Zf automatic transmissions service manual fore word this manual provides information relevant to the servicing of zf automatic transmission units 4 hp 22 and 4 hp 24 e. For the past few decades in automotive history, the rapid progress in the technology of automatic gearboxes has effectively nullified the necessity of manual operation. Automatic transmissions use compound planetary gear sets are controlled by. Off late, marutisuzuki has created a ton of hype by launching their celerio hatchback with the common mans automatic gearbox, the automated manual transmission or amt. How automatic transmission works the art of manliness. Electronic control system the electronic control system, which controls the transmission and transfer shift timing and the operation of. An automatic transmission, also called auto, selfshifting transmission, nspeed automatic where n represents its number of forward gear ratios, or at, is a type of motor vehicle transmission. Electronic control transmission ect the electronic control transmission is an automatic transmission which uses modern. The torque converter provides a means of power transfer from the engine to the input shaft of the transmission. This is based on a standard 5speed gearbox with servocontrolled clutch. At1 automatic transmission page description at2 operation at4 troubleshooting at9 general notes at9 general troubleshooting at10 preliminary.
The inner rotor has nine teeth and the outer rotor has ten teeth. The 48re is equipped with a lockup clutch in the torque con. Also, while the lockup system is in operation, the ecm will temporarily turn it off during upshift or downshift in order to decrease shifting shock. Way overrunning clutches used to connect rotating components together in one direction and freewheel in the other multiplate brakes used to stop or hold. The automatic transmission is same work as the manual transmission except it is control by the brake arrangement operated hydraulically. Check your surroundings to make sure there arent any people, cars, or animals nearby, then slowly release the brake pedal to start moving. The operation is automatic, but it also has a manual mode where the driver changes gear manually. The transmission fluid may become extremely hot when the vehicle is under and extreme load, as when driving on sand. Zf 5hp30 automatic transmission spare parts catalog table. Hydramatic 4t80e automatic transmission repair manual. Automatic transmission has not better fuel economy.
Clutch fully depressed the clutch is fully disengaged when the pedal is fully depressed. Torque converter planetary gear unit hydraulic control unit for a full understanding of the operation of the automatic transmission, it is important to understand the basic role of these components. T fluid temperature warning system the ect ecu detects the transmission fluid temperature by means of a fluid temperature sensor fitted to the union. Control valve the hydraulic control system of the automatic transmission consists of an oil pump, valve bodies containing valves, clutches, fluid passages and pipes. Transmission fundamentals standardautomatic transmission comparison in todays modern vehicles, the automatic transmission has become a vital part of the powertrain.
Allison 2000 series 1 no part of any atsg publication may be reproduced, stored in any retrieval system or transmitted in any form or by any means, including but not limited to. The ninegear transmission also improves fuel economy dramatically, with a reduction of fuel consumption around 6. Transmission the hydraulic control system is composed of the oil pump, the valve body, the. It acts like an automatic clutch to engage engine torque to the transmission and also allows. For a full understanding of the operation of the automatic transmission, it is important to understand the basic role of these components. In a small chapter, he discusses how a semiautomatic transmission provides an effortless operation, the transmission in which the clutch pedal is dispensed with and still the choice of gear selecting is left to the driver. Page 21 at8 automatic transmission operation hydraulic control system the hydraulic control system is composed of the.
The working of an automatic transmission is best understood with help of a 2d animation. Automatic transmissions if you have an automatic or automatic manual transmission, operation of the jacobs engine brake functions essentially in the same manner as vehicles with manual transmissions. Automatic transmission operation gm 4l60e automatic transmission. The further the gas pedal is pressed, the more pressure is put on the throttle valve. Automatic transmission basics automatic transmission diagnosis course 273 the torque converter provides an automatic means of coupling engine torque to the input shaft of the transmission. The ratios for the gear stages are achieved by planetary gear sets. If transmission flush additive is to be used, it should be added and circulated in the transmission prior to exchange or drain pan functions being performed. They combine a fluid torque converter with a planetary gearset and control the shifting of the planetary gear with an automatic hydraulic control system. The operation of the system is controlled by driver s manual inputs and electrical inputs from the tcm. A semiautomatic transmission also known as an automated manual, clutchless manual, automanual, semimanual, trigger shift, flappypaddle or paddleshift gearbox is an automobile. A possible tuning is that if the accelerator pedal is depressed sharply, the engine rpm will rise considerably more than in relation to the speed of the vehicle. Automatic transmission 48re description the 48re fig.
