Usually a bad or failing fuel injector will produce a few symptoms that can alert the driver of a potential issue 1. The injectors also have a rubber cap over it. Also, check the entire fuel system thoroughly and clean up the fuel system and all electrical connections, if required. Thats because the fuel cannot flow due to the clogged filter eventually resulting in the power loss of the loader. I'm not a diesel mechanic by any means but I'm also not a moron so I don't see any reason why I can't figure it out with a little guidance. You should get 400-450PSI on a good engine, i was told 300-350 is still acceptable for home use. All connections should be secure properly for the steering to respond. At one time, the engine completely refused to start, even the next day. I have been on several different equipment forums and have seen people saying basically these two things. The pipe does seem a little too large for the fitting though, so doing it up tight wasnt easy, especially at the back where it was hard to get to. If the situation is not that bad, cleaning these components will do the work. Refill the fuel tank with the right amount of diesel. Welcome to Off-Road Care. Next, you will need to pull off the top cover that sits underneath the fuel lines. Now that the hold down clamp is removed you can detach the injectors safety lock and unplug the injector. , you can also contact us at contact@expertdieselparts.com. Your email address will not be published. Thankfully, Bobcat provides a solution to this problem by designing reinforced tires that can withstand hard surfaces. Engine misfires and decrease in power, acceleration, and fuel efficiency One of the most common symptoms of a potential problem with a fuel injector is engine performance issues. Return fuel passes through the fitting to return to the fuel tank. Apart from these two, make sure the engines throttle cable is secured to the throttle body all the wiring and connector pins are in good condition without any corrosion or damage. The first thing to inspect is the hydraulic fluid level. (Explained for Beginners), The tractors are economical in the long-run, Versatile machines, useful for construction, landscaping, and farm works, Possible charge pump and drive motor issues, Tires may be problematic on some surfaces. But if it constantly jumps out when you put power into it, that simply confirms something is wrong with your four-wheel-drive system. Additional OEM Bobcat Part Numbers: 7275454REM, 7334032, 7030364, 7334032REM. 5 Most Common Problems with Tracker 800SX, 6 Most Common Problems with Can-Am Maverick Sport, 5 Most Common Problems with Polaris Ranger 66. $69.99. This product has a refundable core charge. In my manual it show that as a rail pressure sensor fault. Before you decide on any plan of action please read this article. It's 2 easy checks and could save some grief. The bobcat cranes are best known for heavy-duty operations. Each will need to be removed. Some users who drive the Bobcat tractors on concrete, asphalt, and other types of hard surfaces discover a common problem. This means the product will ship, you will pay the core charge, and you will be refunded when Diesel Pro receives an acceptable core. My bobcat 743 is puffing some major black smoke when in heavy use. Today it started, ran for about 1 minute and died. It is not uncommon for many Bobcat tractor users to believe that their motor is faulty when the actual problem is with the charge pump. Driving the machine on areas that need plenty of balance will require a lot of effort. The most obvious reason can be the bad, broken, or loose drive belt. Thank you! High-pressure common rail fuel system is an advanced fuel injection design that regulates fuel pressure and injection timing. While other tractor brands work to make stores available in many parts of the country, Bobcat still has a long way to go in addressing this challenge. High pressure builds until the oil seal eventually fails. Carefully ensure that the hex allen head is fully seated in the nut of the bolt. Open the cap on your fuel tank. Both the injectors and the injection pump are highly vulnerable to poor fuel quality, contamination, or foreign debris. The fuel filter in the glass container after the hand pump is a steel cased filter a little like an oil filter. According to most customers, the Bobcat T590 is a great compact track loader for loading and unloading tasks. Give us a call with your Bobcat equipment serial number. Indeed, there are tons of positive reviews about Bobcat tractors, and these are mostly true. Give us a call with your Bobcat equipment serial number. After that, check your primary clutch whether it sticks a little off the throttle and jerks back, which can cause penetrating clutch weights or wasted bushings. And thats it! Many people find the machines practical and functional considering their multi-purpose design. The inlet metering valve is responsible for metering rail pressure on the Bobcat D24 and D34 diesel engine. Inside the tank is a 1/4" ID vinyl tube ending in a steel screen assembly with a check valve to keep fuel from returning to the tank. It may not display this or other websites correctly. Some users get frustrated after searching in vain, and simply decide to install a different brands spare part in their machines. You are using an out of date browser. But the sad news is that he ends up replacing both clutches with new ones without figuring out the actual issue and the problem stayed as it was earlier. Please remember that unless you need to take out all 4 of the injectors, we recommend only removing the ones necessary to prevent damaging fuel lines. With the things you've described, most likely failed lift pump. So, lets learn about the 5 most common problems that one might experience with the Bobcat 3400 UTV-. (You must log in or sign up to reply here. While this may work in a few cases, it is only a temporary solution and will ultimately lead to more problems. Heavy Equipment Forums is scheduled to go offline at 6:30am Eastern Sunday March 5th for an extensive software update. Many users change the oil after 500 hours of use and carry out other routine maintenance to the best of their ability. The fuel just runs back to the tank with the bleed screw open, close it then start the machine. 