Bonnet Hinge Seized On. Anyone Been here before?

Technical advice Q&A
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politeperson
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#1 Bonnet Hinge Seized On. Anyone Been here before?

Post by politeperson » Wed Nov 23, 2016 7:48 pm

20161119_120727_13.jpg
20161119_120727_13.jpg (79.75 KiB) Viewed 3882 times
I cannot get this off. The collar is seized inside the tube.

Anyone got any tips?

I have twisted it with stilsons so much I started to worry I would bend the Reynolds frame.

Do I have to start drilling?

I cannot see any alternative at the moment.

Thanks, James
James

L.J.K. Setright was right.
"You just cant beat a good E-type"

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#2 Re: Bonnet Hinge Seized On. Anyone Been here before?

Post by abowie » Wed Nov 23, 2016 9:06 pm

Yes they rust in. Stilsons should do it.
Andrew.
881824, 1E21538. 889457..oops. Jezza the V12 XJS race car.
http://www.projectetype.com/index.php/the-blog.html
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#3 Re: Bonnet Hinge Seized On. Anyone Been here before?

Post by Mich7920 » Thu Nov 24, 2016 7:19 am

Hi,

Instead of working by this side, Pinch the "bearing" into a vise and move the front sub frame.
You are going to be more strong than with your stilson.
Warm the front sub frame near the bearing and use something like WD40.
Move slowly, don't force, apply warm+WD40 and move again you'll get it.

Mich
Michel
1965 E Type FHC - On the road - 1963 E Type OTS - Angus Restoration
Gran Torino Sport 1975 - Renault 4cv 1956 - CItroen 15/6 1951 - CItroen Traction 1945
Citroen Coupé docteur 5Hp 1924 - Citroen B12 1926 - Torpedo Sygma 1913
Harley D. 1915 sidecar

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#4 Re: Bonnet Hinge Seized On. Anyone Been here before?

Post by politeperson » Thu Nov 24, 2016 8:14 am

Thanks chaps,

Mich, the frame is on the car, you mean I should take it off I assume.

I wasn't going to, but I suppose I could.

I shall try a bit harder with the stilsons first, I haven't broken out the acetylene yet, heat is an option. Not too much though.
James

L.J.K. Setright was right.
"You just cant beat a good E-type"

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#5 Re: Bonnet Hinge Seized On. Anyone Been here before?

Post by Mich7920 » Thu Nov 24, 2016 10:21 am

Yes of course the frame out I thought it was !
The problem with the Stilson is that you don't manage the frame twist.
For the warm I prefer warm air gun, in a lot of case 600° is enought and there's no flame.
Sometimes it doen't work. Not enought rapid so you need the acetylene.
Mich
Michel
1965 E Type FHC - On the road - 1963 E Type OTS - Angus Restoration
Gran Torino Sport 1975 - Renault 4cv 1956 - CItroen 15/6 1951 - CItroen Traction 1945
Citroen Coupé docteur 5Hp 1924 - Citroen B12 1926 - Torpedo Sygma 1913
Harley D. 1915 sidecar

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#6 Re: Bonnet Hinge Seized On. Anyone Been here before?

Post by golfnut324 » Thu Nov 24, 2016 10:59 am

I had that problem about a year ago.

1) Cut the flange off as here(with the hinge bolt back in):
Image

2) Stack oversized washers and a large nut. The remains of the hinge pin will be drawn through the center of the stack of nuts washers as here:
Image
Sorry for the focus!

3) Wrench:
Image

4) Done:
Image

Hope that helps!
Last edited by golfnut324 on Mon Sep 11, 2017 1:10 am, edited 3 times in total.
Craig
'68 E-Type FHC

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#7 Re: Bonnet Hinge Seized On. Anyone Been here before?

Post by nefematic » Thu Nov 24, 2016 11:42 am

Your front frame is steel, not reynolds. Trying to get one of my bolts out I overdid it with the heat, and undid the brazing. Scared me at first, but it turned out to be a good thing. I was able to drill out the rest of the torn bolt and the fitting. Cleaned everything up and brazed it back in. So I was able to fit new bushings and new bolts and new nylons.

Image
Martin Scherz
Late S2 1970 OTS US LHD

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#8 Re: Bonnet Hinge Seized On. Anyone Been here before?

Post by politeperson » Thu Nov 24, 2016 2:12 pm

Thanks Gents, that is very helpful.

I am off to the hardware store to get a suitable stack of washers/tube.

Now why didn't I think of that.

I shall post the exciting update later. hopefully.

James
James

L.J.K. Setright was right.
"You just cant beat a good E-type"

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#9 Re: Bonnet Hinge Seized On. Anyone Been here before?

Post by christopher storey » Thu Nov 24, 2016 2:53 pm

nefematic wrote:Your front frame is steel, not reynolds.
I'm not sure you are correct about that. The picture frame is steel, but the bonnet frame, as with the rest of the tube frames, is Renolds as far as I know - hence the brazing rather than welding

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#10 Re: Bonnet Hinge Seized On. Anyone Been here before?

Post by nefematic » Thu Nov 24, 2016 3:34 pm

I might not understand - the trick with the washers shouldn't work?! The (original) bolt is threaded into the brazed-on endpiece in the frame. The actual bonnet hinge is not threaded, just rusted into the endpiece, so fastening the bolt will only tighten the washers on to the frame. Now if you cut a thread in to the bonnet hinge piece, different story. Am I missing something? I don't recall where I got the notion about the bonnet frame not being reynolds. I'll check that one.

