dhse cooling/bleeding

enery8 · Apr 20, 2011

I have a Kenlowe fan to fit but I a reluctant to disturb the cooling system. I need to remove a viscous unit and replace it with the Kenlowe but can I do that without disconnecting the water system? If not, how do I make sure I bleed the cooling system properly so as not to create overheating?

jonbill · Apr 20, 2011

the viscous unit should just unscrew (sharp clockwise tap on the spanner i think). You shouldn't need to disconnect any hoses.

Datatek · Apr 20, 2011

You need to remove the shroud, to remove the shroud, you need to remove the hoses, there isn't room to get the fan out otherwise. If your Kenlowe fits on the back of the rad, you may not need to re fit the shroud. Bleeding is a pain, I found it better if the drivers side front of the car is raised, it aids bleeding. Squeeze and release the hoses rapidly to aid expulsion of air.

enery8 · Apr 20, 2011

Thanks chaps. Apparently the shroud does not need to be re-fitted, but I must admit I am concerned about bleeding the system. I had problems with my old classic Rangie with air in the cooling system, a right bar steward to shift. Still, I am committed now, I bought the fan - now I gotta fit it. Otherwise I might just get in trouble with she who must be obeyed

6704nathan · Apr 21, 2011

wish i had known just removed a kenlowe fan kit from mine and refitted a new genuine viscous fan i was never that impressed with it!
and a note never noticed any improvement in fuel economy either maybe 0.3 of a mpg on the display!

Datatek · Apr 21, 2011

6704nathan said:
wish i had known just removed a kenlowe fan kit from mine and refitted a new genuine viscous fan i was never that impressed with it!
and a note never noticed any improvement in fuel economy either maybe 0.3 of a mpg on the display!

Improvements are most noticable in winter with quicker warm up, the car is also quieter.

enery8 · Apr 21, 2011

6704nathan said:
wish i had known just removed a kenlowe fan kit from mine and refitted a new genuine viscous fan i was never that impressed with it!
and a note never noticed any improvement in fuel economy either maybe 0.3 of a mpg on the display!

Wish I had known before I bought mine, I only live at Weymouth and have friends at Devizes. Still figuring out how to fit it tho'

jonbill · Apr 21, 2011

maybe cut your losses and stick it on ebay? someone will want it!

modelman · Apr 21, 2011

I fitted a 17" Kenlow to my DSE about 3 years ago, best thing I ever did!!
This was after it blew the top off the radiator whilst towing a large, heavy 2-axle trailer up a steep hill in summer in a traffic-jam!!
The Kenlow was bought with an ajustable stat, plus 2, hi & lo over-ride switches.
The fan NEVER cuts in during 'normal' driving & only rarely in hot weather if towing uphill, I set it to cut-in well before 'hot' on the gauge & when it does, you can see the needle fly down to normal in seconds!! Plus the fact, I can pull it in manually via the 2 dash-mounted swithes.
As for the bleeding, it was a doddle, I simply pulled the hoses, then the fan, the shroud, fitted the capillery tube to the top-hose, re-fitted everything, started it up, filled with coolant with the engine running, & as any air was pumped round the system, bubbles 'popped' into the header-tank, & the throttle was 'blipped' a few times until no more air, then all was buttoned up & shes been running fine for over 3 years now!!
Just check the level for a few days to ensure no air or leaks etc.

KenloweSwitches | Flickr - Photo Sharing!

Datatek · Apr 21, 2011

modelman said:
I fitted a 17" Kenlow to my DSE about 3 years ago, best thing I ever did!!
This was after it blew the top off the radiator whilst towing a large, heavy 2-axle trailer up a steep hill in summer in a traffic-jam!!
The Kenlow was bought with an ajustable stat, plus 2, hi & lo over-ride switches.
The fan NEVER cuts in during 'normal' driving & only rarely in hot weather if towing uphill, I set it to cut-in well before 'hot' on the gauge & when it does, you can see the needle fly down to normal in seconds!! Plus the fact, I can pull it in manually via the 2 dash-mounted swithes.
As for the bleeding, it was a doddle, I simply pulled the hoses, then the fan, the shroud, fitted the capillery tube to the top-hose, re-fitted everything, started it up, filled with coolant with the engine running, & as any air was pumped round the system, bubbles 'popped' into the header-tank, & the throttle was 'blipped' a few times until no more air, then all was buttoned up & shes been running fine for over 3 years now!!
Just check the level for a few days to ensure no air or leaks etc.

KenloweSwitches | Flickr - Photo Sharing!

The existing aircon fans do the same job for a couple of hundred quid less

ginian · Apr 27, 2011

Datatek said:
The existing aircon fans do the same job for a couple of hundred quid less

How does that work?

Datatek · Apr 27, 2011

ginian said:
How does that work?

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dhse cooling/bleeding

enery8

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jonbill

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Datatek

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enery8

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6704nathan

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Datatek

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enery8

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jonbill

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modelman

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Datatek

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ginian

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Datatek

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