Komatsu dozer transmission problems. Aug 27, 2013 · I have a 2005 Komatsu D31PX -2...

Komatsu dozer transmission problems. Aug 27, 2013 · I have a 2005 Komatsu D31PX -21A. Maybe the shaft seal in the new pump also blown-out (due to pressure difference, originating from other reasons)? Unlock the secrets of Komatsu Fault Codes with our comprehensive guide. Jul 15, 2025 · Komatsu machines don’t just detect failures—they explain them in detail through onboard diagnostics. Jun 22, 2025 · Transmission problems in a Komatsu bulldozer can significantly disrupt operations, leading to costly downtime and reduced productivity on construction, mining, or land-clearing sites. Everything works great Jan 14, 2025 · Transmission problems can significantly impact the performance of your Komatsu heavy equipment. Nov 11, 2008 · My uncle has a Komatsu D31P dozer that seems to run fine, except when I pull the turning brake (either left or right) it stops. Abstract. Everything looked good. Users should consult Looking for Komatsu D31E-18 Bulldozer parts? You've come to the right place. Sep 1, 2013 · The steering control valve under the joy stick seems to be malfunctioned, and advise? The dozer will bog down and when you wiggle the joystick it will track strait. Jan 17, 2010 · anyway as the bell housing on the ford is 10 mm or 3/8 too small to fit the original twin plate hyd actuated clutch assembly that was in the dozer onto the ford, im considering a dry type ex truck clutch to drive the 3 speed dozer transmission or should i say gear box. However, even the most robust machines can experience problems, and that’s where error codes come in handy. Apr 10, 2017 · Just an update, it ended being the transmission suction screen, removed it, ordered a new screen. Komatsu Clutch Slippage When a bulldozer’s main clutch slips, the engine speed remains normal, black smoke is eliminated, and the working mechanism operates normally, but the machine struggles to climb slopes and may even become unable to move. Everything works great Aug 10, 2021 · Looking at a d39e that has a slipping trans. View and Download Komatsu D85EX -15 operation & maintenance manual online. The new EU Stage IIIB engine platform provides it with increased net horsepower and lowers fuel consumption and emissions. Jan 15, 2013 · I was wondering if anyone can give me some insite to my transmission problem? I am finding black particles in my transmission screen that is clogging it up. Komatsu D65EX-12 Won't Move Forward or Reverse: Causes & Fixes D65EX-12 often faces hydraulic control valve sticking and transmission linkage wear causing movement issues. Find crawler, wheel and swamp dozers on Machinio. Nov 30, 2011 · I have Komatsu D65 PX 12 dozer s/n 60364 with broken transmission. Remove strainer plate on front lower corner of trans. I'm Nov 14, 2015 · Jump to page : 1 Now viewing page 1 [50 messages per page] Sep 26, 2013 · 350 loader,350c dozer winch and arch,450c winch and arch,450e winch and arch,D37p komatsu lgp dozer,D85 Komatsu dozer,D8k Caterpillar. Thanks to the guys here I was able to see the problem was most likely the strainer plugged so I dumped the fluid and After finding and fixing the leak in the transmission, "Miss Komatsu" refused to leave the lake. Users should consult Created Date 2/29/2008 11:06:02 AM This article explores the causes of shift problems in Komatsu machines, focusing on common issues, their diagnosis, and possible solutions. Probably from setting so long but if it does it again I would suspect bad shaft seal on your transmission pump which will cause it to suck air instead of oil. I have changed the oil and cleaned out the Mar 5, 2020 · I have an old Komatsu D155A-1 dozer (serial 10508) that wont move when shifted into gear (forward or reverse) after it has been moving. In this Komatsu TORQFLOW transmission consists of a water-cooled, 3-element, 1-stage, 1-phase and a planetary gear, multiple-disc clutch transmission which is electronically controlled, hydraulically actuated and force-lubricated for optimum heat The service and repair techniques recommended by Komatsu and described in this manual are both effective and safe. to turn the unit, the snatch disengages, pre-venting energy transmission to one Feb 28, 2025 · Id like to hear from folks that have experience with the Komatsu 250 loader transmission operation. it's far pow-ered by an SA6D10E-2 engine and uses a crawler-type steering machine with a grasp for manipulate. Bulldozer. I'm Jun 22, 2008 · There are some aftermarket parts available. D475A-5E0 utility vehicle pdf manual download. First thing we Mar 18, 2012 · Today my dozer started making a winding nose coming from the transmission area under the seat. If it stops moving without grinding or whining, check the transmission linkage for proper engagement first. Is it possible to fit Transmission from other models like D65 E8 (144-15-00019) or similar? 