Automatic transmission fundamentals fundamentals transmission band operation z the servo is a metal plunger that operates in servo a machined cylinder in the at case z rubber seals fit around the outside of the piston to prevent internal oil leakage z a rod or pin attached to the servo piston servo attaches to one end of the band z. On an automatic transmission, gear ratios increase and decrease automatically. Jul 30, 2016 the working of an automatic transmission is best understood with help of a 2d animation. Chapter 10 automotive clutches, transmissions, and transaxles. May 09, 2018 on a manual transmission, you have to move your gear shift to change the gear ratios. He goes a bit farther and summarizes the most recent developments in.
Automatic transmission 45rfe545rfe description the 45rfe545rfe automatic transmissions is a sophisticated, multirange, electronically controlled. The 9gtronic automatic transmission offers smoother shifting for a more comfortable drive. All the transmission functions and control components for this automatic transmission are combined in one assembly module. Dis state of the art and incorporatesthe latest technology and techniques to quickly perform all required periodic maintenance services for automatic transmissions. If you have ever driven a car with an automatic transmission, then you know that there are two big differences between an automatic transmission and a manual transmission. Construction the pump consists of a parachoid rotor pair, a housing and a cover. The ninegear transmission also improves fuel economy dramatically, with a. Zf 5hp30 automatic transmission spare parts catalog 5hp30 transmission overview north american applications make model model year bmw a5s 560z make model style. This type of transmission does not need a clutch pedal and shifts through the forward gears without control from the. Function z the pump draws automatic transmission fluid atf from the oil pan through the oil strainer located under the control valve assembly. Automatic transmission nag1 service information description the nag1 automatic transmission is an electronically controlled 5speed transmission with a lockup. These automatic transmissions are developed for more than 300 leading world manufacturers of equipment and are used for the following sectors of the market buses, rescuers and utilities, builders and dispensers of products.
Zf 5hp30 automatic transmission spare parts catalog. The hydramatie 4t80e technicians guide is another powertrain publication from the technicians guide series of books. Automatic transmission operation most automatic transmissions are basically the same. Ford ax4n atsg automatic transmission service group pdf free online. In a small chapter, he discusses how a semiautomatic transmission provides an effortless operation, the transmission in which the clutch. Dis state of the art and incorporatesthe latest technology and techniques to quickly perform all required periodic. Automatic transmissions provide for holding a member through hydraulic servos and spring pressure. Allison transmission is the worlds largest manufacturer of automatic transmissions for commercial vehicles and offroad applications. If transmission flush additive is to be used, it should be added and circulated in the transmission. The purpose of this publication, as is the case with other technicians guides, is to provide complete information on the theoretical operating characteristics of this transmission.
Chapter 10 automotive clutches, transmissions, and. Automatic transmission fundamentals fundamentals transmission band operation z the servo is a metal plunger that operates in servo a machined cylinder in the at case z rubber seals fit. Function of ecm control of shift timing the ecm has programmed into its memory the optimum shift pattern for each shift lever. Automatic transmission description at3 outline of ect the conventional automatic transmission operates by mechanically converting vehicle speed into governor pressure, and throttle opening into throttle pressure, and using these hydraulic pressures to control the operation. The hydraulic control system is composed of the oil pump, the valve body, the solenoid valve, the accumu lators, the clutches and brakes, as well as the fluid passages which connect all of these components. Allison 2000 series 1 no part of any atsg publication may be reproduced, stored in any retrieval system or transmitted in any form or by any means, including but not limited to electronic, mechanical, photocopying, recording or otherwise, without written permission of automatic transmission service group. Automatic transmission 45rfe545rfe description the 45rfe545rfe automatic transmissions is a. Ax4n automatic transaxle is a four speed unit with total electronic controls and is designed for operation in a transverse powertrain for front wheel drive vehicles. Normal operation the operation of the transmission, during driving, has no comparison with that of a conventional automatic transmission. Stator operation the stator provides torque multiplication when the engine is running and the car is stopped, the stator will lock on the one way clutch the one way clutch is splined to the transmission oil pump cover or stator shaft that does not rotate this provides maximum torque multiplication. On a manual transmission, you have to move your gear shift to change the gear ratios. Objectives when you have completed this chapter, you will be able to do the following. It is extremely easy to operate, environmentally safe, and designed for the highest efficiency.
