Radiator Fan Dead? - Page 4

Sledge · 9th July 2016, 05:56

Awesome, thank you all for this information.

I finally got around to dropping a multimeter across it, with the demister on, I had no 12V at the relay. Feeling frustrated, I packed up and went inside. Suddenly remembered, I still had the 80 A fuse removed.

So finally, Voltage at the red relay wire, no running fan.

I will study this how to over the weekend. Thanks again, I can't convey my appreciation enough.

Sledge · 13th July 2016, 11:24

Sheesh,

I must be in the Stoopid Zone,

can't pry the cover off as shown in images 6 and 7, just seems it's locked solid.

(oh and a few skinned knuckles

)

Arctic · 13th July 2016, 22:49

Quote:

Originally Posted by Sledge

Sheesh,

I must be in the Stoopid Zone,

can't pry the cover off as shown in images 6 and 7, just seems it's locked solid.

(oh and a few skinned knuckles

)

Hi Rod
Make sure you have squashed the lugs together also bent them up straight, then use the edge of the mole grips to squeeze together the lug and the edge of the lid

https://youtu.be/ls1BJGxUoPo

SD1too · 14th July 2016, 08:58

That's a good tip Steve.

I gently tapped mine, but it was enough to crack one of the brittle permanent magnets (the motor still works though).

Simon

Sledge · 15th July 2016, 04:25

Ok,

Finally got the lid off; pics attached.

I'm a bit concerned with the scoring on the commutator. Should I be worried that it's too late?

Hopefully you can view the images, I'm much of a wombat with stuff like this.

https://drive.google.com/folderview?...0k&usp=sharing

Arctic · 15th July 2016, 09:50

Quote:

Originally Posted by Sledge

Ok,

Finally got the lid off; pics attached.

I'm a bit concerned with the scoring on the commutator. Should I be worried that it's too late?

Hopefully you can view the images, I'm much of a wombat with stuff like this.

https://drive.google.com/folderview?...0k&usp=sharing

Hi Rod.
Images/photo can be seen, I have thrown commutators which have been scored like that, I am surprised that the wiring is still in tact best thing you can do is clean it up use a bit of emery paper on the commutator then go from there, i see that all the brushes have taken a battering so the fan must have ran right up to the end of it's capacity.

These are ones i have thrown away airing on the safe side.

Where as this one i would say is salvageable

SD1too · 15th July 2016, 11:04

Excellent advice Steve.

Simon

Sledge · 15th July 2016, 11:34

Thanks again Arctic,

I am concerned about the commutator being salvageable. I've checked the ECP site you guys suggested. Whilst in many cases I have bought parts from Rimmers, when we equate or dollar to your pound it comes in at another 70 bucks. (I've already spent $$ on breather hoses and pressure cap from Rimmers)

A good friend of mine is an electrician and he's done many of these rebuilds. He is located in another part of Australia, but I might explore the option of asking him to repair it. If I go down this route does any one know the spec/dimensions of the brushes? I don't want junk, but I do need to keep an eye on all these costs.

SD1too · 15th July 2016, 19:33

Quote:

Originally Posted by Sledge

... it comes in at another 70 bucks.

A set of four motor brushes posted to Australia costs £35 which I believe equates to $AUS 60. That's a pretty cheap repair if you do it yourself. It's less than I paid in the UK seven years ago!

Quote:

If I go down this route does any one know the spec/dimensions of the brushes?

Yes I do Rod because I was involved, with club member Greeners, in commissioning the remanufacture of these brushes by Engineering Carbon Products Ltd. I sent them an OEM sample and they came up with this:

The material grade is M17 and the dimensions are 4.6 x 9.65 x 23 mm long. The electrical connection is by flexible braid. The face is shaped to make good contact with the commutator.

If you do decide to 'shop around' I should warn you about the poor quality brushes offered on e-bay. Several members have bought these and found that they fail in a very short period of time. My ECP brushes are still in service after 25,000 miles.

Simon

Sledge · 15th July 2016, 22:42

Thanks for the info Simon. I have read of your warning previously.

Perhaps I should clarify a little more.

As the commutator is possibly not salvageable I'm just exploring the logistics of also sending that for refurbishing or replacement, so it's not just the cost of the brushes I'm looking at.

