Author Topic: aligning push rods when replacing rocker boxes  (Read 1189 times)

Offline pdg

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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.

Offline trevinoz

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Re: aligning push rods when replacing rocker boxes
« Reply #1 on: 28.11. 2016 20:59 »
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.

Offline Craig

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Re: aligning push rods when replacing rocker boxes
« Reply #2 on: 28.11. 2016 21:25 »
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

Offline pdg

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Re: aligning push rods when replacing rocker boxes
« Reply #3 on: 29.11. 2016 08:02 »
Many thanks. Comb ordered. Nice idea about the use of the grease.

Regards, Peter.

Offline BSA_54A10

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Re: aligning push rods when replacing rocker boxes
« Reply #4 on: 29.11. 2016 10:20 »
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use the flexiable comb to do the pushrods then it will bend enough to be withdrawn.
Bike Beesa
Trevor

Offline pdg

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Re: aligning push rods when replacing rocker boxes
« Reply #5 on: 29.11. 2016 10:25 »
Many thanks Trevor - "wise and enlightened", indeed.

Offline ellis

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Re: aligning push rods when replacing rocker boxes
« Reply #6 on: 29.11. 2016 22:40 »
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*

Online Greybeard

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Re: aligning push rods when replacing rocker boxes
« Reply #7 on: 30.11. 2016 08:53 »
...I finished the assembly in about ten minuets...
I prefer the Gavotte when I'm doing my pushrods!  *shh*
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