77 brakes pulling right
2026 Loser of the Year
Joined: Sep 2013
Posts: 36,573
Likes: 7,017
From: New Or-leens Loo-z-anna
I think pulling to the right means the right/passenger caliper is doing all the braking, while the left caliper or the rubber line connected to the caliper is faulty.
Double check the master cylinder for clear brake fluid/it should not be dark-colored or milky-colored...which would require the system to be flushed.
The easiest first repair would be to replace the rubber hose to the caliper with a new hose...
gently press the brake pedal to see if fluid comes out of the new hose...
keep the pedal depressed...
install the new caliper...
bleed the caliper and see if that solves the problem.
If the problem still is not solved.....see comments below;
Is there brake fluid leaking onto the tire or the ground on the left/driver caliper?
If so, you can remove the caliper and rebuild the seals...or you can buy a replacement caliper....bleed it and see if the problem is solved.
Expert forum members can give you better info.
Double check the master cylinder for clear brake fluid/it should not be dark-colored or milky-colored...which would require the system to be flushed.
The easiest first repair would be to replace the rubber hose to the caliper with a new hose...
gently press the brake pedal to see if fluid comes out of the new hose...
keep the pedal depressed...
install the new caliper...
bleed the caliper and see if that solves the problem.
If the problem still is not solved.....see comments below;
Is there brake fluid leaking onto the tire or the ground on the left/driver caliper?
If so, you can remove the caliper and rebuild the seals...or you can buy a replacement caliper....bleed it and see if the problem is solved.
Expert forum members can give you better info.
Le Mans Master
Joined: Aug 2005
Posts: 6,528
Likes: 1,961
From: Temple Terrace Florida
Which chamber of the master cylinder did you add fluid? If it was the rear chamber, that will give you an idea where the leak is located. If the caliper is leaking to the point of slippage, you will need to address the leak and replace the disc pads. If one caliper needs rebuilding, the others can't be too far behind. Have they ever been sleeved in stainless steel? When was the last time the rubber hoses at all four corners have been changed? Jerry
Racer
Joined: Oct 2013
Posts: 307
Likes: 94
From: VT
jack up the left front wheel and see if the usual disc brake "drag" is present. if not, remove the wheel and check that the left, front caliper is free to move on the guides. if not, clean/polish the guides and pins. this can be done w/the caliper still attached to the hose, best to suspend it using a wire or something. how does the caliper bore look, if not clean or the piston is stuck i'd replace both front calipers. i replaced all 4 calipers on my '79 in 2013 w/AC Delco, zero issues in 10 years. price has moved up from $90ea to $140 or so now.
Race Director
Joined: May 2006
Posts: 18,699
Likes: 2,572
jack up the left front wheel and see if the usual disc brake "drag" is present. if not, remove the wheel and check that the left, front caliper is free to move on the guides. if not, clean/polish the guides and pins. this can be done w/the caliper still attached to the hose, best to suspend it using a wire or something. how does the caliper bore look, if not clean or the piston is stuck i'd replace both front calipers. i replaced all 4 calipers on my '79 in 2013 w/AC Delco, zero issues in 10 years. price has moved up from $90ea to $140 or so now.
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Or just air in the lines or one caliper. Inspect for leaks. You topped up the master. Where did it go? Did the master go empty?
if no leaks start with a complete 4 wheel flush and bleed.
if no leaks start with a complete 4 wheel flush and bleed.
Thread Starter
Burning Brakes
Joined: Oct 2020
Posts: 859
Likes: 71
No leaks tire moves freely when turned,. opened bleeder screw fluid dribbled out . Both sides were checked this way Pads same thickness inner and outer. This all happen after i refilled both front and rear reservoirs after purgeing not emmptying them completely.
Le Mans Master
Joined: Aug 2017
Posts: 8,336
Likes: 2,810
From: Cool Northern Michigan
Normally I would jump to conclusions that the left front brake is doing absolutely nothing.
But, what if the right front caliper is not releasing the rotor fully? A slight drag that's magnified when you apply the brake. Maybe the left front is braking just fine.
What would cause the R.F. not to release? Pistons / seals. Caliper bores.
Or, the brake hose. Sometimes they turn into one-way-check-valves.
You already said you have fluid at the L.F. bleeder. This time apply the brake pedal, release and immediately open the bleeder on the R.F.
If fluid shoots out of there, the hose is the problem. If it dribbles, look elsewhere.
But, what if the right front caliper is not releasing the rotor fully? A slight drag that's magnified when you apply the brake. Maybe the left front is braking just fine.
What would cause the R.F. not to release? Pistons / seals. Caliper bores.
Or, the brake hose. Sometimes they turn into one-way-check-valves.
You already said you have fluid at the L.F. bleeder. This time apply the brake pedal, release and immediately open the bleeder on the R.F.
If fluid shoots out of there, the hose is the problem. If it dribbles, look elsewhere.
Thread Starter
Burning Brakes
Joined: Oct 2020
Posts: 859
Likes: 71
Just test drove vehicle after releasing both bleed screws to purge air, Car does not pull in either direction. I did see that both brake lines were replaced hoses also by me some time in the past. I surmise there was air in the passenger brake hose because of the bubbles I saw, but that hose could be breaking down inside. Thanks for every ones input
t
t
Le Mans Master
Joined: Aug 2017
Posts: 8,336
Likes: 2,810
From: Cool Northern Michigan
At some stores the crush washers are included with front calipers. Not so with others.
And I see some vendors include two crush washers with a rubber hose "set" of four.
My local NAPA forgot the crush washer with my front caliper purchase. They had similar copper washers in cases but were not the soft metal that is needed.
Supposedly, these washers are a "One-Time" use only. But, I have reused them when I can't find replacements and no leaks.
Someone on this forum taught me the trick to attaching the hose to the front caliper. Install the hose on your workbench. Put the caliper in your bench vise and really torque down the hose using a line wrench. Then, install on the vehicle as one unit.
And I see some vendors include two crush washers with a rubber hose "set" of four.
My local NAPA forgot the crush washer with my front caliper purchase. They had similar copper washers in cases but were not the soft metal that is needed.
Supposedly, these washers are a "One-Time" use only. But, I have reused them when I can't find replacements and no leaks.
Someone on this forum taught me the trick to attaching the hose to the front caliper. Install the hose on your workbench. Put the caliper in your bench vise and really torque down the hose using a line wrench. Then, install on the vehicle as one unit.