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  #1  
Old 04-27-2005, 05:02 AM
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Short hose between water pump and engine

Can anyone tell me how to change the short hose connects to engine from water pump? One mechanic told me he had to remove the water pump to replace it , $$$. Is it true? Thanks.

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  #2  
Old 04-27-2005, 11:31 AM
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Tis true. You either need to remove the head or the water pump to replace that hose properly.
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  #3  
Old 04-27-2005, 11:34 AM
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I'm afraid that is true. You must remove the water pump. No easy task.
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Old 04-27-2005, 12:28 PM
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Do a search, I think somebody here figured out a way to do it.
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  #5  
Old 04-27-2005, 12:45 PM
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I did it last summer. You need to first cut the old hose off so you have a little more room. Next you need to very carefully cut off about 1/4 inch of the pipe on the waterpump. You have to go slow, there's not much room. Be very careful not to cut into the intake manifold as others have done. With this little section of the waterpump pipe gone you can slip the new hose into place, and there's still enough pipe on the water pump to clamp it in place. I wound up replacing the water pump about 6 months later when it went bad, so I'm back to a factory configuration now.

Pete
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  #6  
Old 04-27-2005, 03:20 PM
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I think that rubber hose tends to outlast your water pump. I'd have one on hand just in case, but would wait until the water pump gets changed to also change that hose.

Len
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  #7  
Old 04-28-2005, 02:50 AM
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The MB hoses tend to last a pretty long time if the coolant changes are kept up with - 10 years is not unrealistic. Unless you have some kind of indication to suggest it is failing, I would wait until the water pump needs to go.
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  #8  
Old 04-28-2005, 05:47 AM
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if you are talking about the bypass hose on the M103, you do not need to remove the water pump. yes, it might take you a while to install a new one, but the water pump stays on.

nenad

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