Martin
Martin Scherz
Late S2 1970 OTS US LHD

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#11 Re: Bonnet Hinge Seized On. Anyone Been here before?

Post by Mich7920 » Thu Nov 24, 2016 4:36 pm

Agree with you martin
Michel
1965 E Type FHC - On the road - 1963 E Type OTS - Angus Restoration
Gran Torino Sport 1975 - Renault 4cv 1956 - CItroen 15/6 1951 - CItroen Traction 1945
Citroen Coupé docteur 5Hp 1924 - Citroen B12 1926 - Torpedo Sygma 1913
Harley D. 1915 sidecar

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#12 Re: Bonnet Hinge Seized On. Anyone Been here before?

Post by golfnut324 » Thu Nov 24, 2016 4:44 pm

Just a very minor detail that I neglected to remember. Probably because I don't have a picture of me cutting the threads.

YES, you need threads in the remainder of the hinge piece. Sorry.
Craig
'68 E-Type FHC

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#13 Re: Bonnet Hinge Seized On. Anyone Been here before?

Post by Mich7920 » Thu Nov 24, 2016 5:07 pm

Of course you need thread but it's a part welded into tube of the frame.
What is called bearing is not threaded and it's the part James want to remove. # jag C19330
You have also 2 nylon bush to make the Bonnet Hinges smooth.
Last edited by Mich7920 on Thu Nov 24, 2016 5:56 pm, edited 1 time in total.
Michel
1965 E Type FHC - On the road - 1963 E Type OTS - Angus Restoration
Gran Torino Sport 1975 - Renault 4cv 1956 - CItroen 15/6 1951 - CItroen Traction 1945
Citroen Coupé docteur 5Hp 1924 - Citroen B12 1926 - Torpedo Sygma 1913
Harley D. 1915 sidecar

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#14 Re: Bonnet Hinge Seized On. Anyone Been here before?

Post by politeperson » Thu Nov 24, 2016 5:34 pm

Yes Mich,

It looks like a thread has been cut into the remains of the top hat, the a metric bolt screwed in. The bolt head is pushing against the large nut and the washers, then finally the tube frame to create the tension required to extract the hinge.

James
James

L.J.K. Setright was right.
"You just cant beat a good E-type"

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#15 Re: Bonnet Hinge Seized On. Anyone Been here before?

Post by Mich7920 » Thu Nov 24, 2016 5:42 pm

Oupss its' a metric ?
Michel
1965 E Type FHC - On the road - 1963 E Type OTS - Angus Restoration
Gran Torino Sport 1975 - Renault 4cv 1956 - CItroen 15/6 1951 - CItroen Traction 1945
Citroen Coupé docteur 5Hp 1924 - Citroen B12 1926 - Torpedo Sygma 1913
Harley D. 1915 sidecar

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#16 Re: Bonnet Hinge Seized On. Anyone Been here before?

Post by politeperson » Thu Nov 24, 2016 7:50 pm

I dont know. It looks like a metric thread to me.

I dont suppose it matters as after it comes out it is going to be binned.

I have a good tap and die set, so will have a go at the w/end.
James

L.J.K. Setright was right.
"You just cant beat a good E-type"

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#17 Re: Bonnet Hinge Seized On. Anyone Been here before?

Post by jivili » Fri Nov 25, 2016 8:58 pm

weld an m16 or m20 nut (can't remember which) and screw a length of studding into this with another nut to lock it tight, you might be able to turn it a bit then to free it
if not
slide on the hammer in my case a bit of 3" bar with a hole with @1-2 mm clearance on the studding
the studding was @ 600mm long.with a 20mm thick plate secure by a couple of nuts behind the plate
Essentially a bloody big slide hammer that did the job after a couple of whacks for me

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#18 Re: Bonnet Hinge Seized On. Anyone Been here before?

Post by politeperson » Sat Nov 26, 2016 6:02 pm

Well all sorted now.

I cut the top hat flange off and heated the collar up a bit.

i also tried the hot wax trick after I had wire brushed it.

Anyway, the fact is it doesn't matter how much you twist the collar with stilsons. The collar will self destruct and go oval first. Have a look.
20161126_095959_13.jpg
20161126_095959_13.jpg (53.88 KiB) Viewed 3778 times
Out it came.

I checked the fit of the new collar. It would not go inside the tube until I has cleaned it up nicely with the Dremel.

All good now, so I spent the next 5 hours refinishing the frames.

I feel I have removed 50 years of knocks and scratches. I also removed the annoying dents where the motor had scraped in previous removals.

Might get my engine in next week.
20161126_173518_13.jpg
20161126_173518_13.jpg (113.17 KiB) Viewed 3778 times
20161126_173441_13.jpg
20161126_173441_13.jpg (115.02 KiB) Viewed 3778 times
James

L.J.K. Setright was right.
"You just cant beat a good E-type"

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#19 Re: Bonnet Hinge Seized On. Anyone Been here before?

Post by Hugo » Sun Nov 27, 2016 12:25 pm

I don't think anybody mentioned planishing - walloping the outer tube simultaneously with two hammers from opposite sides. In practice it might be better to use a heavy piece of metal on one side & wallop from the other. This will stretch the metal a bit & open it up, although I have to say that in this case the tube looks rather thick for this to work. If I don't have access to oxy-acetylene (which is always my preferred method) I will resort to planishing.
Hugo Miller - rebuilding an imported Series II OTS & converting to RHD

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