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Assembly Part 2

This part will deal with the assembly of those parts that are mounted on the timing plate.

Also this part will deal with the mounting of the timing plate onto the lower main casting and with the assembly  the piston and piston sub parts and also the connecting rod and lubrication parts for the main bearings and big end.

The timing plate carries all the complex gears and governor etc.

Position the cam shaft idler stud and lock into place with an M6 nuts and then follow this with a second M6 nut in lock nuts fashion.

Fit the governor arm upper and lower bracket (unless let in position after drilling)

Fit the lower bracket. Ensure that both the supports are properly fitted and that the shaft that runs in them is free to rotate.

Check that the governor arm fits between the two brackets when supported by a washer underneath as aluminium will not easily rotate on the steel.

Fit the timing block noting that the chamfered corner is nearest to the position of the large timing gear.

Make a continuity check that there is not direct electrical path between the bolts facing out and the timing plate. If there is remedy!!

Fit the exhaust push rod with its adjuster, more so that you know where it is than anything else as you will have to remove it when passing it through the cylinder head. On the push rod fit the striker bracket on the same side as the bearing onto the cam will go. Fit the cam follower securely to the push rod.

The valve push rod is now fitted to the timing plate. This is secured in place behind the the front support and sandwiches the spacer to the timing plate. Fix in place with M4 counter sunk Allen screws.

The governor assembly is the next to fit. Push the gear through the bearing and the fit the governor to the rear and secure with the M3 allen grub screw.

2nd November 2010

The bearing for the little end was located in the con rod and secured with Loctite 603 adhesive.

The piston was connected to the con rod and a trial fit made into the cylinder liner which was temporarily inserted into the Upper main casting.

It was found that the con rod fouled on the cylinder liner. A small amount had to be removed to allow the con rod to enter and leave without touching the cylinder liner.

The liner was then cleaned and loctited into the upper housing with 603 adhesive. It is hoped that this will also make a water tight seal at each end especially the open end.

All was left to set hard.