QX56
New member
About a month ago I noticed that when I pressed on the brake pedal I would hear the dust boot on the power brake booster relieve itself of what sounded like it was in a partial vacuum.
I didn't pay to much attention because I thought that the boot might have shifted in place and it was struggling to get air after the brake pedal was depressed.
About a week ago the truck sounded like it had air brakes and leak with a load hissing sound every time I pressed on the pedal.
I bought a new power booster from Nissan and installed it today. The shop manual says 3 hours, I did it in 2. It was not as easy as some of the older cars I have worked on, but it went OK once I removed everything out of the way.
I don't have any idea why this booster failed as there is no signs of brake fluid leaks or motor oil on the diaphragm. Most car and trucks never see a replacement but the Nissan dealer said that they are starting to move from stock so they have plenty of them.
I paid $333.00 for the booster.
I didn't pay to much attention because I thought that the boot might have shifted in place and it was struggling to get air after the brake pedal was depressed.
About a week ago the truck sounded like it had air brakes and leak with a load hissing sound every time I pressed on the pedal.
I bought a new power booster from Nissan and installed it today. The shop manual says 3 hours, I did it in 2. It was not as easy as some of the older cars I have worked on, but it went OK once I removed everything out of the way.
I don't have any idea why this booster failed as there is no signs of brake fluid leaks or motor oil on the diaphragm. Most car and trucks never see a replacement but the Nissan dealer said that they are starting to move from stock so they have plenty of them.
I paid $333.00 for the booster.
