Rebuilding the ABS pump
#26
RX-7 Bad Ass
iTrader: (55)
You're doing the lord's work here!
If you can get it to an inventory of seals needed to rebuild, that would be AMAZING. This is going to be a problem more of us run into as time goes along.
Dale
If you can get it to an inventory of seals needed to rebuild, that would be AMAZING. This is going to be a problem more of us run into as time goes along.
Dale
#27
Got some more rings in
On the right are the new packings I ordered with the old on the left. The 014 packing for the large end of the valve is correct while the 015 was too small. The new 012 for the center was on the money as well. The 009 quad ring, however, was too big. I need to order a 008 and possibly a 007 and check the fitment on those. I received squarecut 009s for the tops of the solenoids, however I'll have to pull the manifold back apart to check the fitment on them.
Matt
On the right are the new packings I ordered with the old on the left. The 014 packing for the large end of the valve is correct while the 015 was too small. The new 012 for the center was on the money as well. The 009 quad ring, however, was too big. I need to order a 008 and possibly a 007 and check the fitment on those. I received squarecut 009s for the tops of the solenoids, however I'll have to pull the manifold back apart to check the fitment on them.
Matt
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Gen2n3 (12-07-17)
#29
I haven't had any recent updates. This project is very casual so updates are slow on it. I still need to order the quad rings in new sizes to check fitment. I'll probably order some today so I don't forget :P. I'm close to having a completed list though!
Matt
Matt
#30
My brakes pedal goes all the way to the floor... I'm just gonna throw the ABS pump away and go with napa auto parts lines to cut/bend/flange or buy a expensive cool kit? I dunno... CR rex can you recommend a cool kit?
#32
RX-7 Bad Ass
iTrader: (55)
Gonna bump this up for some lovin'. Any news on this?
Dale
Dale
#33
Always Bad Advice
I'm just going to throw this monkey wrench in here.
Are we sure that this Japanese ABS doesn't use JIS B2401 sized O-Rings instead of good old American AS 568 sized O-Rings? Many are interchangeable, but a few are unique, check out this cross reference chart.
Are we sure that this Japanese ABS doesn't use JIS B2401 sized O-Rings instead of good old American AS 568 sized O-Rings? Many are interchangeable, but a few are unique, check out this cross reference chart.
#34
Placed another order for some more O rings.
Now that I don't daily drive the Rx7 and I had my back surgery, its a bit easier to work on the car now :P. Went to take the rx7 for a drive for the first time in maybe 2 months and notied the brake fluid was low [enough to turn on the light!] and that my ABS pump is, once again, wet. Fed up, I placed an order for all the o rings and I'm finally gonna rebuild this thing before the next track day.
If all works out, I'll have a complete list.
Matt
Now that I don't daily drive the Rx7 and I had my back surgery, its a bit easier to work on the car now :P. Went to take the rx7 for a drive for the first time in maybe 2 months and notied the brake fluid was low [enough to turn on the light!] and that my ABS pump is, once again, wet. Fed up, I placed an order for all the o rings and I'm finally gonna rebuild this thing before the next track day.
If all works out, I'll have a complete list.
Matt
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tomatoto (10-16-19)
#35
Senior Member
iTrader: (7)
Placed another order for some more O rings.
Now that I don't daily drive the Rx7 and I had my back surgery, its a bit easier to work on the car now :P. Went to take the rx7 for a drive for the first time in maybe 2 months and notied the brake fluid was low [enough to turn on the light!] and that my ABS pump is, once again, wet. Fed up, I placed an order for all the o rings and I'm finally gonna rebuild this thing before the next track day.
If all works out, I'll have a complete list.
Matt
Now that I don't daily drive the Rx7 and I had my back surgery, its a bit easier to work on the car now :P. Went to take the rx7 for a drive for the first time in maybe 2 months and notied the brake fluid was low [enough to turn on the light!] and that my ABS pump is, once again, wet. Fed up, I placed an order for all the o rings and I'm finally gonna rebuild this thing before the next track day.
If all works out, I'll have a complete list.
Matt
Thanks dude!!
Nick
#36
Super Moderator
iTrader: (1)
Hi guys,
Funny that this topic comes up in the FD section because the exact same subject came up in the FC section. Here is the FC thread: https://www.rx7club.com/2nd-generati...t-fix-1100699/ Maybe a few of the o-rings from that thread could be applied to this thread?
Cheers,
George
Funny that this topic comes up in the FD section because the exact same subject came up in the FC section. Here is the FC thread: https://www.rx7club.com/2nd-generati...t-fix-1100699/ Maybe a few of the o-rings from that thread could be applied to this thread?
Sorry guys, i didn't get any notification that people has responded to this! Mcmaster part numbers are:
Multipurpose O-Ring Steam-Resistant EPDM, 2mm Wide, 17mm ID : 1172N65
Multipurpose O-Ring Steam-Resistant EPDM, 1.5mm Wide, 5mm ID : 1172N44
Multipurpose O-Ring Steam-Resistant EPDM, 2mm Wide, 4mm ID : 1172N77
x-profile, buna-n, 2.5mm x 17mm : 1200N166
these come in packs of 100 with the exception of the x-rings which are still a 10 pack. Order 1 package and you'll be set for life
I sold the car a few months ago, but as of that time it was dry as a bone.
