Good paintwork starts with preparation, not the paint gun. Dirt, oil, loose rust, old flaking paint and poor repairs must be dealt with before primer and topcoat are applied. A carefully prepared machine will look better and the finish will last much longer.

1. Decide How Far to Strip the Machine

Not every restoration needs a bare-chassis strip.

Possible Levels

• Clean and preserve original paint
• Partial repaint
• Panel-off repaint
• Full mechanical and cosmetic strip-down

The more completely you dismantle the machine, the more important labelling, photographs and parts organisation become.

2. Photograph Before Dismantling

Take photographs of:

• Decal positions
• Wiring routes
• Pipe clips
• Control linkages
• Panel gaps
• Fastener locations
• Original paint breaks and colour boundaries

These images are extremely useful during reassembly.

3. Remove Easily Damaged Parts

Where practical, remove items that will make cleaning or painting difficult.

• Lights
• Badges
• Mirrors
• Seat
• Rubber mats
• Plastic trims
• Decals
• Electrical switches

Do not paint over parts that should remain removable.

4. Degrease Before Sanding

Oil and grease should be removed before abrasive preparation.

If you sand through grease first, contamination can be pushed into scratches and later affect primer adhesion.

Typical Areas

• Engine block
• Gearbox housing
• Rear axle
• Loader frames
• Hydraulic areas

5. Pressure Washing

Pressure washing is useful, but careless use can force water into components.

Avoid Directing High Pressure Into

• Air intakes
• Bearings
• Electrical connectors
• Breathers
• Seals
• Instrument panels

Allow the machine to dry thoroughly before sanding or painting.

6. Remove Loose Paint

Old paint that is firmly bonded may not always need complete removal, but loose or flaking paint must come off.

Methods Include

• Scraping
• Wire brushing
• Mechanical sanding
• Needle scaler
• Media blasting
• Chemical stripping where appropriate

7. Wire Wheels and Abrasive Discs

Useful for brackets, castings and heavy steel.

Use Care

• Do not thin sheet metal excessively
• Avoid rounding sharp edges
• Wear eye protection
• Use guarded tools

Wire fragments can detach at high speed.

8. Media Blasting

Blasting can clean rust and paint quickly.

Good For

• Wheels
• Brackets
• Loader frames
• Heavy panels
• Chassis parts

Take Care With

• Thin sheet metal
• Machined surfaces
• Bearings
• Hydraulic components
• Open engine or transmission parts

Blasting media must not be allowed into engines, gearboxes or hydraulic systems.

9. Rust Removal

Surface rust can often be removed mechanically.

Options

• Wire wheel
• Sanding
• Blasting
• Rust-removal chemical
• Rust converter where suitable

Heavy structural rust may require cutting and welding rather than simply treating the surface.

10. Rust Converters

Rust converter can be useful in pitted areas that cannot be cleaned perfectly.

However:

• Follow the manufacturer’s preparation instructions
• Allow full reaction and curing time
• Confirm compatibility with primer

Do not treat loose scale and expect the converter to make it sound.

11. Repair Corrosion Before Painting

Paint does not restore metal strength.

Repair Properly If You Find

• Holes
• Deep pitting
• Cracked brackets
• Weak cab floors
• Corroded battery trays
• Structural rust

12. Straightening Panels

Before filler and paint, correct dents and distortion as much as possible.

Use suitable:

• Body hammers
• Dollies
• Heat only where appropriate
• Panel clamps

The less filler required, the better.

13. Body Filler

Use filler only over properly prepared sound metal.

Good Practice

• Remove rust first
• Degrease panel
• Apply thin layers
• Shape progressively
• Finish with finer abrasive

Do not use filler to bridge rust holes or weak metal.

14. Protect Machined Surfaces

Do not paint:

• Gasket faces
• Splines
• Shafts
• Bearing surfaces
• Electrical earth points
• Hydraulic coupler faces
• Identification plates

15. Mask Threads and Fittings

Protect:

• Grease nipples
• Hydraulic fittings
• Fuel unions
• Threaded holes
• Stud threads

Paint inside a threaded hole can create assembly problems later.

