Vehicle & Technical > Discovery
water pump nightmare *UPDATE*
cardiff_gareth:
--- Quote from: "Range Rover Blues" ---Lots of WD40 and some heat might help loosen it when the time comes. If it's going into Ali then you have the obvious bimetallic corrosion rpoblem but fortunately Ali expnds almost twice as much as iron/steel, so take the bolts out of a hot engine :wink:
--- End quote ---
To get to the bolt I'd have to take the timing cover off the engine so it would need to be cold, is there anyway I could heat up the area in question to help try and remove it when the engine is cold :?:
I'm just worried abour warping something expensive
Range Rover Blues:
Presumably the coolant is gone as you have the pump off, otherwise I'd say hot water. You might be able to pour a couple of kettles ful over the engine but it will take a bit of warming up. Avoid naked flames on castings, especially ali.
If the engine will start then run it for a couple of minutes, perhaps with a hose running into the block to prevent over heating.
hobbit:
Heat it up any way you can, if you have anough to grab the broken stud/bolt apply some twist with mole grips or something similar and give the end of the bolt a tap with a hammer to help shock it free
A little heat on the bolt will transmit down into the casting, but be very careful, dont go turning the stud cherry red
Another option would be to mig a nut onto the bolt/stud the heat from the mig will help as long as you dont try to put half a roll of mig wire onto it
Range Rover Blues:
Actually that's a good point, if you go to the trouble of welding a nut onto thte stud then the heat of welding will so a long way to losening the thread too. Once it's hot spray loads of penetrating oil onto the bolt to cool it again then give it a couple of sharp taps and try gently to turn it.
Of course there is that issue that once you start welding stuff to the snapped stud it HAS to come out before you give up and put it back together.
If all else fails you can also drillout the stud and helicoil the hole, some companies will come out and do it for you and if you get SNAP on stud extractors they have a drilling guide to get the pilot hole dead central on the stud.
cardiff_gareth:
Well, she's off to vale 4x4 tomorrow to get made better again, rather than try and drive it down i'm having it recovered from the house in case I make it worse or something.
I'll give you the cost tomorrow when I know.
They're doing the P gasket at the same time
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