Cooling fan motor fitting service - Page 4

Jules · 8th June 2010, 14:37

Hi Tim

Thanks for the feedback in your case!
Even with all fins present I'm finding the condensers are way down on efficiency if:
Over 5 years old
or
Exceeded 90K miles !

I'm trying to put some more data together re the temperature of the HP pipe before and after the Condenser.

As a general guide, if the HP pipe is getting more than luke warm to the feel.
(As felt near the Bonnet diver block) with the cooling Fan running, then it's time expired for the condenser.

My observations after I've fitted a new condenser are that the AC system will run quite happily without the cooling fan running at all for quite a few minutes!! (ambient temp of 20 deg C ) with the HP pipe hardly getting warm at all, which goes to show how effective a good condenser is.

Some temp figures/data to follow.

As regards the 3 speed RPM figures
(I don't know where those other figures come from, but they are not correct)
My belief is the speeds are far closer together .................more like:

Low 1000 RPM
MED 1300 RPM
HIGH 1500 RPM

2 speed OEM Fan:
LOW 600 RPM
HIGH 1500 RPM

Which explains why the LOW speed on the later 2 speed is far quieter than LOW on a 3 speed

3disco · 8th June 2010, 16:36

Quote:

Originally Posted by Jules

Update!
Any motor ordered by Diesel owners will Automatically come with a FREE pair of Viton Intercooler Seals.
(there's nothing more annoying than having the front end stripped down only to find you need something else!! The seals will almost certainly need replacing & is so much easier to do while the slam panel is off!)

Many thanks for the excellent "how to" and the quick delivery of the kenlowe fan,on stripping down the old fan, I found it had completely burnt out,so only just in time,top man.

James.uk · 8th June 2010, 17:18

Ellow Ian.

Did you have to make a hole for the fan to go in?, or (2) had one been made and supplied with the fan by Jules? orrr (3) did the new one fit in the hole left by the old one?

Had you let me know in advance you were making said purchase, I could have made you a hole for it, if indeed one was required. I know it would have meant a largish box to send it in, But I already have several large boxes that now I have removed their contents, would easily have accommodated the aforementioned hole. In fact I could have fitted a spare hole in as well for future use, if I laid one upon the other..

PS.. nice to see Jules is alive and well and sending out goodies..

PSS. For those of you who didn't know, 3Disco = Ian. Was the kind gentlman who sent me 4 holes to fit my new rear parking sensors in..

..
...

8th June 2010, 14:37	#31
Jules This is my second home ZT 260 SE Twilight and 10 other 75 ZT's :O Join Date: Jan 2007 Location: Conwy NORTH WALES Posts: 11,094 Thanks: 512 Thanked 1,116 Times in 763 Posts	Hi Tim Thanks for the feedback in your case! Even with all fins present I'm finding the condensers are way down on efficiency if: Over 5 years old or Exceeded 90K miles ! I'm trying to put some more data together re the temperature of the HP pipe before and after the Condenser. As a general guide, if the HP pipe is getting more than luke warm to the feel. (As felt near the Bonnet diver block) with the cooling Fan running, then it's time expired for the condenser. My observations after I've fitted a new condenser are that the AC system will run quite happily without the cooling fan running at all for quite a few minutes!! (ambient temp of 20 deg C ) with the HP pipe hardly getting warm at all, which goes to show how effective a good condenser is. Some temp figures/data to follow. As regards the 3 speed RPM figures (I don't know where those other figures come from, but they are not correct) My belief is the speeds are far closer together .................more like: Low 1000 RPM MED 1300 RPM HIGH 1500 RPM 2 speed OEM Fan: LOW 600 RPM HIGH 1500 RPM Which explains why the LOW speed on the later 2 speed is far quieter than LOW on a 3 speed __________________ [SIGPIC][/SIGPIC] Newbies do now!! 1. Plenum drains..all 3 or 4 year dependent 2. Cooling fan..All speeds functioning 3. Bonnet cable divider block

8th June 2010, 17:18	#33
James.uk Passed Away 2002 Pale Blue. Rover 75 CDTi Connoisseur auto. 170K miles Join Date: Dec 2008 Location: Near the M67. Posts: 14,509 Thanks: 199 Thanked 585 Times in 397 Posts	Ellow Ian. Did you have to make a hole for the fan to go in?, or (2) had one been made and supplied with the fan by Jules? orrr (3) did the new one fit in the hole left by the old one? Had you let me know in advance you were making said purchase, I could have made you a hole for it, if indeed one was required. I know it would have meant a largish box to send it in, But I already have several large boxes that now I have removed their contents, would easily have accommodated the aforementioned hole. In fact I could have fitted a spare hole in as well for future use, if I laid one upon the other.. PS.. nice to see Jules is alive and well and sending out goodies.. PSS. For those of you who didn't know, 3Disco = Ian. Was the kind gentlman who sent me 4 holes to fit my new rear parking sensors in.. .. ... Last edited by James.uk; 8th June 2010 at 17:39..