I have had a seemingly common problem with my Omnivent. Even though my van is reasonably new (2 years old) the fan simply stopped turning. Reading through the forum it seems a common problem, though sometimes they "twitch" but fail to get going properly. Fortunately I have managed to fix it and the good news is it's really simple. In fact the rivets do not need to be removed at all. They need to stay in place as they hold the brushes in place. In fact the top of the motor simply prises off! Just get a sharp but sturdy blade and insert it between the lid of the motor and the base. The strong magnet on the motor does try to hold the lid in place, but if you work your way round it comes off OK. The common problem seems to be that the brushes stick in the holders. They have used a very weak spring, so it doesn't take much. After easing the brushes off and a drop of WD40 I reassembled it with a smear of silicone sealer round the top and it is now perfect.
Omnivent Roof Vent repair
- Thread starter Vanman1
- Start date
Hi, having read the above I posted a request re Fan nut Left or R hand thread. I have now found the answer, anticlockwise to undo. I could not see the thread direction so had to guess but it was very tight with locktight. I heated a socket with a blow lamp to just hot and applied it to the nut, gave it 10 seconds then tried anticlockwise, it worked so took the socket off straight away and removed the nut with a spanner. The above advise is right on the ball. I removed the motor from the panel by disconnecting the spade terminals under the switch so I could work freely. Mounting one of the motor tabs in a vice I teased the base and body gently apart using a Stanley knife blade applied to the joint and applied a gentle tap with a screwdriver handle. it came apart easily. I removed it from the vice. As vanman says, the motors magnet tries to hold the body and base together so be gentle and ease them apart. You will see a flat disc 'the windings' lift this up and pull gently out. The commutator (brass segments) will leave the carbon brushes and the bearing will follow. As vanman said, the brushes tend to stick in their sockets, one of mine was and I think all the reports will probably be this falt. I just teased the brush around with a kiddies paint brush and it came loose and assumed its correct position. Blow out any carbon dust and take care when reassembling to gently spread the brushes so as to allow the commutator in between without damaging them. That's a lot of gently's and take cares, sorry. Thanks again for the help.
The wires to the brushes were very tight on mine iirc and easing the wiring route fixed it,sounds like you've done a good job
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