After doing the water pump once. It was all together and I found the water pump to be leaking. Pulled it back apart and the o ring had gotten pinched. I just bought a new one from the stealership for $17. I put it on the front half with grease but it seems too big. I feel like I could lose approx. a Cm of the o ring and it would fit. The water pump is not Mopar the o ring is. Could that be an issue?

Which one? Between the two parts of the pump, or going to the block?

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05 CRD Sport Dark Kahki

RRO: Adventure Rack/Rails ** MOPAR: Skids/Renny Flares & 255/75r17 (32.1) BFG M/T on JK wheels ** ARB: Bumper/IPF lights/790/948/shocks ** GDE: TCM/Hot Tune ** ROCKLIZARD: Super Sliders/Komodo Bumper

My Build Thread
US Army Infantry

The one between the two halves of the water pump. I went through my receipts and it turns out I did buy the mopar pump.

I found the same thing. The o-ring is a little bigger in diameter than it should be. I used Hylomar sealant and a lot of care to make sure it seated properly and did not get caught between the halves. So sorry you had to do the whole job twice. Yukk!

DOC

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2005 KJ CRD Ltd Detroit TrueTrac Bilsteins G2 GDE "HOT" ECU GDE TCM "Tow Tune" "euro" TC SEGR Weeks Elbow New HG at 130K ARPs Clean CAT aFe Filter Magnaflow Exhaust EHM Cumminos In-Tank Lift Pump Hayden Fan Clutch Nylon Fan VH Enabled with GDE lower shutoff point Recalibrated Temp Gauge Tekonsha Prodigy Sears P-1 ZDDP

When I did my TB and water pump, I was concerned about the same o-ring. So I let it run and get hot before putting the whole thing back together and before I put the expensive coolant back in. The truck can be ran without the serpentine belt stuff being put back on.

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2005 CRD Green orm,ehm,oem skids, painted wheels
2005 CRD Blue orm,ehm
F250 SD forsale (SOLD)

I took the front half of the water pump and the o ring back to the dealer. The parts guy thought that it was way too big. He ordered another one but it won't be in till next week. Hope it's right this time.

If you buy a new VM/Mopar pump where you can disassemble the front half, why not just re-use the "new" o-ring from the new pump? I'd just put some petroleum jelly on the o-ring and assemble it onto the old half still on the engine. Maybe I am wrong here?

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Mike Rausch
Bear, Delaware
2006 Liberty Sport CRD 253K

Yeah I think the recommendation is to use something to hold it in place, SirSam mentions it I believe. Mine fit fine though

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05 CRD Sport Dark Kahki

RRO: Adventure Rack/Rails ** MOPAR: Skids/Renny Flares & 255/75r17 (32.1) BFG M/T on JK wheels ** ARB: Bumper/IPF lights/790/948/shocks ** GDE: TCM/Hot Tune ** ROCKLIZARD: Super Sliders/Komodo Bumper

My Build Thread
US Army Infantry

I just used a little assembly lube to hold mine into place, it was just a hair too big and I didn't want to pinch or roll it.

I then filled the pump with coolant and checked for leaks/seapage.

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Silver 2006 KJ 2.8L CRD Limited:
GDE ECO Tune / Fumoto Valve / E-Tecno GX3123 7v Glow Plugs / 2nd Gen Fuel Head / Mishimoto RED Hoses / Rockers/Lifters @ 114k / Hayden FC + 11 Blade Nylon / Sears P1 Battery / Transgo 45RFE-HD2 Reprogramming Kit / Timken Front Bearings