water pumps wear

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   I replaced my water pump on the D17D Saturday. Today I drove it a good 30 miles. I noticed the water temp runs a little lower. Before the new pump it was always about half way or slightly more in the green zone. Today was the hottest and longest run and the water temp was definitely in the lower 1/4 of the green. The replacement pump was a completely new and not a reman.

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Brian Jasper co. Ia Members Profile Send Private Message Find Members Posts Add to Buddy List Orange Level Joined: 11 Sep 2009 Location: Prairie City Ia Points: 10508	Post Options Post Reply Quote Brian Jasper co. Ia Report Post Thanks(0) Quote Reply Topic: water pumps wear Posted: 04 Jul 2011 at 6:12pm
	I replaced my water pump on the D17D Saturday. Today I drove it a good 30 miles. I noticed the water temp runs a little lower. Before the new pump it was always about half way or slightly more in the green zone. Today was the hottest and longest run and the water temp was definitely in the lower 1/4 of the green. The replacement pump was a completely new and not a reman.
	"Any man who thinks he can be happy and prosperous by letting the government take care of him better take a closer look at the American Indian." Henry Ford

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CTuckerNWIL Members Profile Send Private Message Find Members Posts Add to Buddy List Orange Level Joined: 11 Sep 2009 Location: NW Illinois Points: 22825	Post Options Post Reply Quote CTuckerNWIL Report Post Thanks(0) Quote Reply Posted: 04 Jul 2011 at 6:24pm
	Yep, I used to have a 66 chevy pickup and the pump wasn't working too well. When I pulled it the impeller had about 3/8 inch more clearance than the new one.
	http://www.ae-ta.com Lena 1935 WC12xxx, Willie 1951 CA6xx Dad bought new, 1954WD45 PS, 1960 D17 NF

Gerald J. Members Profile Send Private Message Find Members Posts Add to Buddy List Orange Level Joined: 12 Sep 2009 Location: Hamilton Co, IA Points: 5636	Post Options Post Reply Quote Gerald J. Report Post Thanks(0) Quote Reply Posted: 04 Jul 2011 at 6:38pm
	Impeller blades sometimes rust. But the thermostat should control temperature unless the flow is way to small then it should be overheating. Often a failed pump contributes to a single overheating event as it loose water past the seal from seal or bearing failure and that damages the thermostat. That happened to the thermostat in my dad's car that I was taking west with Mom and camper in 1970. Half a day out, water pump let go. And I'd been driving it more on the thermometer than the speedometer along I-44 near St. Louis. Changed the pump at lunch at Rolla. Next day on level ground in Oklahoma the thermostat started sticking closed. Bought thermostat and gasket at Tulsa, didn't make OK City before it stuck and stayed closed, so I changed the thermostat on the side of the interstate with traffic roaring by. That over heat episode probably contributed to an overheat ring or valve and by the time that trip was over, the car was running on 5 cylinders with a bit of a whoosh on the 6th one. So I'd be considering at least checking the thermostat if not changing it. Gerald J.