The lubricator was stripped for a clean and inspection. First job was to cut more thread on the crank end of the main shaft to reduce the axial play. The ratchet and pawl were only half engaging so that rectified the problem. The piston and cylinder were stripped and cleaned and reassembled.
It was noticed the 4x mounting screws were a bad arragnement being only screwed directly into the tank and would be continuously leaking oil past the threads. They also had some 1/8" packers which were difficult to fit between the tank and buffer beam. So some blind bushes were made and silver soldered into the tank to fix all these things at the same time. The lid was repaired at this time also.
The axle pump was dismantled and inspected and de-scaled in the check valves. The o-ring on the spindle was replaced with some graphite packing. The suction valve was noticed to lift up and partially block the suction port so the 4x grooves were filed deeper to allow more past the ball.
Happy steaming!
Nigel
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