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WEBER Grinding Machines Grinding, rounding, deburring and descaling of lasered, punched and nibbled parts 1955 1913 WEBER works according to a 100-year-old tradition and experience in building grinding machines For over 55 years, WEBER has been producing widebelt grinding machines 2013 These days, WEBER sets new standards in the field of grinding technology with its 6 model ranges 3 METAL OPTIMISING WITH GREAT CARE. Stability. Flexibility. Functionality. Regardless of the requirements designers and engineers have for the realisation of their projects – metal is the material that can meet these special requirements. There is no doubt: Metal is fascinating! At the end of machining procedures which are as precise as they are efficient, more and more new application possibilities are revealed. For over 100 years, we have been developing and producing grinding technology to meet the highest demands. Of course, this includes technology for gentle thin sheet machining. In this way, our innovations contribute to the perfect utilisation of the potential metal has as a raw material. Our products fascinate people all over the world.
Pedestal Grinder A Pedestal Grinder is primarily used in Design & Technology for heavy general purpose grinding operations. Grinding is the process of removing material by the cutting action of the countless hard and sharp abrasive particles of a revolving grinding wheel as they come in contact with the surface to be ground. The grinding wheels are held between two flanged disks. Usually a roughing or coarse-grained wheel is mounted on one end of the spindle and a fine wheel on the other. A tool rest is provided for each wheel so that the work piece may be held or steadied while being ground. The operator is protected against flying abrasive particles and ground material by the wheel guards and spark arrestors, which are integral parts of a machine. Safety glass shields are also provided for additional protection. WARNING The main types of injury are caused by: • Entanglement of hair or clothing in rotating machinery parts. • Fingers being caught between grinder wheel and work rest. • Sparks or worn abrasive may be thrown by the grinding action. • Body parts coming into contact with abrasive wheel. • Ejected material or disintegrated abrasive wheel. • Hot metal. Acknowledgment http://www.brobo.com.au
PERFOMANCE BOOST The Freescale* MPXV4115V pressure sensor is the ideal part for automotive vacuum sensing needs such as those found in the brake booster application. Prepared by Marc Osajda Automotive Sensor Marketing Motorola – Toulouse, France Advanced braking systems are becoming increasingly common in today’s automobiles. Higher level systems and technology now being used in “brake assist systems” (BAS) in several European cars, have made it possible for more efficient and intelligent braking systems. A key functional application block found in these braking systems that has advanced with this technology surge, is the vacuum brake booster function. Here are a few driving factors behind the need and use of the brake booster, which helps ensure a safer braking system. Independent Systems: In current gasoline engine cars, the engine’s intake manifold generates the vacuum for the brake booster. This system works fine with one exception. The amount of vacuum in the brake booster is unknown by the braking system. Thus the amount of amplification is also unknown. If heavy braking is needed, there is no possibility for the brake system to interact with the intake manifold if additional amplification is required. The manufacturer’s interest for having the vacuum generated by an auxiliary vacuum pump is that the brake system can manage the amount of vacuum as required, on demand. This in turns gives it the ability to perform amplification on its own, giving it complete independent from the engine’s operating condition. The auxiliary pump is also able to provide higher amounts of vacuum whenever necessary. In situations calling for heavy braking, the pressure will naturally decrease in the brake booster, also causing a decrease in the amplification during braking. With an external pump it is possible to maintain, or even increase the amplification during a heavy braking phase. Smart Safety: Wheel blocking due to high-braking force is controlled by the Anti-Lock Brake System (ABS). However, it has been observed that in many cases, drivers do not...