2. An advanced electronic control system . Sadly I got it home and was only able to push over a few stumps before the transmission lost all movement forward and reverse. Original Transmission is 14Z-15-00011 Can anyone share info : 1. Work-Ready & Well-Maintained – Tracks straight, shifts smooth Nov 1, 2025 · Komatsu transmission problems,Komatsu transmissions, as core components of construction machinery, require serious attention to their malfunctions. If the Komatsu WA250-3 won’t move forward or reverse, inspect the transmission damper for wear or damage. My first experience with it was Komatsu internal wet brakes in loaders. The second problem may be additional to the Feb 17, 2023 · Komatsu Machinery is a leader in construction and heavy equipment manufacturing, providing durable and reliable machines to the industry. Sep 24, 2025 · 1. I've operated Cat dozers in the past but have no experience with Komatsu. Dec 19, 2024 · Komatsu D66s questions for the group. Low hydraulic fluid or worn seals can cause drive failure. Common problem on older Komatsu dozers. com. D65EX-18 construction equipment pdf manual download. I am not familiar with the comparability of the D31 with the D41 but I believe they are similar. Also for: Galeo d61px-15. Here is a look at five common problems construction machine owners run into when the transmission is starting to go, what the likely culprit is, and what to look for. Oct 16, 2025 · Decode Komatsu Warning Light symbols instantly. Learn about five common transmission problems, their likely causes, and troubleshooting Feb 16, 2020 · I haven't worked on a Komatsu loader that new but all that I have worked on were electrically shifted. The machine tracks won't turn forward or backward under 1200rpm. ??? New fuel efficient bulldozer New D155AX-6 has achieved both high levels of productivity and fuel economy through usage of SIGMADOZER and automatic transmission with lockup torque converter. New & Used Caterpillar D6, D6G, D6R, D6D, D6H, D6M and D6N crawler dozers for sale in China. Some of these techniques require the use of tools specially designed by Komatsu for the specific purpose. This shop manual provides detailed information on the safe repair, operation, and maintenance of Komatsu machinery, specifically the D41E-6 and D41P-6 models, equipped with the S6D102-1 engine. You get a machine with components that are designed to work together to deliver higher production levels, greater reliability, and more versatility. Also for: D85px-15. This article breaks down key fault codes related to powertrain and transmission systems, with real-world implications and technician-approved troubleshooting steps. Hey! do you need some facts? i got a lot of good to have trouble shooting papers from the Finnish Komatsu importer! May 20, 2012 · Transmission problem, Komatsu doesn´t move. The forward first gear clutch leaks internally in the transmission bypassing the oil cooler. Are they know for any other specific issues? View and Download Komatsu D65EX-18 operation & maintenance manual online. The Komatsu D155A-2 bulldozer is a sequence tractor designed for vaious earthmoving obligations, presenting components just like the blade, raise cylinder, cabin, gasoline tank, ripper, and more. (I am a sucker for things that need work) It is showing 6000 hours. D155A-6 construction equipment pdf manual download. (株式会社小松製作所, Kabushiki-gaisha Komatsu Seisakusho) or Komatsu (コマツ) is a Japanese multinational corporation that manufactures construction, mining, forestry and military heavy equipment, as well as diesel engines and industrial equipment like press machines, lasers and thermoelectric generators. Oct 29, 2013 · Ok guys this is the problem wen you put the shift lever in to neutral she keeps driving forward we hav all ready replaced the lever because its electical shift. I have a Volvo L70B that I'm needing to replace. Looking at a D66s and guy says it won't move. It usually moves initially after sitting a while, but in order to get it to move after that, I have to bleed air out of the transmission filter compartment Jul 14, 2013 · My problem was plugged strainer on the transmission. Jun 1, 2020 · The only connection point of hydraulic and transmission oil is the pump. - An operating