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northeastern Ohio | Deere 4475 (same as New Holland 465) skid loader. Boom lift and bucket tilt are both weak when cold (5-10 minutes after starting). Can barely lift an empty bucket. After it warms up, both will start working normally at the exact same time and instantly. Almost like you flipped a switch. Drive system is not affected.
I am guessing that a relief valve is stuck partially open which allows some pressure to build, but not enough to do much. Parts diagram shows 2 relief valves toward the front of valve assembly (part #6) and one on the rear (part #19) Not sure if this link will take you to the parts breakdown: https://partscatalog.deere.com/jdrc/sidebyside/equipment/78636/refer...
 (4475parts (full).png)
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 4475parts (full).png (138KB - 36 downloads)
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JD 4475 skid steer: sticky relief valve??
