ionbeam wrote: ↑Wed Apr 08, 2020 10:01 am
...I get see how fun 44°F PR4s are to wrestle off & on.
Surprise! My front brake pads are due to be changed...
Surprise! The front ABS sensor is frozen in the housing...
I brought the wheels into the house and set the wheel/tires on the heat vents (forced hot air) and let them stand. I have a setback thermostat that turns on the heat in these days of home isolation at 8:00 am. By the time breakfast was done the tires were plenty warm. I took the soon to be mounted tires and put them in a box and let my heat gun run into the box. The new tires got put on so it must have helped. The word 'easy' never came into play.
I have a Marc Parnes style balancer made by FJReady that I tried to use to balance the tires. For the first time I had repeatability problems getting the same light spot and then one time showing the weights were too much, then after a short spin the weights were not enough. There isn't much to the balancer that could go wrong. On a lark, I took the 40°F bearings from the balancer to the kitchen and set them in my convection oven set for 110°F for about 15 minutes. I went back to the garage, setup again and gave the tire a little spin and it turned, and turned and turned with no indication of slowing down. Everything was back to normal and the sensitivity of the balance was excellent. The rear tire took 30 grams and the front took 10 grams. It's the first time a PR4 took weight to balance. Apparently the grease in the balancer bearings likes to be warm and gets stiff when cold.
Once the brakes were cleaned up and in hand for inspection the fronts aren't an emergency like I thought, but they are still on the 'soon' schedule.
I did manage to get the front ABS sensor out, and now, after a little drive I can see that the sensor was undamaged. I was concerned about the sensor because substantial force was used to get it out. Both the front and rear sensor housings got cleaned and a very light swabbing with high temperature silicon spark plug boot release grease. Don't tell my car that it's sharing with my motorcycle.
So far as my first ride on the new tires --- aaaahhhhhhhhh!
