Mikeo632 Posted October 25, 2019 Report Share Posted October 25, 2019 Hello all. My 2500 Estate has started hissing at me when I apply the brakes. My thinking is that this will be servo related. Apply brakes, get hissing, release brakes, hissing stops. Noise appears to be coming from drivers footwell area. Also getting a groaning/farting sound from the same area when brakes applied. Brakes initially work ok, but if I hold them on slightly down a hill, peddle becomes hard & braking deminishes/effort to brake increases (loss of vacuum?) If I pump tghe brake a few times with the engine off, then hold down the footbrake when starting, the peddle is hard, doesn't move down at all. Don't want to mess with this due to potential serious problems when driving! Have phoned around, Rimmers can do a servo, £204 incl plus a £100 exchange surcharge, Canley classics can get it rebuilt for £160 incl, but need my servo & it takes 5-6 weeks. Have seen the rebuild kits in the on-line shop. Anyone had any experience of doing this? I've never had a servo apart so have no idea of degree of difficulty or tools required? Anyone any other ideas to help me out?? Mike. Link to comment Share on other sites More sharing options...
poppyman Posted October 25, 2019 Report Share Posted October 25, 2019 Have you checked under the bonnet Mike for any air leaks? Tony. Link to comment Share on other sites More sharing options...
Pete Lewis Posted October 25, 2019 Report Share Posted October 25, 2019 bit cheaper http://www.ldpart.co.uk/shop/shop.php?c=viewproduct&pid=775&cat=30&sid=sid847a0019246620044860f65f16f992bf hardest job is getting the split pin out of the clevis /pedal end servos are pretyy easy to strip and rebuild , internal spring can be quite strong, youres has a leak from probably a split in the diaphragm so it needs a rapid fix on mine the whole platsic piston fractured coming into a roundabout, well we missed the bus just , need gorrila feet when it fails dont wait Pete Link to comment Share on other sites More sharing options...
Mikeo632 Posted October 25, 2019 Author Report Share Posted October 25, 2019 Hi. Tony: Have checked the pipe from the manifold to server, looks good all round. Pete: Will go for that if they can confirm that the servo shown via that link is the same as mine. The part number I keep coming up with is 518698. They're closed now, but will call them tomorrow! Mike. Link to comment Share on other sites More sharing options...
Pete Lewis Posted October 25, 2019 Report Share Posted October 25, 2019 Yes know thats a stag gamble as much of the car is the same there are many subtle changes that make strait swaps require a bit of home work the studs may be differing centres to take the split line m cyl. My 2000 with 14"wheels has stag disc and calipers and rear hand brake expanders gives extra 1/2" leverage of the cable I did get my servo from rimmers but 5year ago ..much less then . Search around give chris witor a call https://www.chriswitor.com/proddetail.php?prod=514750SH Link to comment Share on other sites More sharing options...
Mikeo632 Posted October 25, 2019 Author Report Share Posted October 25, 2019 Hi Pete. Tried to call Chris Witor as the "Go-To" option several times this morning, no joy. Hence desperately looking at all other suppliers! Makes it harder with me not having the servo off the car to make direct comparisons. will give them a call, see what they think. Mike. Link to comment Share on other sites More sharing options...
poppyman Posted October 25, 2019 Report Share Posted October 25, 2019 Have you tried these guy's Mike? http://www.quillertriumph.co.uk Tony. 1 Link to comment Share on other sites More sharing options...
thescrapman Posted October 26, 2019 Report Share Posted October 26, 2019 Past Parts in Bury st Edmunds. Link to comment Share on other sites More sharing options...
Pete Lewis Posted October 26, 2019 Report Share Posted October 26, 2019 agree there is the base servo complicated by mk1 mk2 stag influences and twin or single line mcyl fixings a kit is a relatively easy fit given a bit of patience and strong tea I would not discourage a kit fit. pete Link to comment Share on other sites More sharing options...
Pete Lewis Posted October 26, 2019 Report Share Posted October 26, 2019 give /try these a call http://www.powertrackbrakes.co.uk/index.html Link to comment Share on other sites More sharing options...
poppyman Posted October 26, 2019 Report Share Posted October 26, 2019 16 hours ago, poppyman said: Have you tried these guy's Mike? http://www.quillertriumph.co.uk Tony. So not a good choice Gully? Not heard much about them, just someone said they good for second hand bits. Is it best to avoid them ? Tony. Link to comment Share on other sites More sharing options...
Mikeo632 Posted October 26, 2019 Author Report Share Posted October 26, 2019 Unfortunately the LD servo is a stag item only (nice very helpful guys though!) Quillers don't have, so have bitten the bullit & ordered a service kit for my current servo. Link to comment Share on other sites More sharing options...
Pete Lewis Posted October 26, 2019 Report Share Posted October 26, 2019 if the co joining band is a push twist lock may take a good effort to start the short rotation to release the.......... Boing ? said zebedee Pete Link to comment Share on other sites More sharing options...
