bengaku Posted July 18, 2017 Report Share Posted July 18, 2017 Hi hope this is the right place for this .I havebeen sorted out my 68 Herald so finally got the engine running and ticking over on idle.So went to take it for a test drive went to reverse out the drive stopped to clip down bonnet and car wouldnt engage any gear taking the clutch pedal up and even when foot is fully off car still running?So did a bit of checking seems it might need bled question i have is where is the valve for this it seems according to the haynes manual its right underneath the engine .Which would mean having somehow to lift the car up enough to get not only under it but also have enough room to bled it .So any help would be really appreciated. Thsnks for looking regards Paul Link to comment Share on other sites More sharing options...
Pete Lewis Posted July 18, 2017 Report Share Posted July 18, 2017 You can bleed it from under the car you may need to lift it safely to get under , two wheels up a kerb may work if you have no controlable drive if this is not possible then its time to take the gearbox tunnel, cover out and bleed from inside the car the clutch slave is fitted into a clamp bracket on the clutch housing along side the gearbox approx behind the starter motor you will see the metal pipe feeding it. the bleed screw should be above the pipe fitting screwed into the end of the cylinder undo it a half turn and get the pedal pressed to expell any air, a short tube on the nipple into a jam jar or bottlle to catch the fluid use a dot4 fluid . Link to comment Share on other sites More sharing options...
Pete Lewis Posted July 18, 2017 Report Share Posted July 18, 2017 Just a thought reading again, engine running , you can engage gears , but no drive that sound's more like the slave is siezed, keeping the clutch disengaged regardless of pedal action. If you cant engage gears with engine running then its bleed or other hydraulic failure enven the dreaded withdrawl pivot pin has dropped out Link to comment Share on other sites More sharing options...
bengaku Posted July 18, 2017 Author Report Share Posted July 18, 2017 The slave cylinder is that the one top of the engine bay next to brake cylinder if yes that works fine no problems with the linkage or leaking regards Paul Link to comment Share on other sites More sharing options...
bengaku Posted July 18, 2017 Author Report Share Posted July 18, 2017 Pivot pin where is that located? Regards Paul Link to comment Share on other sites More sharing options...
Mat Posted July 18, 2017 Report Share Posted July 18, 2017 The slave cylinder is that the one top of the engine bay next to brake cylinder if yes that works fine no problems with the linkage or leaking regards Paul No, it is the one on the gearbox/bell housing. Pivot pin same place. Link to comment Share on other sites More sharing options...
Pete Lewis Posted July 19, 2017 Report Share Posted July 19, 2017 if you look down the drivers O/S back of the engine , see the clutch housing towards the gearbox there is a hole, often covered in old oily dust its a hole about 8mm dia , if a thin screwdriver drops in its missing if it stops a few mm in the hole its OK in the hole should be a pin which goes right through the withdrawal lever . its held in place by a crinkle bush called a tolereance ring these break up and the pin has no head on it so as you use the clutch it falls out on the road generally followed by a hard pedal and no clutch operation and to be corrective the slave is the cylinder that pushes the clutch withdrawl mechanism attached to the gearbox or hsg. a master cylinder is the one on the baulkhead and is the primary unit depressed by the pedals Link to comment Share on other sites More sharing options...
Colin Lindsay Posted July 19, 2017 Report Share Posted July 19, 2017 Try Chic Doig for the uprated pivot pin kit, that can't drop out due to a large head like a nail. I've fitted one some years ago to one car and am currently just about to order another for the 1200 Herald. Link to comment Share on other sites More sharing options...
sulzerman Posted July 21, 2017 Report Share Posted July 21, 2017 Canley's also sell the pivot pin with a large head that can't drop out Link to comment Share on other sites More sharing options...
bengaku Posted July 22, 2017 Author Report Share Posted July 22, 2017 Well managed to get to work on the car took off the plastic housing so I could get to the bled screw so got a length of tubing put the end into a bottle of dot4 and bled the system well at least I thought i did anyway car did after a bit of pumping the pedal go into gear then wouldn't rengaged the gears the drive shaft moves a little but clutch pedal still can go all the way up and car doesnt stall out ?so any other reason that it wont engage gears is it possible that it still has trapped air.Thanks for looking regards Paul Link to comment Share on other sites More sharing options...
sulzerman Posted July 22, 2017 Report Share Posted July 22, 2017 Hi Paul They can be a pain to bleed sometimes, make sure the bleed nipple is on the top of the cylinder above the pipe. If not simply swap them round. Also worth checking behind the rubber dust cover on the cylinder for leaks, any cruddy white bits mean its past it best and needs replacing. Hope this helps Link to comment Share on other sites More sharing options...
