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How to Replace a Trane Blower Motor is a multi-part series article, broken into Part 1 and. ABSTRACT Part I of the article series contains information on identifying the blower motor problem, purchasing a replacement part, gathering necessary tools and finally disassembling the Trane Air Handler / Furnace for removal of the blower motor.

1. Trane Furnace Blower Motors
2. Trane 950 Manual Blower Speed

BACKGROUND My Trane Air Conditioning / Central Heat has been solid since the installation date (back in 1997 I believe). Of course with any mechanical setup, components wear out over a period of time and that is exactly what happened when I started to hear high pitched sound (sort of like metal-on-metal grinding noise) whenever the cooling / heat fan kicked in.

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I researched it online after looking inside my furnace / air handler and finding metal shavings near the blower. I knew the motor was sealed (meaning I could not periodically add oil to the bearing) and had been wondering about when it would fail on me. So I called my trusty HVAC place and asked a salesperson about a solution and he suggested that I replace the blower motor. The replacement motor made by Dayton was only $140 or so but the installation fee was fairly high at $340 so I decided to tackle the job myself. This particular salesperson was very professional and even gave me some tips (like making sure to salvage the motor mounting bracket as it was very expensive to find one). He also recommended that I replace the capacitor at the same time as capacitors lose their efficiencies over time. The cost for Dayton replacement capacitor was only $8 extra so I bought one as recommended.

Trane Furnace Blower Motors

Fig.5.4. Slide out the controller. Attached wires may be short so you may need to rest it on a box of some sort next to the air handler / furnace (fig.5.5).

Take another set of pictures, taking special note on how capacitor wires are attached (fig.5.6). Wear a heavy duty rubber glove to remove the capacitor by first sliding off the rubber boot the disconnecting the wires (fig.5.7).

Set aside the old capacitor – you can either manually discharge it or let it sit around for awhile. Remove two screws holding the fan shroud using a 3/8” socket (fig.5.8). Hi, just wanted to say I completed the job last week to swap out the motor and old blower fan wheel (Model # WHL03116 or WHL3116). The motor and capacitor I replaced seemed fairly new as I believe they were just replaced in 2010. After putting the new motor on the old fan wheel, there was still a noise coming from the wheel. So I decided to replace the fan wheel as well.

I suspect that the fan wheel may have been off-balance or the blades loose in some way so as to cause the premature failure of the 5-year old motor. I had significant trouble getting the old blower wheel off the old motor.

I used oil on the shaft and tried to use a hammer but I only got so far. I had to buy a blower fan removal tool. That was the only obstacle I encountered. Thank you for your guidance and this write-up.

kevin says. Very good article. I have the same Trane furnace with GE motor, and it started getting erratic on starting after 10 years. When it did start, it was very slow to pick up speed. The capacitor checked for continuity and the ohm meter showed that it was not an open circuit. I put in new run cap and it worked for two more days.

The fan seemed a little stiff but no grating sounds or metal filings, felt very smooth. I did not have enough corrosion to unbalance the wheel. There was nothing left to do but replace the motor, which I did, with the exact motor you suggested (except frame is now 48YZ. I used the Granger Dayton 4M098. The only thing missing from the article was which way the motor runs.

The GE just has an arrow so I did not know if it was CW or CCW. The way it leaves the factory, white to white on the reversing connector, is the right way. kevin says. Well, service guy was impressed w/the capacitor change, but my motor was done after all. Knew I should’ve grabbed one from Grainger while I was there. Since my 8 mo old’s room was 82 & my dogs were cooking, I ate the repair cost- $425 for the call & motor repair. New capacitor included & since the new motor is more energy efficient-it required a 7.5 MicroFarad capacitor for the new motor.

At least I can return the Grainger capacitor for the $8 spent. Must say- new motor is nice. Can’t tell if it works better because it’s better or because the old one was on the way out.

kevin says.

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Trane 950 Manual Blower Speed

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