Multipurpose O-Ring Steam-Resistant EPDM, 2mm Wide, 17mm ID : 1172N65
Multipurpose O-Ring Steam-Resistant EPDM, 1.5mm Wide, 5mm ID : 1172N44
Multipurpose O-Ring Steam-Resistant EPDM, 2mm Wide, 4mm ID : 1172N77
x-profile, buna-n, 2.5mm x 17mm : 1200N166
these come in packs of 100 with the exception of the x-rings which are still a 10 pack. Order 1 package and you'll be set for life
I sold the car a few months ago, but as of that time it was dry as a bone.
George
Last edited by Gen2n3; 11-22-17 at 12:30 PM. Reason: Typo correction
#37
Super Moderator
iTrader: (1)
I'm just going to throw this monkey wrench in here.
Are we sure that this Japanese ABS doesn't use JIS B2401 sized O-Rings instead of good old American AS 568 sized O-Rings? Many are interchangeable, but a few are unique, check out this cross reference chart.
Are we sure that this Japanese ABS doesn't use JIS B2401 sized O-Rings instead of good old American AS 568 sized O-Rings? Many are interchangeable, but a few are unique, check out this cross reference chart.
You certainly threw in the monkey wrench! Do you have a valid link to that chart? It gives me the dreaded "404...not found" error.
Cheers,
George
#40
Hi guys,
Funny that this topic comes up in the FD section because the exact same subject came up in the FC section. Here is the FC thread: https://www.rx7club.com/2nd-generati...t-fix-1100699/ Maybe a few of the o-rings from that thread could be applied to this thread?
Cheers,
George
Funny that this topic comes up in the FD section because the exact same subject came up in the FC section. Here is the FC thread: https://www.rx7club.com/2nd-generati...t-fix-1100699/ Maybe a few of the o-rings from that thread could be applied to this thread?
Cheers,
George
Thanks for that post!!
matt
#41
Super Moderator
iTrader: (1)
Matt,
No problem, glad to lend a hand! I wonder if contacting ORings, Inc and send them samples would pay off? That may give you direct feedback, faster turnaround times, and near perfect replacement o-rings. It never hurts to ask for help, right?
Cheers,
George
No problem, glad to lend a hand! I wonder if contacting ORings, Inc and send them samples would pay off? That may give you direct feedback, faster turnaround times, and near perfect replacement o-rings. It never hurts to ask for help, right?
Cheers,
George
#42
If my first attempt fails, I’ll see if they can lend a hand with sizing. I work with a lot of fluid based systems and packings so I’m not really a stranger to the concept. As soon as I feel that it is beyond my level of expertise (interference fit tolerances, metric vs standard etc) then I’ll ask the questions. But sometimes it’s fun to do things on your own first :P Not to mention O rings are dirt cheap.
#43
The cross-eyed kid
iTrader: (2)
#45
I know some of you have been waiting awhile for this. Think I have them nailed down. How nasty my pump was, old packings vs new, etc. going to finish reassembling it in a bit. Did something stupid and didn’t track which solenoid was for left/right/rear. So I need to hit up a local friend so I can check his for locations
Last edited by Mrmatt3465; 12-01-17 at 02:05 PM.
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Gen2n3 (12-01-17)
#46
Senior Member
iTrader: (7)
My pump wasn't leaking but it was causing my front calipers to stick after pressing the pedal. Do you think replacing these o-rings will fix my problem? I was thinking something was seized or stuck. The weird thing is my pump is beautiful, low mileage -- but it's got an issue and your pump looks like that and just leaks lol
Nick
Nick
#47
Super Moderator
iTrader: (1)
Matt,
Your are doing very well on the repair. Thanks for taking those photos! Best of luck identifying the left, right, and rear solenoids. I can't wait to see it all done.
Cheers,
George
Your are doing very well on the repair. Thanks for taking those photos! Best of luck identifying the left, right, and rear solenoids. I can't wait to see it all done.
Cheers,
George
#48
gross polluter
iTrader: (2)
My pump wasn't leaking but it was causing my front calipers to stick after pressing the pedal. Do you think replacing these o-rings will fix my problem? I was thinking something was seized or stuck. The weird thing is my pump is beautiful, low mileage -- but it's got an issue and your pump looks like that and just leaks lol
Nick
Nick
#49
Took a few minutes of reviewing the wiring diagram to figure out which solenoid was what. The upper manifold is marked for FR, FL, and R as well. Not a big deal if you forget to keep track of what is what.
Not too hard to take it apart and put it back together. Used some leftover caliper rebuild grease to lube up all the o rings and put everything back together. Found out you can disassemble to solenoids too to clean the metal casings as well. I just hit everything with a scotch brite scuffing pad to take surface corrosion off. Brought some youth back to it too. It’s rejnstalled in the car, but I need to go buy some brake fluid. I’ll get some fresh bottles of RBF600 tomorrow and bleed/leak check this thing. More updates then!!
Matt
Not too hard to take it apart and put it back together. Used some leftover caliper rebuild grease to lube up all the o rings and put everything back together. Found out you can disassemble to solenoids too to clean the metal casings as well. I just hit everything with a scotch brite scuffing pad to take surface corrosion off. Brought some youth back to it too. It’s rejnstalled in the car, but I need to go buy some brake fluid. I’ll get some fresh bottles of RBF600 tomorrow and bleed/leak check this thing. More updates then!!
Matt
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Gen2n3 (12-07-17)
#50
RX-7 Bad Ass
iTrader: (55)
Awesome! Hope to hear some good news soon!
Dale
Dale