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It looks like I will need to replace the water pump on my AE82 4age.
My question is, do I need to remove the crank pulley to replace the pump or not.
The guide that has been posted on the rollamods site says to remove the pulley, but my Haynes manual does not mention it.
Also, going by anyone else's experience is it that much harder to replace the whole pump or should I do as the rollamods how to suggests and just replace the front of the pump.
Once the pumps start leaking, how long will they last? Is it a slow death with diminishing water pump output, or is it a sudden catastrophic failure any time from now.
Thanks .
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replacing water pump on 4age
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#2
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Posted 06 April 2008 - 09:14 PM
You have to remove the pulley to get the bottom cover off to get to the lower water pump bolts.
Replace the whole pump and the o'ring behind it. You'd hate to just do the pump and have the o'ring leak.
Good idea to change the timing belt, tensioner bearing, and crank shaft seal whilst its apart.
Replace the whole pump and the o'ring behind it. You'd hate to just do the pump and have the o'ring leak.
Good idea to change the timing belt, tensioner bearing, and crank shaft seal whilst its apart.
This post has been edited by stock93: 06 April 2008 - 09:15 PM
#3
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Posted 17 October 2011 - 12:38 AM
I found this post useful when i was searching so i thought it add some info.
My experiences - bought a cheap Protex water pump for my GTi $70 - part number PWP1063. It came with pump and the gasket. No o-rings, shame because thats where my leak was from. if anyone does this make sure you get o rings. Perhaps the genuine toyota part has this included.
I did mine without changing the timing belt or removing it because the timing belt was only changed 20 thousand k's ago. I emptied the coolant, took the crankshaft pulley bolt off with rattle gun and then the bottom and middle timing belt covers. The alternator had to be loosened and belt removed, the other belt tensioner at the very bottom of the engine had to be released and belt removed. Once belts off the crankshaft pulley will come off with some jiggling. I undid the two bolts connecting a pipe to the back of the water pump and removed all the bolts for the pump and the pump came out. I did not had to touch the timing belt or the tensioner. Its fiddly but can be done.
Pretty much all of the work was done from under the car so get comfy there. might be helpful to remove driver tyre.
Once the pump was out, i had to split the two halves open. Clean up the surfaces and put the new pump on. installation in reverse.
hope it helps someone someday
My experiences - bought a cheap Protex water pump for my GTi $70 - part number PWP1063. It came with pump and the gasket. No o-rings, shame because thats where my leak was from. if anyone does this make sure you get o rings. Perhaps the genuine toyota part has this included.
I did mine without changing the timing belt or removing it because the timing belt was only changed 20 thousand k's ago. I emptied the coolant, took the crankshaft pulley bolt off with rattle gun and then the bottom and middle timing belt covers. The alternator had to be loosened and belt removed, the other belt tensioner at the very bottom of the engine had to be released and belt removed. Once belts off the crankshaft pulley will come off with some jiggling. I undid the two bolts connecting a pipe to the back of the water pump and removed all the bolts for the pump and the pump came out. I did not had to touch the timing belt or the tensioner. Its fiddly but can be done.
Pretty much all of the work was done from under the car so get comfy there. might be helpful to remove driver tyre.
Once the pump was out, i had to split the two halves open. Clean up the surfaces and put the new pump on. installation in reverse.
hope it helps someone someday
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