Adjusting rear drum brakes

HomesD86 · Feb 12, 2018

can I just pull on my bell cranks till I hear it stop clicking to properly adjust my drums my e brake is seized so I can’t do the reverse method

1st4x4 · Feb 12, 2018

Use a flat head and spin the wheel threw the back untill theres alittle bit of drag. Why is the parking break not working. What in it is seized

HomesD86 · Feb 12, 2018

It’s seized along my frame by my gas tank it’s so seized it’s insane I have a genuine cable I want to put replace my old one with just haven’t gotten to it yet

1st4x4 · Feb 12, 2018

Just replace the cable. But if not adjust them threw the rear with a flat head you will have to jack the rear end up

HomesD86 · Feb 12, 2018

My LR drum is properly adjusted and won’t click if I pull on my bell crank that adjusts the stars when you pull your e brake I’ve had a little trouble with my RR drum and I know it’s not adjusted quite right and since my LR doesn’t click I was wondering if not even having to remove my tire I could just pull the bell crank till it stopped clinking like the other side

HomesD86 · Feb 12, 2018

Or even skip the screw driver and a tight spot method haha

1st4x4 · Feb 12, 2018

You can do it without removing the tire but if it's as far as it will turn then something else is wrong.

HomesD86 · Feb 12, 2018

It will still turn just my LR is adjusted so the crank won’t grab the next tooth on the start till the shoe is worn more but my RR clicks indicating that the adjust will still grab the next tooth

HomesD86 · Feb 12, 2018

Because if they are self adjusting by pulling the e brake in reverse that would lead me to believe if the wheel is on the shoes won’t over adjust themselves I may be wrong

HomesD86 · Feb 12, 2018

I think I’ll just have to mess with it some more

1st4x4 · Feb 12, 2018

You don't pull the ebrake in reverse just using the ebrake adjusts it. If one needs more adjusting if you don't know how to turn the little wheel Google "adjust rear drums" or search on this site

HomesD86 · Feb 12, 2018

Then pulling my bell crank like I said should work because that is what the e brake pulls to activate the e brake

jberry813 · Feb 12, 2018

HomesD86[OP] said: ↑

Because if they are self adjusting by pulling the e brake in reverse that would lead me to believe if the wheel is on the shoes won’t over adjust themselves I may be wrong
Click to expand...

Driving in reverse makes no difference with Tacoma drum brakes. You're thinking of Bendix/Wagner system using in American vehicles in which the brake shoes share a single pivot just above the hydraulic wheel cylinder. The adjuster links the other end of the two brake shoes. With that the shoes are effectively anchored at only a single point. The hydraulic cylinder can change the effective diameter of the shoes, but it can't keep it centered in the drum. When you apply the brakes, the lead shoe is dragged along the drum which pushes the trailing shoe against the drum and shifts the adjuster towards the trailing shoe. When you back up, the leading and trailing shoes are reversed and the shoes will shift the other way when the brakes are applied.

Toyota used a dual servo setup in which there are no leading or trailing shoe. Each shoe has its own pivot opposite from the wheel cylinder. No matter which direction you stop from the shoes do not shift position. There is no motion inside the braking assembly to operate an adjuster. And as such, the adjuster in a dual servo system is linked to the parking brake. When you pull the parking brake a mechanical lever (automatic adjusting lever) wedges the two shoes apart like the wheel cylinder would. If the brakes are out of adjustment there will be significant movement in this linkage before the shoes reach the drum. This is what moves the adjuster wheel. If the brakes do not need adjusting there is not enough movement in the linkage to turn the adjuster wheel.

You can drive cross country backwards, but with a dual servo system nothing will change. The only mechanism which moves the automatic adjusting lever is by manipulating parking brake over and over or manually spinning the star adjuster.

Bendix/Wagner:

Dual Servo:

From FSM:

1st4x4 · Feb 12, 2018

jberry813 said: ↑

Driving in reverse makes no difference with Tacoma drum brakes. You're thinking of Bendix/Wagner system using in American vehicles in which the brake shoes share a single pivot just above the hydraulic wheel cylinder. The adjuster links the other end of the two brake shoes. With that the shoes are effectively anchored at only a single point. The hydraulic cylinder can change the effective diameter of the shoes, but it can't keep it centered in the drum. When you apply the brakes, the lead shoe is dragged along the drum which pushes the trailing shoe against the drum and shifts the adjuster towards the trailing shoe. When you back up, the leading and trailing shoes are reversed and the shoes will shift the other way when the brakes are applied.

