Many thanks to John C for clarifying that I was mistaken about the machine having a Detroit engine. It appears to be a sizeable piece of equipment!
After replacing the injection pump with a used one in good condition, performing necessary maintenance tasks, and starting the engine, everything seemed to be running smoothly. However, a concerning issue arose: the coolant was mysteriously disappearing and mixing with the oil in the crankcase, causing the oil to turn creamy.
To troubleshoot this problem, I suspected a possible issue with the cylinder heads and gaskets. The cost of a cylinder head gasket kit in Europe is high, making this potential repair a significant investment.
Before diving into the repair work, I conducted a test by pressurizing the coolant system and locating a suspicious air leak near the left block of cylinders. I contemplated using gasoline to check for leaks around the bores, hoping that the issue was simply a faulty cylinder head gasket.
During my investigation, I stumbled upon another engine, the DVT573-B, which had notable differences in turbocharger size and injection pump type compared to mine. These differences sparked my curiosity, and I look forward to sharing more details and photos of this loader's engine operation in the near future. Stay tuned for updates!
Hello Georges, I was wondering if this engine features easily removable cylinder sleeves. The issue could possibly be related to the seals surrounding the sleeves, or it could be due to a cracked sleeve.
Hello Jakesdad, the sleeves on this engine are removable and have 3 O-Ring gaskets at the base. I have already removed the engine from the loader and disassembled it (crankcase, rods, pistons). Tomorrow, I will need to create a hydraulic mount to remove the sleeves. The sleeves and bores are in good condition with only 8000 hours of use and no cracks. However, there is an issue with water leaking when testing the block. I have taken measures to seal the water circuit with homemade metal plates and rivets, but there is still leakage around the base of the sleeve in the oil compartment. There is also a lot of rust at the base of the sleeves, which will need to be cleaned and treated with a high-quality primer from DuPont De Nemours to prevent further rust damage. This project has already taken over 50 hours of work, in addition to my regular job of repairing golf course mowers with Kubota engines, which are easier to work on than V8 turbo IH engines.
At one point, I encountered an 855 Cummins engine with a hidden cracked sleeve that was not visible to the naked eye. It is crucial to carefully inspect engines for any potential issues, such as cracked sleeves, to ensure optimal performance and longevity.
It is crucial to handle sleeves with care to prevent water from entering the cylinder during firing, as this can result in white smoke coming out of the exhaust. In a recent inspection, we found that the 3 base gaskets were severely damaged by rust due to the use of water instead of coolant. To easily identify any leaks, we recommend using methylene blue powder mixed with oil. Heat the sleeves to 200°C and look for any blue traces outside. You can also lightly spray gasoline around the sleeves to observe any leaking methylene blue. This product was widely utilized by Renault trucks in the 1980s to test engine blocks for leaks when they were first manufactured.
It is advisable to inspect the exterior of the sleeves for any signs of damage. If the sleeves show signs of pitting from exposure to water, it is recommended to consider replacing them. Faulty o-rings can also cause the sleeves to be at risk of leaking. Regularly checking and maintaining sleeves can prevent potential issues and ensure optimal performance.
Hello, Jakesdad. I need to replace all the sleeves and pistons in my engine due to water seeping through the pitting holes in the sleeves.
My H90E features a Detroit 8V71 engine that is similar in size and width. Although the engine swap was manageable, I find it lacks torque. Swapping out the starter has been a challenging task that I have completed multiple times without needing to lift the engine. While I now use this machine exclusively on the farm, in its younger days, it had superior pushing power compared to a CAT 966D.
A friend of mine is selling a fully rebuilt DVT 573A that he refurbished for a customer who could not afford to pay for it. The rebuild includes new pistons, sleeves, bearings, seals, and a reground crankshaft. It originally came from a Hough 90C or International 270 scraper. He has invested over $7,000 in it and is looking to recoup some of the costs. If you're interested, please email me and I will connect you with him at *[email protected]*.
Check out attachment 012 - Copie.JPG! Hello everyone, after a complete overhaul and successful operation (having cleared out over 800 cubic meters of poor soil last summer), the H90 loader is showing its age. Despite being a powerful machine, it has some hydraulic hose leaks when operating at high temperatures, requiring me to top up with approximately 5 gallons (20 liters) of hydraulic oil per day. This winter, there was interest in purchasing the loader at a good price, so I decided to sell it. Although it was a difficult decision, it was a relief due to the high level of maintenance required.
Now, I am left with a smaller "Zettelmeyer 602 B" weighing 6 tons, which is not suitable for heavy-duty tasks. As a fan of IHC and Dresser products, I am planning to check out a 545 loader next week with a 250hp Mercedes engine and a 4.5m3 bucket. Despite being from 1989 and having 11000 hours of usage, it reportedly runs well and has good hydraulics, although the paint and tires may need some attention.
Additionally, I have come across a Michigan L125C from 1986 in poor condition externally and lacking brakes. I am cautious about potential issues with the torque converter and pumps, as these are common problems with this model. There is another L125C nearby, but it is not operational. This presents a challenge when it comes to transporting heavy loads.
Check out the images of a engine rebuild project in progress and the final result at the workplace. Photos show the detailed steps of the rebuilding process and the completed engine in all its glory. Explore the before-and-after of this automotive restoration project.