But after some time, he noticed that gradually it started to take a few revs above idle to get the clutches for shifting. 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. Bobcat T750 Won't Start, Fuel Starvation, Fuel Pickup Tube Repair Step-1: Check Fuel Related Issue Step-2: Check Your Fuel Pull Solenoid Step-3: Make Sure That Your Tank Gets Sufficient Fuel Supply Step-4: Look At The Lift Pump Step-5: Clean The Whole Engine Area Step 6- Fix The Issues Bobcat T750 Lift And Tilt Not Working: 8 Simple Steps To Fix It Expert Diesel Parts was established in 2015 to serve the farming, agricultural and construction communities across the USA and globally. The Bobcat 3400 UTV model is no exception ensuring the perfect balance of power, quality, performance, and reliability. (Explained for Beginners). It can happen if you have not used your four-wheel drive for quite a long time. Driving the machine on areas that need plenty of balance will require a lot of effort. In my manual it show that as a rail pressure sensor fault. I might get 5 minutes out of it, sometimes a little more, 10-15min. Also, note that experts suggest engaging and driving the four-Wheel Drive for a while once a month to keep it clean and active. 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. Usually, this kind of occurrence is a possible indication of insufficient fuel pressure. Carefully ensure that the hex allen head is fully seated in the nut of the bolt. Fan belt is worn or faulty - Fan belt must be replaced. I was stuck out in the open with a pile of logs in the bucket. The fuel control valves in these injectors are very small and any amount of debris in the injector can get lodged in the control valve and cause problems. Bobcat 3400 UTV model is a formidable competitor, which comes with a continuously variable transmission or CVT for dealing with the toughest jobs, where other UTVs cannot even attempt to perform. If they still dont respond, replace the joystick control circuit hoard. This did work when I ran it dry. About | Contact Us | Privacy Policy Copyright2023. We get asked frequently about whether the inlet metering valve can be checked on the equipment. Before replacing the any common rail fuel injector, cleaning the rest of the fuel system is critical. Replace the battery in this case. In many cases, owners will spend time, effort, and money on repairing the motor, but the problem will persist. **Note: Unless otherwise stated, no labor warranty included**, Join Our Mailing List If you replace the injection pump or injectors and do not replace the fuel rail, there is a chance the debris sitting in the rail from a previous failure will once again be introduced into the components which were just replaced and cause premature failure. Below is a list of products and associated warranties: Fuel contamination is the leading cause of failure, If you are experiencing rail pressure codes or problems, it is most likely an issue with your injection pump or injectors, Keep the fill area on your equipment clean and free of debris, Change the fuel filter regularly to keep your fuel as clean as possible, 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. I should also say that the tank did run empty at one stage, never had problems before that, possibly there is air in the system disallowing fuel to be pulled through. We sell a wide range of parts including the. Choosing a selection results in a full page refresh. If the fuel rail loses pressure due to a clogged filter or other reasons . You are using an out of date browser. Oil thinning, which can lead to catastrophic engine failure. First, you will need to loosen the bolt. Checking this box adds a Core Charge to the product. Excessive battery drain can also cause this problem. Heres a link to our Bobcat troubleshooting article: Bobcat Troubleshooting, Warranty by product type. If you are interested in having us test your injectors, give us a call. Some users who drive the Bobcat tractors on concrete, asphalt, and other types of hard surfaces discover a common problem. We have talked a lot about diesel fuel injectors in some of our other blogs, but today we are going to go over how to remove a diesel fuel injector from a Doosan Bobcat engine. If your filter gets clogged, the hydraulic fluid backs up into the motor which causes high pressure. Some users who drive the Bobcat tractors on concrete, asphalt, and other types of hard surfaces discover a common problem. The first unit had issues at 2600 hours but was repaired under warranty from Bobcat but failed again at 3800 hours. Engine runs for a while then slows, loses power and quits. Thanks for all the advice. The banjo bolt (Item 1) [A] located on the injection pump may be dirty or plugged. ). Black smoke gets extracted when the engine doesnt receive enough air. I removed the fuel filter, some fuel inside, the filter looks okay, but I dont know how old it is, so it might be blocked. In such situations, you can do a couple of things, such as adjusting the sheave width on your secondary CVT to get proper belt diversion, or you can simply replace the belt. Therefore, the best thing to do is to test the fuel pressure with a tester. Bobcat t590 is designed to be durable with minimal maintenance. The reason for this is there is no great way of cleaning the fuel rail. There will be a few more litle hoses to each one to the rear of the head. 9. This component tends to develop fault rather too frequently in some