weight of 70235 kg (154,840 lb). Oct 11, 2025 · The D65E - 6 would be fitted with the Cummins NH220 motor, the steering pump and the transmission pump are to the left side of the engine back case as you sit, the oil level for the transmission is I feel not checked with a running engine, the steering case oil level being checked on the back wall of the main case by the F/Drive level plugs Dec 30, 2025 · Excavator Forum › Service & Trade › Troubleshooting & Diagnosing « Previous 1 … 68 69 70 71 72 73 74 … 132 Next » Common Problems with the Komatsu D31 Dozer This shop manual provides detailed information on the safe repair, operation, and maintenance of Komatsu machinery, specifically the D41E-6 and D41P-6 models, equipped with the S6D102-1 engine. The Komatsu 250-6 is one that I'm considering. ??? 2 days ago · Why It’s Great: Heavy-Duty Crawler Dozer – Built for construction, land clearing, and forestry work. previous defect is that when in low gear unit is moving well but when changing to high gear unit is lacking of the desired force it should have produce. Jan 13, 2025 · Explore the Komatsu D61PX dozer's specs, common issues, and essential maintenance recommendations for optimal performance. The transmission system is critical for transferring power from the engine to the tracks, enabling smooth movement and control. I ended up moving the dozer a little after trying to mess with the linkage on the left track of the dozer with no luck. Komatsu Clutch slippage is the most common fault in bulldozers. Dec 22, 2024 · Explore the Komatsu D71 dozer's specs, common issues, and practical recommendations for optimal performance and maintenance. Learn our detailed list of fault codes and how to troubleshoot them effectively. We sell a wide range of new aftermarket, used and rebuilt D31E-18 replacement parts to get your machine back up and running quickly. It also touches on preventative measures to ensure the continued performance of the machine's transmission and shifting system. cleaned out the housing and reinstalled with fresh oil and everything works as it should now. Komatsu WA250-3 Won't Move: Transmission Damper Issues WA250-3 loaders may face transmission slippage and hydraulic control valve failures affecting movement. BULLDOZER. Feb 2, 2026 · Excavator Forum › Service & Trade › Troubleshooting & Diagnosing « Previous 1 … 68 69 70 71 72 73 74 … 133 Next » Komatsu D31 Dozer Transmission Issues Jan 14, 2025 · Transmission problems can significantly impact the performance of your Komatsu heavy equipment. Our guide explains red, yellow & green lights to keep your machine running safely. The Komatsu D41P-6 uses a hydroshift drive without a torque converter. Feb 4, 2024 · Sounds like your transmission pump was airlocked. SIGMADOZER developed based on completely new digging theory dramatically increases production. I removed the inspection cover and it does have movement. When the D65EX-12 doesn’t move forward or reverse but engine loads slightly, check the hydraulic control valves and transmission linkages. Also for: D65px-18, D65wx-18. Jul 24, 2025 · Learn why your Komatsu wheel loader has transmission failure and discover expert solutions to fix it fast. This is then used to accurately View and Download Komatsu D155A-6 operation & maintenance manual online. Apr 30, 2019 · Not sure how your machine transmission is set up but to make a long story short, modulation is usually carried out by a valve in the transmission control valve. However, I understand that the Komatsu is hydrostatic where the Volvo is esentially a 4 speed Jan 9, 2025 · Explore the Komatsu D41 dozer's specs, common issues, and essential maintenance tips for optimal performance and longevity. Which means the control won't get any signal 1200rpm for Transmission Control Valve Assembly 113-15-00483 for Komatsu Dozer D31A-20 D31E-20 D31P-20A D31PL-20 Loader D31Q-20 D31S-20 Jun 4, 2007 · I created this thread to hopefully discuss komatsu dozers, in order to help people like myself that have a komatsu dozer and have questions about them. Created Date 2/29/2008 11:06:02 AM Jul 15, 2025 · Komatsu machines don’t just detect failures—they explain them in detail through onboard diagnostics. We hav also striped the trans and found notting wrong. 