Braking issues 240 with ABS

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  #21  
Old 05-06-2016, 09:06 AM
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act1292, I decided to check my car and OTP. Here the thing: In '91 they put an ABS system on these cars that I guess was different from earlier systems. Since his is a '92, it's going to have this newer system. They got rid of the one piston on either side of the front end and one of the rear brakes system. Why? Well, I suspect it is because ABS has to pump each brake separately. But here's a pic of my driver's side front caliper:

Note at the arrow, there is your lone bleeder screw.

Further, I took another picture to show that now only 1 line comes into the brake.


From the greenbooks, Section 5 (59) "Anti-lock breaking system (ABS) 200 1991-", it says:


The point is, if you are looking for three bleeding screws on a 240 after '91 240, you are going to be looking for a long time.
 

Last edited by zjinqui1k; 05-06-2016 at 11:05 AM.
  #22  
Old 05-07-2016, 06:30 AM
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Thanks for the feedback. I wasn't sure if the ABS calipers were different or not. I had pulled the sequence out of my Haynes manual and it didn't list any special sequence for ABS so I assumed they were the same.
 
  #23  
Old 05-07-2016, 07:35 AM
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Mine's a '91 but it looks like this with only one bleeder at each wheel. I'm assuming you meant to say they got rid of one "bleeder". Also, the instructions for bleeding that you posted addresses the front left wheel twice and doesn't say anything about the rear left. Can you clarify this?
 
  #24  
Old 05-07-2016, 01:17 PM
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Huh... interesting mistake from the manuals... elsewhere, it reiterates it. the order should be this:
Start with Left Rear,
Then Right Rear,
Then Left Front,
Last, Right Front.
 
  #25  
Old 05-08-2016, 04:49 AM
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Thanks!
 
  #26  
Old 05-10-2016, 04:00 PM
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Originally Posted by zjinqui1k
Huh... interesting mistake from the manuals... elsewhere, it reiterates it. the order should be this:
Start with Left Rear,
Then Right Rear,
Then Left Front,
Last, Right Front.
sounds like that is in reference to a RH drive car correct?
I have always worked from the furthest from the master cylinder up, so:
Right Rear
Left Rear
Right Front
Left Front
 
  #27  
Old 05-11-2016, 06:08 AM
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On all my previous cars I would start with the wheel furthest away. However, the manuals for Volvo always state to start with the left rear.
 
  #28  
Old 05-11-2016, 07:33 AM
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Originally Posted by act1292
On all my previous cars I would start with the wheel furthest away. However, the manuals for Volvo always state to start with the left rear.
What he said. This comes from the USA greenbook service manuals, so it should be correct for left hand drive.
 
  #29  
Old 05-12-2016, 06:17 AM
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I always thought the reason for starting on the furthest wheel away was mainly to minimize on brake fluid consumption when bleeding. Given an unlimited supply of brake fluid, I really don't see how the order really matters.
 
  #30  
Old 05-13-2016, 05:18 AM
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My understanding was that you started with the wheel farthest from the master cylinder and worked your way to the closest. So, with 2 circuits to deal with, I imagine you could start with either rear wheel and move to the opposite front wheel and bleed one circuit at a time, or if you want to complicate things, start with any rear wheel, move on to the other rear wheel then move to the opposite corner of the first rear wheel then...

My point being that you start with the farthest and move to the closest on that particular circuit. Does that sound right?
 
  #31  
Old 05-13-2016, 06:39 AM
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Originally Posted by aznyaz
My point being that you start with the farthest and move to the closest on that particular circuit. Does that sound right?
That would correspond to what the Volvo manual states since the back wheels are on different circuits
 
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