Lotus Elan

Weber Throttle Spindle and bearing Removal.

PostPost by: ceejay » Tue Mar 12, 2019 10:35 am

They have been sitting on the workshop shelf for about three months while I concentrated on the engine build, but I knew the Webers were another job to do... so today was the day.
A close inspection revealed worn throttle spindle bearings, so they had to come out. But it is not a simple ten minute job.
Once the spindle nuts and other bits and pieces were removed, the first obstacle encountered was the brass cover plate which covers the old leather seal and bearing, all it had was two very small holes in which to engage a tool... so, to make a tool it was, after a bit of old school tool making we had a removal tool.... we took some pictures, they are below.

Engaging the tool in the small holes in the brass cover plate, it came out with a few twists and some upwards pressure, there is a spring underneath that provides a bit of pressure on the leather seal...yes, these webers still have the original bearings and leather seals.

So once both brass cover plates, springs and seals were removed, it was time to gently undo the throttle plate screws, pull the plates out (marking the orientation in the body before hand), then the spindle was tapped out of the body, luckily the spindle was in good condition.

So tomorrow, will mean a trip to the local bearing shop to see if they can match the orig Weber metric bearings, but this time they will be sealed items, and the local bearing shop boys cant supply, then it will be an online order to the weber specialists in Melbourne.

Hopefully the weber rebuild will help to produce a sweeter running rebuilt twink in the end.

And while we are at it, we will machine up a set of four 34mm chokes.
1-old-school-tool.jpg and
Old school tool making project, it saved the butchering of the brass cover plate.
2-pin-tool.jpg and
Special pin removal tool for brass cover plate
3-brass-cover-plate.jpg and
The stubborn brass cover plate
4-bearings-seals.jpg and
The vintage leather seal, coil spring, worn out bearings.
5-choke-blanks.jpg and
Choke blanks machined from solid aluminium bar stock.
6-choke-taper.jpg and
The internal taper of the DCOE chokes, which will be carefully machined to 34mm ID.
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PostPost by: MarkDa » Tue Mar 12, 2019 7:10 pm

If DIY and local suppliers fall short then all the parts are readily available from Weber specialists.
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PostPost by: ceejay » Tue Mar 12, 2019 8:36 pm

Thank you Mark, fully aware of parts situation, thanks for your input.
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