attention to signs of damage caused to panels or corrosion protection material by incorrect jack
positioning.
caut : It is essential to follow the correct jacking and lifting procedures.
With the vehicle lowered, visually check for evidence of damage and corrosion on all visible painted areas, in
particular the following:
lFront edge of bonnet.
lVisible flanges in engine compartment.
lLower body and door panels.
Rectify any bodywork damage or evidence of corrosion found during inspection as soon as is practicable, both to
minimise the extent of the damage and to ensure the long term effectiveness of the factory-applied corrosion
prevention treatment. Where the cost of rectification work is the owner's responsibility, the Dealer must advise the
owner and endorse the relevant documentation accordingly.
Where corrosion has become evident and is emanating from beneath a removable component (e.g. trim panel,
window glass, seat etc.), remove the component as required to permit effective rectification.