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Author Topic: 426 Hemi - Changing water pump - procedure?  (Read 228 times)

Offline MopSquad

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426 Hemi - Changing water pump - procedure?
« on: January 09, 2017 - 01:17:43 PM »
Hello all!

Looks like my water pump is weeping and needs replacement.  Compared to my Fords, this looks a lot easier.  Just the front impeller assembly, leaving the housing still attached.

My question is the sequence of events/removal.

Do I need to remove the radiator? (I have a clutch fan and shroud)

What do I need to remove?

Thx!




Offline mopardave

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Re: 426 Hemi - Changing water pump - procedure?
« Reply #1 on: January 09, 2017 - 04:00:37 PM »
shroud , fan, belt, pulley. pump.
Mopar Dave
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Offline moper

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Re: 426 Hemi - Changing water pump - procedure?
« Reply #2 on: January 09, 2017 - 04:33:44 PM »
..and per  Chiltons.... " installation is reverse of removal".... lol


Offline BIGSHCLUNK

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Re: 426 Hemi - Changing water pump - procedure?
« Reply #3 on: January 09, 2017 - 06:59:33 PM »
Really pretty basic...
70 Chally R/T Convertible- Yes she's really got a HEMI, no she's not a Charger!
                                             [o o o o]
                                                  OO
                                                  OO 
                                              [o o o o]
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Offline MopSquad

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Re: 426 Hemi - Changing water pump - procedure?
« Reply #4 on: January 09, 2017 - 07:21:14 PM »
shroud , fan, belt, pulley. pump.

Is there room to actually pull the shroud out?  Just angle it out between fan and rad?

EDIT:  Just looked at the service manual.  It gave me the procedure.
« Last Edit: January 09, 2017 - 09:11:14 PM by MopSquad »

Offline MopSquad

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Re: 426 Hemi - Changing water pump - procedure?
« Reply #5 on: January 10, 2017 - 11:27:40 PM »
Ran into a snag.  Where should I pry to remove this assembly.  Is the fan attached  permanently to the pulley?
How should I proceed.  Nothing wants to dislodge?

EDIT.  was able to pry. Fan assembly was kind of pressed on to the WP hub.
« Last Edit: January 11, 2017 - 12:23:41 AM by MopSquad »

Offline Finoke

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Re: 426 Hemi - Changing water pump - procedure?
« Reply #6 on: January 11, 2017 - 08:35:31 AM »
Ran into a snag.  Where should I pry to remove this assembly.  Is the fan attached  permanently to the pulley?
How should I proceed.  Nothing wants to dislodge?

EDIT.  was able to pry. Fan assembly was kind of pressed on to the WP hub.

It's been awhile since I've done this, but If I can remember correctly, this is what I had to do.

The fan needs to come off to get clearence to pull and replace the pump due to the radiator being in. But the fan itself is held on by 4 long bolts that also hold the fan spacer and pully on the water pump. So you may not have enough clearence to even get the bolts out due to the rad being in. So to eliminate a bunch of headaches....

Drain the rad and take the hoses off. You want to replace the clamps to non OEM clamps anyway because OEM tends to leak. And you need to drain the coolent anyway to get the pump out.

Loosen the alternator and remove the belt.

Unbolt the fan shroud and pull it back over the fan towards the back of the car.

Remove the radiator. Remove the fan shroud. Remove the 4 long bolts that hold the fan and pulley on and remove the fan, spacer  and pulley.

Remove the water pump bolts and pry the pump out.

Seems like a lot of work but it's easier than hitting roadblocks.

Tom



1971 FC7 V6X 'Cuda Convertible 



Offline MopSquad

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Re: 426 Hemi - Changing water pump - procedure?
« Reply #7 on: January 11, 2017 - 11:50:21 AM »
It's been awhile since I've done this, but If I can remember correctly, this is what I had to do.

The fan needs to come off to get clearence to pull and replace the pump due to the radiator being in. But the fan itself is held on by 4 long bolts that also hold the fan spacer and pully on the water pump. So you may not have enough clearence to even get the bolts out due to the rad being in. So to eliminate a bunch of headaches....

Drain the rad and take the hoses off. You want to replace the clamps to non OEM clamps anyway because OEM tends to leak. And you need to drain the coolent anyway to get the pump out.

Loosen the alternator and remove the belt.

Unbolt the fan shroud and pull it back over the fan towards the back of the car.

Remove the radiator. Remove the fan shroud. Remove the 4 long bolts that hold the fan and pulley on and remove the fan, spacer  and pulley.

Remove the water pump bolts and pry the pump out.

Seems like a lot of work but it's easier than hitting roadblocks.

Tom

Thank you for the detailed write up!

I ended up lucky as I did not need to remove the radiator or shroud.  The hardest part was the separating of the fan assembly from the WP pulley.  I guess the PO bonded them together, I assume to facilitate the lining up of the bolt holes with the WP.