Is the fluid leaking past the seal where you describe, oozing out or spraying out under pressure? The seal should be an
O-ring, if I remember correctly...Which means the shaft has to come out ot replace it. Have you tried a sealer/conditioner yet? (Sometimes we get lucky.) However, if we're looking at the original '78 box here, it's likely that there's more to go wrong with a box this old one waiting to happen. By the time you remove it from the truck, and disassemble it to repair the leaky seal, you're looking at potentially finding more wrong inside during your inspection, that would require repair / replacement anyhow.
I would plan on either replacing it, (Entire box), outright with a good quality rebuilt unit or having yours rebuilt by a competent experienced rebuilder.
Dave
O-ring, if I remember correctly...Which means the shaft has to come out ot replace it. Have you tried a sealer/conditioner yet? (Sometimes we get lucky.) However, if we're looking at the original '78 box here, it's likely that there's more to go wrong with a box this old one waiting to happen. By the time you remove it from the truck, and disassemble it to repair the leaky seal, you're looking at potentially finding more wrong inside during your inspection, that would require repair / replacement anyhow.
I would plan on either replacing it, (Entire box), outright with a good quality rebuilt unit or having yours rebuilt by a competent experienced rebuilder.
Dave
