NANO

174

ENGINE 273 MPFI

Radiator core and plastic tanks are susceptible

to cracking due to impact and deformation.

CAUTION

• Unscrew the mounting screws of fan motor to fan

shroud.

• Remove the fan motor from shroud.

Repair Procedure for Aluminum Radiator

1. Detection of Leakage Spot

• Connect the inlet of the radiator to air supply at

the gauge pressure of 1 bar

• Seal all other outlet points.

• Dip the radiator completely in a clean water tank.

• Tilt the radiator and shake it vigorously to let the

air bubbles trapped at the clinching area to escape.

• Observe carefully for one minute and locate the

source of air leakage on the radiator from the

direction of air bubbles that are coming out of

radiator.

CAUTION

• If the Leakage spot is at radiator core then follow

the procedure given at Sr. No. 1.1 to seal the

leakage.

Do not use the water tank that is used for copper

radiator.

1.1 Sealing the Leakage at Radiator Core

Different procedure of sealing shall be followed for

MINOR and MAJOR leaks in the radiator core. (Refer

and followmanufacturing instructions before carrying

repairs)

Minor Leaks

: Leak spots which are very minor are to

be sealed in following manner.

• Install the radiator on vehicle.

• Pour the contents of ALUMASEAL in the radiator.

• Fill proper quantity of coolant liquid.

• Run the engine in idling speed for 20 minutes

Major Leaks

: Procedure of sealing major leaks in

the radiator is as follows:

• Wash the corewith cleanwater and brush to remove

dirt, dust etc.

• To remove the greasy spot on the core, apply thinner

with cotton swab and take off the grease.

• Dry the core using a dryer (Do not use heating

source)

• Mix adequate quantity of ARALDITE RESIN

(Araldite rapid may be used in place of Araldite

standard for faster drying & curing of seal) and

HARDENER in the ratio of 1:1 and stir it thoroughly

• Apply the mixture immediately at the leakage spot

with the applicator.

• Allow themixture to dry and harden under the shade

at room temperature for 10-12 hour. Silver color

paint may be used for touching up the araldite spots

and impart the aluminum type appearance.

Do not damage the fins during process.

As the Araldite is inflammable do not dry it by using

any heating source.

Proper cleaning of leakage area is must for proper

setting of Araldite or else it will come off.

CAUTION