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#1
06-05-2013, 08:05 PM
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Hydro Pump Gasket
I have a model 149 that I have split and replaced the hydro pump to rear end gasket three times! It continues to leak
 I originally took it apart to repair the trunnion and replace all the seals. Upon putting it back together, I noticed Hytran leaking after two days. So I waited a while, then pulled it apart again. I was very careful to remove the old gasket and clean all surfaces thoroughly with paint thinner. I only use OEM gaskets and I tightened the bolts to spec with a torque wrench. It was a PITA to take it apart again, but everything seemed okay—until two days later, when again it starts to leak. So I pull it apart again. All three times it has been the same thing. I complete the repair, mow the lawn for an hour, park it over night, and no leak. A day or two later a wet spot appears under the tractor directly below where the pump meets the rear end. Everything is clean, and it is not leaking from any of the seals I replaced or the relief valves. I inspected the housing for cracks, and did not see anything. I did the same repair on my other 149, and she does not leak a drop… Any suggestions? Should I double up on the gaskets?
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Tractor #1--1972 Model 149 with rear lift Tractor #2--1972 Model 149 with rear lift 1A tiller w/both extensions, 38" & 42" Mower Decks, Wheel Weights, Ohio Steel Fabricators 10" mold board plow, two 42" snow blades, QA-42A Snow Thrower, Brinly Sleeve Hitch 
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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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