These can be repaired by creative machining and adapting of commercial gears of the proper pitch and size. The sliding and stationary 'double gears' can get damages if inexperienced operators try to engage them when the machine is running. The other parts to check are the gears on the quadrant assembly.
These wear out and if not replaced, will allow the pulley to fail catastrophically! Replacement pulley are available but cost over $700.00! So, if there is any looseness or noise from the VS pulleys, repair them immediately. There is a plastic (Delrin I believe) bushing/sleeve between the two halves of each pulley. The main point of maintenance I have found on the 5900 are the variable speed pulleys themselves. This lathe has a hand wheel on the outboard end of the spindle and Im. The later style aluminium cylinders were a better design and more reliable IMHO. They were messy to bleed and the lower slave unit was more prone to leaks. The upper drive cylinder had a rather large Gits oiler for a reservoir. out specific clauses of U's proposed contract with which it disagreed and. My experience with Clausing 59 hydraulics is that originally they were steel cylinders. 9 ) ( E's rejection of U security and hiring.