If it were purely that I'd have no problem buying from ECP as I have checked their website. Up until I found my commutator in the condition it is, I would have already purchased them from ECP.

I have also found one of the few businesses that do brushes is actually located here, so on Monday I will take my fan down for a check up.

14th July 2016, 08:58	#34
SD1too Doesn't do things by halves Rover 75 2.5 Connoisseur Auto (1999) Dealer launch model. Join Date: Mar 2007 Location: Former Middlesex Posts: 20,394 Thanks: 1,587 Thanked 3,749 Times in 3,181 Posts	That's a good tip Steve. I gently tapped mine, but it was enough to crack one of the brittle permanent magnets (the motor still works though). Simon __________________ "Whatever is rightly done, however humble, is noble." Sir Henry Royce.

15th July 2016, 11:04	#37
SD1too Doesn't do things by halves Rover 75 2.5 Connoisseur Auto (1999) Dealer launch model. Join Date: Mar 2007 Location: Former Middlesex Posts: 20,394 Thanks: 1,587 Thanked 3,749 Times in 3,181 Posts	Excellent advice Steve. Simon __________________ "Whatever is rightly done, however humble, is noble." Sir Henry Royce.

9th July 2016, 05:56	#31
Sledge Loves to post Rover 75 SE V6 2.5 Join Date: Sep 2013 Location: Durie Hill Posts: 403 Thanks: 28 Thanked 41 Times in 27 Posts	Awesome, thank you all for this information. I finally got around to dropping a multimeter across it, with the demister on, I had no 12V at the relay. Feeling frustrated, I packed up and went inside. Suddenly remembered, I still had the 80 A fuse removed. So finally, Voltage at the red relay wire, no running fan. I will study this how to over the weekend. Thanks again, I can't convey my appreciation enough.

13th July 2016, 11:24	#32
Sledge Loves to post Rover 75 SE V6 2.5 Join Date: Sep 2013 Location: Durie Hill Posts: 403 Thanks: 28 Thanked 41 Times in 27 Posts	Sheesh, I must be in the Stoopid Zone, can't pry the cover off as shown in images 6 and 7, just seems it's locked solid. (oh and a few skinned knuckles )

15th July 2016, 04:25	#35
Sledge Loves to post Rover 75 SE V6 2.5 Join Date: Sep 2013 Location: Durie Hill Posts: 403 Thanks: 28 Thanked 41 Times in 27 Posts	Ok, Finally got the lid off; pics attached. I'm a bit concerned with the scoring on the commutator. Should I be worried that it's too late? Hopefully you can view the images, I'm much of a wombat with stuff like this. https://drive.google.com/folderview?...0k&usp=sharing

15th July 2016, 11:34	#38
Sledge Loves to post Rover 75 SE V6 2.5 Join Date: Sep 2013 Location: Durie Hill Posts: 403 Thanks: 28 Thanked 41 Times in 27 Posts	Thanks again Arctic, I am concerned about the commutator being salvageable. I've checked the ECP site you guys suggested. Whilst in many cases I have bought parts from Rimmers, when we equate or dollar to your pound it comes in at another 70 bucks. (I've already spent $$ on breather hoses and pressure cap from Rimmers) A good friend of mine is an electrician and he's done many of these rebuilds. He is located in another part of Australia, but I might explore the option of asking him to repair it. If I go down this route does any one know the spec/dimensions of the brushes? I don't want junk, but I do need to keep an eye on all these costs.

15th July 2016, 22:42	#40
Sledge Loves to post Rover 75 SE V6 2.5 Join Date: Sep 2013 Location: Durie Hill Posts: 403 Thanks: 28 Thanked 41 Times in 27 Posts	Thanks for the info Simon. I have read of your warning previously. Perhaps I should clarify a little more. As the commutator is possibly not salvageable I'm just exploring the logistics of also sending that for refurbishing or replacement, so it's not just the cost of the brushes I'm looking at. If it were purely that I'd have no problem buying from ECP as I have checked their website. Up until I found my commutator in the condition it is, I would have already purchased them from ECP. I have also found one of the few businesses that do brushes is actually located here, so on Monday I will take my fan down for a check up.