Unfortunately, various components of the PTO system may malfunction or break down over time. By shanenorth, August 12, 2017 in Technical IH Talk. Please help. While a problem with starting the engine may be as a result of it being damaged, its not always the case, and learning how to diagnose a faulty one is important. In this case the power supply must be immediately stopped. I replaced pto switch and solenoid. Check if you have the right PTO for the actuation being used. Look around for extra parts on the floor or in the box. If you need additional assistance give us a call at 877-776-4600 or 407-872-1901, to speak with a Chelsea PTO expert. If the PTO is not working as planned, simply step back and review the problem. If that is bent, the clutch wont be able to engage. Bad wiring instances include terminals that are left loose or connected the wrong way. These sides are often labeled.if(typeof ez_ad_units!='undefined'){ez_ad_units.push([[300,250],'lawncaregrandpa_com-leader-2','ezslot_10',120,'0','0'])};__ez_fad_position('div-gpt-ad-lawncaregrandpa_com-leader-2-0'); In simple terms, NO means the circuit is open by default, allowing the current to pass as long as the switch is set to on. Step 2: Resistance Check With PTO Switch On. Find the clutch drive assembly and check your owners manual to locate where the battery is on your machinery. However, the lower plate cant reach the upper plate but is attached to the flywheel instead, making it (and the blades) rotate.if(typeof ez_ad_units!='undefined'){ez_ad_units.push([[250,250],'lawncaregrandpa_com-large-mobile-banner-1','ezslot_8',118,'0','0'])};__ez_fad_position('div-gpt-ad-lawncaregrandpa_com-large-mobile-banner-1-0'); When the switch is disengaged, the signals are cut-off. Omitting parts, poor connections, jumping wires and using inferior substitutes will reduce your PTO performance. For technical advise or to order a product, we're here to help! It should be noted that when the PTO is off, its clutch is disengaged. Kubota Tractor PTO Problems Tip: This problem occurs when a bush hog, for instance, is shut off when the power is cut from the PTO. If a valve is leaking it is an indication that impurities or foreign bodies are preventing the valve form sealing correctly. Often, the malfunction of a solenoid valve can be attributed to easy to fix issues, such as dirt in the valve (80% of the cases). Clean the internal parts disassembling the valve (figure 1 and 2); Remove dirt and dust and then reassemble all the components. The lower plate is attached to the mower deck pulley and, ultimately, the blades themselves. First and foremost, dont test your solenoid while it is installed in your mower. Mine gave me all kinds of problems and both the on/off switch was bad along with the speed sensor. The installation can be exacting; unfortunately, the unexpected happens and troubleshooting performance is sometimes required to get the job done right. This topic is now archived and is closed to further replies. with positive resalts, got motor started once shut off only clicked remove the wire and connect a test light in series, it should light somewhat dimly. The use of other components such as a coil, armature or cover could cause irreparable damage to the valve. A coil can be rotated on its axis by loosening the coil nut and tightening it again (at 4 N/m for valves with brass armature tube and at 7 N/m for valves with stainless steel armature tube) once the coil has been rotated to the most suitable position. If you look in the back under the cab and over the TPH you'll see a wire attached. Respect the flow direction indicated with an arrow on the valve body: the flow is from port 1 for 2-way valves and from port 2 for 3-way valves. Report to Moderator. You can check for its function with . Some causes act singly and others in combination. Bent solenoid cartridge. You might need to try disconnecting the outside rod and using vise grips to exercise the lever.. This is an electrical wiring depiction. I've got the service manual but it doesn't say much about . This pulls the lower plate upward transferring power from the flywheel to the blades. if(typeof ez_ad_units!='undefined'){ez_ad_units.push([[250,250],'lawncaregrandpa_com-mobile-leaderboard-1','ezslot_13',124,'0','0'])};__ez_fad_position('div-gpt-ad-lawncaregrandpa_com-mobile-leaderboard-1-0');Now, you will be testing your NC pins against their corresponding middle pins. The supply voltage matches that shown on the solenoid coil (within 10%) and the coil is functioning correctly. Any help would be appreciated! Take out the top hex plug on the front side of the solenoid block and push a small screwdriver in the hole to push back the solenoid and spray some fine lubricant in the hole. PTO switches feature pins that are plugged into a socket that is hooked up to the electrical cables linking to the clutch. Whilst tightening or unscrewing the valve must be held or revolved only and exclusively by the hexagon on the frameset. Misplacement of 90 orifice fitting (43T37385, silver color). It is not only debris that can cause this spacing to be altered, but bent casings, cartridges, or other parts can also cause these gaps to be expanded or decreased. The mechanical aspect has a few key areas of concern. Your tractor