Tools and Materials Needed
• Screwdriver
• Ratchet set
• Socket set
• Extension bar
• Flashlight
• Replacement blower motor
Step-by-Step Instructions:
1. Disconnect the Battery:
Start by disconnecting the negative terminal of the battery to prevent any electrical hazards during the repair process.
2. Locate the Blower Motor:
The blower motor in a Kenworth 900 is usually located under the passenger-side dash. You may need to remove a few panels or covers to access it. Use a flashlight if necessary to see better in tight spaces.
3. Remove the Cover Panel:
Once you have located the blower motor, remove the cover panel or housing that protects it. This may be secured by screws or bolts.
4. Disconnect the Electrical Connector:
Disconnect the electrical connector from the blower motor. Make note of the wire colors for reconnection later.
5. Remove the Mounting Bolts:
Using the ratchet and socket set, remove the bolts or screws that hold the blower motor in place. Be careful not to drop the bolts into any crevices.
6. Pull Out the Blower Motor:
Gently pull the blower motor out of its housing. Take note of the orientation of the motor for proper reinstallation.
7. Inspect the Blower Motor:
Inspect the old blower motor for any signs of damage or wear. If the motor is damaged beyond repair, replace it with the new one.
8. Install the New Blower Motor:
Position the new blower motor into the housing in the same orientation as the old one. Secure it using the mounting bolts or screws removed earlier.
9. Reconnect the Electrical Connector:
Reconnect the electrical connector to the blower motor. Make sure the wire colors match as before.
10. Replace the Cover Panel:
Replace the cover panel or housing that protects the blower motor.
11. Reconnect the Battery:
Reconnect the negative terminal of the battery.
12. Test the Blower Motor:
Turn on the ignition and check if the blower motor is functioning properly. Adjust the fan speed settings to ensure all speeds are working.
13. Reassemble the Dashboard:
Reassemble any panels or covers you removed during the process.
14. Test Drive:
Take the vehicle for a test drive to ensure the blower motor is working correctly and providing sufficient airflow.
Note: If you are not confident performing these steps, it is recommended to have the blower motor replaced by a qualified mechanic to avoid any potential issues or safety hazards.