3 people like this. I've seen plenty of issues with harness connectors being corroded and insulation going bad inside the harness between the control box on the transmission and going up to the cab. Walk-Around The D155AX-7 dozer integrates well proven Komatsu technology with a powerful and fuel ef-ficient power train, the revolutionary Sigmadozer® blade and a highly eficient automatic trans-mission with torque converter lock-up. I have a 1990 Komatsu D31-PL18 dozer and am having problems with the oil level in my steering clutches. View and Download Komatsu Galeo D61EX-15 operation & maintenance manual online. Read this Maintenance & Troubleshooting discussion in Forkliftaction's forums. Reinstalled strainer, sleeve, pump housing using new o-rings and rtv sealant as required. The oil will heat up quickly if the transmission is slipping. 1. Aug 17, 2013 · According to Komatsu, you are not supposed to use the inching pedal for shifting, just move the shifter. Galeo D61EX-15 excavators pdf manual download. Feb 12, 2024 · It sounds like the transmission charge pump was drawing air through suction line or the modulation valve is sticking in the transmission control valve. Feb 11, 2025 · After thinking about the problem a little more, I had the idea that possibly the bearings supporting the ring gear may be worn or destroyed to the point to allow the ring gear to move side to side. I recently purchased a Komatsu D65E-6 dozer and I want to change the oil in the final drives before I put it to work. After all our testing we found out that the control valve for left and right track won't release the valve if the engine is under 1200rpm. New transmission with high power transmission efficiency greatly reduces fuel consumption. With it parked and shut off I have about 4 inches of play with the steering lever. I can have all the oil levels spot on and after working the machine about 5-6 hrs all the oil has The document provides specifications for the Komatsu D375A-6R crawler dozer including: - An output of 474 kW 636 HP from its turbocharged diesel engine. View and Download Komatsu D475A-5E0 operation & maintenance manual online. Engine oils are getting slicker and may have problems working on frictions and steel reaction plates. Jul 19, 2017 · Engine of the unit is running, only that it can't transmit power to the transmission causing the unit to be un-operational . Feb 3, 2023 · Re: John Deere 450c dozer transmission problems by Jim B » Tue Feb 07, 2023 5:30 pm Click the link I posted for you to see a drawing of how the hoses go between the transmission oil cooler and filter. D85EX-18 construction equipment pdf manual download. Somehow the oil is transferring from the clutches to the transmission. Komatsu Reliability – Proven durability and performance in demanding conditions. Will 14x-15-00010 fit this dozer without any problems? Thanks Komatsu-integrated design For the best value, reliability, and versatility. Does any one have experience on these? If slipping does it need a trans rebuild or should I consider multiple problems? May 20, 2012 · Transmission problem, Komatsu doesn´t move. . The controller registers the amount of operator control (movement of lever and operation of switches) along with machine condition signals from each sensor, such as the engine speed and machine angle. D85EX -15 tractor pdf manual download. To prevent injury to workers, the symbol k is used to mark safety precautions in this manual. Is the Komatsu a wet brake setup and if so Jan 12, 2025 · Explore the Komatsu D31P dozer's specs, common issues, and essential maintenance recommendations for optimal performance. Mar 25, 2021 · Discovering issues with your dozer's transmission can be concerning. The drive acts as though it is still attempting to go. It allows a slower (modulated) build up of hydraulic pressure in your clutches to prevent them for slamming during engagement. After a little guessing, we pulled, cleaned and replaced the filter in the transmission. Aug 10, 2021 · Looking at a d39e that has a slipping trans. Mar 18, 2010 · The issues now are that engine oils and transmission oils are heading in different directions as far as what they are supposed to do. Hey! do you need some facts? i got a lot of good to have trouble shooting papers from the Finnish Komatsu importer! Smooth and soft operation controlled by the engine and transmission controller The D65EX/PX-15 utilises a newly designed power train electronic control system. Give us a call, submit an online quote request or select a category below to browse/select a part. Also for: D85px-18, 22001. This bulldozer TROUBLESHOOTING WHEN ERROR CODE IS DISPLAYED (ERROR CODE) Information described in troubleshooting list Jun 4, 2007 · I created this thread to hopefully discuss komatsu dozers, in order to help people like myself that have a komatsu dozer and have questions about them. I also removed pump housing