m4runner28
NAXJA Forum User
- Location
- Fountain Valley, CA
Hello All - First time posting…Sorry for the length of the post...
I've been having an issue with my brakes pulling to the left when applied after replacing the front brake rotors and pads (old ones were worn out). At the same time I decided to installed YJ brake lines and flush the old brake fluid out. Did the flush process by sucking the old fluid out of the master with a vacuum pump (making sure I didn’t pull all the fluid out) and filled with new fluid. Bled the brakes starting from RR, RL, FR, and then FL. Test drove and that’s when I noticed the pull to the left. After about a 30 mile test drive, I notice that the pad contact on the pass side was only at the top of the rotor vs. the driver side which showed full pad contact (only seen from the outside), telling me that the left side was doing all the work.
‘95 XJ with 4.5" lift (Ironman 4x4 upper and lower arms and adjustable track bar. 31” tires, non-ABS. Brakes are stock except for the longer YJ brake lines.
Things I've tried to resolve this issue:
- Researched all I can on the web for brake pulling
- swapped tires left to right and front to back - no change
- check and adjusted tire pressure - all even
- check and tighten all UCA's, LCA's, and Track bar
- checked myself and had the TRE's and ball joints check by a local shop - no issues found
- swapped the pads from left to right - no change
- swapped the rotors from left to right - no change
- bled the fluid for a 2nd time - no change
- replace both brake calipers with new ones, replaced the master cylinder and re-bleed - no change (YJ brake lines are new – only about a week or 2 old)
- weld mod to the knuckles where brake pads contact and create a notch – found procedure on here.
- installed the stock brake lines – no change. Put the YJ brake lines back on.
- tried stock wheels and tires from another XJ - no change
- check alignment - 2 time now all within spec - no change
- Removed prop/combo valve disassembled and cleaned. Reinstalled and re-bled - no change
- removed the hard line from the prop valve to the front pass caliper and checked for blockage using compressed air - none found
- now I'm on my 3rd or 4th bottle of brake fluid from several bleeds
I’m at a loss with this brake issue. I have another new pass caliper I picked up I can try. I haven’t bled the prop valve. I read the prop valve mod on here somewhere which mentions how to bleed a prop valve. I can try that. I thought the prop valve didn’t have to be bled. I don’t have any experience with that – maybe someone can comment….
Not sure what else to try. If anyone has any ideas – please let me know.
Thanks for your help/comments….
I've been having an issue with my brakes pulling to the left when applied after replacing the front brake rotors and pads (old ones were worn out). At the same time I decided to installed YJ brake lines and flush the old brake fluid out. Did the flush process by sucking the old fluid out of the master with a vacuum pump (making sure I didn’t pull all the fluid out) and filled with new fluid. Bled the brakes starting from RR, RL, FR, and then FL. Test drove and that’s when I noticed the pull to the left. After about a 30 mile test drive, I notice that the pad contact on the pass side was only at the top of the rotor vs. the driver side which showed full pad contact (only seen from the outside), telling me that the left side was doing all the work.
‘95 XJ with 4.5" lift (Ironman 4x4 upper and lower arms and adjustable track bar. 31” tires, non-ABS. Brakes are stock except for the longer YJ brake lines.
Things I've tried to resolve this issue:
- Researched all I can on the web for brake pulling
- swapped tires left to right and front to back - no change
- check and adjusted tire pressure - all even
- check and tighten all UCA's, LCA's, and Track bar
- checked myself and had the TRE's and ball joints check by a local shop - no issues found
- swapped the pads from left to right - no change
- swapped the rotors from left to right - no change
- bled the fluid for a 2nd time - no change
- replace both brake calipers with new ones, replaced the master cylinder and re-bleed - no change (YJ brake lines are new – only about a week or 2 old)
- weld mod to the knuckles where brake pads contact and create a notch – found procedure on here.
- installed the stock brake lines – no change. Put the YJ brake lines back on.
- tried stock wheels and tires from another XJ - no change
- check alignment - 2 time now all within spec - no change
- Removed prop/combo valve disassembled and cleaned. Reinstalled and re-bled - no change
- removed the hard line from the prop valve to the front pass caliper and checked for blockage using compressed air - none found
- now I'm on my 3rd or 4th bottle of brake fluid from several bleeds
I’m at a loss with this brake issue. I have another new pass caliper I picked up I can try. I haven’t bled the prop valve. I read the prop valve mod on here somewhere which mentions how to bleed a prop valve. I can try that. I thought the prop valve didn’t have to be bled. I don’t have any experience with that – maybe someone can comment….
Not sure what else to try. If anyone has any ideas – please let me know.
Thanks for your help/comments….