Go Back   The 75 and ZT Owners Club Forums > The 75 and ZT Owners Club Forums > Technical Help Forum
Register FAQ Image Gallery Members List Calendar Mark Forums Read
Notices

Reply
 
Thread Tools Display Modes
Old 7th June 2019, 07:36   #61
SD1too
Doesn't do things by halves
 
SD1too's Avatar
 
Rover 75 2.5 Connoisseur Auto (1999) Dealer launch model.

Join Date: Mar 2007
Location: Former Middlesex
Posts: 20,262
Thanks: 1,587
Thanked 3,749 Times in 3,181 Posts
Default

Phil,

Quote:
Originally Posted by stocktake View Post
Your next step is to repair/replace the fan, so its a bumper off job.

Then you need to identify the type of fan.


Simon
__________________
"Whatever is rightly done, however humble, is noble."
Sir Henry Royce.
SD1too is offline   Reply With Quote
Old 17th June 2019, 14:55   #62
chillyphil
Gets stuck in
 
MGZT-T

Join Date: Oct 2014
Location: Paignton
Posts: 617
Thanks: 278
Thanked 90 Times in 72 Posts
Default

Thanks Simon & Dave,

Managed to get an hour today to get the bumper off.

Looks like a 3 speed fan.

Question is, should I repair or replace?
If I replace should I fit 3 speed or 2 speed?

I could also do with a bit of a guide on removal.
I've taken off the bumper and inner alloy bumper.
I've removed the fan blades from the moulding.

What else do I need to remove to get the fan out?

Also a couple of other points:
1... The metal hose fron the air intake has com adrift, looks like it may be a b***ch to refit, not a lot of free movement and material is quite stiff, are there replacements available?
2... a loop of what looks like black 10mm Pipe comes across the lower part of the rad from the nearside, loops around and returns, the offside bracket is broken so the pipe wobbles about a bit, is this an issue and is the bracket available to replace?
3... The foam liner attached to the inside of the bumper looks a bit chewed up and held together with tape, is this replaceable?
4.. Another smaller issue, the headlights have water ingress whenever and however I wash the car, it sorts itself out after a few days, but is there a remedy for this?
5.. Whilst all this is off, what else should I do. Any upgrades or bits I should replace, I've already got new xenons and halos from Rick.

Sorry for all the extra questions, but may as well get things done whilst the bumpers off.

Phil
chillyphil is offline   Reply With Quote
Old 17th June 2019, 15:27   #63
vitesse
I really should get out more.......
 
Rover 75 Saloon

Join Date: Jul 2011
Location: Gävle
Posts: 2,515
Thanks: 395
Thanked 823 Times in 652 Posts
Default

The whole headlamp panel needs to be removed along with the bonnet catches and cooler pipework. Remove the two clips from under the fan cowling, and the small (8mm?) bolts halfway up the cowling, great if you can soak them first. Without cutting or working on the AC pipes remove the top of the cowling (black plastic) from the righthand side (as you’re looking at it). Pivot and ease outwards towards you the righthand side of the cowling enough to access the torx screws holding the fan motor (again soak first), these are usually difficult to remove. Once the three torx are out, pull the fan motor towards you and feed through the wiring and control box.

Once the fan motor is out open it up and see the condition. If the commutator is in reasonable condition you might only have to replace one or two carbon brushes, I’m sure Simon will advise on a supplier.

Regards
vitesse is offline   Reply With Quote
Old 17th June 2019, 18:26   #64
T-Cut
This is my second home
 
Rover75 and Mreg Corsa.

Join Date: Nov 2006
Location: Sumweer onat mote o'dust (Sagin)
Posts: 21,751
Thanks: 341
Thanked 3,660 Times in 2,924 Posts
Default

Quote:
Originally Posted by chillyphil View Post
What else do I need to remove to get the fan out?
You follow something like this: https://the75andztclub.co.uk/forum/s...ad.php?t=86328

That's a diesel, but everything you'll need to know is the same.

Note that fitting a new fan system without an aircon depressurisation/recovery operation, you'll have to cut an access through the fan frame for the aircon pipes. Most people do that. It's relatively easy and has negigible effect on the fan frame. Get a second hand 2-speed if you can. Or try replacing the brushes in the old motor. There are HowTos covering alll this stuff. Shout if you any links.