Bobcat tractors. These two are some common symptoms of your bobcat t590 failures. I have an older 543 Bobcat that I use occasionally around the house for landscaping and repair. The bearings will most likely slip into the oil puddles and cause internal damages. I haven't experienced any noticeable difference in power between the new and old. Once the cover is removed you now have access to the injectors hold down assembly. Some tanks also have a filter in the bottom of the tank. However, a faulty charge pump can also contribute to the final failure of the motor drive, although it starts on its own. Please review the return policy for complete core refund details. If you do not, your IMV may be bad or wiring to the IMV may be compromised. Are genuine OE Injectors from a dealer worth the money? With the things you've described, most likely failed lift pump. Many owners who live far away from major towns and cities cant easily access repairs for this frequent problem. My bobcat 743 is puffing some major black smoke when in heavy use. The fuel systems on the Bobcat 1.8L & 2.4L Tier 4 diesel engines are high pressure common rail by Delphi. While this is a good thing since it allows for a smoother ride, tires with too much air can reduce the tractors balance. You will need to start by removing the airbox to get access to the injectors. Engine overheats Lack of engine coolant - The cooling system needs to be refilled and checked for faults. SPONSORED. The valves should open and close fully. Fuel odors inside and around the car. Core Charge Required The tractor tires do not last as long as expected. If the return fuel is blocked, pressure increases in the injection pump. Another possible reason can be the false alert from your Four-wheel drive light. Problem With The Electronic fuel injection Or EFI Based on several consumers reports, the 2012 version Bobcat 3400 gas UTV models have issues, such as engines starving for fuel, stalling, missing, and even engine misfiring or backfiring. This is especially the case with owners living in rural areas. The bearing also seems not to last as expected. Diesel Pro has developed an 8-step testing procedure to electronically simulate the on-engine conditions on our test equipment. Bobcat tractors rank among the highly-rated tractors in the market. If your compression is good, it would be worth getting your injection system done. Pressurize the hydraulic system and ensure the pump and engine are running before this check. Welcome to Off-Road Care. Bobcat Tractors are among the top compact utility tractors currently on the market. If someone could explain how the 743 fuel system works I would much appreciate it. This will allow all of our members to see your question and give you the best chance to be answered. Once all screws are off, remove the cover. Generally, when the four-wheel-drive lights are on, it indicates that the drive is engaging correctly. Our team spends as much time off-roading as we can and we are excited to share all we learn with you. Makes sense. Things can even get worse if there is an extra occupant in the cab. Most Bobcats of the late 90's vintage have the tank under the engine and the fuel line goes to a steel 90 degree fitting on top of the tank. The brand employs top-notch manufacturing techniques, yet the tractors are reasonably priced. Is this rear pipe the problem? We'd appreciate any help you can offer in spreading the word of our new site. One particular 2011 version user has mentioned that initially, he loved riding the UTV and had no complaints at all. 721 Bobcat Injector Pump Shimming Gaskets, Problem with joystick buttons Bobcat S175. Do not forget to check on your pressure gauges condition and replace it if needed. This article will discuss how to troubleshoot the common Bobcat t590 problems. The appearance may be different than you're accustomed to but we will work on restoring things as closely as possible. High pressure builds until the oil seal eventually fails. This Max fuel stop screw just limits the maximum amount of fuel that can be delivered to the engine at max load condition. bobcat t590 air in the fuel system problem If you ever have an air leak in the fuel system you will need to prime the fuel system. It can happen when too much fuel gets injected into the combustion center. You will need to remove the hold down clamp and the bolt. 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 post is a list of all the repair posts in that thread. For a better experience, please enable JavaScript in your browser before proceeding. So, lets learn about the 5 most common problems that one might experience with the Bobcat 3400 UTV-. Both pipes feed in at the top of the tank, so clearly the engine must be doing something to create a siphon affect. Hydro-lock, which can lead to catastrophic engine failure. The fuel control valves in these injectors are very small and any amount of debris in the injector can get lodged in the control valve and cause problems. Turbochargers: 12 Months, Unlimited Miles/Hours A common issue with the Bobcat tractors is the charge pump or leaking brake seal. Diesel Pro can test your injection pump. If they malfunction, the steer responds late. This process looks fairly similar for each fuel system so let's get started. 1. 