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    cat 312 workshop manual

    I have one for 312b but your # isn't listed. What are you looking for I can send you pick of the pages hopefully they are the same.
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    hydraulic thumb. mono direction hammer circuit.

    You said that it " appears" that you have a mono directional circuit. Are you positive about this it seems to me that if the operating lever was set up to work in two directions such as a rocker pedal and not just a single direction push that the valve should have the option. if you visually...
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    buying first excavator??

    For property development I would look for a machine with a blade and plumbed forward for a thumb or wrist attachment. The amount of time you can save with attachments is amazing over a straight digger. You can get along without them but once you have them you will wonder how you did . Adding...
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    CAT 312 Auto Throttle and Leaks

    The hoses going into the manifold are not o ring. If the suddenly started leaking check the locating bolt that stops the top half of the manifold from spinning. It can become loose or break . If that happens the upper section will turn when you swing causing the hoses to leak. If that has...
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    Converting from hammer to thumb

    Cabo, I'm not sure about your machine but on a cat the same factory valve will do both functions there is a quarter turn flow valve the changes it into a two way valve by stopping the return flow from going directly back to the tank.
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    Heater in cat 312CL

    Scuba, I have a manual for my 311 that covers some 312s if you get me your serial # i can check to see if it covers your machine.If it does I can scan the pages for you.
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    Cat 312BL: cant get full revs

    Maybe it is something as simple as an adjustment on the actuator rod. If you can manually bring the motor up to speed will adjusting the rod length allow the actuator to bring the motor up and still have enough throw to return to idle?
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    Caterpillar 312bl or 315bl

    In my opinion I don't think you will find any job other than a dead lift that you have to have a 315 for.I might be mistaken but I don't think you can get a blade on a 315and what you get for having a blade over a little lifting power is a no brainer. not only for bulldozing our clean up, but...
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    EX 200-5 no thumb operation any direction

    Ok stupid question is the thumb direct plumbed or quick coupled? Our wrist had a coupler push apart just enough to hydro lock but not enough to separate.
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    kobelco sk130lc mark4 swing motor

    I'm not sure how cold it gets at your local,or if your machine has one ,but on my 311 Cat the rubber boot ripped that seals around the outside of motor it then unbenounced to me filled with water when the temp dropped it froze up I freed up the swing by slowly working the house .It did free up...
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    Does this truck have good power?? Mack w/427

    Fastdirt, I have a 2003 Granite with the e427 8LL trans. It pulls strong but unlike other macks I 've driven you it doesn't lug way down.If you drop below 1200 rpm on a hard pull you will fall out of the turbo a need to drop two gears.I live in the Green Mountains of Vermont.My last truck was a...
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    Tire Question

    If you go to 11.00 22.5s you need to pick up new rims. any truck bone yard will have a load of them or just post on craigslist that you are looking for them. If you go with them and they are bud style you will need to make sure they are truly bud and not hub pilot. You can tell the difference...
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    Whats the craziest thing you have dug up?

    About 20 years ago I was asked to help dig a drain line on the edge of a cemetary.The old caretaker was digging along with his tractor mounted hoe and I was playing ditch monkey. After taking a bucket of dirt I stopped him I had seen a piece of old clay pipe. I asked him if there were any other...
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    broken 312

    Chiefrider, I have a service and parts manual for a 2000, cat312 if you it would help I could try to look up and scan the pages you may need I think they are mostly the same especially if your drives are 1999.
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    Adding aux hydraulics

    Is your machine plumbed forward at all or are you looking to add a whole new section to the valve bank? if You are adding a section it costs about $3000.00.If you have forward plumbing for a Wrist you can use a diverter valve to run your thumb
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    2001 Cat 320 C swing motion keeps locking up.

    My 2000 311b did the same thing it was the swing solenoid on the main valve body about a $50 fix
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    Which motor would you prefer?

    CalChando sure had it right about the detroit 8v92. Anybody who ever had a v8 muscle car has got to love the sound of a 8v92 under power or on the jake.I'm pretty sure the sound adds at least 100 mental horsepower.Just don't roll down the window and plan on listening to the radio. I just...
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    Cat 312B Won't Turn Off

    The engine has an electric solenoid that strokes the fuel shut off on the injector pump when you shut off the key.Then it returns to the run position after a few seconds.Disconnecting the power won't work as it takes power to run the solenoid circut through it's cycle.You should be able to...
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    Need Part for 312CL

    www.machinerytrader.com They list a couple of dislmantled machines of that model.When you go to the site scroll down towards the bottom for the link to dismantled listings.
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    Wooo!!!

    Some examiners can be really bad.When they first started requiring cdls I drove with one hand on the wheel and one one the shifter like I had been for years and still do At the end of the whole test he said .Nice bit of driving to bad you failed automaticly for one hand on the wheel.Like it...
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