TC
T-Cut is offline   Reply With Quote
Old 17th June 2019, 18:35   #65
vitesse
I really should get out more.......
 
Rover 75 Saloon

Join Date: Jul 2011
Location: Gävle
Posts: 2,515
Thanks: 395
Thanked 823 Times in 652 Posts
Default

T-cut, as I posted above it is possible to access the fan motor without any cutting. Done quite a few now without cutting and while there's not much room there's enough to access the torx screws.

Regards
vitesse is offline   Reply With Quote
Old 17th June 2019, 19:46   #66
T-Cut
This is my second home
 
Rover75 and Mreg Corsa.

Join Date: Nov 2006
Location: Sumweer onat mote o'dust (Sagin)
Posts: 21,751
Thanks: 341
Thanked 3,660 Times in 2,924 Posts
Default

@vitesse
Indeed so. But if you have to replace the complete fan assembly, you need access behind the aircon pipes.

TC
T-Cut is offline   Reply With Quote
Old 17th June 2019, 21:06   #67
vitesse
I really should get out more.......
 
Rover 75 Saloon

Join Date: Jul 2011
Location: Gävle
Posts: 2,515
Thanks: 395
Thanked 823 Times in 652 Posts
Default

OK, I see now the whole cowling, although it depends on what you understand to be "a new fan system".

Just advising the OP that to remove his old 3 speed fan, or fit a replacement fan he doesn't need to cut anything.

I cut the first time I tried removing a fan motor, and then quickly discovered there was no need, and ever since found enough space to free the three torx screws without surgery.

Regards
vitesse is offline   Reply With Quote
Old 17th June 2019, 21:32   #68
SD1too
Doesn't do things by halves
 
SD1too's Avatar
 
Rover 75 2.5 Connoisseur Auto (1999) Dealer launch model.

Join Date: Mar 2007
Location: Former Middlesex
Posts: 20,262
Thanks: 1,587
Thanked 3,749 Times in 3,181 Posts
Default

Quote:
Originally Posted by chillyphil View Post
The fan cycles on and off on demist and air con calls.
Quote:
Originally Posted by chillyphil View Post
Looks like a 3 speed fan.
OK, so you've got four wires entering the motor housing, yes?
Quote:
Question is, should I repair or replace?
Repair, if you can.

Quote:
Originally Posted by vitesse View Post
If the commutator is in reasonable condition you might only have to replace one or two carbon brushes, I’m sure Simon will advise on a supplier.

Since Phil has reported that the motor is cycling on and off, that suggests that the commutator is serviceable and that the slow speed supply brush has worn to minimum length.
Phil; here's your supplier of new motor brushes. Ignore the word 'heater', they are for the radiator motor and the specification was drawn up after consultation with me and club member Greeners. I have them in my own car's fan motor.

Quote:
Originally Posted by vitesse View Post
Just advising the OP that ... he doesn't need to cut anything.

Yes, I have a KV6 2.5 litre too and with careful manoeuvring the plastic mouldings can remain intact.

Simon
__________________
"Whatever is rightly done, however humble, is noble."
Sir Henry Royce.
SD1too is offline   Reply With Quote
Old 17th June 2019, 21:42   #69
chillyphil
Gets stuck in
 
MGZT-T

Join Date: Oct 2014
Location: Paignton
Posts: 617
Thanks: 278
Thanked 90 Times in 72 Posts
Default

Thanks Simon and everyone else,
It is a four wire 3 speed.

As I'm replacing the brushes should I do all four, or just the two low speed?

Phil
chillyphil is offline   Reply With Quote
Old 18th June 2019, 07:28   #70
vitesse
I really should get out more.......
 
Rover 75 Saloon

Join Date: Jul 2011
Location: Gävle
Posts: 2,515
Thanks: 395
Thanked 823 Times in 652 Posts
Default

You’ll see the state of the brushes once you’re in there. I’ve never needed to replace more than two, but unfortunately Simon’s preferred supplier (unlike the other one) will only supply a full set of four.

Unless you have a gas powered soldering device or similar, crimping is the recommended method of attaching new brushes.

Regards
vitesse is offline   Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT. The time now is 08:29.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
Copyright © 2006-2023, The Rover 75 & MG ZT Owners Club Ltd