Totallyrad

Glad to hear it Bark! Any problems refilling it or air pockets?

Bark

Not at all although in addition to taking the heater hose off I also left the thermostat housing off and didn't put the new thermostat in until it was almost full.

The worst part for me was worrying (unnecessarily) about the drain plug because I had read a few threads about people having major problems with it.
Thanks again!

Chrisreyn

Gonna try this tonight, I discovered my WP dead when I went out this morning .
Just FWITW, local dealer quoted 2 hrs labor=$144.50,
$249.50 for the pump, $25 for the seal and $80 for coolant.
Replacing the belt would be an additional $78
Local Cummins dealer wAnts $160 for the pump
Getting it at NAPA for $49.99
I was scared to try this, but after reading this thread I'm gonna give it a shot
I'll let ya know how it goes

Bark

I got reman pump at Napa. Same casting as the original but the impeller shaft was just a little longer so it would not fit.
Decided to buy a new pump but they didn't have any in stock. O'reilly's had a new one for cheaper than the reman from NAPA.

Have fun! (really).

Chrisreyn

Clerk said its a new pump , but I'm haven't gotten there to pick it up yet

Chrisreyn

Fun?
I was 20 miles into my 35 mile commute this morning before I reized why I had no heat, temp was 11 per the overhead
I'm stuck on OT at work, truck is Putin thepatki g lot. Gonna put some coolant in it, go get the pump, nurse it back to the house and try todo this in the frigid cold and dark, praying I haven't blown the head gasket ( it never showed running over 200 on the dash gauge)

Gonna be a great time !!!

Bark

Ooops. I forgot its winter. I gotta change mine in 70° weather and was in no hurry.

Instead of "Have Fun" I will say "Keep all your fingers".

commtrd

I just installed the third water pump in two months. First one was a Gates from Geno's which was made in China. Second pump was from NAPA and was made in Mexico. The last pump was purchased from O'Reilly Auto Parts and was made in China. The last pump was the only one that had the ring on the impeller. So far it is still holding but it has only been on two weeks. Three water pumps in two months and I am getting pretty good at changing water pumps! Using Zerex HOAT G5 antifreeze.

I think it is safe to say that I will only be using genuine Cummins parts from now on. Does anyone have a favorite supplier of genuine Cummins parts online?

Chrisreyn

Ok, got her done ! Took me about 2 hours total from opening the tool box to cleaned up and back in the house ,but there were frequent " warm my fingers " breaks!
Followed the write-up to the letter but also removed the airbox, was plenty of room to do it easily.
Was a little concerned when I got finished, the engine temp was hitting over 200, which it's never done, and I was still getting no heat in the cab, cold air only. But after letting it run for about 20 minutes it started blowing warm and engine temps settled at 190'sh. Think the t-stat may have been stuck.
Freezing drizzle on the way in this morning and it was nice having a warm truck !!!
Thanks for a great write up !!!

Bark

Wonder if maybe you had an air pocket for awhile. Glad you are back on the road with all of your fingers.

Surprised to know the Gates one failed since Gates is what Geno's sells.

Totallyrad

Chris, sorry I'm late getting here. If you get really low on antifreeze and get an air pocket at the water temperature sensor the truck will read normal even when it's 808 outside although you're boiling fluid out the overflow. I mentioned mine running hot in the write up and that's why I needed the second pump so soon.

If you got there in 2 hours you did fine, especially in the weather conditions where you're located. I am surprised it took 20 minutes to get heat but maybe that's partially due to your location. Glad it worked out!

Chrisreyn

When I went to add coolant, I found it was pretty much full. I drained just over 5 gallons when I opened the petcock. No white out the exhaust, so I think I'm ok.
She seems to be running fine now, except for a loud clatter from the lower left area at the front of the engine near the ac compressor. Think it might be the idler has gone as well....(sigh) if I remember to grab the camera, I'll post some pics of that install.

I'm still not getting " hot" air, but warm ... After 80 miles non-stop yesterday, it was still comfortable with my heavy Carhart on, but it is melting ice off the windows. Dash gauge is steady at about 185-190.
I just installed my "winter front" , a used pizza box that covers about 2/3of the rad so maybe that will help!
Great write-up Rick, very useful and informative

Dr.Dizzle

Once it cools down, be sure to open the radiator cap and top it off as well as the overflow bottle. After a few heating and cooling cycles, the radiator may be a little low on coolant as trapped air makes it's way out of the system.

Totallyrad

Chris, do you usually have to run a winter front or is it just since the pump change. Thank you, and you're welcome as well.

Chrisreyn

I have most years past with my first gen's, but
Our temps jump around so much, last Sundays high was 26, today it's 63, forecast for tomorrow is 33 and freezing drizzle
I use a piece of cardboard I can take in/out easily.