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How to Replace a Trane Blower Motor – Part 1

allthumbsdiy-images-how-to-replace-trane-blower-motor-a10-header2-fl

How to Replace a Trane Blower Motor is a multi-part series article, broken into Part 1 and Part 2.

 

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.

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.

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.

Item Old New
Blower Motor GE MotorsP01
924883007504 1400
1/3 HP, MOD 5KCP39JG P752 S
Cp 5.00 / 370, RPM 1075/4SPD
Dayton 4M098G
1/3 HP
Cp 5.00 MFD / 370 VAC, RPM 1075 / 3SPD
Capacitor GE
Z97F9239
5uF, 370 VAC 50/60 Hz
A10000AFC 92-43Z572
D137452P03
Dayton
5uF 370VAC 50/60 Hz
MPP2505370J 4506W
E236128

 

REQUIRED TOOLS AND MATERIALS

  • Replacement blower motor
  • New capacitor
  • Hammer
  • Wire cutter / stripper
  • Wire nuts
  • Electrical tape
  • Mechanics Ratchet + sockets + extender
  • Work glove
  • Heavy duty rubber gloves
  • Digital camera

STEP-BY-STEP REPLACEMENT GUIDE

  1. Turn off air conditioning / heat from the thermostat.
  2. Remove battery from the thermostat (or disconnect thermostat altogether).
  3. Turn off power at the main electric panel.
  4. Turn off the emergency HVAC shutoff switch
  5. Remove top and bottom cover panels on the air handler / furnace unit (fig.5.1).
  6. Take detail pictures of where everything is located, including wiring setup from the motor, capacitor and controller (fig.5.2).
  7. WARNING – CAPACITOR WILL BE HIGHLY CHARGED EVEN WHEN THE POWER IS TURNED OFF. DO NOT CROSS CONNECT OR TOUCH TERMINALS
  8. Remove top 2 metal screws holding the door switch with 5/16” hex wrench (fig.5.3, fig.5.4).
  9. Remove bottom 2 metal screws holding the controller with 5/16” hex wrench
  10. allthumbsdiy-images-how-to-replace-trane-blower-motor-a12-cover-panels-fl

    fig.5.1

    allthumbsdiy-images-how-to-replace-trane-blower-motor-a20-inside-layout2-fl

    fig.5.2

    allthumbsdiy-images-how-to-replace-trane-blower-motor-a30-remove-wiring-fl

    fig,5.3

    allthumbsdiy-images-how-to-replace-trane-blower-motor-a50-remove-door-safety-switch-2-fl

    fig.5.4

  11. 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).
  12. Take another set of pictures, taking special note on how capacitor wires are attached (fig.5.6).
  13. 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.
  14. Remove two screws holding the fan shroud using a 3/8” socket (fig.5.8).
allthumbsdiy-images-how-to-replace-trane-blower-motor-a55-remove-controller-fl

fig.5.5

allthumbsdiy-images-how-to-replace-trane-blower-motor-a60-motor-shroud-exposed-fl

fig.5.6

allthumbsdiy-images-how-to-replace-trane-blower-motor-a65-remove-capacitor-fl

fig.5.7

allthumbsdiy-images-how-to-replace-trane-blower-motor-a70-remove-motor-shroud-fl

fig.5.8

 
NEXT >> How to Replace a Trane Blower Motor – Part 2
 

RELATED POSTS

 

John gadd

Wednesday 21st of June 2023

The original motor says 4 speed but your replacement recommended says 3 speed

RICH

Wednesday 22nd of November 2017

I have a Trane air handler also and I need to replace the motor and capacitor, but my motor is 230 volts. it is Trane model # TWV030B140A1 SERIAL # G09317481 1/3 HP 2.1 AMPS 200-230 VOLTS. 1 QUESTION IS SHOULD I REPLACE WITH 230 VOLT MOTOR OR PUT IN A 115 VOLT MOTOR.

2 , SECOND QUESTION IS ( CAN I ASK A QUESTION ABOUT THE ( TWO ) HEATING COILS IN THE AIR HANDLER ?

FINALLY , GREAT PICTURES AND EXPLINATION ! THANK YOU

kevin

Saturday 25th of November 2017

@ Rich- I am not familiar with that particular model but if I was in your situation I would replace the faulty device with a new one that is identical/very similar in specs.

Thanks! Kevin

AJ

Saturday 5th of August 2017

Thanks Kevin. You saved me hundreds of dollars. I'm issue ended up being just the capacitor.

John

Saturday 1st of July 2017

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. Doh! 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

Saturday 1st of July 2017

@ John-

Sorry to hear about the $425 but taking care of an 8 month old infant takes priority so good job there.

Just out of curiosity, may I ask you some questions?

were you able to hear your motor making high-pitched screeching sounds at all? What was the reason for replacing only the capacitor in the beginning? Can you share make/model/part numbers for your new motor and capacitor?

Hopefully our HVAC system will last for a long time!

Kevin

John

Friday 30th of June 2017

of course the cooling only lasted a half hour and now I'm waiting for the repair guy. Grrrr.

kevin

Saturday 1st of July 2017

@ john

Oh no!