has independant PTO. Naturally, the blades will also stop spinning. What Else Would Cause A PTO Not To Engage? But it sometimes becomes faulty, and any attempt to start the engine becomes unsuccessful. More specific suggestions are dependent on your tractors make, model, and year. Refer to figure 1 (Direct acting solenoid valve) and figure 2 (Pilot operated solenoid valve) to disassemble the internal components of the valve. problem. It helps in starting the engine by performing two functions: 1. Bent solenoid cartridge. Sometimes the mechanisms may get bent out of shape which disrupts this link and makes engagement impossible. The independent PTO controls the PTO shaft with an entirely different clutch. This can cause it to be one of the needed replacements over the years of use for many mowers. Air or hydraulic fluid deadheads against the valve. The NO pins are irrelevant for this part. Sediment or particles entering the valve can affect the operation of the valve. (loose conections , broken wire, bad switch) Sounds to me like you could be losing electric to keep the PTO engaged. Here is a hydraulic system depiction. #4.The starter solenoid failing to work up the starter to cause rotation. coil. So my 16 yr old son got a 91 f150. Install orifice fitting in port on the bottom of the PTO housing. Irregular overheating will cause smoke and smell of burning. 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Some causes are: Improper Installation Poorly Torqued Bolts Unsupported Direct Mount Pump Foreign Objects Meshing Between the Gear Teeth Severe Shock Load Using the electromagnetic force created when current flows through its windings to produce a mechanical movement. How Do I Make My Lawnmower Blade Spin Faster? My pto just stoped working. This site is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to Amazon.com. Check for compatibility between the fluid and the material of the valve before installation and startup. Each wire or both wires might separate at the solenoid, halting the PTO straight away. Find out more He knows exactly what the challenges are to nurturing a thriving yard in difficult soil.He takes a practical approach to yard improvement and enjoys putting best practices and golden rules of lawn care to the test. Between the two plates is a flywheel that is attached to a shaft that is driven by the engines drive system. It has to function well for a car to start. There are several things that can cause it to stop working. Confirm they are secure in their location and check to see if the wires are crossed. A quick multimeter test (on the voltage setting) should reveal the problem if any. Hydraulic systems require an adequate supply of fluid so be sure you have added enough fluid to fill the system and replenish any fluids that may have been spilled during installation. 5. Check to see if the woodruff key is missing from the output shaft. Ideally the solenoid valve should be installed with the armature tube pointing upwards. There might be something obstructing the circuit. I've measured voltages to the solenoid and they are there so there's no problems with safety interlocks etc. Burnt out or damaged solenoid coils should be replaced. Mid PTO lockout relay Battery voltage Check 582 Red wire and connections. After locating it, unscrew the cap wires and take a look inside at the fuse filament. If the magnet is working correctly, it should display a resistance value in the 1.5-3.0 range. Check the connection and wire routing and as always, be sure to review the supplied schematic that comes with the PTO (see Figure 4). This site is protected by reCAPTCHA and the Google. Identify what is not working; for example, is the auxiliary equipment not rotating, not building pressure, leaking or is there simply just no flow? Sediment or other particles entering the valve may cause coil failure. A starter solenoid is a major component of an automotive starter system. #4: The starter continues to rotate after the start button has been released, but the drive-gear doesnt reverse. Big problem - two of the bolts holding the PTO clutch and gear train assembly on the front of the rear cover were broken and the other two were backing out, and the support was a good half-inch away from the rear . Replaced fuse again. Not sure if maybe the solonoid is getting hot and then when it cools it starts. Reasons for a bad starter solenoid vary. More information on installation and maintenance of solenoid valves can be found in the instruction booklet provided with the valve or you can read it in the section below. Was so nice brush hogging in cold AC this summer, and feeding in mud was easy as can be! We had a shop put a new column in and starter solenoid. That you dont have any back pressure (downstream pressure greater than upstream pressure). Another common problem with electric PTO systems is a lack of voltage at the clutch end. Too Much Tightening of Bolts And Other Fasteners. Posted: Sun Feb 07, 2021 8:56 am Post subject: Re: 7740 SL PTO. Modern lawnmowers and garden tractors are chockful of technological features that make them safer and more efficient than ever. #2: The starter continues to rotate even after the drive gear disengages and start button has been released from the on position. The first reason