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Post by djm16 on Nov 5, 2023 12:07:15 GMT
My 3-litre has a LucasAir evaporator head unit. Driving along this evening, there was a sudden and violent clattering from the AC head unit. When I looked down, I saw a 2" x 1" aluminium plate on the floor underneath the air intake. Unfortunately, that was not the end of it. Clattering resumed a few seconds later.   I have inspected as far as I can without dismantling and with limited views the inside of the head unit and could see nothing loose. My hypothesis is that something fell from above and entered the air intake (should it have a mesh over it?). |
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Post by djm16 on Nov 5, 2023 12:08:09 GMT
Does anyone have a clue what this aluminium plate is from? It does not look like a broken fin from inside the head unit, they are very different.   It looks to me like some sort of spacer. |
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Post by velvet on Nov 5, 2023 13:21:16 GMT
They are spacers (washers) for adjusting the glovebox draw height/level with the rest of the woods ie corner wood and centre draw or grill.
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Post by djm16 on Nov 6, 2023 1:13:23 GMT
That's a brilliant answer, thanks. It is also a fair relief to know. I don't suppose you have a picture of where they go?
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Post by Eric R on Nov 6, 2023 9:24:58 GMT
they resemble the door shims from Wadham's
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Post by velvet on Nov 6, 2023 14:13:34 GMT
The more shims you put in, the lower the draw will sit  |
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Post by enigmas on Nov 6, 2023 22:03:50 GMT
I guess Velvet's explanation leads to the deduction that the glove box door is loosely secured and that the air intake for the A/C evaporator is open to objects from above falling directly into the fan motor. 👍
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Post by djm16 on Nov 7, 2023 0:41:20 GMT
That clearly is where it (they?) came from. Quite how it got past the parcel shelf and then through the maze of cables and hoses to get into the AC intake is hard to imagine, probably a bit like a falling sycamore leaf.
Thanks for the photo. So much more use than a thousand words.
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Post by djm16 on Nov 7, 2023 9:45:41 GMT
Still slightly puzzling in that the glovebox lid hinges were not loose. However, the support for the AC head unit is anchored under the RH hinge, so I guess that 60 years ago the installer removed a couple of spacers when putting in the AC head unit and then just left them sitting loose somewhere.
I have a further question for Velvet (or anyone). How do you remove the wood dash panelling from behind the steering column? At some point I will need to remove these for refurbishment.
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Post by enigmas on Nov 7, 2023 12:19:36 GMT
Just an aside David, recently I've been into a big learning curve in relation to car Aircon systems primarily in classic cars. Obviously these are generally older systems and originally used R12 refrigerant. If I may ask, how old is your system, is it still working efficently and does it still use R12 refrigerant or an alternative? * This screenshot from an old post (missing image) by Velvet may assist.  |
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Post by velvet on Nov 7, 2023 19:36:51 GMT
That wood behind the binnacle is a pregnant dog of a job to get at the top 2 screws. The bottom has 2 nuts to remove which have easy access.   |
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Post by djm16 on Nov 12, 2023 0:05:03 GMT
Re the AC.
My system is a bit like my grandfather's broom. The only original bit now is the LucasAir unit. I have replaced the compressor with a Sanden universal unit, the condensor is a modern aluminium one, chosen to (only just) fit in front of the radiator, and I also replaced the squirty thing with attached thermostat capillary tube the name of which I can't remember, (and all the hoses).
It runs on modern refrigerant and produces a decent amount of cold air even in 40C, although I usually turn the compressor off when stationary to avoid overheating.
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Post by djm16 on Nov 12, 2023 0:06:12 GMT
Yikes. That job is going to have to wait then!
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Post by enigmas on Nov 12, 2023 8:40:15 GMT
Re the AC. My system is a bit like my grandfather's broom. The only original bit now is the LucasAir unit. I have replaced the compressor with a Sanden universal unit, the condensor is a modern aluminium one, chosen to (only just) fit in front of the radiator, and I also replaced the squirty thing with attached thermostat capillary tube the name of which I can't remember, (and all the hoses). It runs on modern refrigerant and produces a decent amount of cold air even in 40C, although I usually turn the compressor off when stationary to avoid overheating. Sounds like all of your modifications to the A/C have improved its functionality David. 😎👍 Can you post some pix of the underhood arrangement of the various components as I'm interested in both the technical aspects and the fitting of these components in P5 Rovers? * The squirty thing I believe is the "expansion valve". |
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