water oil pump separation
Discussion
got the unit out on the bench and removed the front and rear circlip, front bearing looks bad:
2 questions:
How do you separate the oil and water units
The shaft that comes through the timing cover has a square copper-ish seal, folded over the bolts. Re-use or find another, and where the heck from?
I did ring around and was quoted £800 for refurbing the unit.
2 questions:
How do you separate the oil and water units
The shaft that comes through the timing cover has a square copper-ish seal, folded over the bolts. Re-use or find another, and where the heck from?
I did ring around and was quoted £800 for refurbing the unit.
Yep it all pulls apart, but with extreme caution to support and load only in appropriate places, especially where the water impellers are concerned.
And then it all has to be pressed back together again.
I did mine myself, and despite having all the required tools/expertise, still had my heart in my mouth!
And yes, tab washer is easy enough to make if yours is beyond it, but try annealing it.
And then it all has to be pressed back together again.
I did mine myself, and despite having all the required tools/expertise, still had my heart in my mouth!
And yes, tab washer is easy enough to make if yours is beyond it, but try annealing it.
Mine's an August 98 car, the shaft I took out was exactly the same dimensions as the new one.
I'd be surprised if they were still making the early type shaft, so one would assume it is the later type?
One thing I did notice and I don't think it was designed this way? the nose of the shaft where the gear fits had a very slight taper!
It wasn't due to wear as there wasn't a step.
The new one as expected was parallel, machining tolerances I'm guessing..lol.
I'd be surprised if they were still making the early type shaft, so one would assume it is the later type?
One thing I did notice and I don't think it was designed this way? the nose of the shaft where the gear fits had a very slight taper!
It wasn't due to wear as there wasn't a step.
The new one as expected was parallel, machining tolerances I'm guessing..lol.
TwinKam said:
Yep it all pulls apart, but with extreme caution to support and load only in appropriate places, especially where the water impellers are concerned.
And then it all has to be pressed back together again.
I did mine myself, and despite having all the required tools/expertise, still had my heart in my mouth!
And yes, tab washer is easy enough to make if yours is beyond it, but try annealing it.
PAS is off..... the woodruff key although under 2 yrs old, was cut into. Easy fix.And then it all has to be pressed back together again.
I did mine myself, and despite having all the required tools/expertise, still had my heart in my mouth!
And yes, tab washer is easy enough to make if yours is beyond it, but try annealing it.
Back to oil/water pump. How does it separate though? Do you press out the shaft....
I've got all the nuts and cap heads out and it's the units are loos but very aware of that water impeller. If you push the shaft you'll move the water impeller into the housing.
I imagine you separate the oil pump first?
notaping said:
There's build manual for the entire pump train kicking around. Can't remember where I got it online, but I still have a local pdf - if it will help.
I bought the engine manual years ago. Does this help?http://www.nineelmsphotography.com/images/1%20-%20...
http://www.nineelmsphotography.com/images/2%20-%20...
http://www.nineelmsphotography.com/images/3%20-%20...
http://www.nineelmsphotography.com/images/4%20-%20...
http://www.nineelmsphotography.com/images/5%20-%20...
http://www.nineelmsphotography.com/images/6%20-%20...
http://www.nineelmsphotography.com/images/7%20-%20...
http://www.nineelmsphotography.com/images/8%20-%20...
Thanks Byker. I thought I'd downloaded all the known cerbera files but this is a new one. Greatly appreciated
I'll have a go over the weekend.
I've found most of the parts, especially the ceramic seal/bearing, from previous posters. Seems like heat is your friend on removing the impellers.
I'll have a go over the weekend.
I've found most of the parts, especially the ceramic seal/bearing, from previous posters. Seems like heat is your friend on removing the impellers.
Rang Readman racing today, 400 for oil+pump refurbished. John's a decent guy.