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. Atart at one end and remove from the inejctor and pump. The injectors will bleed rail pressure through the fuel return or could even have a nozzle stuck open (less common). I have covered the possible solutions as well . Bobcat t590 is one of the greatest additions of them. Now go ahead and remove the fuel line on the injector that you need to replace by unscrewing both caps on each end of the fuel line. for News, Products & Specials, Troubleshooting Bobcat Doosan D18 | D24 | D34 Fuel Systems. Does anyone know if Bobcat has started to use these fuel recirculation systems on the newer machines ? Regardless of these problems, Bobcat tractors are mostly reliable. Sometimes, the steer doesnt respond at all. And this is common with tractors that are used for lots of work. These fuel lines are bolted down pretty firmly and it can be easy to damage a fuel line or not properly seal it back. I have been on several different equipment forums and have seen people saying basically these two things. It appears to be a gravity fed system somehow. The bobcat t590 comes with a rear mount diesel-run engine. 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. There is a 12 month unlimited hours warranty on this fuel injector. But they are not without a few drawbacks. Type above and press Enter to search. Also, the service light turning On can indicate the bad switch, sensor, or 4WD linkage. We work with a lot of Doosan's D18, D24 and D34 engines which are commonly used to power skid steer loaders, excavators, track loaders, tow compressors and toolcats. Ultimately, it enhances your site productivity. Refill the fuel tank with the right amount of diesel. Ideally, the charge pump releases the required pressure to the brakes and prevents a free fall drive. Here are 4 common problems of bobcat t590. So if you have limited space but need maximum lift height, this is the one you should go for. 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. $69.99. Next, you will need to get access to the injector hold down bolt. The machines have their strengths and weaknesses just like any other tractors from other brands. Or you may be experiencing some issues with your machine and need to test your injectors to determine if they are faulty. This pipe seemed quite loose, so before attempting to start the engine, I cut a small piece off the end and used a new clamp. One quick check you can do with the Inlet metering valve (IMV) is to put your finger on the valve and turn the key on in the equipment. If the injection pump is failing, the pump will have a difficult time keeping up with desired engine rail pressure. We welcome you to register using the "Register" icon at the top of the page. If you are interested in having your pump tested, give us a call. The drive motor is one of the powerpoints of these tractors, especially the Skid Steer Loader. for the D24, D34 and D18 engines. Some bobcat 3400 owners have also complained about their encounters where the four-wheel-drive does not engage property even when the four-wheel-drive lights are on. D34 Fuel Injector: 7261663 Bobcat Doosan D34 Fuel Injector As a result, he was forced to shut down the engine and had to rock the engine in order to free the clutch so that the gear shifter can start shifting. It can happen when the ECU loses the connection or contact with the Transfer case actuator motor or the front different actuator. Scloll down until you get to the skid loader section. Your bobcat t590 skid steer filter needs to be replaced after a certain time. 2. Then comes the hydraulic pump. There shouuld be a pickup screen with a one way valve in the tank. Thankfully, Bobcat provides a solution to this problem by designing reinforced tires that can withstand hard surfaces. First raise the lift arms of the machine and install an approved lift arm support device. If the belts become loose, it will cause the engine to lose power. There can be other parts or components involvement causing this shifting trouble too. I assume it must pressurize the tank so fuel can flow, or something, I'm not sure. One of the convenience features that people look forward to when buying heavy-duty equipment such as tractors is the availability of spare parts. 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. Heres a quick rundown of the major pros and cons. Select Common Rail Injectors: 24 Months, Unlimited Miles/Hours However, just like other machines, you can face some problems with this one also. I discovered that if I squeezed the fuel primer ball every 15 seconds, the unit would stay running. 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. As we spoke about the injection pump and rail pressure earlier, the fuel injectors can also bleed rail pressure. https://spotifyanchor-web.app.link/e/jY1o8cQ3XwbAmazon Affiliate Links:Injector Leak Tester https://amzn.to/3oV4yJvMy cool orange gloves https://amzn.to/3oU0qtk#bobcatrepair #howididit #bobcat Still, many of the tires in some models cant resist hard, solid surfaces. Another necessary check is the leaks or poor fits in the hydraulic lines. 