terrier989
Member
thanks Nodge,
re servo nope, this is the 1st servo change I have had the car from new.
Quote
"It is possible that the servo is now different and the listing showing the same servo from 96 to 2006 is wrong. The servo changed in ~ 2000 from a single diaphragm to twin diaphragm type. The master cylinder changed too a remote reservoir type at the same time.
I see your MC is an early type, so you should have solid discs and single diaphragm servo. Like I said earlier, maybe your car had the later servo from a previous replacement? Going from a double diaphragm to single diaphragm would give a noticeable increase in pedal effort."
A) Microcat listing shows both parts SJG100220 and SJG000010 as valid from 1996-2006
B) I can see the difference in MC and yes the one I have would have the SJG100220 servo
C) My original servo was definitely fatter front to back than this one but could not have been an SJG000010 dual diaphram due to MC type, if I had the later servo wouldn't I have to have had the remote reservoir as well
D) As said earlier I don't know for certain what the original part number was but now see there is an SJB000010 see this link and image https://www.ebay.ie/itm/122462750230 as well as SJG000010 The SJB doesn't have the vac pipe hole and two MC studs in a straight diagonal line so can't be same thing
I have done the testing as you suggested and both tests are ok.
So I am back to square one I had DEEP/FAT servo (part number unknown,unsure) now have a skinny one everything appears to work but braking is nt as powerful as before??? Looks like I am going to assume there is sommething wrong with servo and get it changed underwarranty.
re servo nope, this is the 1st servo change I have had the car from new.
Quote
"It is possible that the servo is now different and the listing showing the same servo from 96 to 2006 is wrong. The servo changed in ~ 2000 from a single diaphragm to twin diaphragm type. The master cylinder changed too a remote reservoir type at the same time.
I see your MC is an early type, so you should have solid discs and single diaphragm servo. Like I said earlier, maybe your car had the later servo from a previous replacement? Going from a double diaphragm to single diaphragm would give a noticeable increase in pedal effort."
A) Microcat listing shows both parts SJG100220 and SJG000010 as valid from 1996-2006
B) I can see the difference in MC and yes the one I have would have the SJG100220 servo
C) My original servo was definitely fatter front to back than this one but could not have been an SJG000010 dual diaphram due to MC type, if I had the later servo wouldn't I have to have had the remote reservoir as well
D) As said earlier I don't know for certain what the original part number was but now see there is an SJB000010 see this link and image https://www.ebay.ie/itm/122462750230 as well as SJG000010 The SJB doesn't have the vac pipe hole and two MC studs in a straight diagonal line so can't be same thing
I have done the testing as you suggested and both tests are ok.
So I am back to square one I had DEEP/FAT servo (part number unknown,unsure) now have a skinny one everything appears to work but braking is nt as powerful as before??? Looks like I am going to assume there is sommething wrong with servo and get it changed underwarranty.
terrier989
Member
Thanks here my vin is YA548901 so which part shd I be using my vehicle is a 2000 july, the cross over occurred during 2000 I believe, the supplied SJG100220 is physically quite different to my original and does not brake as powerfully. many supplier databases reflect this with 1996 to 1999/2000 and 2000/2001 to 2007 implying 2000 could be either part.
cheers
GrumpyGel
Well-Known Member
There appears to be a lot of "I seem to remember" on this thread - eg whether disks were vented or not. Given your VIN number your car "should" have the the thinner SJG100220 servo and solid discs and the WABCO ABS system. The MY01 cars would have had the SJG000010 servo, vented disks and Teves ABS system.
Is it a '99 car or Aug 2000? There looks to be both quoted.
If it is Aug 2000 that is right on the cross over to the MY01 1A000001 VIN cars. I wonder if some of the later parts were installed in a production cross over.
I'm not sure if the 2 servos are fully interchangeable - eg are the pipes to ABS modulator starting points in the same location? Presumably the wider dual servo pipes would start further forward. The pipes for the 2 ABS systems would definitetly not be interchangeable, therefore there would not be a desire to maintain compatibility between servos.
