Note the position of the wear indicating tab on the clutch. The force required to clutch a vehicle transmission using a foot pedal is reduced by providing a compressed air actuated boost device attached to the clutch linkage. The importance of free pedal travel sometimes referred to as pedal lash should be brought to the drivers attention as well as the mechanic. First, a signal is sent via a sensor when a shifter mechanism is activated to engage the clutch. Basically, an air cylinder is placed in the linkage to assist manual or even hydraulic clutches. Pedal free travel for the cableoperated air assist clutch release system should be 28. The force required to clutch a vehicle transmission using a foot pedal is. Wet clutches are designed to provide a long, servicefree life. Tru count air clutch park farms computer the low cost tru count air clutch is placed on each row and is controlled pneumatically from your tractor cab through a gps or manual controller. Nearly all clutch systems use some type of pressure springs which assist in engaging and disengaging the clutch.
Pedal free travel for the cableoperated airassist clutch release system should be 28. Tru count air clutch and system components maintenance. The mps air clutch allows you to control your clutch lever with a push button. When you release the button the clutch will release. Air engaged, spring released industrial friction clutches.
You could use the hanging air brake pedal from bendix like is some coaches and fire appuratus ive seen, kinda would look like a convenional clutch. To all who have done the air assist clutch conversion sibernut, any others. Air brake systems stocks all air brake components from the compressor to the slack adjuster or air disc brake calliper including a full range of service exchange air compressors. If the clutch itself is in good condition and the free travel etc is correct, the clutch brake should work if it is not worn out. New design features were introduced, such as improvement in driver environment and usability e. If using a tool to assist with movement of the cam to the new. Specify the pneumatic clutch booster from cablecraft australia pl. Clutch maintenance, like brake maintenance, helps your customer receive the maximum service life from his clutch components. The power or torque control of the air pneumatic clutch is also typically more accurate than a mechanical clutch.
First bleed the air from the operating cylinder air bleed valve and then from the bleed connector air bleed valve. Locate four 4 38 x 16 x 1 14 unc, hex head machine screws. Bleed cluch on fd hino after changing master cylinder. View and download honda gl1800 service manual online. When you depress the launch button the air cylinder locks the lever in place allowing you to let go of the lever and grip the handlebars. Servoassisted clutches include an additional component to facilitate operation.
Torque is transmitted by applying air pressure to the clutch. Slipper clutch is a feature which was once available only inexpensive motorcycles. When the clutch pedal is in a first position in the free travel the valve is open and upon movement of the clutch pedal from the first position in the free travel the valve is closed. Air assisted vehicle clutch linkage international truck intellectual. For compressed air systems the pressure assist is operator selected.
The torque value is proportional to the air pressure applied. D release handlebar clutch lever and check for slight 116 free play on engine clutch arm. The integrity of the lines and the fittings of the machinery should be carefully maintained so as to avoid leaks and loss of air pressure. Helps to save fuel through faster clutch actuation and less air consumption. You cant control how he uses his clutch or his brakes, but you can make certain the clutch system is properly adjusted and working as the manufacturer intended. Activation of the boost device is controlled by switches which are sensitive to. Tgas clutch cables are made from the highest quality materials and designed. When the yoke pulls back on the throwout bearing, which has a flat face on it, it pinches the clutch brake disc between itself and the flat. Although i have an autoshift, my wife had a hard time with it. Air assisted vehicle clutch linkage free patents online.
When air pressure is absent, springs provide positive separation of drive discs so that torque is no longer transmitted. With a hydraulic linkage system, because the free pedal is totally eliminated, he or she. Refer to arvinmeritor clutches maintenance manual mm25a if further direction is required. Truck technology clutch control cpca pca wabco emea. Solo clutch clutch removal procedure if clutch is to be reinstalled and transmission is still in vehicle caution. The servomotor supports the driver when starting the car and shifting gears by reducing the effort that must be applied to the pedal. When replacing the cylinder, use caution as cross threading can occur. Using the electronic clutch system ecs, the driver can drive off without pressing the clutch pedal even with a manual transmission. Avoid using compressed air to blow clutch dust from the parts. Chapter 10 automotive clutches, transmissions, and transaxles.
Both vehicles had up to 70% of parts in common across the range. The degree of boost is selectable using a hand controlled air pressure regulator. Made from the highest quality materials, by toptier engineers in the usa, these products are versatile, durable and available for various uses across melbourne. Depending on the year this truck should have an air assisted slave cylinder on the side of the gearbox. Volvo air assist clutch heavy haulers rv resource guide. Cooled egr with exhaust diesel oxidation catalyst doc. The clutch in my 2000 volvo 610 has been extremely hard since i have had it. It was ok if some one owned the truck and knew how to adjust. From the simple airtube disc clutch design that allows for greater. Clutch brake adjustment is really a biproduct of clutch adjustment. Do not use rigid pipe or tubing for this connection. Clutching arrangements for motor vehicle standard transmissions. Hydraulic clutch linkages are becoming more prevalent in the north american trucking industry.
