Australian 4WD Action – August 2019

Start off by finding a good radiator flush. We used Nulon in this

case and followed the directions on the bottle. For this particular

one, we drained enough water out of the radiator to add the

Nulon radiator flush and put the cap back on. Start it up and turn

the heater on full heat to flush the heater core, too.

Run it for 20 minutes and make sure it’s up to temp and the

thermostat has opened. You can check by carefully feeling both

main radiator hoses – they should be the same temp, and fully

hot. Once the thermostat has opened, turn off the engine and

let it cool down until it’s just warm and drain all the coolant.

With all the coolant drained out, pull the thermostat housing

off along with the thermostat (take note of how the thermostat

was sitting in the housing), using a garden hose and fresh clean

water, reverse flush the excess coolant and crud remaining in

the block and heater core.

Remove the radiator from the engine bay by first disconnecting the

fan shroud then unbolting the supports for the radiator. This will

vary depending on which vehicle you own. For example, on 80 Series

Cruisers its quite a time consuming process, but on a GU Patrol its a

few bolts and the shroud. Take care not to damage the shroud as you

remove it as it’s critical for allowing even air flow to move through

the core of the radiator. We’re also replacing the viscous fan hub too.

Before bolting the clutch fan back it’s a good idea to change the belts

and even the fan belt pulley, whilst everything’s so easily accessible.

Preventive maintenance on simple things like these are piece of mind

out in the scrub, and you can keep the old belts and pulley as a spare

to get you out of trouble. If you’re not replacing your belts or fan/ hub

assembly, while you have access to it all it’s a smart idea to inspect all

the components thoroughly to ensure proper operation.

FLUSHING THE SYSTEM

REMOVING THE OLD RADIATOR

+ REPLACING BELTS

OVER^5

, 000

PRODU

CTS

INSTORE^ OR^

ONLINE 4WA300

ONLINE OR INSTORE!

UNIQUE PROMO CODE

http://www.machineryhouse.com.au Valid until 30-09-19

2

1

If your belts look like

this, replace them!

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