16. Final Degreasing

Before primer, wipe surfaces with an appropriate panel cleaner or degreaser.

Use clean, lint-free cloths and avoid touching prepared metal with bare oily hands.

17. Bare Metal Should Not Be Left Exposed

Freshly cleaned steel can develop flash rust very quickly, especially in damp conditions.

Prime as soon as practical after final preparation.

18. Choosing a Primer

Possible primer types include:

• Etch primer
• Epoxy primer
• High-build primer
• OEM-compatible industrial primer

Use a system compatible with the intended topcoat.

19. Epoxy Primer

Epoxy primer is widely used on restoration projects because it provides strong adhesion and good corrosion resistance on properly prepared metal.

Follow the correct mixing ratio and recoat window.

20. High-Build Primer

High-build primer helps level sanding marks and minor imperfections.

It is not a substitute for repairing badly damaged or rusted metal.

21. Sanding Primer

Use progressively finer abrasives to produce a smooth surface without deep scratches showing through the finish.

Clean thoroughly between sanding stages.

22. Check Panel Fit Before Topcoat

Trial-fit major panels before final paint if possible.

Check

• Bonnet alignment
• Grille fit
• Door gaps
• Wing/fender position
• Bracket alignment

It is better to drill, file and adjust before the final finish is applied.

23. Paint Colour

For an accurate restoration, identify:

• Correct manufacturer colour
• Model-year colour changes
• Wheel colour
• Engine/chassis colour
• Cab and trim colours

Original hidden areas can sometimes provide a useful colour reference.

24. Preserve Original Identification Plates

Serial plates and stamped numbers should normally be preserved rather than painted over.

Mask them carefully and avoid aggressive blasting around them.

25. Decals and Badges

Photograph originals before removal.

Record

• Exact location
• Spacing
• Orientation
• Colour
• Size

Replacement decal kits vary in accuracy.

26. Painting Castings

Engine blocks, gearboxes and axle housings usually require thorough degreasing and removal of loose paint.

Cast surfaces often retain oil in pores, so repeated cleaning may be needed.

27. Painting Wheels

Wheels should be inspected for:

• Cracks
• Severe corrosion
• Damaged bead seats
• Loose centres

Repair structural problems before cosmetic work.

28. Avoid Painting Over Leaks

Repair oil, fuel and coolant leaks before finishing.

Fresh paint over an active leak usually fails quickly and makes later repair messier.

29. Reassembly Protection

Fresh paint is easily damaged during reassembly.

Use

• Masking tape on edges
• Soft cloths
• Protected lifting chains
• Correct sockets and tools

Allow paint enough curing time before bolting parts together.

30. Keep a Paint Record

Write down:

• Paint manufacturer
• Colour code
• Primer type
• Mixing ratio
• Hardener
• Reducer
• Date used

This makes future touch-ups much easier.

Restoration Preparation Checklist

Stage	Check
Documentation	Photos and identification recorded.
Cleaning	Oil, mud and grease removed.
Rust	Loose rust removed and corrosion repaired.
Panels	Dents and structural defects repaired.
Masking	Threads, plates and machined surfaces protected.
Primer	Correct compatible system selected.
Panel fit	Checked before final topcoat.
Paint record	Colour and products recorded.

Related Agrimanual Manuals

Parts catalogues are especially useful during cosmetic restoration because they show the correct arrangement of panels, brackets, badges and fittings.

• Search Agrimanual parts catalogues
• Search Agrimanual tractor workshop manuals
• Request a manual if your machine is not listed

Frequently Asked Questions

Do I need to remove every bit of old paint?

No. Sound, well-adhered paint can often remain if it is properly cleaned, feathered and compatible with the new coating system. Loose or failing paint must be removed.

Should I sand before degreasing?

Degrease first. Sanding through grease can push contamination into the surface.

Is blasting safe for tractor panels?

Yes when done carefully, but excessive pressure or aggressive media can distort thin sheet metal.

Can I paint over rust converter?

Usually only after the converter has fully reacted and cured, and only with a compatible primer. Follow the product instructions.

Should I paint the tractor before mechanical work is finished?

Major mechanical repairs are best completed first. Splitting or dismantling a freshly painted tractor can damage the finish.