Threaded Mode | Linear Mode

03-16-2008, 09:15

Shane may have a different theory.
Straight through-I guess the theory for the valves in the first place may be two fold. One to cut off the hot water to the heater core in summer. I never close mine and have not noticed any difference. The fans are off as are the slide switch. The hot air blows out of different vents than the chassis air. Two, if a leak developed forward of the engine the gate valves would stop the leak until repaired. "???????"

My valves bottom and top out.

I do not know where the best place to drain is located. I can see how I could change the valve that screws into the right thermostat housing without draining and not have much fluid loss. The other one on my coach is down low in front of the rear bumper and may be another issue.

Leroy Eckert
1990 WB-40 Smoke N Mirrors
Dahlonega, GA
Royale Conversion

Don Bradner wrote:

Three questions:

Why replace the valve at all, rather than a straight-through?

Did the handle still come to a stop at each end of travel (mine do)?

Where do you drain the coolant in order to get it low enough to remove the valves?

On 3/16/2008 at 4:41 PM sfedeli3 wrote:

>Good luck! I sure hope it fixes your problem. I was so darn confounded
>with mine that I eventually gave up and just listened to Kelly
>complain about cold feet. Finding the dropped gate was purely
>accidental. The R&R on the water pump was just some
"preventative"
>maintenance that I had elected to do.
>
>-- In "WanderlodgeForum%40yahoogroups.com", "Don Bradner"
>...> wrote:
>>
>> Shane, that's a new one, thanks!
>>
>> Don Bradner
>> 90 PT40 "Blue Thunder"
>> Eureka, CA
>>
>> On 3/16/2008 at 11:13 AM sfedeli3 wrote:
>>
>> >Hi Don,
>> >
>> > My guess is that one of your gate valves "dropped". Even though the
>> > valve handle is turning, the inner gate is not lifting. My front heat
>> >circuit did not work for 3 years. Tried flushing the entire loop,
>> >replacing sporlans, relays, dash switches, circulating pump and still
>> >no heat. Finally, removed the gate valve when I pulled the water pump
>> >to replace
it and saw that the gate was in the down position. The
>> >inner threads had eroded and when you rotated the handle, nothing
>> >would happen to the gate. I've replaced 2 of the 4 valves with ball
>> >valves.
>> >
>> >Shane Fedeli
>> >85PT40
>> >Hershey, PA
>> >
>
>
>
>------------------------------------
>
>Yahoo! Groups Links
>
>
>

Be a better friend, newshound, and know-it-all with Yahoo! Mobile. [url=http://us.rd.yahoo.com/evt=51733/*http://mobile.yahoo.com/;_ylt=Ahu06i62sR...o8Wcj9tAcJ ] Try it now.[/url]