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Home Forum Bulldozer & Excavator Operation and Maintenance Shuttle clutch…

Shuttle clutch…
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December 16, 2011


Jeff

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Hi there—-I've had my crawler—YCT306-S— for several years now,  but only have 100 hours on it.   Recent troubles with clutch/brake engaging/disengaging had me looking in the manual,  and I noticed the book shows the left side hydraulic tank as being used for shuttleclutch oil.   The thing is, that tank has never been used for anything.   The dipstick shows oil,  but it's darker than the right tank hydraulic oil,  which has a window for checking level.   I just presumed everything was running off the right tank,  but that couldn't be if the oil is a different color.   I bought it new and it was delivered this way.

  So for starters,  should the left tank be used or not?   After reading comments on steering,  I'm not sure if they have ever worked,  as I have had to use the brakes for turning all along.   Partial depression does not turn or stop the crawler and the left pedal has always gone nearly to the floor before engaging brake.  

   Now,  after running a very short time,  there is no Neutral—only F and R.   I have to kick it out of gear with the stick on the floor to stop it.         Help!         Thanks,  Jeff

December 18, 2011


Bob Rooks

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Post edited 5:15 pm – December 19, 2011 by Bob Rooks

Greetings Jeff, welcome! laugh

December 19, 2011


Bob Rooks

Lifetime Member Platinum Elite

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If the left reservoir is used there will be a sight gauge on it and there will also be an accumulator used, also, the pump suction will go to that reservoir (this arrangement was used on later models). You have two hydraulic pumps mounted on the right front of the engine, the forward one is for the shuttle clutch and the rear one is for the tractor hydraulics. Curious what oil you are using in the clutch, it should be ISO AW 220 Machine Oil (or equivalent) for proper operation. Also curious if the dozer had proper pre-delivery service. Can I ask who you purchased it from? If purchased from a direct importer it most likely was not serviced. Will address your shifting issue next.

December 20, 2011


Little_Grizzly

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Just a note for clarification, my dozer (2002?) doesn't have a sight gauge on the left reservoir.  Wish it did.

December 20, 2011


Bob Rooks

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Grizz,

If you pop out the fill/vent cap you can install on of these. I know there are some that don't require access to the reservoir but I ran out of time.
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