The BSA A7-A10 Forum
Technical (Descriptive Topic Titles - Stay on Topic) => A7 1946-1950 => Topic started by: pdg on 28.11. 2016 08:13
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Hi,
I'm trying to replace the rocker boxes, but am having difficulty aligning the push rods. From a related post I'm aware that the "comb" 67-9114 doesn't work for the long stroke engine. Could anyone advise the best way of aligning the push rods, please.
Many thanks, Peter.
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It's quite a while since I did one, Peter, but I seem to recall that the holes in the head gasket pretty well lined the pushrods up and it wasn't too difficult to get the rods home.
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PDG
As I replied on the other thread - I use the comb tool with no issues. Takes a bit of learning to get your own method sorted as space is limited bet ween the 2 rocker boxes. If I am not mistaken, I do the inlet side first and for exhaust side you have to angle the comb upwards to avoid the inlet rocker.
One thing I do is put some grease into the little cups on the rockers and also the cup on the bottom of the push rod. This helps to create a suction and hold the push rod in place once it is seated.
Craig
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Many thanks. Comb ordered. Nice idea about the use of the grease.
Regards, Peter.
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When you get the comb, lay it on some stiff plastic like a shirt box lid ( showing my age am I ? ) and cut one out of that.
use the flexiable comb to do the pushrods then it will bend enough to be withdrawn.
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Many thanks Trevor - "wise and enlightened", indeed.
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Just fitted pushrods back in my 1960 A10 with a bent piece of copper earth wire. That worked a treat, and grease in the rocker cups. First time I have done this and apart from the difficulty seeing the exhaust rocker cups I finished the assembly in about ten minuets. *smile* *smile*
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...I finished the assembly in about ten minuets...
I prefer the Gavotte when I'm doing my pushrods! *shh*