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Message: <blockquote data-quote="Rookie" data-source="post: 39775" data-attributes="member: 4482"><p>I'm having the same type of issues with my 2040 parking brake now only it's the left side that's hanging up. If I rev the engine and jockkey it back and forth it will eventually unlock, but then when operating it sounds like the dog is hitting brake disc trying to engage again, with a loud clicking sound. I have over 1,000 hours on it, and I'm thinking the pump suction strainer has never been cleaned either and could be starving the pump slightly. All hydraulics are noisier than normal. Our ambient temps have been in the low 20's for the past week and I'm thinking that may be part of the problem. The manual says to use AW 46 hydraulic oil in the chain cases, and the hydraulic system. But I'm wondering if AW32 hydraulic oil might be better for cold climates or even a multi-vis hydraulic oil AW32/46/68. Any thoughts?</p></blockquote><p></p>