Blower Motor on Air Handler

[Top Shelf]

I've got the typical Cruise Air / Dometic set up. Compressors in the engine room and evaporators / air handlers in the state rooms and salon.

In the guest state room the blower motor is bound up. I can turn it by finger tips and I'm trying to get PB blaster in there. It's in such tight spot that I can hardly get my head and the can of PB blaster in at same time. But it is getting looser.

The question is...Am I wasting my time? Has anyone really brought one of these back from the dead. I'm guessing the bearing just got a little rusty during a prolonged shut down. what do you guys think? Thx.

[MikeP]

I had that issue with a previous boat - managed to get it lubed with light oil and it ran for 3 years perfectly till we sold the boat.

[DCMY #92]

I suspect you can get it working if you slowly inject a lubricating solvent and spin it as best you can. These motors have bronze bushings, so letting the penetrating lubricant work on the shaft rust should work.

About a year ago I replaced my 43 year old CruiseAir system with new CruiseAir units (all were still working as new - but not up to today's standards). I used to lube the fan motors with tiny nylon tube connected to a small hypodermic syringe. It let me get a few drops of oil in (all you need) without spraying oil all over (to be avoided).

Once you get the fan freed up, you might want to lube it with light weight oil to replace the penetrating oil in the felt reservoirs.

[Top Shelf]

Just to time out on this one....Good suggestion on the hypodermic.....It got me thinking. I ended up drilling a hole in the top of the blower housing....fished a McDonalds straw down and onto the shaft, against the bearing and dribbled PB blaster down it. 2 or 3 turns by hand and it was spinning freely. So I think I'm good to go.

The shame of it is I could of done this day one without taking all the ducts off had I thought of it. But thanks again for the suggestions.

[Top Shelf]

Well this is one of those "what am I being punished for" deals. Blower motor runs all night and all day today. Go up to the boat today, shut it down, start it back up, good to go.

Get all the duct work back on and before I buttom up the access port in the cieling the little voice says, give it a whirl. Well the damn thing is bound up again. Dribble PB and WD 40 down the straw again, no joy. Maybe it's bound mechanically.....take all the stuff off. Nope. Another half a can of PB and no go.

I finally find away to get my shoulders in there, cause this dang thing is coming out now. I get the allen head off that allows the blower housing to rotate. The housing is turnig but I cannot figure out how to get the thing off of the evaporator coils. There has to be some catch or lever somewhere, but after an hour I can't find it.

Does or has anybody ever taken the blower housing off of the evaporator coils and if so how? Thx.

[yachtsmanbill]

Is that a fan or squirrel cage blower? You may need to pull the motor apart to clean the shafts and bearing. They are brushless and childproof! ws