A manualadjust clutch that isnt readjusted as required can suffer a. If the tab is near the replace position, the clutch should be replaced. What all systems have in common is that they need to be free from trapped air in order to function flawlessly. Fail safe increases machine life and dependability. This includes air assisted and hydraulic clutch actuation systems, pneumatic and electronic air suspension control systems and various levels of product delivery interlock systems. We repair and perform maintenance on all of our parts, quickly returning serviced industrial clutches to you. The air assist servo has a fairly strong full extension preload tension, so i think that once installed it will push the fork onto the thr. E readjust clutch adjust nut as required to get required 16 clutch arm free play. Air assist clutch tgas clutch cables are designed to be easily installed and functional. Heres why your clutch selection is more important than ever when running trucks with hydraulic linkages. How do air clutches work twin disc clutch oil states. An air clutch uses compressed air or other gases to regulate the contact between two power shafts. Of late, however, the technology has started making its way into lower capacity, affordable motorcycles as well. This design makes the clutch easy to use and makes the engagement action light and progressive when driving in.
The line accommodates a range of application requirements, with torque capacities ranging from 850 up to 78,000 inlbs. In recent years, heavyduty truck manufacturers have begun introducing vehicles with. When the clutch pedal is depressed, the clutch rod moves downward pushing the plunger into the cylinder. Clutch manual transmission model air assisted hydraulic control. I have heard they greatly reduce the force needed by the driver to depress the clutch, with less movement also. Honda gl1800 service manual pdf download manualslib. Did you maintain the 18 fork to bearing pad free pedal dimension clearance. It has been to a volvo dealer, and the mechanic said it was the hardest he had ever felt. Loosen bleeder on slave cylinder at clutch,,let gravity bleed until all air is gone,,you may have yo push and hold clutch pedal down one time and block it,,let it bleed with cap off do not let fluid get low,,after all air is gone pump clutch pedal and you should start feeling pressure. In fact, a good understanding of air over hydraulics is important not only because of the necessary maintenance and upkeep, ut also in case youre thinking of a replacement. Carlson industrial designs and manufactures a comprehensive line of clutches including the tsc throughshaft mounted, heavyduty industrial air, uc totally enclosed endshaft mounted air, positive engagement clutches. The air operated clutch assist system reduces clutch pedal effort approximately 20%. Clutch driven disc features latestinnovation friction material for optimal efficiency less noise generated at idle speed or when driving with iveco clutches, increase the mechanical parts lifetime, maintain your driving comfort and remain serene longer.
Place one drop of oil or magna lube in the air cylinder. Years ago on the old b models and early r with the air duplex it had a air assist and it would do same thing very offten. The kenworth t680, though similar to its t660 and t700 brothers, forges new. While air over hydraulic brakes might not be the most common technology anymore, they are still relevant and thus important to understand. Keep painted surface of body and other parts free of clutch fluid. The cd38bo is a dragtype clutch with dual friction discs that are 380 mm in diameter. Air assist clutch pneumatic clutch booster tga cables. All of the springset air released model lkb brakes. Pneumatic clutch booster the future of engineering design in heavy duty vehicles is clear. Delete the air doins and get back to the real clutch cable. Master cylinder w4000840 the clutch pedal activates the master cylinder. For fast engagement and disengagement, connect air controls as close to the dpc clutch as possible. In this article, we will go through what an air over hydraulic brake system is.
Wabcos pneumatic clutch actuators for automated manual transmissions releases the driver from constant clutch actuation and helps. Heres a writeup on the new kenworth t680 with an air assist clutch. Bleeding the hydraulic clutch actuation system sachs. Application forms such as shown in section xv to assist. Do not allow dirt and debris to enter the air clutch after the air cylinder is removed. Air assist clutch conversion question hdt escapees. F tighten clutch adjust nut on clutch plate clockwise until just snug. The solution the clutch pedal pressure amplifier from fte automotive can be positioned anywhere between the clutch master cylinder. Verify clutch pedal free play after establishing the correct clutch brake squeeze, veri fy clutch pedal free play. Tru count air clutch youtube oct 17, 2010 eliminate seed overlap in your headlands and point rows with the tru count air clutches.
Controls will continue to improve in ergonomics, maintainability and reliability. Funny thing is they blame the clutch brake when the real problem is the clutch adjustment. Velvet touch ceramic facing, an aftermarket industry standard. The relief valve state is controlled by the position of the clutch pedal in a free travel.
Mack truck sb305, airoperated clutch assist adjustment. This manual is to be used strictly for educational purposes promoting these oe. A dragtype clutch is disengaged when the release bearing pulls the centre of the diaphragm spring outward. How is a slipper clutch different from a regular clutch, and how exactly does it work. The booster cylinder receives controlled air from the load sensor regulator.
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