Troubleshooting Notes
This is called a tangential blower. On this blower, the motor is in the middle and there are two tangential fans. The fans are mounted over a slip grommet near the motor and are stabilized with another grommet on each end of the blower fans. The number one cause of failure with tangential blowers is a build up of hair and debris on the outer grommets. From time to time, especially if you have house pets, the outer grommets may need to be pulled out and the blower axial pins cleaned.
There are two types of outer grommets that have been used in this blower. If you have a grommet with a brass bearing inside, remove the bearing from the grommet, clean it, apply two drops of 3 in 1 oil in the grommet and reinstall with the smaller diameter bearing out. If you have a nylon (white) bearing in the grommet, remove the bearing, wash it and apply one squirt of a dry silicone spray and reinstall the bearing. Additionally, when cleaning the fins (fan blades) of this type of blower, DO NOT PUSH THE BLOWER FAN to either side. The blower fan can slip left and right to center it in the housing, the fan blades can become jammed if they are pushed too far to either side when cleaning.