Vacuum Brake Booster Testing and Diagnosis Vacuum Brake Booster Testing and Diagnosis This procedure will require the use of a hand operated vacuum pump with a vacuum gauge. If you do not own one it can often be rented or borrowed from most “big box” parts stores. (Note: 18”HG is the minimum engine vacuum at idle in gear to effectively operate a vacuum booster 1) Remove vacuum hose from check valve on booster. Place hose from vacuum pump onto check valve and draw booster to 20” of vacuum. 2) Let booster sit with vacuum applied for 5 minutes. If vacuum does not stay steady at 20” it is faulty and needs to be replaced. If vacuum does hold steady at 20” proceed to step 3. 3) With 20” of vacuum in booster depress brake pedal once and release it. The booster should transfer some but not the entire vacuum in reserve. Depending on how hard the pedal is depressed it is normal to see 5-10” of vacuum depleted from reserve. The most important thing is to ensure the booster does transfer vacuum but does NOT transfer the entire vacuum in its reserve. If vacuum remains at 20” OR goes to zero the booster is bad and will need to be replaced. If vacuum transfer is within the above parameter proceed to step 4. 4) Once again draw booster down to 20” of vacuum. Go inside car and depress brake pedal and hold down for 30 seconds. You should see the gauge drop slightly and then hold steady. Vacuum should stay steady as long as you are holding the pedal down. If vacuum drops while pedal is being held down the booster is faulty and will need to be replaced.
No. BPI 10-06 Subject: Temporary reduction in power brake assist in extreme cold weather Vehicles Involved: Models: 2009 BUICK ENCLAVE 2009 CHEVROLET TRAVERSE 2009 GMC ACADIA 2009 SATURN OUTLOOK From 9J100008 From 9S100002 From 9J100016 From 9J100003 to to to to 9J190898 9S143268 9J190899 9J190888 Condition: If the brake check valves are NOT installed correctly, an increased amount of brake pedal effort will be required to obtain brake function, and the brake assist system will NOT perform as designed. Repair: Replace the first design brake booster vacuum hose check valve (1) with a second design brake booster vacuum hose check valve (2). An arrow on the second design check valve indicates the vacuum draw direction (3). 1. Remove the fuel injector sight shield (engine cover) from the engine. 4400 Prime Parkway McHenry, IL 60050 (815) 363-9000 Determine where the two brake booster vacuum hose check valves are located. Refer to callouts 1 and 2 in the illustration 2. Release the quick connect (4) from the power brake booster auxiliary pump (3). 3. Remove the protective wrap (5) from the brake booster vacuum hose to locate check valve # (1). 4400 Prime Parkway McHenry, IL 60050 (815) 363-9000 4. Remove the check valve (1) from the brake booster vacuum hose that routes to the power brake booster auxiliary pump (3). 5. Remove the check valve (2) from the brake booster hose that routes to the intake manifold vacuum port (6). Note If necessary, a small amount of denatured alcohol can be used as an assembly aid for installing the vacuum hose to the manifold vacuum port. Do not use soap. 6. Install a new check valve (1) to the brake booster hose that routes to the power brake booster auxiliary pump (3). Ensure the arrow on the check valve (1) ...
(2) Four brake booster installation nuts A: REMOVAL 1) Remove or disconnect the following parts in the engine compartment. (1) Disconnect the connector of brake fluid level gauge. (2) Remove the brake pipe from the master cylinder. (3) Remove the master cylinder installation nut. (1) CAUTION: In order to prevent the contact of the bracket and check valve, be sure to loosen the master cylinder mounting nut while holding the bracket with hand. Otherwise it may deform the bracket. (1) Check valve (2) Bracket (4) Disconnect the vacuum hose from brake booster. 2) Remove the following parts from the pedal bracket. (1) Snap pin and clevis pin Nut Clevis pin Snap pin Operating rod Brake pedal 3) Remove the brake booster while avoiding the brake pipe. NOTE: • Make sure that the booster shell and vacuum pipe are not subject to strong impacts. • Be careful not to drop the brake booster. If the booster is dropped, replace it. • Use special care when handling the operating rod. If excessive force is applied to the operating rod, the angle may change by r3°, and it may result in damage to power piston cylinder. • Be careful when placing the brake booster on floor. • Do not change the push rod length. CAUTION: • Do not disassemble the brake booster.
