fender1234 Posted January 15, 2009 Share Posted January 15, 2009 Having noticed a leak under the thermostat housing yesterday and the housing threads for the thermostat are gone so i decided to replace the gasket and the housing today as i had a spare, but it didnt quite go to plan after 2 of the bolt heads snapped the third just came out, so my new plan was to slide the housing off and put a stud extractor on the 2 bolts and take them out but the housing dosent want to slide off the bolts,ive managed to break the seal between the housing and the cylinder head but cant get it off. Any ideas? oh and my mot is on moday Quote Link to comment Share on other sites More sharing options...
crwoody Posted January 15, 2009 Share Posted January 15, 2009 I'm afraid it sounds like its coming down to a "Brute Force & Ignorance" approach needed here, with plenty of persuading. I guess the bolts have corroded to the extent where they've become "at-one" with the housing casting, maybe plenty of WD40 and a good "wiggling" might shift it, trouble is of course that you dont want to damage the mounting face by levering it off directly. At least you dont have to worry too much about damaging the housing, assuming your spare is a complete one. Quote Link to comment Share on other sites More sharing options...
Badger90 Posted January 15, 2009 Share Posted January 15, 2009 Having noticed a leak under the thermostat housing yesterday and the housing threads for the thermostat are gone so i decided to replace the gasket and the housing today as i had a spare, but it didnt quite go to plan after 2 of the bolt heads snapped the third just came out, so my new plan was to slide the housing off and put a stud extractor on the 2 bolts and take them out but the housing dosent want to slide off the bolts,ive managed to break the seal between the housing and the cylinder head but cant get it off. Any ideas? oh and my mot is on moday try little heat and poor water on the hot bit. works a treat with me. Quote Link to comment Share on other sites More sharing options...
fender1234 Posted January 15, 2009 Author Share Posted January 15, 2009 ive soaked it wd40, hit it in every direction and tryed levering it off it would seem the housing has welded itself to the bolts. Quote Link to comment Share on other sites More sharing options...
western Posted January 15, 2009 Share Posted January 15, 2009 alloy to steel = corrosion, common fault with bits like that above, if you can get a hacksaw blade between the housing & head, that would be the best way to remove the housing then use the extractor on the leftovers of the bolts. Quote Link to comment Share on other sites More sharing options...
rope runner Posted January 15, 2009 Share Posted January 15, 2009 Try useing angle grinder or something like a dremil grinder and grind the housing away down the side of the bolts untill you get to the bolt . This will realease some of the housings grip on the bolts also the build up of heat helps as well . try not to get too close to the head though . You will then still have the full length of the bolts to grip on to get them out. Another option might be to use a centre punch on the housing down the sides of the bolts this sometimes spreads the housing enough to realease it . Quote Link to comment Share on other sites More sharing options...
fender1234 Posted January 16, 2009 Author Share Posted January 16, 2009 cheers for the advice everyone i'll try out each idea tomorrow and let you know how i get on. Western i want to try and avoid cutting the bolt flush with the head because my stud extractor works by fitting over whatever is sticking out so i'd like to try and keep some of the bolt sticking out. Quote Link to comment Share on other sites More sharing options...
western Posted January 16, 2009 Share Posted January 16, 2009 cheers for the advice everyone i'll try out each idea tomorrow and let you know how i get on.Western i want to try and avoid cutting the bolt flush with the head because my stud extractor works by fitting over whatever is sticking out so i'd like to try and keep some of the bolt sticking out. Yep can see the logic in that, levering it off or cutting the stat housing off the bolt shanks wil be probably the only way. Quote Link to comment Share on other sites More sharing options...
fender1234 Posted January 16, 2009 Author Share Posted January 16, 2009 Yep can see the logic in that, levering it off or cutting the stat housing off the bolt shanks wil be probably the only way. when i eventually get the thing off is there some sort of grease I can put on the new bolts to stop them seizing like this again? Quote Link to comment Share on other sites More sharing options...