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. The bucket fails to tilt and lift when the pinouts on your loader's harness plug are not compatible with the bucket. Step 1. High-pressure common rail fuel system is an advanced fuel injection design that regulates fuel pressure and injection timing. Later in August 2018, the company recalled a total of 2,700 units of 3400 and 3400XL UTV models. For a better experience, please enable JavaScript in your browser before proceeding. All Other Products: Warranted against defects of material/workmanship as shipped D18 & D24 Injectors: 7275454 FUEL INJECTOR Repair them if there are any. Make sure to remove the cover before removing the injection fuel lines. You should also check the fuel cap to make sure it is venting. Open the cap on your fuel tank. It may not display this or other websites correctly. JavaScript is disabled. Contents hide Fuel gauge not working Excessive black smoke on the right side of the engine Cylinder #5 misfire code P0305 Two wires on the injectors run back to a harness The connector had been cut and part of it was missing The fuel gauge shows empty when it has a full tank There are safety switches throughout various panels and the drivers seat. The injectors also have a rubber cap over it. Visit us at www.4tetradgroup.comTo schedule a consultation: https://www.4tetradgroup.com/consultationshttps://www.4tetradgroup.comhttps://www.tetradcycles.comhttps://www.instagram.com/tetradgroupllc/https://www.instagram.com/tetradcyclesCheck out our new podcast where we discuss Bobcat and other compact construction equipment. It has the highest lifting height in the 500 series. Hi folks. Required fields are marked *. Clogged filters for the oil case drains also contribute to the failure of the motor. Big snow chains on front tires only: is there slip between front and back wheels to allow for the now larger dia front tire. You are using an out of date browser. This means that the tires will still have a shorter lifespan if used on surfaces they are not designed for. Another common issue for drive motors is clogged case drain filters. Whenever we talk about any skid steer problem, this engine issue always comes first. Some owners have mentioned that besides all the amazing features, the Bobcat 3400 is not the best option when considering a vehicle for straight-line performance. Something seems to be disallowing fuel through. After you've made a number of posts you will graduate to Full Member status where you'll see a few more privileges. So wear gloves and safety goggles while performing this check. Perhaps you are looking at doing some maintenance work on your parts in which you should also review this guide on how to clean your injector at home. The Max fuel adjustment screw on the injection pump is sealed/wired by Kubota as a tattle-tale so that Bobcat and Kubota can see if it has been tampered with. Bobcat is one of the major manufacturers of skid steer or track loader for the last 50 years. Purchase your parts from us today or reach out if you have any questions. Engine oil level is insufficient - Check and refill engine oil. There is a bleed screw that is on the pump where the fuel line connects. In that meantime, corrosion has already built against the parts and the actuator which are responsible for engaging. While researching and going through several online reviews, articles, blogs, and user forums to see how the consumers feel and react after owning the Bobcat 3400 UTV model, I discovered that most users are quite satisfied with their experiences. But if it constantly jumps out when you put power into it, that simply confirms something is wrong with your four-wheel-drive system. Warbird does Cat make a switch for the pattern changer on their machines or is it just left joystick operates machine and right joystick operates loader/bucket. Thank you! The inlet metering valve is responsible for metering rail pressure on the Bobcat D24 and D34 diesel engine. Make sure it is working as per the specs. According to most customers, the Bobcat T590 is a great compact track loader for loading and unloading tasks. In many cases, the tractor operator will have a tougher time getting full control of the machine, especially when maneuvering. Questions about fit? Have you checked your air filters too? If the injection pump is failing or has failed, the engine may not start or run but with low power. But sometimes you need to replace the whole system, which costs a lot. 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. 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. Finally, check all the seals and fittings to the control valves. Some also claim that after a further investigation, they found out they do not have a dirty or clogged fuel pump and still have this commotion on their vehicles. So keep them under regular maintenance. Regardless of how durable and well-built a tractors components and parts are, they will eventually break down and need replacement. This process looks fairly similar for each fuel system so let's get started. It then goes to the lift pump then to the injector pump. I used the hand pump to feed fuel into the glass bowl. You will need to remove each rubber cap. Restore performance to your Doosan Bobcat D18 and D24 Tier 4 diesel engine with the brand new 7275454 Delphi fuel injector. See our core policy by clicking return policy at the bottom of the page. To make things worse, the problem can be tricky to figure out. Whether you need to clean the injector, take it to a dealer, or replace it, its a fairly simple process to remove a fuel injector from a Doosan Bobcat engine. The fuel filter in the glass container after the hand pump is a steel cased filter a little like an oil filter. The continuous deterioration of the charge pump leads to the motor becoming weak or the tractor beginning to tilt to one end. Join Our Mailing List If your model has a belt-driven pump, maintain that the belts are not worn or loose.