Pete Lewis Posted July 22, 2017 Report Share Posted July 22, 2017 Just to be clear on what you are saying the clutch gives no drive with engine is running yes you have managed to select a gear yes foot off the pedal yes You get no drive to the wheels yes or you cant engage any gear with engine idleing there is no resisitance when you press the pedal Link to comment Share on other sites More sharing options...
bengaku Posted July 22, 2017 Author Report Share Posted July 22, 2017 I can select gears while engine is running the drive shaft will have slight movement and the car appears to move if only slightly but then nothing and it wont stall outeven with foot fully off clutch pedal bled nipple is on top of cylinder Link to comment Share on other sites More sharing options...
bengaku Posted July 22, 2017 Author Report Share Posted July 22, 2017 Also when i open up bled nipple and push down on pedal it does force fluid through tube as I have used clear tubing Link to comment Share on other sites More sharing options...
sulzerman Posted July 22, 2017 Report Share Posted July 22, 2017 Hi If you can engage gears but no drive sounds like the clutch is slipping. Need a new clutch I think. Link to comment Share on other sites More sharing options...
Pete Lewis Posted July 23, 2017 Report Share Posted July 23, 2017 look underneath at the propshaft when idleing in a gear , if its turning and the cars stationery you have sheared the short output shaft on the diff easy to replace providing the broken off section can be puled out of the diff its drop the drive shaft coupling, undo the 4 socket cap screws remove the small housing and coupling assy it has a short splined shaft , if its failed the remains are stuck in the diff sun gear , may need a magnet to get it out theres no way of telling which of the 2 may have failed this may sound extreme but it happens you dont need to drop the diff to change these Link to comment Share on other sites More sharing options...
bengaku Posted July 23, 2017 Author Report Share Posted July 23, 2017 When i engage a gear the drive shaft moves only slighty but the car did go into gear and did move fine but then stopped again and wouldnt engage gears so it maybe the clutch slipping or still air in system but think the driveshaft is fine although i did notice the bolts were a bit loose ? Link to comment Share on other sites More sharing options...
Colin Lindsay Posted July 23, 2017 Report Share Posted July 23, 2017 Sounds like a burned out or oil-fouled clutch.... grips at first then slides. In any case it sounds like the clutch plate is not engaging the flywheel so as earlier posters have suggested check that the slave cylinder is not stuck in the fully depressed position. It's only held on by two bolts to the side of the bellhousing and a pipe into the other end. Link to comment Share on other sites More sharing options...
Pete Lewis Posted July 23, 2017 Report Share Posted July 23, 2017 you are in gear engine running You must check if the propshaft is tuning you have a diff driveshaft problem if engine runs, in gear , but prop is not turning you have a clutch problem pete Link to comment Share on other sites More sharing options...
bengaku Posted July 29, 2017 Author Report Share Posted July 29, 2017 Took this picture im trying to work out if this is the hole where the pin is located if yes then it is missing as screw driver goes all the way in so how would i sort this Thanks for looking regards Paul Link to comment Share on other sites More sharing options...
Adrian Cooper Posted July 29, 2017 Report Share Posted July 29, 2017 No, that's not the hole you want. The pivot pin fits in a vertical hole on the other side of the bellhousing Link to comment Share on other sites More sharing options...
Pete Lewis Posted July 29, 2017 Report Share Posted July 29, 2017 No wrong side of car, the pin is vertical and drivers side You must tell us if the prop shaft is turning with , in gear engine running hand brake on foot off clutch yes or no pete Link to comment Share on other sites More sharing options...
bengaku Posted July 29, 2017 Author Report Share Posted July 29, 2017 The propshaft turns a little but not fully and car wont go into gear also can take foot fully off pedal car wont stall only thing that happens is engine revs go down a little Link to comment Share on other sites More sharing options...
Pete Lewis Posted July 29, 2017 Report Share Posted July 29, 2017 Ok if you are in gear the prop is not rotating engine idling ..... so you have a slipping clutch this can be the hydraulics are holding the clutch disengaged so there is no drive to the gearbox then to complicate thoughts you mention it wont go in gear will it engage a gear engine off but not engage engine running, which now means the clutch is Not clearing we then have the opposite of ....slipping all sounds a bigger problem is appearing pete Link to comment Share on other sites More sharing options...
bengaku Posted July 29, 2017 Author Report Share Posted July 29, 2017 Sorry think you missunderstand me car goes into gear engine running or not however when lets say i put car in reverse the car wont move even with foot fully off clutch pedal and hand brake off Link to comment Share on other sites More sharing options...
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