This post is the third in a series I am doing on the proper maintenance of Bernina 1000-Series machines. I realize that as a Bernina owner, you most likely won’t be performing your own services, but I’d still like to give you some information about what I do when you bring your 1000-Series machine to Temecula Valley Sewing Center for service.
If you are interested in reading the first two posts in this series, they are available to read by following the links below:
In this post, I will be sharing information about one of the most critical part groups in a 1000-Series Bernina machine, the carrier unit.
The Carrier Unit
There are a lot of things that can go wrong with the carrier unit. That’s why I feel that it is essential to take this group of parts out of a Bernina 1000-Series machine at least once ever 2 years. As I said in part 1 of this series, if a machine comes in for annual service, I normally alternate taking out the head frame and the carrier unit. Without taking the carrier unit out, there’s really no way to thoroughly clean and lubricate some of it’s parts. There’s also no way to check some of the adjustments on the carrier unit without taking it out, so it just needs to come out!
Some of the more common problems I see in carrier units would be:
- Bevel gears worn and making a knocking noise.
- Stitch length crank / slider damaged from lack of lubrication and squeeking.
- Broken springs that won’t allow the machine to feed fabric.
- Play in the base shaft, creating a knocking noise.
- Actual feed dog height off (as compared to feed dog height set by carrier unit position).
- Overall lack of lubrication.
The list above doesn’t even cover all of the adjustments that need to be checked.
I’ve had customers tell me that their machine worked better after they got it back for service than it worked when it was brand new. I just think I’m doing my job, and I think a lot of sewing machine technicians are not. You should always make sure to bring your Bernina to a Bernina dealer for service, and don’t be afraid to ask if they take the carrier unit out during an annual service. If they don’t, then find one that does.
Posted in Bernina