721 Bobcat Injector Pump Shimming Gaskets, Problem with joystick buttons Bobcat S175. These pumps are very expensive and this might help prevent misdiagnosing the injection pump due to low rail pressure.Want more? One particular user even mentioned that he was constantly having gear shifting issues and he even experienced very rough shifts when the gear originally shifted. Tazza said: There shouuld be a pickup screen with a one way valve in the tank. A quick check you can do with the injection pump is to connect a scanner to the equipment and monitor desired vs actual rail pressure. Next, you will need to get access to the injector hold down bolt. This component tends to develop fault rather too frequently in some Bobcat tractors. If the problem is in the glow plug, it would need some professional inspection to diagnose the exact reason. We can test them, Excavators: E32, E35, E42, E45, E50, E55, E85, Skid Steer Loaders:S450, S510, S530, S550, S570, S590, S595, S630, S650, Track Loaders:T450, T550, T590, T595, T630, T650. The most common reason for failure we see in these injectors is fuel contamination. When this happens the rubber primer bulb in the fuel line . Once all screws are off, remove the cover. Required fields are marked *. Engine overheats Lack of engine coolant - The cooling system needs to be refilled and checked for faults. I opened the air bleed screw and managed to get the engine running, lots of black smoke, as the engine improved I gradually closed the air bleed screw.ran well. Also, note that experts suggest engaging and driving the four-Wheel Drive for a while once a month to keep it clean and active. I have an older 543 Bobcat that I use occasionally around the house for landscaping and repair. They are left with only one quick option, and thats using improvised methods in an attempt to fix the problem. There are about 10 screws that go around the cover. ALL NEW MEMBERS READ THIS FIRST!! As a result, driving up to a precise point at a low range or reverse becomes extremely difficult. Please remember that unless you need to take out all 4 of the injectors, we recommend only removing the ones necessary to prevent damaging fuel lines. When removing injectors, the o-rings can sometimes get stuck in the rail. This fitting can be cleaned, if cleaning This also causes the hydraulic fluid and gear oil to mix which can cause additional problems. It has the highest lifting height in the 500 series. Expert Diesel Parts was established in 2015 to serve the farming, agricultural and construction communities across the USA and globally. So make sure its in good condition and the fuel injector is not clogged. The information here will help you make an educated buying decision if you are eyeing any of these tractors. So, to confirm it check whether the secondary clutch is spinning at idle or not. 9. Something seems to be disallowing fuel through. Next, at the rear of the cab remove the circle access cover located on the side of the cab to disconnect the heater valve, blower fan, and thermostat connector . After checking the fuel filter, its time to check the fuel tank. Refer back to the injector hold down clamp. I might get 5 minutes out of it, sometimes a little more, 10-15min. Step 2. However, a faulty charge pump can also contribute to the final failure of the motor drive, although it starts on its own. Well, guessing that the main culprit can be the primary or secondary clutch was not entirely wrong, but you need to be sure first before you actually take the action. There is a bleed screw that is on the pump where the fuel line connects. Turbochargers: 12 Months, Unlimited Miles/Hours The engine doesn't have the same power as the Kubota and 2. The first post is a list of all the repair posts in that thread. 2023 UpHomely by ISEE PUBLISHING STUDIO. thanks for any help. This is especially the case with owners living in rural areas. Check for any fuel leaks. If the 743B used the same engine as the 743 there should be a lift pump mounted on the side of the injection pump housing. Thank you for visiting HeavyEquipmentForums.com! He even noticed notably low hours while having those issues. Regardless of these problems, Bobcat tractors are mostly reliable. Thank you for joining Heavy Equipment Forums! The appearance may be different than you're accustomed to but we will work on restoring things as closely as possible. Checking this box adds a Core Charge to the product. . Heres a quick rundown of the major pros and cons. With a scanner, you can monitor desired vs actual rail pressure to check and see if the engine has adequate rail pressure. Engine issues, hydraulic pump issues, contaminated fuel all of these are the common problems. Before you get started, please allow your engine to sit for an hour or so to cool off in the case that you were previously using it. My question is: should the ball pump up firm? As we spoke about the injection pump and rail pressure earlier, the fuel injectors can also bleed rail pressure. for News, Products & Specials, 7249380 | Reman Fuel Pump fits Doosan Bobcat D18/D24, 7256772 | Delphi Fuel Metering Valve Fits Doosan Bobcat Tier 3/4, 7030409 | Genuine Delphi Fuel Rail fits Doosan Bobcat D24, 7275454 | Delphi Fuel Injector fits Doosan Bobcat D18/D24, Feel confident purchasing from a company who has been in the fuel injection business since 1985, Not sure whether your injectors are bad?