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  #1  
Old 03-16-2021, 02:35 PM
MRR90 MRR90 is offline
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Default Manual or automatic relief valves?

I recently acquired a 1975 QL 1450 that has manual relief valves in it. The p.o. also gave me automatic valves that he pulled out of a 1650 Parts machine he had(along with some other goodies). I'm planning on sending one set of these valves out to be rebuilt I was curious if anyone had any insight as to if manual or automatic valves work better or have more life longevity. I understand the benefits of the automatic valves ( don't need to use the lever to push or Tow), more so looking to see if either one would last longer than the other.
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Old 03-16-2021, 02:37 PM
R Bedell R Bedell is offline
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The "automatic" type is by far the standard, replacing the manual type. It is getting harder and harder to find the manual type.

BTW: Welcome to OCC.........
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Old 03-16-2021, 10:55 PM
West Valley G West Valley G is offline
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I don't know that one could say which one is the better way to go.
I have one set that is 30 years old and works just fine, automatic. Another that
is 50 plus years old and works just fine, manual. Not to hard to push the
lever down on the manuals. I believe they were both a pretty safe bet.

Ken
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Old 03-16-2021, 11:27 PM
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Billy-O Billy-O is offline
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With the manual valves, I think you are less likely to find your tractor rolling down the hill less you set the parking brake if you have the automatic valves.
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Cub Cadet is a premium line of outdoor power equipment, established in 1961 as part of International Harvester. During the 1960s, IH initiated an entirely new line of lawn and garden equipment aimed at the owners rural homes with large yards and private gardens. There were a wide variety of Cub Cadet branded and after-market attachments available; including mowers, blades, snow blowers, front loaders, plows, carts, etc. Cub Cadet advertising at that time harped on their thorough testing by "boys - acknowledged by many as the world's worst destructive force!". Cub Cadets became known for their dependability and rugged construction.

MTD Products, Inc. of Cleveland, Ohio purchased the Cub Cadet brand from International Harvester in 1981. Cub Cadet was held as a wholly owned subsidiary for many years following this acquisition, which allowed them to operate independently. Recently, MTD has taken a more aggressive role and integrated Cub Cadet into its other lines of power equipment.

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