Safety Recall No. 983 Brake Booster Vacuum Hose Models 2000-2001 (PL) Dodge and Plymouth Neon NOTE: This recall applies only to the above vehicles equipped with a: Ø 2.0L engine (“C” in the 8th VIN Position) built through March 21, 2001 (MDH 0321XX) or a Ø 2.0L High Output engine (“F” in the 8th VIN Position) built through April 11, 2001 (MDH 0411XX). IMPORTANT: Some of the involved vehicles may be in dealer new vehicle inventory. Federal law requires you to stop sale and complete this recall service on these vehicles before retail delivery. Dealers should also consider this requirement to apply to used vehicle inventory and should perform this recall on vehicles in for service. Involved vehicles can be determined by using the DIAL VIP System. Subject The brake booster vacuum hose on about 350,000 of the above vehicles may swell due to oil contamination and become disconnected. A disconnected hose could cause a loss of power brake assist and an increase in engine idle speed. This can increase stopping distance and cause an accident without warning. Repair The brake booster vacuum hose must be replaced. © Copyright 2001, DaimlerChrysler Corporation, All Rights Reserved Safety Recall No. 983 -- Brake Booster Vacuum Hose Page 2 Parts Information Each dealer to whom vehicles in the recall were invoiced (or the current dealer at the same street address) will receive enough Brake Booster Vacuum Hoses to service about 10% of those vehicles. Dealers should determine which brake booster vacuum hose is required for each vehicle at the time appointments are scheduled to assure that the correct part is available when the customer arrives. The vacuum hose for the vehicle to be serviced may be determined by: Ø Using the part code in the third column of the VIN list along with the following table (involved dealers); Ø Using the VIN and part number list electronically transmitted to DIAL System Function 53 (involved dealers); or...
Introduction Everybody knows that when you press your foot on the brake pedal the vehicle is supposed to stop. But how does the pressure from your foot get to the wheels with enough force to stop a heavy vehicle? In the following sections, we will study the systems and components required to allow brakes to work effectively. Course Objectives Upon completion of this course, technicians should understand and be able to apply their knowledge of: • • • • • • • • • • • • Brake functions and components Split hydraulic systems Master cylinder operations Balance control systems Power brake booster systems Disc brake operation Micrometer reading Drum brake operation Brake fluids Brake bleeding operations Brake lines and hoses Basic diagnosis Using the Job Sheets As you proceed through the online module, on some pages you will find links that will open a window with a printable procedure or job sheet containing hands-on lab activities based on the NATEF standards related to the content you are studying. When you come upon a procedure or job sheet link, click on it and print the job sheet for completion in the shop. See your instructor for guidance in completing the job sheets. Some jobs sheets will require supplemental materials such as a vehicle service manual, equipment manual, or other references. Brake System Functions Automotive brakes are designed to slow and stop a vehicle by transforming kinetic (motion) energy into heat energy. As the brake linings contact the drums/rotors they create friction which produces the heat energy. The intensity of the heat is proportional to the vehicle speed, the weight of the vehicle, and the quickness of the stop. Faster speeds, heavier vehicles, and quicker stops equal more heat. Automotive brake systems can be broken down into several different sub-systems (fig. 1): • Apply system • Boost system • Hydraulic system • Wheel brakes • Balance control system • Warning system (fig. 1) Base Brake Systems .
REVISED SEPTEMBER, 2011 This book is designed for instructional use only for authorized Nissan North America, Inc. and Nissan dealer personnel. For additional information contact: Nissan North America, Inc. Technical Training P.O. Box 685001 Franklin, TN 37068 © 2011 Nissan North America, Inc. All rights reserved. No part of this publication may be reproduced in any form without the prior written permission of the publisher. Nissan North America, Inc. Training Department Technical Training Revised Printing: September, 2011 This manual uses post consumer recycled fibers Training Department Technical Training Nissan North America, Inc. reserves the right to alter specifications or methods at any time.
A significant function of drilling fluids is reduction of frictional forces between the wellbore and the drill string. New techniques in drilling and completions are being used to drill horizontal wells in unconventional resources.