Lotus Elan

Brake bleeding

PostPost by: chrisbeck » Sat Jul 15, 2017 8:48 am

I've just removed my Lockheed brake servo to strip it down due to the brakes sticking on. Just waiting for the seal kit to arrive.
This might be a silly question: Should I bleed the brakes with the engine running and the servo active?
Chris
1970 Lotus Elan S4 SE
1990 Morgan +8
2006 Aston Martin V8 Vantage
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PostPost by: Foxie » Sat Jul 15, 2017 10:23 am

chrisbeck wrote:I've just removed my Lockheed brake servo to strip it down due to the brakes sticking on. Just waiting for the seal kit to arrive.
This might be a silly question: Should I bleed the brakes with the engine running and the servo active?
Chris


No ! The servo only operates when there is pressure in the system, and its operation is not necessary to get the fluid flow needed to transport bubbles to the bleed points.

I have installed an extra bleed point at the servo nose, which is the highest point in the system, and where any residual bubbles will collect and can be vented. :)
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68 Elan +2, 70 Elan +2s
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PostPost by: chrisbeck » Sun Jul 16, 2017 10:16 am

Thanks Foxie, great suggestion. Your servo is in an interesting location, mine is down in the nose. +2 vs 2-seater?
1970 Lotus Elan S4 SE
1990 Morgan +8
2006 Aston Martin V8 Vantage
chrisbeck
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Posts: 23
Joined: 26 Aug 2010

PostPost by: Foxie » Mon Jul 17, 2017 10:22 am

chrisbeck wrote:Thanks Foxie, great suggestion. Your servo is in an interesting location, mine is down in the nose. +2 vs 2-seater?


Yes, +2. The servo was always in this approximate location, but there not much room left in the nose now, after fitting the dry sump oil tank and separator and pipework, the remote oil filter, and the K&N cone air filter. Even one of the headlamp vac pods had to go ! :)
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68 Elan +2, 70 Elan +2s
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