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MKI / MKII S type 240 340 & Daimler 1955 - 1967

Rear vent catches not holding

 
  #21  
Old 12-29-2018, 12:35 PM
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Originally Posted by Glyn M Ruck View Post
Don't you love it when parts manuals appear to differ (Mk2 vs. S Type).
It's a royal pain, I can understand adding further detail as time goes by, but why drop part of the description from one manual to another !!!



 
  #22  
Old 12-29-2018, 12:40 PM
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man I swear the one I measured is 1/4" (the center hole). But it may end up being 3/16". Same principle as a 2 by 4, it really does not measure 2" by 4". Marketing, all marketing.
 
  #23  
Old 12-29-2018, 12:59 PM
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Jose, measure the diameter of the stepped bolt to see what that gives you, (but not in centimeters !!!), thinking about it does a 3/16 washer actually measure greater for clearance as it is designed to fit a 3/16 bolt/bar/part, so a 3/16 washer may actually measure 1/4" but you order a 3/16" washer ( a 1/4" washer may actually be 5/16" internal for clearance)

I have measured countless bolts to check/determine thread size, but have never measured a washer, I have only checked the washer fits a certain bolt etc.
 
  #24  
Old 12-29-2018, 01:16 PM
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Originally Posted by TilleyJon View Post
3/16" will be the inside diameter, you may need to throw those calipers away Jose, 100 centimeters is a little under 40" (Forty Inches) , that must be a pretty big washer !

1/4" is approx 6.35mm, 1/8" is approx 3.2mm, 3/16" is approx 4.8mm

A 1/4" thackery washer should be 1/4" internal and approx 7/16" external, a 3/16" thackery washer should be approx 3/8" external.

Quick handy helper re bolt part numbers - Jaguar use these quite a lot in the parts books, so you can work out what they are if they use this coding, Jaguar only use these when they are standard sizes, but really handy when you want to know what you need or are looking for in that box of bolts we all have in the workshop.

UFS 125 4R -- U "United" F "Fine" S "Set screw", ignore next digit, 25 is the thread diameter in %of an inch so 25/100 = .25 = 1/4" the next digit (or 2) is the length of the bolt/set from under the head to the end of the thread in 1/8"ths of an inch so 4/8" = 1/2" long this is a 1/4" UNF set screw 1/2" long.

UFB 131 16R is 31/100" dia = 5/16" 16/8" long 2" so is a 5/16" UNF bolt 2" long
Thanks all. Dave Reilly posted the Jaguar fastener decoder on the S Type Register recently.

It frustrates me that Jaguar removes detail from the parts manual. Especially as the Jaguar vendors no longer stock the item & one needs to seek it by size & description.

Getting thin fibre washers is also a pain this end & you will only find metric.
 
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  #25  
Old 12-29-2018, 01:36 PM
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What sort of thickness are you looking for in the fibre washer Glyn
 
  #26  
Old 12-29-2018, 01:42 PM
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TilleyJon the bolt is less than 1/4" inch so it must be 3/16ths or so.

this is like trying to measure the grip or thickness of the steering wheel, a total pain. I usually go to ACE Hardware and let the boys there do the measuring.
 
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  #27  
Old 12-29-2018, 01:47 PM
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Originally Posted by Jose View Post
TilleyJon the bolt is less than 1/4" inch so it must be 3/16ths or so.

this is like trying to measure the grip or thickness of the steering wheel, a total pain. I usually go to ACE Hardware and let the boys there do the measuring.
You need to get yourself some digital vernier calipers, makes life pretty easy and accurate, they are less than 30 for a decent set not much more for a really good set.
 
  #28  
Old 12-29-2018, 02:01 PM
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thank you TilleyJon, but I need a blasting cabinet first. To restore parts, I prefer that than measuring.

and if you remember the Rolling Stones song; "you can't always get what you want..."
 
  #29  
Old 12-29-2018, 02:19 PM
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AH but if you had the calipers Jose, you could measure how much you have blasted off !

I do have a blast cabinet, I use that for bead blasting smaller delicate parts, the dirty stuff I blast off in the yard with my blast pot and sweep up the mess after !!!

You will also need a good source of dry air for the cabinet, Florida air holds a lot of moisture which is not conducive with blasting

and the Lyrics of that song continue
" But if you try sometime you find
You get what you need "
 
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  #30  
Old 12-29-2018, 06:25 PM
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Originally Posted by TilleyJon View Post
What sort of thickness are you looking for in the fibre washer Glyn
I guess covering the range of 0.4mm, 0.8mm, 1mm, 1.5mm, 2mm
 
  #31  
Old 12-30-2018, 01:11 AM
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I can get some here and post them to you if you can give me the sizes you want.
 
  #32  
Old 12-30-2018, 07:22 AM
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are these vernier calipers??


 
  #33  
Old 12-30-2018, 07:39 AM
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Originally Posted by TilleyJon View Post
I can get some here and post them to you if you can give me the sizes you want.
Jon ~ I appreciate the offer & will remember it. I have friends arriving from the UK in a few weeks time to holiday with me. James is bringing a number of things for me including an assortment of fibre washers. Thanks

 
  #34  
Old 12-30-2018, 07:41 AM
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Originally Posted by Jose View Post
are these vernier calipers??


Those are vernier calipers & just what you want ~ also switchable metric/imperial. Blue button IIRC.
 

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  #35  
Old 12-30-2018, 08:42 AM
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Originally Posted by Glyn M Ruck View Post
Jon ~ I appreciate the offer & will remember it. I have friends arriving from the UK in a few weeks time to holiday with me. James is bringing a number of things for me including an assortment of fibre washers. Thanks
Cool Glyn,
If James or you have any problems sourcing them here, give me a shout and I will gladly help, all you need to do is ask, may need some notice if they are off usual/odd spec, as I can get a company to make odd ball sizes from .4mm thick and up with same ID's but different OD's etc. (like 1/4" ID with 3/8" OD or 1/4 ID and a 2" OD !) I can get them to James if needed.
 
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  #36  
Old 12-31-2018, 04:23 PM
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Originally Posted by Glyn M Ruck View Post
Those are vernier calipers & just what you want ~ also switchable metric/imperial. Blue button IIRC.
rhat is the caliper I measured with. Maybe the battery is flat and I read cm which I understood to be centimeters.

I have a bag of black fiber washers that have the almost 1/4" hole but the outside diameter is a lot larger, almost 1/2" inch.
 
  #37  
Old 01-23-2019, 09:50 AM
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I am messing with a SU fuel pump today and while disassembling it guess what I find?

2 thackery washers of 1/4" each.
 
  #38  
Old 01-23-2019, 01:43 PM
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Got notification that my 1/4 & 3/16 Thackery washers delivered to my buddy today. My car went through police clearance & weigh-bridging today. Another step closer to being on the road.
 
  #39  
Old 01-23-2019, 02:25 PM
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Originally Posted by Jose View Post
I am messing with a SU fuel pump today and while disassembling it guess what I find?
2 thackery washers of 1/4" each.
They are used on the throttle linkages so not a surprise they were lurking with some carbs Jose, always a surprise when you find bits you didn't know were there, I have never found a whole car which is a shame.

Good news re the registration process progress Glyn

 
  #40  
Old 01-24-2019, 05:53 AM
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TilleyJon, I found them in SU fuel pumps, not carbs, the two screws which hold the diode and the wires to the top of the plastic piece over the points, each screw has a thackery washer similar to the ones used in the rear ventilator locks of S type and MK2.

to my amazement after cleaning the points with emery paper, the pump is ticking again.

I watched youtube videos from a MG-B mechanic to fix it. The question now is: will it last?
 

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