western Posted January 16, 2009 Share Posted January 16, 2009 anything you apply to the bolt shanks will have to be suitable for use on alloy & steel & be heat resistant, probably copaslip would do the job. Quote Link to comment Share on other sites More sharing options...
fender1234 Posted January 17, 2009 Author Share Posted January 17, 2009 managed to get it all sorted this morning I deceided to use westerns idea of cutting it off but i managed to leave enough thread to get mole grips on it and undo. cheers for all the advice everyone Quote Link to comment Share on other sites More sharing options...
western Posted January 17, 2009 Share Posted January 17, 2009 good to know it was a success. Quote Link to comment Share on other sites More sharing options...
fender1234 Posted January 18, 2009 Author Share Posted January 18, 2009 does anyone know the part number for the gasket that joins the thermostat housing to the cylinder head? its a discovery 200tdi engine. Quote Link to comment Share on other sites More sharing options...
western Posted January 18, 2009 Share Posted January 18, 2009 Microcat shows ETC8007 gasket thermostat housing to head. Quote Link to comment Share on other sites More sharing options...
fender1234 Posted January 19, 2009 Author Share Posted January 19, 2009 Microcat shows ETC8007 gasket thermostat housing to head. ok cheers Quote Link to comment Share on other sites More sharing options...
rallycinq Posted January 19, 2009 Share Posted January 19, 2009 ok cheers Or cornflake packet and ball pien hammer. Cheers David Quote Link to comment Share on other sites More sharing options...
fender1234 Posted January 19, 2009 Author Share Posted January 19, 2009 bad news having bought the gsket today and putting it all together it still leaks and it would seem it is not leaking from that gasket. On top of the timing case below the thermostat housing the coolant seems to be coming up and leaking out, dont know if ive managed to explain this very well but i have no idea what gasket or seal i need to change to sort this one out. Quote Link to comment Share on other sites More sharing options...
western Posted January 19, 2009 Share Posted January 19, 2009 probably the water pump to timing case gasket leaking then. Quote Link to comment Share on other sites More sharing options...
kiall Posted January 19, 2009 Share Posted January 19, 2009 does the 200tdi have the same kinda p gasket setup as a 300tdi possible that if so Quote Link to comment Share on other sites More sharing options...
stevegibbs Posted January 19, 2009 Share Posted January 19, 2009 If it is the thin paper gaskit at the back of the timing cover to block fitting it a big job which you could do when the timing belt is due. In the past i have had some joy with ‘wonderweld’ it lasted until i was ready to do the job properly. But please follow the instructions on the bottle and flush all the antifreeze out completely Quote Link to comment Share on other sites More sharing options...
fender1234 Posted January 19, 2009 Author Share Posted January 19, 2009 heres a picture of where it apears to be coming from, it seems to be rising out of the the joint between the timing case and the engine. Quote Link to comment Share on other sites More sharing options...
stevegibbs Posted January 19, 2009 Share Posted January 19, 2009 give it a good clean to make sure its not coming from elseware, hose clip cut in hose etc then if its what i think it is you might want to read my last massage agian. its just one of those landrover jobs.....again Quote Link to comment Share on other sites More sharing options...
western Posted January 19, 2009 Share Posted January 19, 2009 timing case to block gasket leaking by the lok of that picture, either fix it now or stopleak & fix it when the timing belt is next replaced. Quote Link to comment Share on other sites More sharing options...
fender1234 Posted January 19, 2009 Author Share Posted January 19, 2009 whats involved in cahnging this gasket as it looks like its timing belt, sprockets, and according to the manual injection pump, sounds like a lot of work to me. Quote Link to comment Share on other sites More sharing options...
western Posted January 19, 2009 Share Posted January 19, 2009 complete front stripdown to change that gasket. Quote Link to comment Share on other sites More sharing options...
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