Mikeo632 Posted October 27, 2019 Author Report Share Posted October 27, 2019 Anyone know of any articles on how to strip/re-assemble a servo? Mike. Link to comment Share on other sites More sharing options...
Guest Posted October 27, 2019 Report Share Posted October 27, 2019 Hello Mike, If you decide not to go with the rebuild kit, try David Kingerley who stocks excellent spares and a lot of NOS OE equipment. He will be at Shepton Mallet and the NEC shows, over the next couple of weeks. https://www.obsoletecarspares.co.uk/ Regards. Richard. Link to comment Share on other sites More sharing options...
Pete Lewis Posted October 27, 2019 Report Share Posted October 27, 2019 https://www.buckeyetriumphs.org/brakes Once you start and part the two halves its pretty self obvious with most servos Pete Link to comment Share on other sites More sharing options...
PeteH Posted October 30, 2019 Report Share Posted October 30, 2019 Hi There is a half decent description of the servo, how it works and dismantling, on Pages 149 to 151 of my Vittese (Haynes) manual. I can try scanning it a post if it would help.? Pete Link to comment Share on other sites More sharing options...
Mikeo632 Posted November 1, 2019 Author Report Share Posted November 1, 2019 Thanks for all of your help. I spent a pleasant afternoon removing the servo, splitting the canister & replacing all of the bits. I was very surprised as to how easy removing the servo was, once the underdash shelf was removed, easy access to all the required bits. Shows good thought in design. As suggested, once taken (carefully) apart, most of it was common sense. I found a small split in the diaphragm, hopefully that was the issue. The hardest part was twisting the 2 halves of the canister back together....it won't quite twist as far as it was originally, but I will damage the canister if I'm not carefull. One worry. when taking apart, a pool of what looked like oil came out from the canister, quite a lot actually. I almost had a deep end & shallow end in the canister. Can't see any reason for this, it didn't look or smell like brake fluid, but reckon it must be? The pipe from the manifold to the servo is clean & dry inside. The only thing I can think of is that there has possibly been a problem with the master cylinder in the past, which has been resolved, but the fluid remained in the servo? Any thoughts of anything else I should be looking at before I fire her up? Pics attached. Mike Link to comment Share on other sites More sharing options...
Pete Lewis Posted November 1, 2019 Report Share Posted November 1, 2019 Failed front seal Brake fluid is supposed to leak from a nitch in the front face amd run down the outside of the can. Thats a heavy residue and probably from fueling being drawn into the chamber over the years Remember every servo operation the vacuum is developed from the air/ fuel side of the manifold which ends up inside the canister Pete Link to comment Share on other sites More sharing options...
Mikeo632 Posted November 2, 2019 Author Report Share Posted November 2, 2019 Good point, makes sense, thanks. Brakes are good, far better than when I picked the car up & drove home, so all told, a good result me thinks. M. 1 Link to comment Share on other sites More sharing options...
Mikeo632 Posted November 6, 2019 Author Report Share Posted November 6, 2019 On 25/10/2019 at 19:19, Pete Lewis said: Yes know thats a stag gamble as much of the car is the same there are many subtle changes that make strait swaps require a bit of home work the studs may be differing centres to take the split line m cyl. My 2000 with 14"wheels has stag disc and calipers and rear hand brake expanders gives extra 1/2" leverage of the cable I did get my servo from rimmers but 5year ago ..much less then . Search around give chris witor a call https://www.chriswitor.com/proddetail.php?prod=514750SH Pete: Once you have 14 or 15" wheels, is the upgrade to Stag calipers/pads/discs a straight swap or do you have to mess with the caliper brackets? M. Link to comment Share on other sites More sharing options...
thescrapman Posted November 6, 2019 Report Share Posted November 6, 2019 Stag brakes direct fit under the bigger wheels, nothing else to change only issue Is price of a set of calipers, offset by the much cheaper discs. Link to comment Share on other sites More sharing options...
Pete Lewis Posted November 7, 2019 Report Share Posted November 7, 2019 thats right they fit the std mount, and Colins on the ball the stag discs are half the price of saloon ones i got calipers exchanged as a straight swop , new hoses i remember i did buy some 2000 rear drums but they had been machined in a lathe chuck and had serious 3 lobe thruppenny bit bake surface and had to be removed , cheapish and nasty you definitiely cant do this stag upgrade with 13" wheels unless you want a lot of noise and sparks !!! pete Link to comment Share on other sites More sharing options...
dougbgt6 Posted November 7, 2019 Report Share Posted November 7, 2019 Having installed a new servo I remember the instructions recommended a long pipe between manifold and servo to go below the level of the servo so that there was effectively a U bend to collect fluid. Doug Link to comment Share on other sites More sharing options...
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