Had another go tonight at separating the parts, because I like to know how things work/built. The rear shaft passing through the oil seal to pas pump needed to be pressed out using a decent bearing puller. Once that came out, so did the oil rotors, remove the oil pump woodruff key and then oil housing comes off.
The ceramic seal in the water housing was truly seated, but finally budged using a pilot bearing puller.
Before I can remove the impeller I've got to press out the shaft from the engine side. That should free the shaft.
I get why people pass on DIY repairs, but decent pullers and it's quite straightforward, but you do need decent bearing pullers. I was also making sure all the time that the water impeller was turning freely and not hitting the housing.
Had another go tonight at separating the parts, because I like to know how things work/built. The rear shaft passing through the oil seal to pas pump needed to be pressed out using a decent bearing puller. Once that came out, so did the oil rotors, remove the oil pump woodruff key and then oil housing comes off.
The ceramic seal in the water housing was truly seated, but finally budged using a pilot bearing puller.
Before I can remove the impeller I've got to press out the shaft from the engine side. That should free the shaft.
I get why people pass on DIY repairs, but decent pullers and it's quite straightforward, but you do need decent bearing pullers. I was also making sure all the time that the water impeller was turning freely and not hitting the housing.
Chimp871 said:
Rang Readman racing today, 400 for oil+pump refurbished. John's a decent guy.
Had another go tonight at separating the parts, because I like to know how things work/built. The rear shaft passing through the oil seal to pas pump needed to be pressed out using a decent bearing puller. Once that came out, so did the oil rotors, remove the oil pump woodruff key and then oil housing comes off.
The ceramic seal in the water housing was truly seated, but finally budged using a pilot bearing puller.
Before I can remove the impeller I've got to press out the shaft from the engine side. That should free the shaft.
I get why people pass on DIY repairs, but decent pullers and it's quite straightforward, but you do need decent bearing pullers. I was also making sure all the time that the water impeller was turning freely and not hitting the housing.
Had another go tonight at separating the parts, because I like to know how things work/built. The rear shaft passing through the oil seal to pas pump needed to be pressed out using a decent bearing puller. Once that came out, so did the oil rotors, remove the oil pump woodruff key and then oil housing comes off.
The ceramic seal in the water housing was truly seated, but finally budged using a pilot bearing puller.
Before I can remove the impeller I've got to press out the shaft from the engine side. That should free the shaft.
I get why people pass on DIY repairs, but decent pullers and it's quite straightforward, but you do need decent bearing pullers. I was also making sure all the time that the water impeller was turning freely and not hitting the housing.
It does all make sense when you see it apart rather than just pictures of someone else doing it.PS I Have PM'd you twice now, Matt, is your PH email address correct? ...perhaps try PM'ing me as I know that works!
One of the reasons why I didn't tell you how I took mine apart is because there are 'many ways to Rome', I used a press and various sockets mixed with a few odds and sods.
I'm hoping the pics I posted gave you some idea of what to expect, I couldn't find any pics of the impellers when stripping mine, I really didn't know what to expect.
Just out of interest was the shaft corroded in the same place as mine?
I'm hoping the pics I posted gave you some idea of what to expect, I couldn't find any pics of the impellers when stripping mine, I really didn't know what to expect.
Just out of interest was the shaft corroded in the same place as mine?
Rufus. It's is corroding in the same place ie where the impellers meet up.
I've not got the impellers off the shaft, I'm down to just the shaft and impellers and the housing in-between.
Heat and plus gas, soaking overnight. Then try pressing off tomorrow.
I suppose there's no other way then pressing on the shaft which means the impellers push against the housing? Can't see any other way.... But I get why you used a selection of tools.
I've not got the impellers off the shaft, I'm down to just the shaft and impellers and the housing in-between.
Heat and plus gas, soaking overnight. Then try pressing off tomorrow.
I suppose there's no other way then pressing on the shaft which means the impellers push against the housing? Can't see any other way.... But I get why you used a selection of tools.
Edited by Chimp871 on Tuesday 9th July 20:51
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