Home » Public Forums » GMCnet » [GMCnet] Do our engine water pumps die from age, or miles ?
| Re: [GMCnet] Do our engine water pumps die from age, or miles ? [message #329459 is a reply to message #329454] |
Sat, 24 February 2018 09:37   |
GMC.LES
Messages: 505
Registered: April 2014
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Water pump life span also has a lot to do with vehicle use. A vehicle that sits long periods will often have more leaks and parts longevity issues than one that is run regularly. This is the main reason why people with high mileage vehicles will have a better reliability than those who barely use their vehicles. KenB’s vehicles are a good example.
My own experiences with dormant vehicles has been that most seals will develop a leak shortly after the vehicle has been put to use. My JD tractor sleeps most of the summer, come the fall, It weeps oil from the front axle until I’ve put a few hours of use on it. My 57 Unimog 401 leaks from the water pump each time I run it, which is about once a year for fun. With water pump lube it reduces to a drip once engine is warmed up. I’ve replaced the pump twice in 20 years with same results after a year or two.
Given the time, I find it is cheaper to take our toys for a ride on a monthly basis than it is to let them sit unused for several months.
No all I need is to find the time. :)
Les Burt
Montreal
'75 Eleganza 26'
> On Feb 24, 2018, at 12:23 AM, Jim Kanomata wrote:
>
> Fuel pump must replaced if not in last 5 years.
> Reason is the Ethanol is eating the rubber diaphram that is already old.
> I have seen the ruptured fuel pump take out engines.
> I requested to my techs to replace all the rubber in the fuel system, they
> left the old pump and it went and filled the crankcase with fuel and ruind
> a good engine.
>
> On Fri, Feb 23, 2018 at 12:09 PM, Matt Colie wrote:
>
>> BobDunahugh wrote on Fri, 23 February 2018 01:03
>>> My radiator is out. So it's simple to change the water pump. PO rebuilt
>> the 403 in 1994. Put 1880 miles on it in 1995. Then this 78 Royale was
>>> parked outside from Oct of 1995 to Oct of 2015. Now we've put 12,000
>> miles on it. The radiator is a mess inside. I'm changing that. So what
>>> condition is the water pump in? Bob Dunahugh 78 Royale
>>
>> Bob,
>>
>> To answer your question as best it can be answered.
>> Jacket water pumps in passcar (as close to the coach as I know) die of
>> either:
>> A - Seal failure
>> B - Bearing failure
>>
>> Seal failures used to be common before the Stellite/Ceramic mechanical
>> seals. These are lubricated by the coolant, and come very close to not
>> wearing
>> at all, but they do this with a very little, but almost continues leak
>> when running. If you look "under the chin" of any new water pump, you will
>> see
>> a small feature that has a plug in it with a tiny hole. That is a
>> "Warranty Avoider". The drips from the seal go in there instead of into the
>> bearing (pumps have always had the feature to leak coolant and not have it
>> end up in the bearing), and there is often some packing in the space to
>> help the trapped coolant evaporate before an owner sees it and complains.
>>
>> Bearing failures used to be common before synthetic grease. Normal grease
>> has a limited life and this is way we used to repack wheel bearings all the
>> time. When the grease did age out, the bearing was soon toast. That was
>> not uncommon at 15~20 years, but it could easily happen sooner. How long is
>> a synthetic grease good? I don't know. I have things here that I
>> repacked with a synthetic two houses ago.
>>
>> So, is it a good thing to change out on general principle?
>> As said above, it is kind of a slongaz thing.
>>
>> Matt
>> --
>> Matt & Mary Colie - '73 Glacier 23 - Members GMCMI, GMCGL, GMCES
>> Electronically Controlled Quiet Engine Cooling Fan
>> OE Rear Drum Brakes with Applied Control Arms
>> SE Michigan - Twixt A2 and Detroit
>>
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>
>
>
> --
> Jim Kanomata
> Applied/GMC, Newark,CA
> jimk@appliedairfilters.com
> http://www.appliedgmc.com
> 1-800-752-7502
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[GMCnet] Do our engine water pumps die from age, or miles ?
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Re: [GMCnet] Do our engine water pumps die from age, or miles ?
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Re: [GMCnet] Do our engine water pumps die from age, or miles ?
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Re: [GMCnet] Do our engine water pumps die from age, or miles ?
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Re: [GMCnet] Do our engine water pumps die from age, or miles ?
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Re: [GMCnet] Do our engine water pumps die from age, or miles ?
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Re: [GMCnet] Do our engine water pumps die from age, or miles ?
By: jimk on Fri, 23 February 2018 23:23 |
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Re: [GMCnet] Do our engine water pumps die from age, or miles ?
By: GMC.LES on Sat, 24 February 2018 09:37 |
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Re: [GMCnet] Do our engine water pumps die from age, or miles ?
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Re: [GMCnet] Do our engine water pumps die from age, or miles ?
By: GMC.LES on Sat, 24 February 2018 09:50 |
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Re: [GMCnet] Do our engine water pumps die from age, or miles ?
By: GMC.LES on Sat, 24 February 2018 09:49 |
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