Foretravel Owners' Forum For owners and Fans of Foretravel Motorcoaches September 11, 2025 ...

Replacing D2 Governor

March 22, 2016, 05:28:29 pm

When removing and installing the D2 Governor, are the plugs and air hoses installed dry? If installed with a sealant, what sealant is used. Thanks
Larry

Quote Selected

Re: Replacing D2 Governor

Reply #1 – March 22, 2016, 06:07:51 pm

You can use teflon tape,permatex thread sealant,anything you would use to seal pipe threads.

Quote Selected

Re: Replacing D2 Governor

Reply #2 – March 22, 2016, 07:11:14 pm

Teflon tape is frowned upon in air systems. Several people have found pieces of tape clogging valves. Pematex is what I use.

see ya
ken

Quote Selected

Re: Replacing D2 Governor

Reply #3 – March 22, 2016, 07:12:47 pm

The ones I buy have the sealant on the plugs.

Quote Selected

Re: Replacing D2 Governor

Reply #4 – March 22, 2016, 07:14:27 pm

What Ken and Craneman said.

A piece of yellow gas tape that had migrated to one of the HWH six pack solenoid valves was the cause of an extremely frustrating leveling problem we had in 2011.

Quote Selected

Re: Replacing D2 Governor

Reply #5 – March 22, 2016, 07:54:07 pm

I get what your saying about the tape but the trick is to put it on properly.Every use for the tape on any water piping or gas or
air would have the same problem if you put gobbs of it on and then use a cheater pipe to tighten it.Use a brass fitting if you can,
the soft brass will seal without tape.

Quote Selected

Re: Replacing D2 Governor

Reply #6 – March 23, 2016, 02:07:31 am

We only use Teflon sealant, not tape anymore.
And the D2's open exhaust port can allow problematic water & dirt to enter D2.  We use a barb fitting with a vertical length of hose to keep the vent protected, but still open to the atmosphere.

Quote Selected

Re: Replacing D2 Governor

Reply #7 – March 23, 2016, 08:35:24 am

If one is worried about dirt/trash entering the D2 exhaust port (I'm not), they make little filtered protective plugs that screw into the port.

solenoid valve exhaust silencer - Google Search

Quote Selected

Re: Replacing D2 Governor

Reply #8 – March 23, 2016, 09:06:37 am

A trick that I have used, when I replaced a D2, was to do the pipe connection before mounting the new D2.  With the D2 loose in my hand, it is was way easier to get the threaded connectors to alien, start and I got a couple of turns of the nut.  Then I mounted the D2 to the frame, and then tightened the connectors.

Quote Selected

Re: Replacing D2 Governor

Reply #9 – March 23, 2016, 10:15:03 am

Does anyone know a way of testing a new D2 governor with out actually installing it? The reason for my asking is I had a brand new D2 installed at Bern'd and it was defective from the start. Locking the brakes at FT dump station. Very embarrassing.

Quote Selected

Re: Replacing D2 Governor

Reply #10 – March 23, 2016, 11:12:13 am

The Meritor d2 governor we received from FOT parts came with a breather assembly screwed into the exhaust port. The governor and the breather assembly are pictured in a Governor article posted on the Beamalarm webpage. Has anyone used this breather assembly?
Larry

Quote Selected

Re: Replacing D2 Governor

Reply #11 – March 23, 2016, 11:47:47 am

Larry,

If the replacement D2 you received has a breather in the exhaust port, I would leave it there.  It certainly won't hurt anything...might discourage wasps from trying to nest there.  It is probably similar to the ones pictured in the link I posted above.

Quote Selected

Re: Replacing D2 Governor

Reply #12 – March 23, 2016, 01:27:25 pm

To test the d2 governor while removed you could get an air regulator with a gauge, hook it up to the port for the signal line and in used ports plugged and see when it starts putting air out the port to the unloaders

Quote Selected