TomB Posted November 16, 2018 Share Posted November 16, 2018 Evening all, Im doing a Cam Belt, alternator and dry sump belt change. My purple dry sump scavenge pump is till on it’s original tensioner, so it should be replaced ideally. I’ve seen a few threads about the replacing the gold pump tensioner bearing, but can’t find anything on the purple pump.I had the pump rebuilt a few years ago, but this didn’t include the belt tensioner. Is this item serviceable, or a standard part like a power steering belt tensioner I can get off eBay? I can’t see anything on Caterham parts website. Link to comment Share on other sites More sharing options...
rj Posted November 16, 2018 Share Posted November 16, 2018 it's the same tensioner Link to comment Share on other sites More sharing options...
TomB Posted November 16, 2018 Author Share Posted November 16, 2018 Hi RJ, I’m pretty sure it isn’t the same. The picture below is what CC have on their online store, but isn’t what I have on my engine. The one I’ve got has a bolt inn the centre of the wheel is I still manual adjusted with a threaded adjuster bolt. I’ll try and remove it and upload a pic of what I have.What I haven’t got: Link to comment Share on other sites More sharing options...
rj Posted November 16, 2018 Share Posted November 16, 2018 No picture.I happen to have an almost complete dry sump kit just outside my front door. Will go and take a picture. Link to comment Share on other sites More sharing options...
rj Posted November 16, 2018 Share Posted November 16, 2018 This system originally came with a purple pump; I have another system in the garage that came with the gold pump, which has never been fitted. ISTR that it came with an alloy pulley that was supposed to replace the plastic one shown in the picture. The tensioner itself is the same. There is difference in the diameter of the pump pulley for gold and purple pump.The tensioner is an ordinary Rover item. Link to comment Share on other sites More sharing options...
rj Posted November 16, 2018 Share Posted November 16, 2018 This one is meant to replace the plastic pulley: Link to comment Share on other sites More sharing options...
Leadership Team SLR No.77 Posted November 16, 2018 Leadership Team Share Posted November 16, 2018 Tom, as RJ has said, same tensioner & pulley. The tensioner component though is the original Rover part for the power steering pump drive, it could be that yours is an earlier version?Stu. Link to comment Share on other sites More sharing options...
TomB Posted November 16, 2018 Author Share Posted November 16, 2018 This is mine. Doesn’t look the same to me. Maybe the pulley fits, but the central bearing and attachment..? Where is that on the newer pulley? Link to comment Share on other sites More sharing options...
TomB Posted November 16, 2018 Author Share Posted November 16, 2018 This the one on CC web store. Clearly not what I’ve got. Link to comment Share on other sites More sharing options...
rj Posted November 16, 2018 Share Posted November 16, 2018 That's a very different one. Never seen that before, but couldn't you just replace the bearings? Somewhere I've read about replacing the bearings for the tensioner, not until now has it made sense.Here, but the links are broken (Found with google)https://www.lotus7.club/forum/techtalk/dry-sump-pulley-tensioner-0 Link to comment Share on other sites More sharing options...
TomB Posted November 16, 2018 Author Share Posted November 16, 2018 Thanks, I saw that link but it’s tricky to work out what pulley/ tensioner they are referring to with the broken embedded links! Grrr. Could it off a mid1990s Rover power steering system? Link to comment Share on other sites More sharing options...
TomB Posted November 16, 2018 Author Share Posted November 16, 2018 Bingo! Rover 400 power steering pump system! Therefore, my tensioner is the original one supplied when my engine was originally built as a 1.4 in the mid 90s. I retained it when I did the 1.8 conversion, so it’s 57000miles/ 22 years old. It’s silent when it spins, turns smoothly and is probably the OEM bearing. Should I replace it? Link to comment Share on other sites More sharing options...
simon_h Posted November 16, 2018 Share Posted November 16, 2018 Mine is the same with purple pump, a manual tensioner rather than the automatic one for the gold type. Perhaps the later purple were supplied with the auto type? The belt is shorter as well, I discovered. Link to comment Share on other sites More sharing options...
TomB Posted November 19, 2018 Author Share Posted November 19, 2018 What do you think? Should I replace the tensioner? Link to comment Share on other sites More sharing options...
Wrightpayne Posted November 19, 2018 Share Posted November 19, 2018 can you identify the bearing?Ian Link to comment Share on other sites More sharing options...
rj Posted November 19, 2018 Share Posted November 19, 2018 If it has worked until now, then just replace the bearing. Link to comment Share on other sites More sharing options...
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