SAFARI

486 PL ENGINE

RADIATOR :

CLEANING :

Fit radiator cap, close radiator drain cock firmly.

Place radiator upside down on ground

Connect water supply line to radiator bottom tank

at its outlet.

Slowly increase water supply to radiator. Maximum

pressure in system should not exceed 1.5 bar.

Continue water flow till outlet water is visually clean

and clear.

Remove connections made for cleaning.

Remove radiator cap and suitably plug inlet and

outlet of radiator.

Completely fill radiator with measured quantity of

water. If radiator capacity is less than specified, it

reflects chocked tube.

Re-clean/de-scale radiator using suitable cleaning

compounds as per manufacturer’s instructions.

Fit back radiator cap.

Blow compressed air through radiator fins from

engine side to clean air passages.

Do not brush or scrape radiator core in any way.

TESTING :

Remove radiator cap.

Suitably plug radiator inlet, outlet and filling neck.

Remove radiator drain cock adapter.

With suitable adopter connect pressurised air

supply to radiator drain cock hole.

Submerge radiator in water tank.

Admit air at 1.5 bar (max) into radiator.

Check for leaks and if any suitably mark them.

Take out radiator from water tank

Disconnect air supply connections.

Remove all plugs. Rectify leaks by soldering.

Recheck radiator for leakage.

Fit back radiator drain cock adapter.

Fit back radiator cap.

INSTRUCTION FOR SOLDERING :

Use 40% tin content solder. This solder has higher

tin content and hence lower melting temperature than

used in manufacture of radiator; hence is safe for

any effect in original soldering nearby.

Use non corrosive fluxes for soldering. Neutralize

and wash residues to avoid any consequent damage.

CAUTION :

Acid should not be used for the above purpose.

CHECKING CAP

Fig. 117

Check radiator cap for perfect seating in filler neck.

Check radiator cap for

pressure valve opening

vacuum valve opening.

Important : Replace defective cap with new one of

recommended rating.

Fig. 117

(VACUUM VALVE)

Pressure valve opening

pressure 1.0 kg/cm

(gauge)

Vacuum valve opening

Pressure 0.05 kg/cm

Max.