1983 35FC 3208 Engine Fan Rebuild/Replacement [Facet Fan]

[freewill2008]

Nate - There is a Horton clutch that should be an exact replacement unless your
83 is very different from most FCs. A new fan is required anyway because the hub
is different.

Here is the info I sent another 83 owner a while back:

The fan clutch is not too bad of a job, but it will take some time. The
mechanical parts bolt right in. I ended up with a little less travel on the
belt tension adjustment. No big deal.

The new electric-to-air controls took a bit of thought and attention. Had to
get the correct air relay from a local truck parts supplier. What you need to
know: The clutch uses air pressure to engage. The relay must also exhaust
pressure to release the clutch. With power on the relay coil, the clutch gets
air pressure. With power off the relay coil, the clutch pressure can exhaust.
Think it was called a "three way" valve, but like most switches and valves
called "three way", it actually has two ways. They also sold me a neat
little filter fitting that screwed right to the exhaust port of the relay valve.
A nice piece. (I bought an extra and used it to vent the lid of the power
steering reservoir.)

An air line must be run - I used aux air, same air that supplies the suspension
and air horns. To position the air relay I recommend the space under the
floorboard in the area of the throttle linkage. I mounted mine behind the
radiator in the engine compartment and then had to fabricate protection for the
relay and air/electric lines in case of a thrown belt. The air line, fittings
and relay cost about $100.

I also took the opportunity to re-wire that area of the engine, including the
harness up to the fuel valve area on top of the engine. This is also a great
time to add a manual fan switch on the dashboard if you don't have one. Its
just a SPST switch in parallel with the water temperature sensor switch on the
engine.

Horton does not build the Wanderlodge air clutch any longer but they will supply
a remanufactured unit. The Horton reman part is 7910030. It is a reman of part
number 990128. You need to find a local Horton dealer to order you the part.
Horton may be able to help you find a dealer. They were very helpful on the
phone. 800.621.1320. Because the reman price of $700 assumes you have a core,
you must also pony up the core price of $400.

Horton builds fans but they could not supply the correct fan for the Horton
clutch in a Wanderlodge. I ended up getting a fan from American Cooling
Systems, 800.974.3267. It had to be ordered from a Cummins dealer. It cost
under $100. The fan is a 10 blade model, 3.5" bolt circle, 3/8" bolt hole
diameter, 6 bolt holes, 2" pilot hole, 2.25" PW, 1.12" FB, Clockwise Rotation,
and 22" overall diameter. Part number 449200-22. A couple notes: "FB" and
"PW" are front-to-back dimensions. Also, fan makers do not look at rotation
from the same end of the assembly as engine makers do. Clockwise IS correct.

The new clutch/fan assembly runs MUCH quieter that the original, and it is
better balanced. It is both a repair and an improvement.

Bob Griesel '84 FC31 WLII WA


--- In WanderlodgeForum@yahoogroups.com, "compmanben" wrote:
>
> Hi Folks,
>
> How are you?
>
> Thanks for the responses. I was told by a local shop that a rebuild is not
possible. He may not be a machinist or may want the fat margin on spare parts.
I may need to get a second opinion after hearing of several people that rebuilt
theirs. I don't personally have the equipment for the rebuild.
>
> The spare parts are a concern. I took the model numbers referenced by the
forum and they are no longer in production. Horton will 'custom' make the fan
clutch if needed. However, this sounds like an expensive option.
>
> The fan that is meant for this fan clutch is not the right size for my shroud.
There is a company that will custom [read: cu$tom] make a fan to fit. However,
this also sounds like an expensive option.
>
> A few years back the cost [as referenced by the forum] as around $1,100. I
would estimate two custom fabbed parts and their installation to be upwards of
$1,800.
>
> In light of these three facts, does anyone have any further advice?
>
> God Speed,
>
> Nate Owens
> 1983 35FC
> "It's a Wanderful Life"
>
>
>
>
> --- In WanderlodgeForum@yahoogroups.com, "compmanben" wrote:
> >
> > Hi Folks,
> >
> > I have an 3208 engine fan clutch jingling and jangling. I currently have a
Facet fan, which no longer sells or supports the fan. I started a search for a
rebuild kit or a replacement to no avail. I searched the archives and came
across some information, but nothing concrete.
> >
> > Has anyone replaced or rebuilt the engine fan clutch? Or does anyone have
any advice to offer? Part numbers? Suppliers? How-to guide? Costs?
Electromagnetic Clutch vs. Air Clutch?
> >
> > I really appreciate any information you can provide.
> >
> > Thanks!
> >
> > Nate Owens
> > 1983 35FC
> > "It's A Wanderlful Life"
> >
>