Browse Author: tore@grenasberg.no

PC in the man cave

It just had to happen, not part of the original plan. A PC is very convenient when you need documentation for the bike. Surfing on the mobile or the tablet is not the same.

An old pc but fine for this purpose.

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Water pump

The bearing in the pump is not good and should be replaced. How to proceed to disassemble the pump ?

Remove the pin (17) and tap the axle (upwards) with a hammer.

 

water pump

 

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The seal mounted in the middle of the spring seems to be difficult to get hold of. It’s worn and need to be replaced. Can’t see it as a part in the drawing. Perhaps it’s included in part 6 ? Not sure if that part is available either. If not I have to buy a complete new pump, quite expensive but still able to get. The new bearing I bought will  be a waste of money if I have to buy a new pump….(a new lesson learned. )

Does anyone know where to buy the seal ?

 

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SRIS Check valve

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The check valves are all cleaned and the function is back to normal. The filter connected to the plastic part at the end is missing. I assume it is not possible to get hold of new ones ? I’m told its not a critical issue. If the valve get clogged no harm will be done to the engine.

 

A final touch before assembly

The lower case is soon ready for engine assembly. I will leave it unpainted as it was from the factory in 1976. Look at the bad crank seals, all of them are bad. One of them is complete ruined, found metal parts all over in the engine. The crank has now got new seals and is in a good to go.

 

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Removal of the cylinder

The cylinder is often stuck to the case and studs due to 30-40 years of rust. Using a thick steel plate with holes for attaching the cylider might solve the issue

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Screw down the bolts down onto the studs who are connected to the case.

 

 

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fasten the steel plate to the cylinder with screws

 

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Gently screw the bolts one at a time, little by little until you have a “lift off” and the cylinder is loose.

 

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Note: Remove the nut underneath the intake in the middle (right hand side of the tube). I didn’t and ruined the cylinder. Luckily I got hold of a new and better cylinder.

Lesson learned: Build yourself a man cave with better lighting and more space.

Cylinder nut