Help: Water Pump Bolt Size
02-26-2015, 11:53 PM
#1
Registered User
Thread Starter
Help: Water Pump Bolt Size
Short version: Anybody know the diameter and thread pitch of the water pump bolts for a 2004.5?
Long version: While driving down the highway today, my water pump, in a fit of petulance, decided to liberate itself from the engine, freeing the serpentine belt at the same time. I was driving over a bridge at the time. A bridge with a corner on it. While traveling 72mph. As you might imagine, the excitement factor was rather high when the truck appeared to achieve sentience and it's first reasoned decision was to kill me by trying to steer straight into (and through) the guardrail instead of in my intended (and required) course of direction. I managed to muscle it up an off-ramp, through a round about and roll into a parking lot before the brakes completely failed to work, so that worked out in my favor I guess. Anyway...don't know how it happened, but the water pump bolts loosened and the bottom one is gone. The pump spins just fine, so I think I got lucky there (replaced it in December/don't want to buy another), but I need to know what diameter/thread pitch the bolt is so I can replace it. Anyone?
Long version: While driving down the highway today, my water pump, in a fit of petulance, decided to liberate itself from the engine, freeing the serpentine belt at the same time. I was driving over a bridge at the time. A bridge with a corner on it. While traveling 72mph. As you might imagine, the excitement factor was rather high when the truck appeared to achieve sentience and it's first reasoned decision was to kill me by trying to steer straight into (and through) the guardrail instead of in my intended (and required) course of direction. I managed to muscle it up an off-ramp, through a round about and roll into a parking lot before the brakes completely failed to work, so that worked out in my favor I guess. Anyway...don't know how it happened, but the water pump bolts loosened and the bottom one is gone. The pump spins just fine, so I think I got lucky there (replaced it in December/don't want to buy another), but I need to know what diameter/thread pitch the bolt is so I can replace it. Anyone?
02-27-2015, 03:40 PM
#2
Registered User
Thread Starter
UPDATE: In a shocking (and completely foreseen) turn of events, none of the Dodge/Ram dealers have a part number for the bolts. A quick call to Cummins NW and they had the part number, but none in stock. A little digging through manuals by the parts tech finally found the answer: M8x1.25x22.
Thanks Cummins NW for taking the time to help.
Thanks Cummins NW for taking the time to help.
02-28-2015, 03:11 PM
#4
Registered User
Thread Starter
Now that I've had a chance to dig around, I found the lower bolt sheared about 3 threads in. Now I get to remove stuff so I can pull the remnants. I would guess I overtorqued it when I changed pumps in December, but who knows?
03-01-2015, 12:37 AM
#6
Registered User
Dig at it with an o ring pick. If it turns at all, just work it out, if not, get an angle drill aand a left hand drill bit.
Anothher tactic is to use a rag and a standard screwdriver. Bunch the rag into the hole, and twist it with the driver, it might grab a sharp part of the bolt, and spin it out.
I usually weld them out, but i am a bit lazy that way. Good luck
Anothher tactic is to use a rag and a standard screwdriver. Bunch the rag into the hole, and twist it with the driver, it might grab a sharp part of the bolt, and spin it out.
I usually weld them out, but i am a bit lazy that way. Good luck
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