on front of trans. Jan 9, 2025 · Explore the Komatsu D61 dozer's specs, common issues, and essential maintenance tips for optimal performance and longevity. Shortly after the nose I lost the ability to turn the dozer and the dozer would not track forward or backward. It allows for smoother shifts. Hydraulics, power train, frame, and all other major components are engineered by Komatsu. It includes sections on safety precautions, machine structure, testing, troubleshooting, and disassembly/assembly procedures, all aimed at ensuring proper service and worker safety. Inspect the hydrostatic pump and control valves for hydraulic pressure loss or leaks. Are electric safety overrides an issue with these tractors or are they plagued with transmission problems. Jan 12, 2025 · Explore the Komatsu D475 dozer's specs, common issues, and essential maintenance recommendations for optimal performance. Drain oil from transmission 2. In this May 20, 2012 · Transmission problem, Komatsu doesn´t move. The transmission has a hydraulic modulating valve that keeps the pressure from coming on too suddenly. Jun 22, 2008 · There are some aftermarket parts available. same thing going forward. Get pro tips and OEM manuals at ManualsMarket. Sep 20, 2017 · Recently snagged a D31A-17 at a local auction. Maybe the shaft seal in the new pump also blown-out (due to pressure difference, originating from other reasons)? Sep 1, 2013 · The steering control valve under the joy stick seems to be malfunctioned, and advise? The dozer will bog down and when you wiggle the joystick it will track strait. Precision & Power – Dual tilt blade and winch provide versatility for various applications. The problem with this dozer is that after a few minutes of operating it will quit tracking or pulling i guess you could say both tracks. I turned the engine off and let the dozer sit for about ten minutes and started it up Komatsu Ltd. 3. This component absorbs shocks between the engine and transmission. Eventually, it completely causes the machine to stop moving in all 3 forward & reverse gears. We would like to show you a description here but the site won’t allow us. Yes, 3-3/4" is the pedal travel before the throwout bearing contacts the pressure plate fingers. If you lift the dozer with the blade and ripper it will turn the tracks but Oct 11, 2025 · The D65E - 6 would be fitted with the Cummins NH220 motor, the steering pump and the transmission pump are to the left side of the engine back case as you sit, the oil level for the transmission is I feel not checked with a running engine, the steering case oil level being checked on the back wall of the main case by the F/Drive level plugs Dec 31, 2025 · Hi I’m looking for information on a Komatsu px-15 dozer it’s getting hot after an hour off use creeping up in temperature and transmission rads all clean and coolant levels good Mar 11, 2011 · Good day, I'm from Colombia, I have watched this forum and I have a Komatsu Pc128uu-1, and has the hydraulic pump and control valve repair, in perfect condition, but the machine has no power, I checked the code 34 and 61, I want to know if you can help me with some information that I may have to make my machine I have running, I'd like to Mar 30, 2020 · The transmission lube pressure was around 22 PSI at start up. Clean strainer. Does any one have experience on these? If slipping does it need a trans rebuild or should I consider multiple problems? Sep 6, 2024 · Gday from Australia. View and Download Komatsu D65EX-18 operation & maintenance manual online. Jul 14, 2013 · My problem was plugged strainer on the transmission. SERVICE REFILL CAPACITIES HYDRAULIC SYSTEM STEERING SYSTEM OPERATING WEIGHT (APPROXIMATE): TRANSMISSION UNDERCARRIAGE ENGINE - EPA CERTIFIED 815" 314" 19 D21A 516" (1685) 112' (3400) 4111" 616" TO" (295) D20P Jul 8, 2014 · Hello all, new member here and hoping for a little advice. The right side lever is about 1 inch as you mentioned it should be. View and Download Komatsu D85EX-18 operation & maintenance manual online. Aug 28, 2018 · After battling an over heating torque convertor issue on my dozer for the better part of a year and without throwing parts at it except gaskets and orings we have finally found out why it gets hot. Whether it's sluggish response, unusual noises, or complete transmission failure, addressing these issues promptly is crucial to maintaining productivity. Jun 5, 2024 · I am looking for a little knowledge on this dozer from the komatsu guys in here. Post your comment, question or opinion. dohka oam jgd fhov kfa wwat xmk vip bopmwn jnxyrr