Toyota used a dual servo setup in which there are no leading or trailing shoe. Each shoe has its own pivot opposite from the wheel cylinder. No matter which direction you stop from the shoes do not shift position. There is no motion inside the braking assembly to operate an adjuster. And as such, the adjuster in a dual servo system is linked to the parking brake. When you pull the parking brake a mechanical lever (automatic adjusting lever) wedges the two shoes apart like the wheel cylinder would. If the brakes are out of adjustment there will be significant movement in this linkage before the shoes reach the drum. This is what moves the adjuster wheel. If the brakes do not need adjusting there is not enough movement in the linkage to turn the adjuster wheel.

You can drive cross country backwards, but with a dual servo system nothing will change. The only mechanism which moves the automatic adjusting lever is by manipulating parking brake over and over or manually spinning the star adjuster.

Bendix/Wagner:

Dual Servo:

From FSM:

Click to expand...

Said it way better then I could maybe now he will understand

HomesD86 · Feb 12, 2018

I understand and knew most of all of this just one of those situations that’s hard to explain over the internet I appreciate you’re feed back

jberry813 · Feb 12, 2018

HomesD86[OP] said: ↑

I understand and knew most of all of this just one of those situations that’s hard to explain over the internet I appreciate you’re feed back
Click to expand...

Just spin the star adjuster manually. If there is too much slack in the shoes, pulling the cable won’t do anything because it can’t overcome the slack before engaging the auto adjustment lever.

Taccat · May 1, 2021

Just wanted to let everyone know that I was able to adjust my parking break by just pulling on the the parking brake about 12 times. It worked great!

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Adjusting rear drum brakes

#1
HomesD86 [OP] Get The Breaker Bar.

#2
1st4x4 Well-Known Member

#3
HomesD86 [OP] Get The Breaker Bar.

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#5
HomesD86 [OP] Get The Breaker Bar.

#6
HomesD86 [OP] Get The Breaker Bar.

#7
1st4x4 Well-Known Member

#8
HomesD86 [OP] Get The Breaker Bar.

#9
HomesD86 [OP] Get The Breaker Bar.

#10
HomesD86 [OP] Get The Breaker Bar.

#11
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#12
HomesD86 [OP] Get The Breaker Bar.

#13
jberry813 Professional Fluffer Moderator

#14
1st4x4 Well-Known Member

#15
HomesD86 [OP] Get The Breaker Bar.

#16
jberry813 Professional Fluffer Moderator

#17
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Adjusting rear drum brakes

#1 HomesD86 [OP] Get The Breaker Bar.

#2 1st4x4 Well-Known Member

#3 HomesD86 [OP] Get The Breaker Bar.

#4 1st4x4 Well-Known Member

#5 HomesD86 [OP] Get The Breaker Bar.

#6 HomesD86 [OP] Get The Breaker Bar.

#7 1st4x4 Well-Known Member

#8 HomesD86 [OP] Get The Breaker Bar.

#9 HomesD86 [OP] Get The Breaker Bar.

#10 HomesD86 [OP] Get The Breaker Bar.

#11 1st4x4 Well-Known Member

#12 HomesD86 [OP] Get The Breaker Bar.

#13 jberry813 Professional Fluffer Moderator

#14 1st4x4 Well-Known Member

#15 HomesD86 [OP] Get The Breaker Bar.

#16 jberry813 Professional Fluffer Moderator

#17 Taccat 2009 Base

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#1
HomesD86 [OP] Get The Breaker Bar.

#2
1st4x4 Well-Known Member

#3
HomesD86 [OP] Get The Breaker Bar.

#4
1st4x4 Well-Known Member

#5
HomesD86 [OP] Get The Breaker Bar.

#6
HomesD86 [OP] Get The Breaker Bar.

#7
1st4x4 Well-Known Member

#8
HomesD86 [OP] Get The Breaker Bar.

#9
HomesD86 [OP] Get The Breaker Bar.

#10
HomesD86 [OP] Get The Breaker Bar.

#11
1st4x4 Well-Known Member

#12
HomesD86 [OP] Get The Breaker Bar.

#13
jberry813 Professional Fluffer Moderator

#14
1st4x4 Well-Known Member

#15
HomesD86 [OP] Get The Breaker Bar.

#16
jberry813 Professional Fluffer Moderator

#17
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