rogerch 63 Posted March 21, 2011 Report Share Posted March 21, 2011 Got my bits today, including a re-con kit for the water pump. There are instructions, but is there a how to anywhere ? Not clear on what I need to measure before dismantling. Quote Life is like a sewer, what you get out of it, depends on what you put into it. (Tom Leahrer) Link to post Share on other sites
Vulcan Grey 251 Posted March 21, 2011 Report Share Posted March 21, 2011 You must heat the pump in an oven before trying to press out the bearing and seal assembly. If you don't, you risk cracking the pump housing. Also remember to heat the housing before pressing the new bearing in. I do have some photos here https://picasaweb.google.com/lotusse/LotusWaterPump# Quote Travis Vulcan Grey 89SE My Lotus Photo and Projects Album Link to post Share on other sites
rogerch 63 Posted March 22, 2011 Author Report Share Posted March 22, 2011 First question, probably one of many. How do I stop the crank turning to undo the bottom pulley ? It's in the air, in 5th, handbrake on, everything is still turning (never did think much of the handbrake) I could jam a screw driver down a plug hole but that seems a bit extreme. Maybe a screw driver jammed between the belt and the pulley, I'm talking maybe alternator belt. Any other suggestions ? Quote Life is like a sewer, what you get out of it, depends on what you put into it. (Tom Leahrer) Link to post Share on other sites
Gold FFM Quicker 2 Posted March 22, 2011 Gold FFM Report Share Posted March 22, 2011 I used a rubber belt wrech around the crank pulley Quote Lou Senko Austin, TX more, more, more.... Link to post Share on other sites
Vulcan Grey 251 Posted March 22, 2011 Report Share Posted March 22, 2011 (edited) Place car in 5th gear, have assistant push brake pedal hard while you undo the crank pulley. DO NOT loosen the tensioner before doing this!!!!! Some people use the starter to bump the crank while a wrench is on the pulley bolt and leveraged against the ground... I don't! Edited March 22, 2011 by Vulcan Grey Quote Travis Vulcan Grey 89SE My Lotus Photo and Projects Album Link to post Share on other sites
Rich H 4 Posted March 22, 2011 Report Share Posted March 22, 2011 I got an assistant to jam a screwdriver in the starter ring gear... Quote Lotus Esprit S4 - Work in progress Porsche 924 Turbo - Parts chaser Smart Roadster Coupe - Hers Link to post Share on other sites
rogerch 63 Posted March 23, 2011 Author Report Share Posted March 23, 2011 There's another one ! that one wheel that keeps turning even with the handbrake on,,,,,,,, jam a jack handle through the mag against the trailing arm, locking the wheel, then with a breaker bar and another jack handle as leverage, using my mighty 68 kilo frame, I just managed it. Quote Life is like a sewer, what you get out of it, depends on what you put into it. (Tom Leahrer) Link to post Share on other sites
Rich H 4 Posted March 23, 2011 Report Share Posted March 23, 2011 More pies and beer required for you. Quote Lotus Esprit S4 - Work in progress Porsche 924 Turbo - Parts chaser Smart Roadster Coupe - Hers Link to post Share on other sites
rogerch 63 Posted March 23, 2011 Author Report Share Posted March 23, 2011 Question Number 2 The vacuum pump seems to be also the tensioner for the all important belt driving the water pump. There's an allen bolt in a slotted hole (which I've undone) and another one I've loosened, but cannot budge the pump to slacken the belt. Just wondered if there is a worm drive there somewhere I'm missing, it would seem logical as setting the tension down there doesn't look easy. I'm so much enjoying myself grovelling around under a car, with limited space, light, etc. Quote Life is like a sewer, what you get out of it, depends on what you put into it. (Tom Leahrer) Link to post Share on other sites
Vulcan Grey 251 Posted March 23, 2011 Report Share Posted March 23, 2011 There is only the the top pivot (hex socket for an Allen key) We usually grind down an Allen wrench to reach that. Then there is the lower adjuster bolt. Remove both. I often find it easier to remove the 4 bolts of the vacuum pulley and get that pulley out of the way in order to remove the pump (especially the first time). Quote Travis Vulcan Grey 89SE My Lotus Photo and Projects Album Link to post Share on other sites
stevem 2 Posted March 23, 2011 Report Share Posted March 23, 2011 Hi Roger When I did mine I just slackened the top and bottom bolts off and the pump just swung enough to adjust it with the lower allen head bolt used to lock it in place afterwards. Maybe it's just stuck and needs a little persuasion. Quote Too many Toys are never enough ! Link to post Share on other sites
rogerch 63 Posted March 23, 2011 Author Report Share Posted March 23, 2011 Yeah, I'm re-thinking this after a spate of chest pains, I'm taking the plenum off this morning, followed by the alternator, I know strictly they don't have to come off but I'm just going to take my time and make it as easy for myself as possible. Not sure about this vacuum pump, I don't want to be levering off the chassis. can't see where I might clobber it with a nylon hammer ? Quote Life is like a sewer, what you get out of it, depends on what you put into it. (Tom Leahrer) Link to post Share on other sites
