Step | Action | Yes | No |
---|---|---|---|
DEFINITION: Noise originating from the blower motor. | |||
1 | Were you sent here from Symptoms or another diagnostic table? | Go to Step 2 | |
2 |
Is a noise evident during the blower operation? | Go to Step 3 | Go to Step 10 |
3 | Does the noise vary with the blower speed? | Go to Step 4 | Go to Step 10 |
4 | Inspect for excessive vibration at each blower motor speed by feeling the blower case. Is excess vibration present? | Go to Step 5 | Go to Step 10 |
5 | Remove the blower motor. Refer to Blower Motor Replacement . Inspect the blower motor for deposits of foreign material. Did you find any foreign material on the blower motor? | Go to Step 7 | Go to Step 6 |
6 | Inspect the blower motor for the following conditions:
Did you find any of these conditions? | Go to Step 8 | Go to Step 9 |
7 | Remove the foreign material. Is the action complete? | Go to Step 10 | -- |
8 | Replace the blower motor. Refer to Blower Motor Replacement . Is the replacement complete? | Go to Step 10 | -- |
9 | Install the blower motor. Refer to Blower Motor Replacement . Is the action complete? | Go to Step 10 | -- |
10 | Operate the system in order to verify the repair. Did you find and correct the condition? | System OK | Go to Step 2 |