KP2 Posted 2 hours ago Share Posted 2 hours ago The steering gear was leaking by the input shaft. I was told I could take the top off and replace the seals. After removing the top I discovered the shaft had a groove in it. On these forums the only option after finding the groove I saw was to buy another gear. I tried putting JB Weld in the groove and turning it back down on a lathe, installed new seals. It held for a few minutes then started leaking again. Removed shaft again, installed wear sleeve and new seals. I ran it about two hours and it started leaking again. I searched for days and could only find one gear through Watts Truck. Weller would reman one for me but they had to have mine first so that would be a drawn out deal. So I have ordered the one through Watts. It was $2500. I called a few salvage yards and could not find one. Several places I called wouldn’t even bother to answer the phone or call back after I left a message. I had considered taking the shaft to a machine shop, have the groove welded up and then turned down but was not sure about the integrity of the shaft after doing that. Anyone ever done that before? Is there anyone on these forums with a RD688 that has had this same experience? If so what did you do? Quote Link to comment https://www.bigmacktrucks.com/topic/76265-1992-mack-rd688s-steering-gear-drama/ Share on other sites More sharing options...
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