Harman Mark II fan

does anyone know where you oil the blower fan .....is there any other maintence should be done to blower fan asm

Since oil holes are not provided it probably needs to be disassembled. It's a bushing motor, the armature shaft ends ride in bushings, that's where the oil is applied. The only other maintenance is to blow out the motor with compressed air to get all the dust out that can cause the motor to overheat.

Clean the blades of the squirrel cage with a toothbrush or small wire brush if there is build up on them.

ON my hyfire, it had a ton of gunk on the blades, took a while, but seems to put out more air now.

Usually there is a HEX Allen setscrew on the squirrel cage and you can remove it quite easily.

WNY wrote:Usually there is a HEX Allen setscrew on the squirrel cage and you can remove it quite easily.

Mine have a Torx set screw. Took me about 20 min to finally decide it wasn't an SAE or metric allen screw.

gambler wrote:

WNY wrote:Usually there is a HEX Allen setscrew on the squirrel cage and you can remove it quite easily.

Mine have a Torx set screw. Took me about 20 min to finally decide it wasn't an SAE or metric allen screw.

You can use a allen on most torx.

Most of the time can use the Right Angle part of the allen wrench to get to the screw, on the combustion blowers and others you have to go in thru the exhaust opening and thru the fan blades to get the screws....

cleaned my fan yesterday and got looking found 2 half holes on on motor there is tubes under holes to feed oil to bushings if anyone wants a pic to show them let me know

GAMESNIPER wrote:cleaned my fan yesterday and got looking found 2 half holes on on motor there is tubes under holes to feed oil to bushings if anyone wants a pic to show them let me know

I guess I have to take a closer look at my blower motor. You would have thought I'd have noticed them when I installed the switch in the collection box.