Speedo glass

Loom, lights, gauges, indicators & wiring
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bumpy
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Great Britain
Posts: 151
Joined: 1 month ago
Location: Bishops Stortford, Herts

Speedo glass

Post by bumpy »

You can tell I'm running out of jobs !!

The speedo glass has a bloom inside which is making it less transparent, so I am contemplating taking it apart to clean it.

I can see the bolts on either side that allow me to remove the speedo, but just how simply can I get the chrome ring and glass off. If its too daunting I wont bother :)


Morris Minor 2 door saloon May 1963 in dove grey. 83,000 on original engine. Known as Moggy Moo.
Heated front and rear screens, disc brakes on front, heater, radio, refitted interior including new seats, electronic ignition.

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Custard
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Ireland
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Location: Blackpool

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Re: Speedo glass

Post by Custard »

Luckily I had one in the house.

There is a floating chrome ring that is split so just prise it off.

I managed it with bare hands without shedding blood.

Then the other ring has some springs to hold it tight and is crimped over.

I haven't had one apart but you can see how it is done.

Collar
DSCN3177.JPG
DSCN3177.JPG (307.44 KiB) Viewed 36 times
DSCN3177.JPG
EXIF-Data show/hide
Original image recording time:
2020:11:13 18:10:06
Image taken on:
Fri Nov 13, 2020 6:10 pm
Focus length:
7.5 mm
Shutter speed:
1/30 Sec
F-number:
f/2.7
ISO speed rating:
50
Whitebalance:
Auto
Flash:
Flash fired, auto mode
Camera-manufacturer:
NIKON
Camera-model:
COOLPIX P1
Exposure program:
Normal program
Exposure bias:
0 EV
Metering mode:
Pattern

Crimped Edge, its done in 3 places on mine.

DSCN3179.JPG
DSCN3179.JPG (248.17 KiB) Viewed 36 times
DSCN3179.JPG
EXIF-Data show/hide
Original image recording time:
0000:00:00 00:00:00
Image taken on:
Tue Nov 30, 1999 12:00 am
Focus length:
7.5 mm
Shutter speed:
1/20.6 Sec
F-number:
f/2.7
ISO speed rating:
50
Whitebalance:
Auto
Flash:
Flash did not fire, compulsory flash mode
Camera-manufacturer:
NIKON
Camera-model:
COOLPIX P1
Exposure program:
Normal program
Exposure bias:
0 EV
Metering mode:
Pattern

You can tell there is a bit of spring steel there.

DSCN3180.JPG
DSCN3180.JPG (187.25 KiB) Viewed 36 times
DSCN3180.JPG
EXIF-Data show/hide
Original image recording time:
0000:00:00 00:00:00
Image taken on:
Tue Nov 30, 1999 12:00 am
Focus length:
7.5 mm
Shutter speed:
1/25.8 Sec
F-number:
f/2.7
ISO speed rating:
50
Whitebalance:
Auto
Flash:
Flash did not fire, compulsory flash mode
Camera-manufacturer:
NIKON
Camera-model:
COOLPIX P1
Exposure program:
Normal program
Exposure bias:
0 EV
Metering mode:
Pattern

Now you can make an informed decision.

You could of course just take it out and remove the fuel gauge with the couple of screws and leave it in the airing cupboard or near a radiator for awhile and see if that clears any moisture

Sean.



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Mecanglais
Formally known as chesney
France
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Re: Speedo glass

Post by Mecanglais »

That isn't a spring. Those are tabs on the edges of the speedo face, it has those tabs to locate the face relative to the speedo housing. The bezel is held firm just by the crimps on the outer face.

To remove the bezel is quite straight forward. Remove the chrome outer trim (as above), I find a large flat blade screwdriver and 'walking' the bezel over the lip starting from the slot towards the face of the speedo works best, once it is over half way it more or less drops off.

The actual face is best removed by gently levering the crimps (pictured above) against the housing, at least three of them, and then rotating the face until you can find a position it pops off from freely.

To replace the bezel, I like to put the bezel face down in a towel, then offer up the speedo itself, then work the edges back over using a tack hammer.

Maybe in the 'downloads' section here there is (or certainly used to be) instructions concerning the repair of Smiths and Jaeger speedos, maybe have a look there to get an insight.



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bumpy
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Great Britain
Posts: 151
Joined: 1 month ago
Location: Bishops Stortford, Herts

Re: Speedo glass

Post by bumpy »

Thanks good people. Doesn’t look too challenging, so I’ll probably give it a go at some point.

The haze is not moisture, but is the sort of blueish haze you get on the inside of a windscreen, and generally only gets cleaned when sunshine shows it up. :)


Morris Minor 2 door saloon May 1963 in dove grey. 83,000 on original engine. Known as Moggy Moo.
Heated front and rear screens, disc brakes on front, heater, radio, refitted interior including new seats, electronic ignition.

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