I finally pulled the blower motor this weekend with the intention of changing the brushes. The old ones were pretty worn down and the blower motor has been melting fuses so I decided it was time. After putting in some new brushes that I found in the tool box I hooked the motor up a battery and expect the motor to twist right out of my hand...didn't happen. The motor got off to a slow start and after about a minute of less than stellar speed it ground to almost a halt and a little bit of smoke rose from the motor. The resistance on the squirrel cage, the spinning resistance, got much greater w/i that minute. If I spun the cage with my hand it would stop as soon as my hand came off it. Obviously not right. I greased everything well, cleaned contacts, and pushed the motor housing back tightly together, which seemed like it fixed it until i put it back on the battery. Then after a minute it went right back to being slow with all the resistance.
Is my motor shot or is something else going on here?

__________________
1983 300D TurboDiesel

if it spins freely after you greased and cleaned the bearings, but spins very poorly under power, I'd bet on bad windings... it sounds like the magic smoke got out... sorry.

__________________
John HAUL AWAY, OR CRUSHED CARS!!! HELP ME keep the cars out of the crusher! A/C Thread
"as I ride with my a/c on... I have fond memories of sweaty oily saturdays and spewing R12 into the air. THANKS for all you do!

My drivers:
1987 190D 2.5Turbo
1987 190D 2.5Turbo
1987 190D 2.5-5SPEED!!!

1987 300TD
1987 300TD
1994GMC 2500 6.5Turbo truck... I had to put the ladder somewhere!

So this means a new/used blower motor is in order? It doesn't really spin freely when not in power either. It did for a couple of minutes until I hooked it up to the battery...then it got sticky.

__________________
1983 300D TurboDiesel

Yep, time for a good used or a new one.

__________________
RRGrassi


70's Southern Pacific #5608 Fairmont A-4 MOW car

13 VW JSW 2.0 TDI 193K, Tuned with DPF and EGR Delete.

91 W124 300D Turbo replaced, Pressure W/G actuator installed. 210K

90 Dodge D250 5.9 Cummins/5 speed. 400K

The blower motors seem to last a couple of 100k miles, my 300D is on it's third one.

It went through this yesterday with the 240. I had no blower when we picked up the car a month ago. so Yesterday was fit it day.

I looked through my stash of old electrical connectors and switches I drug home from PNP. found one that was the same plug that plugs into the blower. made a long jumper wire, plugged into the blower, touched the battery, nothing.

I had two blowers in my stash also. one from an 84 and one from an 85. put power to one, and almost went air born.
Installed it, and all is well in all 3 switch modes.

the squirrel cage on the old one would hardly turn. I don`t think it is worth fixing, but I might look into it.
one from PNP is about $12.00.

Charlie

__________________
there were three HP ratings on the OM616...

1) Not much power
2) Even less power
3) Not nearly enough power!! 240D w/auto

Anyone that thinks a 240D is slow drives too fast.

80 240D Naturally Exasperated, 4-Spd 388k DD 150mph spedo 3:58 Diff

We are advised to NOT judge ALL Muslims by the actions of a few lunatics, but we are encouraged to judge ALL gun owners by the actions of a few lunatics. Funny how that works

The squirrel cage is 12 bucks or the whole blower motor? I don't see how the squirrel cage could be causing the resistance that I feel. If I spin the cage with my hand as fast as I can I maybe get a half a rotation before it screeches to a halt. Can someone with a properly working blower motor tell me how long it should spin freely for so I know what to look for in a used part?

__________________
1983 300D TurboDiesel

The cage is attached to the shaft from the motor. so spinning the cage, is turning the shaft. so the bearings/bushings are causing a drag or something else is binding things up.

the assembly I pulled out of the 84 and 85 300D was the whole thing. motor with the cage attached. drop the pass knee panel. then one electrical plug on the motor, one phillips screw and 3, 8mm nuts and it drops down.

the whole thing is about $12.00 depending where you buy it as I remember.

then later you can take the old one apart and fiddle with it. It`s just plug and play.

Charlie

__________________
there were three HP ratings on the OM616...

1) Not much power
2) Even less power
3) Not nearly enough power!! 240D w/auto

Anyone that thinks a 240D is slow drives too fast.

80 240D Naturally Exasperated, 4-Spd 388k DD 150mph spedo 3:58 Diff

We are advised to NOT judge ALL Muslims by the actions of a few lunatics, but we are encouraged to judge ALL gun owners by the actions of a few lunatics. Funny how that works