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Bobcat Skidsteer Forums
General Bobcat Skidsteer Forum
Hydrostatic fluid change/purge
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<blockquote data-quote="jeffco" data-source="post: 29268" data-attributes="member: 2081"><p>According to Wix filters the spin on filters are capable of holding 6 ounces of water in their pleats but greatly restricts oil flow. I had a similar problem with water, what I didn't realize was there was about 10 gallons of the 27 was water, when I drained the system you can imagine the cylinders were full of water. At that point I had no clue how much the cylinders held but after servicing with aw46 hydraulic oil (aprox 15 wt oil) and new filters I backed the machine on a couple 2 x 8 planks, started the machine and cycled all the hydraulics, shut the machine down and drained off another 4 gallons of water. I replaced the filters and the first day the oil was a little cloudy, not milky but after 15 or 20 hours of use in 3 days, the fluid is crystal clear. I took a sample and the reservoir is nice and clean. No water at all. So new filters once more before winter and I hope to be all set. My foot plate under the pedals had all but 3 bolts broken off so the water just ran right into the tank directly under it. I know corey can appreciate that front suction filter change. My machine lives instide now but I found out how quick the water can build up and I'm really glad when it froze last winter that it didn't crack something. It is a good idea to try to drain the cylinders because they can hold alot of water. Thats one thing I heard Tazza say over and over but just didn't get it done, who knows why. AW 46 is 28.00 for 5 gallons so 27 gallons is pricey, i want to protect that oil. There was no bleeding necessary, as soon as the machine started the lights went off and I slowly moved the drive levers forward and back and had instant response and immediately lifted the boom very slowly and after three or four cycles it had purged all air from the system and works nice and quiet. I check the sump regularly and there is no water. I really like my machine and I wonder how I did without one for so long. jeffco</p></blockquote><p></p>
[QUOTE="jeffco, post: 29268, member: 2081"] According to Wix filters the spin on filters are capable of holding 6 ounces of water in their pleats but greatly restricts oil flow. I had a similar problem with water, what I didn't realize was there was about 10 gallons of the 27 was water, when I drained the system you can imagine the cylinders were full of water. At that point I had no clue how much the cylinders held but after servicing with aw46 hydraulic oil (aprox 15 wt oil) and new filters I backed the machine on a couple 2 x 8 planks, started the machine and cycled all the hydraulics, shut the machine down and drained off another 4 gallons of water. I replaced the filters and the first day the oil was a little cloudy, not milky but after 15 or 20 hours of use in 3 days, the fluid is crystal clear. I took a sample and the reservoir is nice and clean. No water at all. So new filters once more before winter and I hope to be all set. My foot plate under the pedals had all but 3 bolts broken off so the water just ran right into the tank directly under it. I know corey can appreciate that front suction filter change. My machine lives instide now but I found out how quick the water can build up and I'm really glad when it froze last winter that it didn't crack something. It is a good idea to try to drain the cylinders because they can hold alot of water. Thats one thing I heard Tazza say over and over but just didn't get it done, who knows why. AW 46 is 28.00 for 5 gallons so 27 gallons is pricey, i want to protect that oil. There was no bleeding necessary, as soon as the machine started the lights went off and I slowly moved the drive levers forward and back and had instant response and immediately lifted the boom very slowly and after three or four cycles it had purged all air from the system and works nice and quiet. I check the sump regularly and there is no water. I really like my machine and I wonder how I did without one for so long. jeffco [/QUOTE]
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General Bobcat Skidsteer Forum
Hydrostatic fluid change/purge
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