HVAC Blower Question |
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HVAC Blower Question |
Oct 19 2023, 10:02 PM
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#1
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Veteran Member Group: Advanced Members Posts: 3,831 Joined: 3-July 04 From: Pearland, Texas Member No.: 385 |
I took the blower out of our 92 to replace it, and it appears that the blower cage is pressed on. I can see little, rusty, splines on the shaft, and no nut, nor threads for a nut. The replacement motor has a nut on the end to hold the cage on. I've hit the stud with PB Blaster and after sitting a while, tapped on it with a small hammer. No budge.
Is it really pressed on, and, if so, what's the trick for getting it off? Thanks. |
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Oct 20 2023, 05:56 PM
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#2
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Experienced Member Group: Advanced Members Posts: 2,280 Joined: 4-May 04 From: Kenvil, NJ Member No.: 331 |
I'm pretty sure I went through this when I swapped in an AC delete heater box. But I can't remember how the fan comes off the motor. What I do remember is that there are different bird cages for AC vs. non-AC heater boxes. The AC bird cage I had was too long to fit after swapping the box, it rubbed on the firewall. Being the cheap college student I was at the time, I just trimmed down the bird cage. So the fins were only held together on the motor side instead of both ends. It seemed like a type of nylon if I remember right.
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Oct 20 2023, 10:43 PM
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#3
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Veteran Member Group: Advanced Members Posts: 3,831 Joined: 3-July 04 From: Pearland, Texas Member No.: 385 |
I'm pretty sure I went through this when I swapped in an AC delete heater box. But I can't remember how the fan comes off the motor. What I do remember is that there are different bird cages for AC vs. non-AC heater boxes. The AC bird cage I had was too long to fit after swapping the box, it rubbed on the firewall. Being the cheap college student I was at the time, I just trimmed down the bird cage. So the fins were only held together on the motor side instead of both ends. It seemed like a type of nylon if I remember right. Yes, and yes! The A/C blower wheel is 5-3/4" while the Non-A/C unit is 5-1/4" in diameter. I'm sure the length is commensurate with the difference in diameter. And, as normal with automotive blower wheels, there's only one attachment point for the wheel, and it's at the end of the motor stud. I have a new, metal wheel in hand, but we went to the range today, so the install will happen tomorrow. On a side note, it looks like the hole in the evaporator box where the A/C Resister went was gone at with a hammer. The factory resistor unit didn't cover the hole, while the bolt holes lined up perfectly. I ended up cutting up some Cometic exhaust gasket material so I could cover as much of the hole as possible. Weird to see. I'm pretty sure the resister unit was OEM. |
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