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Old 06-26-2022, 07:15 PM   #1
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Questioning the wisdom. Brake bleeding and hose swap

I swapped out my brake setup to Brembos from a performance pack model.
Obviously the brake system needed to be bled. All advice on the forum concerning a brake bleed sequence, at least from what I read, points to furthest to closest from the master cylinder.

Looking however through the Subaru workshop manual for the BRZ the sequence is the opposite - it starts at the wheel closest to the master cylinder. What gives?

Another snippet I have from Subaru is a TSB to apply brake friendly grease along the thread of the brake hose banjo bolt that screws into the caliper. Note this TSB applies to Brembo calipers only. I have never heard of this practice before. The torque value for the bolt does not vary. I assume this provides a better seal. I followed it - but thought it was odd.
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Old 06-26-2022, 07:22 PM   #2
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same as torqueing lug nuts clock-wise, or counter-clockwise.

the difference is just a difference.

i always do the furthest first specifically because it'll take the most fluid, and is usually the hardest. i like to leave the easier side to last so i can relax once i'm finishing up, instead of working myself up right before finishing.
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Old 06-26-2022, 07:49 PM   #3
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same as torqueing lug nuts clock-wise, or counter-clockwise.

the difference is just a difference.

i always do the furthest first specifically because it'll take the most fluid, and is usually the hardest. i like to leave the easier side to last so i can relax once i'm finishing up, instead of working myself up right before finishing.
In many modern brake systems that the wheel that is furthest from the master cylinder does not necessarily have the longest route. This might(?) be the case for the 86/BRZ as the workshop manual sequence ends with the rear wheel that is not furthest from the master cylinder.

I always figured the bleed sequence was good to follow.
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Old 06-30-2022, 09:20 PM   #4
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I do closest to farthest. To me, bleeding farthest first is like washing your car from the bottom up
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Old 06-30-2022, 10:13 PM   #5
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Looking however through the Subaru workshop manual for the BRZ the sequence is the opposite - it starts at the wheel closest to the master cylinder. What gives?
The Toyota service manual says "Bleed the brake line of the wheel farthest from the master cylinder first." under brake fluid replacement.
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Old 06-30-2022, 10:24 PM   #6
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so clearly, the answer is "yes".
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Old 07-02-2022, 03:06 AM   #7
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You're also supposed to bleed the inside pistons of the Brembo Caliper before the outside pistons. This goes a little bit against the "furthest away" rule of thumb, but the order as far as corners of the car remains the same
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Old 07-03-2022, 07:34 PM   #8
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The Toyota service manual says "Bleed the brake line of the wheel farthest from the master cylinder first." under brake fluid replacement.
... here is the 2020 Subaru BRZ workshop manual extract



https://imgur.com/a/Tcg7Bi3
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Old 07-03-2022, 08:01 PM   #9
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... here is the 2020 Subaru BRZ workshop manual extract



https://imgur.com/a/Tcg7Bi3
Mindblown. Also, I thought that the corner opposite of the master cylinder is the furthest away, which would be the rear left in a right-hand drive car (as you have in Australia), but this says to bleed rear right last...

I wonder how much variance there is between the different services manuals (Toyota/Subaru and different markets).
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Old 07-03-2022, 09:03 PM   #10
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Mindblown. Also, I thought that the corner opposite of the master cylinder is the furthest away, which would be the rear left in a right-hand drive car (as you have in Australia), but this says to bleed rear right last...

I wonder how much variance there is between the different services manuals (Toyota/Subaru and different markets).
Also note the sequence in the 2020 BRZ workshop manual, the typical 'Z' pattern (ie: RR RL FR FL) that is typically followed whether bleeding rear to front or vice versa is not traced - rather it travels in circular way around the car. The brake line routes may not run as imagined.
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