110 V8 Heater Removal

[Tokyo V8]

Evening all!

A quick question please. I need to remove the heater box from my 110 V8 with A/C (huge heater box in the engine bay type). I can see 2 bolts at the top of the box going into the bulkhead and 2 beneath going into the passenger footwell, is it just these 4 screws that hold it in place, i.e. like a 'normal' non A/C heater box?

Anybody removed one of these A/C types and remember how to do it? Seems like the carb elbows might have to come off:confused:?

Any advice appreciated!

Gareth

[LoveMyV8County]

Evening all!

A quick question please. I need to remove the heater box from my 110 V8 with A/C (huge heater box in the engine bay type). I can see 2 bolts at the top of the box going into the bulkhead and 2 beneath going into the passenger footwell, is it just these 4 screws that hold it in place, i.e. like a 'normal' non A/C heater box?

Anybody removed one of these A/C types and remember how to do it? Seems like the carb elbows might have to come off:confused:?

Any advice appreciated!

Gareth

It's been a few years since I took mine out to get the pipes welded up, but from what I remember... yes, I think it's just the 4 bolts you have identified. If hard to remove it might be stuck to the bulkhead by old sealant.

[clive22]

Took mine off recently same bulbous type box

4 bolts inside passenger footwell/firewall held on by slide/spring type captive nuts on wheel arch side - don't loose these otherwise you will need 2 people to re-install.
2 captive bolts at engine bay side of firewall just under bonnet
There may have been one to the guard near the front of the box as well.
Did not remove inlet manifold.
Disconnect wiring via snap fitting

Clive

[Tokyo V8]

LovemyV8county,
Clive22,

Thanks for the fast responses. Just taken a photo of the heater now, is this the same type you guys have? Clive, noted you didn't take the inlet off but can't see how to get it out otherwise...

Any more advice please?
Cheers,

Gareth

[Carslil Jim]

Hi
I have the same model you have, and I am most interested in taking the heater radiator out as I am getting very little warmth these cold days.

I am watching this thread very closely because I have not got, and I have not been able to find, a wiring diagram, or a vacuum tube diagram, and of course I have no doco on the heater-A/C unit, so I am hoping someone who may have these might respond.

Otherwise it is a case of undoing things and seeing what happens. I must say I am tired of removing the air filter and taking those elbows off the carbs!

Jim

[Tokyo V8]

Evening Jim,

I took out my heater box today (4 screws in the passenger footell, 2 on the bulkhead and 1 just in front of the heater motor) and after figuring out that 2 screws that hold the top in place are cunningly concealed below the land rover and warning stickers the unit all came apart quite easily.

The heater matrix just pops out of the cae once the lid is off, if your heater is not working then that is your problem. I'm not particularly super wth the spanners but it was really easy to remove the whole thing, give it a go.

I'm in the process of taking the whole unit apart and am taking notes so will try to put something together to upload. Thing is I'm doing the taking apart in the bathroom while the girlfriend is away so in a bit of a rush, she's back on Monday :)

Gareth

[Carslil Jim]

Hi Gareth,
I assume you have A/C connected. Could you get that top cover off while the A/C was still gassed up?

I solved my immediate problem which was no heat in the cabin, by disconnecting the 2 vacuum taps and replacing them with a manual operation tap from Repco. One of the vacuum taps must not have been working correctly. Never mind, I will just switch it on in the winter and off in the summer.

I will be interested in any more data you put into the forum.

Best regards

Jim

[kaa45]

You'll find the complete workshop manuals here for free download pdf Land Rover Manuals | Landroverweb.com (http://www.landroverweb.com/landrover/pdf-land-rover-manuals/)

Cheers
Danny ;)

[Carslil Jim]

Danny,
Thanks for the suggestion, but these manuals are dated 1984, and they do not have later year supplements, so the 1985 County is not included and it's A/C and heater are quite different.

If you are aware of later manuals please let us know!

Regards

Jim.

[Carslil Jim]

A hero who goes by the handle Clive22 has sent me the instructions for the 85 County A/C and I am happy to share. Clive can definitely claim me for a beer when we meet!

I am still after the vacuum line diagram. It is a mystery especially when some parts are now simply disintegratiing. I have most of it operational through trial and error, but it's one of those things where there are about 6 ports and 5 lines giving 30 combinations or so, to test, and when one flips off...well aaargh!

[Tokyo V8]

Hi Gareth,
I assume you have A/C connected. Could you get that top cover off while the A/C was still gassed up?

