To comment on a part of the text, you can select a part of the text with your mouse - and then the comment options will appear allowing you to also share a part of the text on social network pages. With closer tolerances, the gears are less prone to characteristic whining or humming, allowing the transmission to operate with exceptional quietness. Sixth gear, however, is an overdrive ratio, which keeps the engine revolutions lower for highway cruising, reducing engine friction losses and optimizing fuel economy. Click the icon to leave your comment. It consists primarily of a four element torque converter, three planetary gear sets, five clutch packs, one mechanical one-way clutch and a hydraulic pressurization and control system.
Operational theories of the mechanical, hydraulic and electrical components are presented in a sequential and functional order to better explain their operation as part of the system. This information is extremely useful when tracing fluid circuits for learning or diagnosis purposes. This takes advantage of engine braking to prevent unwanted acceleration. The advantages of this layout enables a shorter overall vehicle length, more interior room and lower powertrain height. The control module receives input that monitors brake pedal usage, vehicle acceleration rate, throttle position, and even whether a trailer is connected to the vehicle. This 4T60E transmission manual contains service and identification; troubleshooting, transmission removal and installation information, transmission disassemble and assembly information, transmission valve body and clutch drum components, pressure charts and torque specifications. This transmission manual contains service and identification; troubleshooting, transmission removal and installation information, transmission disassemble and assembly information, transmission valve body and clutch drum components, pressure charts and torque specifications.
Although this information is available in current model year Service Manuals, its inclusion provides for a quick reference guide that is useful to the technician. Three planetary gear sets provide the six forward gear ratios and reverse. The 6T40 is also found in hybrid applications. . In case of oil overheating it is often required to change all pistons because the rubber gets hard under the influence of the temperature.
Clutch-To-Clutch Shift Operation Three planetary gearsets are used with three stationary clutches and two rotating clutches, which save space compared to freewheeling designs. Technical issues and repair guidelines These gearboxes operate with parts of different quality. The 6T30 and 6T40 are also a favorite for hybrids. It is also recommended to keep a wary eye on symptoms of the pressure loss in the line after a long-term operation as well as check and clean the valve body with solenoids. These Hydra-matic trannys quickly became a go-to for the small crossover, mid-size and compact vehicles. It was developed to have a more consistent viscosity profile, a more consistent shift performance in extreme conditions, and less degradation over time. What are you looking for? Type: Six speed front-wheel-drive, electronically controlled, automatic overdrive transaxle with an electronically controlled torque converter clutch Maximum engine power: 180 hp 134 kW Maximum engine torque 177 lb-ft 240 Nm Maximum gearbox torque: 277 lb-ft 375 Nm Gear Ratios First: 4.
Freewheeling mechanisms allow accurate timing between shifts, but also take up more space and add more components to the transmission. Because of the wide ratio spread, first gear is a very high ratio, which provides brisk acceleration from a stop. Keywords: buick, cadillac, chevrolet, oldsmobile, pontiac, hummer, saturn, geo, saab, automaitc, transmission, allison, transmission, transmissions, 1000, 2000, 125c, 200c, 4l60e, repair, rebuild, overhaul, manuals, atsg, chilton, and, general, motors, factory, thm, 125c3t40, transaxle, 4l65, 4l8e, 4t40, 4t60, 4t60e, 4t65eth, 180c, suzuki, 3l30, cd-rom, 2004r, 200c, thm, 325, 325-4l, thm, 350, turbo, turbo, hyrda-matic, 375, 400, 475, 5l40, powerglide, 4l30e, 4l60, 4l60e, 700r4, 1940, 1941, 1942, 1943, 1944, 1945, 1946, 1947, 1948, 1949, 1950, 1951, 1952, 1953, 1954, 1955, 1956, 1957, 1958, 1959, 1960, 1961, 1962, 1963, 1964, 1965, 1966, 1967, 1968, 1969, 1970, 1971, 1972, 1973, 1974, 1975, 1976, 1977, 1978, 1979, 1980, 1981, 1982, 1983, 1984, 1985, 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013. Through electronic controls, the clutch-to-clutch concept of the 6T40 delivers optimal shift timing. The mechanical power flow is followed by the hydraulic power flow which describes hydraulic fluid flow as it applies components or shifts valves in the system. The Hydra-Matic 6T40 transmission delivers on that promise. It is also all-wheel drive capable.
Gear changes from second to sixth gear ratios are accomplished with a precise clutch-to-clutch action, where the clutch is engaged in one gear at exactly the same time it is released in another. Overloading with high torques and aggressive accelerations may have a bad impact on the gearbox. Fold-out pages containing fluid flow schematics and two dimensional illustrations of major components graphically display hydraulic circuits. This design reduces the thickness of the torque converter, reducing the space it needs and keeping the overall width of the engine and transmission as narrow as possible for packaging advantages. On the top of everything else, experts recommend to install additional transmission radiator for the range 6Т. This allows a greater degree of smoothness at lower vehicle speeds.
This thorough transmission rebuild resource is the place to turn to for management of wiring schematics, disassembly and reassembly of the 3-5-reverse, electronic component operation, trouble code diagnostic, trans disassembly and check ball location. The set of pistons consists of 5 pieces. First introduced in 2007 as part of the Chevy Captiva, everyone was impressed with the electronically controlled, all wheel drive manufacturing and its clutch to clutch shifting. Adaptive Shift Controls Adaptive shift controls include automatic grade braking, which commands the transmission to remain in a lower gear if the vehicle is decelerating or coasting on a downgrade. This reduces the number of brake applies for the driver to brake during a hill descent.
In the first part of the Power Flow section, the mechanical transfer of torque from the engine through the transmission is graphically displayed on a full page while a narrative description is provided on the facing page. At the start of production for the 2012 model year Generation 2 was introduced which is currently used in all platforms using the 6T family of transmissions. The descriptive text is then supported by numerous graphic illustrations to further emphasize the operational theories presented. Vibrations lead to situations when oil leaks through worn-out bushings. It was first introduced in the 2007 Chevy Captiva followed by the Malibu in 2008 and quickly spread to the compact, mid-size, small crossover vehicle line, as shown in Figure 1. In every situation possible, text describes component operation during the apply and release cycle as well as situations where it has no effect at all.