750 head installation

I remember having to get in a position where I could peer through the head and hook the rods into position with a bit of bent wire,perhaps due to the tilted engine its not so easy and gravity is working against you on the inlets.

If you put some spacers between the head and the barrel you can look in through the exhaust rocker cover holes and use a long screwdriver or piece of stout wire to get the pushrods engaged with the rocker arms. Probably only need to raise it half an inch or so. If you put a blob of grease on the end of the pushrod before you start they will stay engaged once you have them in place.

Once the are in place remove spacers and fit the front centre head bolt and just nip it up. you can then turn the engine over while watching that the pushrods are located correctly.Then fit the other head bolts/nuts and tighten/torque the head down.

And yes the pistons do stick up slightly.

Ian

.?????..!!

Chirping crickets ????.wtf.

I found it easiest to slip the sleeve nuts or some square section wood under the head to use as spacers to hold the head 3/8" or so off the barrels. You can then use the bit of bent wire to locate the pushrods into the ball ends without the spring pressure getting in the way. Make sure the ball ends are engaged then carefully remove the nuts / wood and lower the head into position.

With the 750 you can apparently fit the head to the barrels off the bike then fit the whole lot although as my Commandos have been 850s I've never tried this. And of course you then have a lot of weight to manage when getting the pistons into the bores.

I always insert the push rods onto the rockers

Then twist a rubber band in a figure of 8 several times from the front holding down studs around the push rods to hold them in place

Then I lower the head until there is a gap just big enough to get my long thin nose pliers in

I pull the rubber band out snapping it then lower the head and tighten

If one of the rods should become misplaced just push it back in with a screwdriver, I have used this method many times

Cheers

Heyup - That's a bit difficult if the engine is still fitted in the bike ??  Cheers, Howard

Hello,

No,I'am doing that also with a rubber band

I use a telescopic recovery tool , the kind with a small magnet (5mm dia -ish) on the tip. You can use this to manipulate the rods onto the rockers.via the exhaust valve aperture. A rubber band across the top of the head between the adjuster end of the rockers will raise the ends up and maintain pressure on the rods and stop them dropping out until you lower the head down.

best regards,

Chas

Allen's original question #1 was about the pistons sticking proud of the cylinder by 20 thou.

No one has an answer to this?

Mike

As I stated previously, yes they do stand proud. More than 20 thou' too.

Ian