The original pumps use an asbestos packing. This was well and good in the day but now days the obvious issue is health concerns.
Practicality wise, they were not a good concept unless the vehicle was in frequent use (daily) as the shaft was a mild steel and the packing tightness was a compromise between tight enough to stop the water leak and too tight causing scouring of the shaft. Realistically they are a constant loss concept so that a small quantity of water weeping past the seal will act as a lubricant and a cooling effect.
The best remedy is to have someone who is good with a lathe convert the pump to a more modern design.
Take a skim off the shaft and make a thin walled stainless steel sleeve. Shrink fit it to the shaft.
1) Machine just enough (there is very little material to spare) and fit a modern lip seal.
or
2) Stay with the original packing design and use a modern packing material that is not abrasive like the asbestos rope was.
1) Then forget the pump for the rest of the time you own the vehicle.
or
2) Very occasionally tighten the packing nut a miniscule amount.
Regards
Doug
__________________
dgrev@iinet.net.au
|