Bob Rooks

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  • in reply to: backhoe thumb #37047
    Bob Rooks
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      $200 for a thumb? That's almost too good to be true. hailking

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      in reply to: Laidong 4L22D Engine Thermostat #37045
      Bob Rooks
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        That is correct David. In old raw water cooled marine engines. There was something magic that happened to salt water and cast iron when it reached 150°F. The cast iron turned black and began to disappear.

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        in reply to: backhoe thumb #37044
        Bob Rooks
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          Great. Lets see some pics when you get it installed.

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          in reply to: backhoe thumb #37041
          Bob Rooks
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            I predict you will be using a manual thumb soon. laugh

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            in reply to: backhoe thumb #37040
            Bob Rooks
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              This is the type valve you want if want to add a hydraulic thumb and you don't have a power beyond port. I used this type valve in my excavator dozer blade circuit. For instance, you could, say, install this valve in your right side stabilizer circuit. Then when you wanted to use the thumb just flip the toggle switch and use the right side stabilizer control valve to operate the thumb. Be sure to install a pressure relief valve in the return line set to about 1,750 psig to avoid damage to the thumb, and possibly shearing pins.

               

              http://www.princessauto.com/pa…../8051799.p

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              in reply to: Laidong 4L22D Engine Thermostat #37039
              Bob Rooks
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                roflmaoroflmaoroflmao

                 

                MisterPat,

                Without seeing your thermostat, it's impossible to guess. I would take it to NAPA or any good auto supply house and have them physically match it up.

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                in reply to: Laidong 4L22D Engine Thermostat #37037
                Bob Rooks
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                  Hate to disagree with “Bob from Nortrac”, apparently he doesn't understand thermal efficiency and the dangers of running an engine cold.

                  I installed a 180° thermostat in my dozer with the TY395 engine and I could tell the difference in sound and performance. My fuel consumption went down, and my engine oil life improved. I currently have 260+ hours on the oil and it's still perfect according to the analysis.

                  My background knowledge is from being a licensed diesel engineer for many years.

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                  in reply to: Guilin 252 track parts #37032
                  Bob Rooks
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                    Kinda sorta. Depends if you're using it in a lot of rocks. Then you have to be pretty careful. Glad you got it. wink

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                    in reply to: Jinma 284 fuel Injection problem #37027
                    Bob Rooks
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                      If it isn't smoking and there are no perceivable loud knocks there is no over fueling (there is no flooding in a diesel engine – no carburetor laugh).

                      There is no direct mechanical connection between the hand throttle controls and the fuel rack. The fuel rack is operated through the governor flyweights. All the hand throttle does is control the flyweights via the speeder spring. You may have a sticking rack, which is not uncommon, or you may have a weak speeder spring, very uncommon. Since it is a brand new unit, I suspect a sticking rack. What oil are you using in the injection pump?

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                      in reply to: Guilin 252 track parts #37026
                      Bob Rooks
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                        There is a lock bolt in the idler yoke that must be loosened first. Are you saying the nut on the shaft is frozen? You may have to unbolt the tensioner assembly in order to move it back enough.

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