Allison transmission shift selector operation manual 24 pages. Sep 14, 2017 the 9gtronic automatic transmission offers smoother shifting for a more comfortable drive. This is because automatic transmission has not better mechanical and gear train efficiency as compare to those of automatic. Multiple disc clutches used to connect rotating components together one. Ax4n automatic transaxle is a four speed unit with total electronic controls and is designed for operation. The ecu then controls the operation of the clutches and. Never put anything but automatic transmission fluid in the new tank of the atf4. Manual transmission offers the driver more control of the vehicle. There will be no torque being transferred from the engine to the transmission and wheels. Automatic transmissions if you have an automatic or automatic manual transmission, operation of the jacobs engine brake functions essentially in the same manner as vehicles with manual. Understand the operating principles and identify the components and the maintenance for a clutch, a manual transmission, an automatic transmission, and a transaxle. In this type of transmission system, the driver has to manually select and engage the gear ratios. The transmission itself, except for the valve body and speed sensor, is virtually the same as a full hydraulically controlled.
Always use the proper type of automatic transmission fluid for the vehicle being serviced. At1 automatic transmission page description at2 operation at4 troubleshooting at9 general notes at9 general troubleshooting at10 preliminary check at12 mechanical system tests at14 automatic shift schedule at26 neutral start switch at28 od solenoid w cruise control system at28 at fluid temperature warning system at29. The operation of an automatic transmission is explained here with help of animation. Jan 09, 2016 the operation of an automatic transmission is explained here with help of animation. Automatic transmission does not offer the driver more control of the vehicle as. And this is able to happen thanks to the ingenious design of a planetary gear. Then, switch the gear lever from park to drive without. Then, switch the gear lever from park to drive without letting up on the brake. Automatic transmission basics automatic transmission diagnosis course 273 the torque converter provides an automatic means of coupling engine torque to the input shaft of the.
Automatic transmission operation symtech corporation. Ford ax4n atsg automatic transmission service group pdf. Electronic control transmission ect the electronic control transmission is an automatic transmission which uses modern electronic control technologies to control the transmission. The 9gtronic automatic transmission from mercedesbenz is the worlds first automatic transmission to feature a hydrodynamic. Hydramatic 4t80e automatic transmission repair manual pdf. The purpose of this publication, as is the case with other. The automatic transmission is composed of three major components. In the automatic transmission the engine shaft is connected to the clutch and the further connected to the turbine of the torque converter. Stator operation the stator provides torque multiplication when the engine is running and the car is stopped, the stator will lock on the one way clutch the one way clutch is splined to the.
This is because automatic transmission has not better mechanical and gear train efficiency as compare to those of automatic transmission. Ford ax4n atsg automatic transmission service group. C1, c2 and c3 have all been offered with a semiautomatic transmission named sensodrive. An automatic transmission, also called auto, selfshifting transmission, nspeed automatic where n represents its number of forward gear ratios, or at, is a type of motor vehicle transmission that automatically changes the gear ratio as the vehicle moves, meaning that the driver does not have to shift the gears manually. Transmissions the 6l50 transmission is a hydramatic sixspeed rear and allwheel drive automatic transmission produced by gm. This video demonstrates working of allison 6 speed transmission in a step by step logical manner. Jan 21, 2020 to drive a car with an automatic transmission, first start the car with your right foot pushed down on the brake pedal. The engine brake is activated when you move your foot off the throttle and deactivated when you apply pressure to the throttle. Sep 11, 2015 the automatic transmission is same work as the manual transmission except it is control by the brake arrangement operated hydraulically. Some cars have a simple cable linkage connected to a throttle valve in the transmission. Allison transmission model, which has 6 speed and reverse is used for this purpose. Automatic transmission operation most automatic transmissions are basically the. To shift properly, the automatic transmission has to know how hard the engine is working.