How to Replace a Trane Blower Motor is a multi-part series article, broken into Part 1, and Part 2.
Part II of the article series contains information on removing the old blower from Trane XL80 air handler / furnace and replacing it with a new motor and capacitor from Dayton.
STEP-BY-STEP REPLACEMENT GUIDE
- Click here for previous steps from Part 1
- Slide out the fan shroud towards you (you will need to carry the weight to slide it out (fig.6.1, 6.2, 6.3 and 6.4). At this point, take a special note the front of the housing with the arrow (fig.6.1 and fig.6.3 – yellow arrow). This indicates the direction of the fan rotation which will in turn, match the rotation direction of the motor. You will need to put it back in the exact same direction as before.
- From the left side of the housing, remove the square nut that is attached to the shaft using a pair of pliers. This square locking nut holds the blower motor shaft in place (fig.6.5).
- From the right side, remove 3 screws holding the motor mounting bracket using a 5/16″ socket (fig.6.6).
- Using a hammer, lightly tap out the blower motor shaft (fig.6.7) to loosen the blower motor from the fan shroud (fig.6.8).
- Remove the motor and mounting bracket. Please note that mounting bracket consists of top and bottom brackets joined by 6 metal screws (fig.6.9).
- Remove two screws from each bracket leg holding the motor. Remove the top and bottom brackets and safely store the screws to use later (fig.6.10).
- Remove the old rubber bushing that was attached to the bottom bracket (fig.6.11). We will not need this bushing because the new motor comes with a bushing/spacer.
- Take a closer look at the old GE motor label (fig.6.12) and note the specifications.
- Compare the specs between old motor (fig.6.12) to new motor (fig.6.13) to ensure compatibility. Please note that new motor comes in with a 3 speed vs 4 speed with the old motor. There is a slight degradation in efficiency but I was told that Dayton motor was certified by Trane to be a compatible product. If you have the time, you may want to search for an exact match.
- On a more positive note, a new Dayton motor has a nifty connector (fig.6.14) which allows you to change the direction of the motor spin by flipping the connection (Clockwise=PURPLE TO PURPLE and YELLOW TO YELLOW; Counter-clockwise=PURPLE TO YELLOW and PURPLE TO YELLOW).
- Insert the new motor into the bottom bracket (fig.6.15)
- Attach the top bracket to the motor (fig.6.16)
- Due to new bushing being slightly thinner than the old one, there was a very small “play” so I shortened the alignment screw holes on each bracket legs by one notch (fig.6.17) and re-installed six screws.
- Cutoff excess spindle screws stubs with a hack saw (fig.6.18)
- Carefully note the flat side on the spindle and line it up to the fan shroud
- Insert the motor, checking the make sure that flat side lined up on the other side; then re-attach the square screw
- With motor in place, spin it lightly to make sure that fan is balanced and is not hitting the shroud
- Re-attach the green ground wire to the motor
- Use previous disconnect steps in reverse to re-install everything
Well, another successful project! If you found this article to be useful, why not share it by clicking on one of the social icons below. Oh, and by the way, don’t forget to sign up for my newsletter!
- How to Replace a Trane Blower Motor – Part 1
- How to Replace a Trane Blower Motor – Part 2