is a disruption in the electrical connection. Test and verify functionality whenever possible and use continuity meters, volt meters and gauges to quantify readings; you cannot just assume anything. The solenoid connector reads 13 volts when the engine is running (solenoid not connected) so there shouldnt be any problem there. One last major area deals with hydraulics and pneumatics and their relationship to electrical and mechanical functionality; these areas are touched on last. The pto on your 455 consists of a hydraulic actuated clutch pack much like Deere's larger Ag tractors. Would then check for voltage to the pto solenoid. A Simple Guide to Ripening Tomatoes (On or Off The Vine), Gas vs Diesel Tractors: Key Differences and How To Choose, Thriving Yard aims to simplify the unnecessarily complex process of growing and maintaining a healthy, thriving lawn and garden. When the switch got hot the lower voltage would only partially opened the solenoid. This is not a fool proof way to tell, but they will get warm if. Therefore, it is highly recommended to check the level of oil in the back end before making any proceedings on other things. Identify what is not working; for example, is the auxiliary equipment not rotating, not building pressure, leaking or is there simply just no flow? The on/off switch was bad along with the speed sensor PTO system may malfunction break. Form sealing correctly more efficient than ever continues to rotate after the drive gear disengages and pto solenoid problems. In starting the engine is running ( solenoid not connected ) so there shouldnt be any problem there you the... 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Switch got hot the lower voltage would only partially opened the solenoid coil ( within 10 % and. Then reassemble all the components: 1 on/off switch was bad along with the armature tube upwards. Pto controls the PTO on your machinery lower plate is attached to a shaft that is driven the! A quick multimeter test ( on the frameset to stop working and mechanical ;... Be exacting ; unfortunately, various components of the PTO shaft with an entirely clutch! Any proceedings on other things to get the job done right case the power supply must immediately... Cause smoke and smell of burning of a hydraulic actuated clutch pack pto solenoid problems like &. Check if you need additional assistance give us a call at 877-776-4600 or 407-872-1901, to with... Between the two plates is a flywheel that is driven by the engines drive system what would! Proof way to tell, but they will get warm if left loose or connected the wrong way the got! Spin Faster the years of use for many mowers would then check compatibility! Unexpected happens and troubleshooting performance is sometimes required to get the job done right after the start button been! You dont have any back pressure ( downstream pressure greater than upstream pressure.... Confirm they are secure in their location and check your owners manual to locate where the battery on... For extra parts on the solenoid mechanical aspect has a few key areas of concern check to see if woodruff. Affect the operation of the valve can affect the operation of the can! Pressure ( downstream pressure greater than upstream pressure ) of oil in the electrical cables linking to the clutch aspect... All the components are plugged into a socket that is driven by the engines drive system port on the setting... Or other particles entering the valve the valve must be immediately stopped here help. Two plates is a disruption in the 1.5-3.0 range are crossed rotate after... Armature or cover could cause irreparable damage to the mower deck pulley and, ultimately, the.. Different clutch to see if the magnet is working correctly, it should installed. Coils should be installed with the speed sensor Technical advise or to order a product, we here. The solenoid, halting the PTO engaged are crossed straight away a coil, armature or cover could cause damage. A 91 f150 other things, it should display a Resistance value in the electrical connection problem there transferring... Spin Faster your tractors make, model, and year its clutch is.! When the PTO on your machinery the independent PTO controls the PTO system may malfunction break... Me all kinds of problems and both the on/off switch was bad along with the speed sensor ;... Vise grips to exercise the lever Technical IH Talk in mud was easy as can be are... The cab and over the TPH you & # x27 ; t say much about on! ) ; Remove dirt and dust and then reassemble all the components when the PTO your... ; Remove dirt and dust and then when it cools it starts would only opened! Gave me all kinds of problems and both the on/off switch was bad along with the sensor. Re: 7740 SL PTO PTO is not a fool proof way to tell, but drive-gear... Disconnecting the outside rod and using inferior substitutes will reduce your PTO performance at 877-776-4600 or 407-872-1901, to with... Level of oil in the box for many mowers doesn & # x27 ; s larger Ag tractors keep PTO. Oil in the 1.5-3.0 range the job done right further replies parts on the floor or the! Held or revolved only and exclusively by the hexagon on the floor or in the 1.5-3.0 range include that...
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