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Bobcat Skidsteer Forums
General Bobcat Skidsteer Forum
hydraulic control valve in 443 leaks need advice
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<blockquote data-quote="mmsllc" data-source="post: 90968" data-attributes="member: 13117"><p>I AM CURRENTLY RESEALING A BOBCAT 751 LOADER CONTROL VALVE. MY MACHINE WAS NOT AS EASY TO WORK ON BECAUSE OF ALL THE HARD METAL HYDRAULIC LINES THAT INTERFERE WITH REMOVING THE VALVE AS AN ASSEMBLY. I WOULD HAVE REPLACED THE SEALS WITH THE VALVE STILL IN PLACE, BUT THE FUEL FILL HOSE & CLOSE POROXIMITY / LACK OF ROOM DUE TO THE VALVE BEING TOO CLOSE TO THE FRONT BULKHEAD / HAND CONTROL AREA THAT WOULD NOT ALLOW IT TO BE DONE EASILY. I WILL SAY THAT RESEALING THE VALVE IS A VERY STRAIGHT FORWARD PROCESS, ESPECIALLY IF YOU REMOVE THE VALVE FROM THE MACHINE. IT IS NOT A FAST JOB. BUT IF YOU HAVE ENOUGH ROOM & THE AREA IS CLEAN, THEN YOU MIGHT BE ABLE TO RESEAL IT WHILE STILL IN THE MACHINE. JUST A WORD OF CAUTION, DO NOT REMOVE THE "C-CLIP" FROM THE LOWER SPOOL VALVE, JUST REMOVE THE ENTIRE SPOOL VALVE AS AN ASSEMBLY. (DOING SO WILL REMOVE THE CHANCE OF DISTURBING THE FEARED DETENT BALL BEARINGS EVERYONE MENTIONS!) DEPENDING ON THE AGE OF THE MACHINE & LEVEL OF MAINTENANCE YOUR MACHINE HAS GOTTEN IN THE PAST, IT IS A VERY GOOD IDEA TO REPLACE THESE SEALS DURING THE WINTER SEASON / SLOW TIME OF THE YEAR; SO YOU KNOW IT WILL NOT GIVE YOU PROBLEMS LATER ON WHEN YOU ARE IN THE BUSY SEASON. THE SEALS ON MY VALVE WERE SO OLD THAT THEY WERE ROCK HARD & NOT DOING MUCH IN THE WAY OF SEALING ANYTHING.</p></blockquote><p></p>
[QUOTE="mmsllc, post: 90968, member: 13117"] I AM CURRENTLY RESEALING A BOBCAT 751 LOADER CONTROL VALVE. MY MACHINE WAS NOT AS EASY TO WORK ON BECAUSE OF ALL THE HARD METAL HYDRAULIC LINES THAT INTERFERE WITH REMOVING THE VALVE AS AN ASSEMBLY. I WOULD HAVE REPLACED THE SEALS WITH THE VALVE STILL IN PLACE, BUT THE FUEL FILL HOSE & CLOSE POROXIMITY / LACK OF ROOM DUE TO THE VALVE BEING TOO CLOSE TO THE FRONT BULKHEAD / HAND CONTROL AREA THAT WOULD NOT ALLOW IT TO BE DONE EASILY. I WILL SAY THAT RESEALING THE VALVE IS A VERY STRAIGHT FORWARD PROCESS, ESPECIALLY IF YOU REMOVE THE VALVE FROM THE MACHINE. IT IS NOT A FAST JOB. BUT IF YOU HAVE ENOUGH ROOM & THE AREA IS CLEAN, THEN YOU MIGHT BE ABLE TO RESEAL IT WHILE STILL IN THE MACHINE. JUST A WORD OF CAUTION, DO NOT REMOVE THE "C-CLIP" FROM THE LOWER SPOOL VALVE, JUST REMOVE THE ENTIRE SPOOL VALVE AS AN ASSEMBLY. (DOING SO WILL REMOVE THE CHANCE OF DISTURBING THE FEARED DETENT BALL BEARINGS EVERYONE MENTIONS!) DEPENDING ON THE AGE OF THE MACHINE & LEVEL OF MAINTENANCE YOUR MACHINE HAS GOTTEN IN THE PAST, IT IS A VERY GOOD IDEA TO REPLACE THESE SEALS DURING THE WINTER SEASON / SLOW TIME OF THE YEAR; SO YOU KNOW IT WILL NOT GIVE YOU PROBLEMS LATER ON WHEN YOU ARE IN THE BUSY SEASON. THE SEALS ON MY VALVE WERE SO OLD THAT THEY WERE ROCK HARD & NOT DOING MUCH IN THE WAY OF SEALING ANYTHING. [/QUOTE]
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hydraulic control valve in 443 leaks need advice
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