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Message: <blockquote data-quote="Land-Tech" data-source="post: 11899" data-attributes="member: 1679">After reading all the posts concerning the bobcats with the Duetz engines has got me concerned. My 5635 has got 4400 hrs and you are suppose to replace the timing belt every 3000 hrs (edited by skidsteer.ca) or you may experience partial vave train deconstruction. So I head to the local Duetz rep hoping this was just one of those internet myths,but of course is true and he is well stocked with kits for about $100.00.A shop manual for $45,that explained the procedure in no less than five languages,two guide pins to lock crank and cam for $50 and a special belt tensioning/timing tool that is  essential for $370. I whined about the price of the timing tool so they rented it to for $25 per day and 2 days free cause the rep says since this is my first time,things unforseen might happen.So I start tearing down the gehl, there is no performace problem up to now except for replacing the starter earlier this summer. I'm only doing this out of fear the machine may be incapacitated in a inconveint location and the partial valvetrain deconstruction is certainly a driving force. Unbolting the oil coolers is easy,but the battery has to be removed to access cooler bolts and since this engine is cooled with engine oil no antifreeze to deal with,I did unhook one oil line from the engine to allow room to remove the fan. Then the fan cowling came out next which opened up the front of engine with lots of room to work.Removed fan belt and since there is no water pump behind fan there is only a belt pulley on a bearing.This is combined with a mount for the alt.Three bolts and the whole thing can be set aside leaving only the belt cover to be removed. It's a two piece cover that enables you to get to the timing belt with out removing the crank pulley which I think is a good thing.The seal between these cover sections is questionable to me but whether dust and sand can get in seems possible.All I found in my machine was a blackdust I'm sure was from the belt.The cover is attached with four bolts and and one of those unforseen problems in the form of a screw that had a special head that none of my tools seem to fit. I called it an eveningNext day it warmed up, so I had sanding obligations until the afternoon and then I called a local rental place and asked their mechanic what was up.He said It was a Duetz tool that I needed and the fastner was a SPECIAL DESIGN that was made to keep amateurs like me away from the timing belt.I said sure, and proceeded to borrow it. I got home and got  as far as starting to line up crank and cam and decided to call it a day. I still have a day on the tool rental and things are going well. I wake up in the morning to more than a minium amount of snow is on the ground that I need to plow.Now a snow event will about 14 hr to complete if there is less than 6 in. Some have to be plowed early most are apartment complexes that I plow when everyone is gone, I have no choice but to spend two hr putting it all together and go plow. Will try again at the next break thanks</blockquote>

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