2010 XF Rear Brakes Piston not compresing
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Junior Member
Joined: Dec 2016
Posts: 2
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From: Los Angeles
2010 XF Rear Brakes Piston not compresing
I've changed brakes on my cars, from old to new and have never had an issue trying to compress the piston so that they fit around the newer thicker pads.
I've opened the hood of the car and on the drivers side I had opened up the brake fluid filling location and placed a rag around the mouth of the opening so that when I try and compress the piston the excess fluids are caught by the rag. well to my surprise I was unable to compress the piston.
both rears wheels are off the ground and I can turn the disk on the otherside(just to validate that the parking brake is not engaged). Is there a trick to compress the piston?
I've opened the hood of the car and on the drivers side I had opened up the brake fluid filling location and placed a rag around the mouth of the opening so that when I try and compress the piston the excess fluids are caught by the rag. well to my surprise I was unable to compress the piston.
both rears wheels are off the ground and I can turn the disk on the otherside(just to validate that the parking brake is not engaged). Is there a trick to compress the piston?
Veteran Member
Joined: Feb 2014
Posts: 9,021
Likes: 3,658
From: Adelaide, South Australia
The rear brake pistons on the XF have to be wound in, not simply pressed in.
You need a brake piston wind-in tool to do it, one with two prongs 180 degrees apart and the right distance apart. At a pinch you can do it with a pair of needle-nosed pliers, my brake mechanic has done it this way.
You need a brake piston wind-in tool to do it, one with two prongs 180 degrees apart and the right distance apart. At a pinch you can do it with a pair of needle-nosed pliers, my brake mechanic has done it this way.
Veteran Member
Joined: Jul 2014
Posts: 1,455
Likes: 557
The rear brake pistons on the XF have to be wound in, not simply pressed in.
You need a brake piston wind-in tool to do it, one with two prongs 180 degrees apart and the right distance apart. At a pinch you can do it with a pair of needle-nosed pliers, my brake mechanic has done it this way.
You need a brake piston wind-in tool to do it, one with two prongs 180 degrees apart and the right distance apart. At a pinch you can do it with a pair of needle-nosed pliers, my brake mechanic has done it this way.
Yup!!
Compressed and wound........