What ABS system do you have installed on the car? I don't know about the Teves system, but the WABCO ones have WABCO written in blue (I think) on the top of them.
It may be an easy job to swap between MY00 and MY01 servos and Disks - but it would not be an easy job to switch ABS systems. If you do happen to have a Teves ABS, then I'm sure you would have had the MY01 servo and disks - but unlikely if you have the WABCO - especially if the car was built in '99.
Is it a '99 car or Aug 2000? There looks to be both quoted.
If it is Aug 2000 that is right on the cross over to the MY01 1A000001 VIN cars. I wonder if some of the later parts were installed in a production cross over.
I'm not sure if the 2 servos are fully interchangeable - eg are the pipes to ABS modulator starting points in the same location? Presumably the wider dual servo pipes would start further forward. The pipes for the 2 ABS systems would definitetly not be interchangeable, therefore there would not be a desire to maintain compatibility between servos.
What ABS system do you have installed on the car? I don't know about the Teves system, but the WABCO ones have WABCO written in blue (I think) on the top of them.
It may be an easy job to swap between MY00 and MY01 servos and Disks - but it would not be an easy job to switch ABS systems. If you do happen to have a Teves ABS, then I'm sure you would have had the MY01 servo and disks - but unlikely if you have the WABCO - especially if the car was built in '99.
Nodge68
Well-Known Member
Yours is an early car (pre-1A chassis), so the early type brakes will be fitted.
jamesmartin
Well-Known Member
its not uncommon when fitting new servos on other models that the servo push rod needs adjusting either to reduce pedal travel or to allow some free play the other way
terrier989
Member
Nodge & Grumpy,
Every image I find for SJB or SJG 000010 has the same orientation of the MC studs and vac inlet and is as per the dual diaphram layout, I did find one which is like mine but I suspect the guy was not using an actual image of what he was selling
checked ABS unit as you both suspected I have a WABCO ABs unit
Nodge am now running the tyres at 30psi as per your post b4, wouldnl' this be more likely to cause lockup and therefore bring on ABS
All I can think of is the earlier model or different manufacturers models of the SJG100220 were different to each other and to the current ones, am just going to ask for a replacement and see what happens, if I can get a replacement will let you know the result
The chassis numbering did confuse me no end I thought 1A000001 was the 1st of the 1996 ending at YA9999999 in 2000, so presumably the 1996 sequence started at AA000001 went on YA99999 and the 2001 started at 1A000001 and could have gone on to 9A999999
thanks to everyone for their help
terrier
Every image I find for SJB or SJG 000010 has the same orientation of the MC studs and vac inlet and is as per the dual diaphram layout, I did find one which is like mine but I suspect the guy was not using an actual image of what he was selling
checked ABS unit as you both suspected I have a WABCO ABs unit
Nodge am now running the tyres at 30psi as per your post b4, wouldnl' this be more likely to cause lockup and therefore bring on ABS
All I can think of is the earlier model or different manufacturers models of the SJG100220 were different to each other and to the current ones, am just going to ask for a replacement and see what happens, if I can get a replacement will let you know the result
The chassis numbering did confuse me no end I thought 1A000001 was the 1st of the 1996 ending at YA9999999 in 2000, so presumably the 1996 sequence started at AA000001 went on YA99999 and the 2001 started at 1A000001 and could have gone on to 9A999999
thanks to everyone for their help
terrier
terrier989
Member
Update LR Coventry say my original part was SJG100020 however have asked them to confrm or send diag/image as that part does not come up on a google search
GrumpyGel
Well-Known Member
Yeh, that is very confusing, took me a while to get my head around it to.
I'm sure SJG100020 is just a typo of SJG100220 and they will have been going by your VIN number just like everyone else.
terrier989
Member
Grumpy,
I agree re typo
terrier
I agree re typo
terrier
terrier989
Member
OOPs
pols never closed off, I asked for a different make they didn't have one so I got a full reunf=d bought a genuine TRW fault solved,
terrier
pols never closed off, I asked for a different make they didn't have one so I got a full reunf=d bought a genuine TRW fault solved,
terrier