lotus4s 24 Posted March 24, 2011 Report Share Posted March 24, 2011 Removing the alternator will make the job much easier along with making it easier to tension the belt too. Don't get discouraged, it's a bitch of a job but take your time and be patient. Quote 1995 S4s Link to post Share on other sites
Rich H 4 Posted March 24, 2011 Report Share Posted March 24, 2011 Just check adn double check all the damn pipe clips when it goes back together! Chasing water leaks after it's been put together is a nightmare! Quote Lotus Esprit S4 - Work in progress Porsche 924 Turbo - Parts chaser Smart Roadster Coupe - Hers Link to post Share on other sites
rogerch 63 Posted March 24, 2011 Author Report Share Posted March 24, 2011 Had a good day, all the belts are off, the alternator is off the plenum is off, I have set to TDC ready to go tomorrow, and no chest pains. The tomorrow mission is to remove the timing belt and the water pump, weekend off to watch the Melbourne GP then go see best buddy with the press to dismantle the water pump. Quote Life is like a sewer, what you get out of it, depends on what you put into it. (Tom Leahrer) Link to post Share on other sites
Vulcan Grey 251 Posted March 24, 2011 Report Share Posted March 24, 2011 Don't forget the oven! Quote Travis Vulcan Grey 89SE My Lotus Photo and Projects Album Link to post Share on other sites
rogerch 63 Posted March 24, 2011 Author Report Share Posted March 24, 2011 I won't forget, but do I need a press ? to either get it out or put the new one in, because a press is over to my local friendly workshop. Quote Life is like a sewer, what you get out of it, depends on what you put into it. (Tom Leahrer) Link to post Share on other sites
lotus4s 24 Posted March 25, 2011 Report Share Posted March 25, 2011 (edited) You'll definitely need a press to remove the pulley hub, impeller and bearing and installing the new one. Edited March 25, 2011 by lotus4s Quote 1995 S4s Link to post Share on other sites
Vulcan Grey 251 Posted March 25, 2011 Report Share Posted March 25, 2011 (edited) yes you do need a press. I haven't done it for a while but I recall these steps: (I may be backwards...) you need to heat the pump housing in the oven. THen you press the shaft through the pulley mount using a small socket or something. As you do this, the bearing and impeller will fall out the other end. Then you flip the press plates around for the smaller hole and press the bearing out of the impeller. To reinstall (IIRC) you heat the housing. I usually coat the outside of the bearing with sealant like hylomar as a lube and gap filler. place the seal on the bearing shaft, coat the outer lip with sealant. press the bearing and seal into the housing while also pressing the shaft into the impeller. Stop before the impeller hits the housing. maybe place a plastic shim to maintain the gap. then press the pulley plate onto the shaft while using a socket to only press on the other side of the shaft (not on the housing or the impeller). Edited March 25, 2011 by Vulcan Grey Quote Travis Vulcan Grey 89SE My Lotus Photo and Projects Album Link to post Share on other sites
lotus4s 24 Posted March 25, 2011 Report Share Posted March 25, 2011 I don't think you want to install the seal until the bearing has been pressed into place. Quote 1995 S4s Link to post Share on other sites
rogerch 63 Posted March 25, 2011 Author Report Share Posted March 25, 2011 Question Number 3 The bolt holding the bottom pulley was a problem to loosen, looking closely at the thread it has been loctited, should have been ? in other words should loctite it back in ? Quote Life is like a sewer, what you get out of it, depends on what you put into it. (Tom Leahrer) Link to post Share on other sites
lotus4s 24 Posted March 25, 2011 Report Share Posted March 25, 2011 Yes Quote 1995 S4s Link to post Share on other sites
ramjet 1,085 Posted March 25, 2011 Report Share Posted March 25, 2011 I have a 'how to' for this Roger. Please see below. Glad to help. Empty coolant. Take pump off. Pull pump apart. Remove old buggered bits. Clean left over bits. Install new bits. Put back together. Put back on engine. Put coolant back in. Job's right. Quote All we know is that when they stop making this, we will be properly, properly sad.Jeremy Clarkson on the Esprit. Opinions are like armpits. Everyone has them, some just stink more than others. Link to post Share on other sites
rogerch 63 Posted March 25, 2011 Author Report Share Posted March 25, 2011 Question number 4 Is there a direction of rotation for this belt ? Quote Life is like a sewer, what you get out of it, depends on what you put into it. (Tom Leahrer) Link to post Share on other sites
lotus4s 24 Posted March 25, 2011 Report Share Posted March 25, 2011 (edited) If it's not marked it shouldn't matter. I usually put mine with the letterting towards the front... Edited March 25, 2011 by lotus4s Quote 1995 S4s Link to post Share on other sites
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