HWH jack leaks at PLUG?

[Tenn.Vol.]

The plug on the top of my HWH jack leaks.
As I understnd it the plug is for the
electrical connection if you have FULL
auto jacks. As mine are manual jacks,
and the metal plug is leaking as it goes
into the jack.
Has anyone had the problem, and how did
you repair it? I tightned it to no avail.
Do you think teflon tape would work,
as it is under alot of pressure!!!TENN.

[Tenn.Vol.]

The plug on the top of my HWH jack leaks.
As I understnd it the plug is for the
electrical connection if you have FULL
auto jacks. As mine are manual jacks,
and the metal plug is leaking as it goes
into the jack.
Has anyone had the problem, and how did
you repair it? I tightned it to no avail.
Do you think teflon tape would work,
as it is under alot of pressure!!!TENN.

[KIX]

You could try teflon tape but if that doesn't work go to a hardware store and buy some pipe thread compound. I've used a brand named GASOILA on threads for gas, oils and air (hence the name) with great success.

[smlranger]

Teflon pipe joint compound should work fine. I suspect you can remove the plug with minimal loss of fluid (no pressure) if you do it with the jack fully retracted (most of the fluid will be in the lines/reservoir at that point).

[Hikerdogs]

The plug at the top isn't just for fully automatic jacks. It's also the sensor on a manual system that turns the light on in the panel when the jack starts to extend and goes out letting you know it's fully retracted.

When I replaced a couple jacks 2 years ago they didn't come with new sensors. As I recall the nut on the sensor is 9/16". I removed the sensor, wraped the threads with teflon tape and reinstalled it.

The assembly can easily be removed (at least on our coach) without removing the jack. When resealing the threads the key is to make sure the top of the jack is perfectly clean before you try to remove the sensor, and leave the teflon tape off first couple threads.

The threads are tapered pipe so most the sealing is done on the wider top portion. By making sure the top of the jack is clean and leaving the bottom threads bare there's less chance of getting dirt and bits of the tape in the hydraulic system. The ports in the system are small enough that even a small piece could get lodged somewhere and keep a jack or slide from operating properly.

[Tenn.Vol.]

Thanks all, as I had tried the pipe dope thing
about a yr. ago. Let it set up and all but
still had a small oozz!!!!!!!!The teflon tape
was the answer, as it stands RIGHT NOW..Tenn.