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Grasshopper

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Posts posted by Grasshopper

  1. It's not uncommon for the rack to become sticky over time, it's worth squirting some engine oil over it while you have the covers off. I used to do this about every 3 months on Gardener engined buses that were in use every day. From memory ther is a little screw in the rack cover plates for this purpose.

  2. Howard, we still have the old tank out of our WC having bought a repro from one of the Dutch dealers. We had to cut the top off it to diagnose a fault (the pickup pipe had a botched repair where it went through the side of the tank so would pick up air when the fuel level dropped a little or you went up a hill). PM Tootallmike as it is at his place and he goes up your way from time to time.

     

    Vince

  3. Those into vintage busses have similar issues with Routemaster accumulators, very few people have the re-charge equipment.

     

    The equipment for re-charging RM accumulators was a thing called an intensifier which took a compressor supply of around 120psi and boosted it up to 600psi at the other end via a pneumatic piston. They probably should have been Nitrogen filled, but any garage I ever visited or worked at used their standard air supply and had been doing so for many many years.

  4. At least you can tell what some electric pumps are doing by the rate that they tick. This aids the diagnostic process before you even break into a fuel system.

     

    With old vehicles, it is not uncommon for dry mechanical pumps to not create a vacuum with your finger over the end. With one of our trucks that sits for long periods, it won't lift fuel initially. I suck a bit of fuel up from the carb end of the hose, then it will run fine all day long and continue to do so until such time that it dries out again. This particular pump has been stripped a few times and the valves are in good condition having been replaced in recent times. Lack of use seems to be the cause.

     

    Vince

  5. Following much assembly and dis-assembly of the affected components, I have discovered the cause of the problem. The adjusters would both work independently with the shoe carrier return springs and "clicker" springs removed. When a load (fitting shoe carrier return return springs or the "clicker" springs) was imparted on the adjuster, the bottom one would work in one direction but slip in the other.

     

    Removing the adjuster nut assembly did require some minor destruction of the component as it is secured through the back plate to the adjuster gears by peining (this is the damage seen on the end of the adjuster). Upon dis-assembly, I discovered that the machined flats that engage the adguster gear had rounded of which was the cause of the slip. This was probably due to over winding in one direction or the adjuster having seized at some point in the vehicles life.

     

    Hopefully this information will be of use to any Ferret owner who suffers the same issue.

     

    Sorry for the poor quality pics, the light was fading and my phone doesn't take particularly good pictures.

     

    Vince

    IMG00494-20140605-2002.jpg

    IMG00496-20140605-2003.jpg

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