Happijac lubrication
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Forum Discussion
The 4500's come apart in exactly the same way. The only difference is the angle of the thread on the long threaded screw.
One thing I found was that when reassembling I had difficulty getting the pin back into the hole. What I discovered after several attempts was that the clamping spring needed to be set a tiny bit deeper into the hole where the bent let fits in. It's a big hole for a small leg, and has almost a 1/16 inch difference from top to bottom. Once I moved it to the "southernmost" position in the hole, I could put the pin in without difficulty.
One thing I found was that when reassembling I had difficulty getting the pin back into the hole. What I discovered after several attempts was that the clamping spring needed to be set a tiny bit deeper into the hole where the bent let fits in. It's a big hole for a small leg, and has almost a 1/16 inch difference from top to bottom. Once I moved it to the "southernmost" position in the hole, I could put the pin in without difficulty.