I solved my immediate problem which was no heat in the cabin, by disconnecting the 2 vacuum taps and replacing them with a manual operation tap from Repco. One of the vacuum taps must not have been working correctly. Never mind, I will just switch it on in the winter and off in the summer.

I will be interested in any more data you put into the forum.

Best regards

Jim


Hi Jim,

Sorry for the late reply, been a busy week at work and also had to take the girlfriend to dinner to say sorry for my a/c unit still being in pieces in the bath :D Best intentions to finish it didn't happen in time.

Glad you got the heater fixed, I just did a similar thing but to STOP my heater working right now, already over 35C here most days and the heater was on all the time :(

To answer your question, my system didn't have any gas left in it at all (courtesy of a leaking expansion valve) but yes it would also come off if the a/c pipes were still connected. Or at least on mine because there is a space under each pipe to the bottom of the top half of the cover. BUT you will have to disconnect the heater to get the top half off.

Re the vacuum set-up, I have photos of the vacuum pipes in the engine bay if that's any help to you, please let me know. I remember pulling off the fascia unit in the dash before but all the pipes behind that were the same colour, whereas in the engine bay they are multi-coloured.

Gareth

[Carslil Jim]

Hi Gareth,
The real challenge with the vacuum hoses lies immediately behind the dashboard switching unit. Problem there is that all hoses arrive, but I have no diagram to indicate which hose connects to which port on the back of the switch.

I am ok re where the various tubes go to under the bonnet, its just that all I have is trial and error on attaching at the back of the switch.

I have an operational setup, but its more of an accident than a rational set up.

Thanks for the note and I wish you well with the bathtub.

BTW there must not be many LRs in J. Especially older ones. I thought anything with a few years on it had to be crushed.

Regards

Jim

[Tokyo V8]

Hi Jim,

I took the dash switch off today to have a look for you and all I have are 1 blue and 1 white vacuum tube going into the switch, the rest looks as though it's electrical... Didn't get out the carpark today but will take a photo of it tomorrow when I'm outside to show you.

Bathtub now empty and clean (moved everything into the back of the Landy while the GF's here :)

Actually quite a few Landy's here, thousands of Discos and Rangies. Defenders are mostly 90's which wer imported officially then a few 110's and a friend has a 130 too! I even saw a Series 1 on a Japanese auction site today. It costs quite a bit to keep older cars on the road (so I do it mostly myself) but there's nothing forcing them into the crusher. My other car (more broken than my Defer :( ) is a 1973 Truimph Stag....seems I have a thing for V8's :) :)

Regards

Gareth

[Carslil Jim]

Hi Garteth,
I think we may have fifferent switching units although they look very similar. Mine looks like this


It has a plug on the back that the vacuum lines plug to, and it in turn plugs to the back of the switching unit.


The next pic is one sent to me by another County owner and the unit looks different (smaller). Mine is imbedded in a big plate.



Thanks for your ongoing interest!!

Regards

Jim

[Carslil Jim]

The pictures disappeared....here they are

[Tokyo V8]

Hi Jim,

Took a few photos of the back of my AC control unit today, never worked out how to get the top of the dash off so can't really see the connections beneath that.

Hope these help!

Gareth

[Carslil Jim]

The top of the dash is removed by taking out the screws along the top...there are three main screws, plus the demister slot screws. Thats the easy part.

The hard part is at least two screws which are driven upwards undeaneath the dash top. These can only be seen by forcing the grey dash piece back. It takes enormous effort to get these out (mine did anyway). There is a big chance that you will scratch the grey insert but that is how I got mine released. I have only put one screw back in because access is so difficult.

This is the worst case of jerry built fitting I have found on the LR so far. They should be ashamed.

Regards

Jim

[kaa45]

Danny,
Thanks for the suggestion, but these manuals are dated 1984, and they do not have later year supplements, so the 1985 County is not included and it's A/C and heater are quite different.

If you are aware of later manuals please let us know!

Regards

Jim.

Jim, you might want to OPEN your eyes and mind, next time. What you asked for is there, you just have to LOOK!!!!!

http://www.landroverweb.com/Pdf-files/Manuals/Defender-90-110-workshop-manual-5.pdf

Not just 1984, the manual is from 1984 to 1993 with supplements for later years.

Danny :p

[Carslil Jim]

Danny,
Thanks for the redirection. Section 82 in Manual 5 does have relevant information.

Tokyo V8,
Did you get the message I sent to your AULRO message system?

Regards

Jim