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930394-52 Rev. 12/22/05 4:21 PM Page 1 HYDRO-BOOST BRAKE BOOSTER Installation Guide 4. Enable ignition system and start the engine. 7. Check fluid level and add fluid if needed. 5. Turn the steering wheel from stop to stop several times. Do not hold it against the stop. 8. Again start engine and turn steering wheel from stop to stop several times (avoid turning fully against stops as much as possible). Recheck fluid level and fill as required. If there is evidence of fluid foaming, turn off engine and wait an hour for foam to clear. Lacks Power Assist Booster or Pedal Chatters X X X Looses Reserve Pressure HAIRPIN CLIP BRAKE PEDAL PUSHROD X PUSHROD SPACER PUSHROD BUSHING 6. Loosen the locknuts holding the HydroBoost unit to the firewall and then slide the linkage, nylon washers and brushing off the pedal pin. 4. Disconnect all hydraulic lines from the Hydro-Boost unit (pressure, steering gear and return lines). PRESSURE LINE MASTER CYLINDER HYDRO-BOOST SPACER X X X BRAKE LINES DO NOT DISCONNECT JDA356 STOP-LIGHT SWITCH 3. Separate the master cylinder from the mounting studs. N OT E : DO NOT disconnect the brake lines from the master cylinder unless necessary to avoid bending or damaging those lines. X Pedal Returns Slowly 5. Disconnect the Hydro-Boost pushrod linkage from the brake pedal. NOT E : It may be necessary to remove the stoplight switch from the brake pedal. If so, unplug the stoplight switch wires, remove the hairpin retainer, slide the switch off the pedal pin just far enough to permit removing the switch from the pin. Do not damage the switch. N OT E : Before beginning work, be sure vehicle is parked in a level area and that wheels are chocked to prevent unintentional movement. Read all of these instructions before attempting to install the HydroBoost unit. 2. Remove the nuts attaching the master cylinder to the Hydro-Boost unit.
(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 .
Welcome to the MCILEARN Series Your Webinar Will Begin Shortly Today’s Topic Shake Out: Vibration Analysis If you do not have an audio connection, dial 877-739-5904 and enter the Audio PIN number given to you on your screen © 2012 Motor Coach Industries Int'l, Inc. and its subsidiaries. All Rights Reserved. Learning Objectives • Identify the different classifications of vehicle driveline vibrations • Begin to diagnose & locate the source of a vehicle driveline vibration • Provide a correction to eliminate the vibration from the vehicle © 2012 Motor Coach Industries Int'l, Inc. and its subsidiaries. All Rights Reserved. Safety Message • Always use personal protection devices – Safety glasses, ear protection, etc • Always observe all safety precautions listed in the Maintenance Manual including but not limited to: – – – – – – Ensure coach is on a level surface Ensure parking brake is applied Chock wheels Always use jack stands Shut off batteries Utilize Lock Out/Tag Out procedures © 2012 Motor Coach Industries Int'l, Inc. and its subsidiaries. All Rights Reserved. Vibration Identification: Identifying the Source of a Vibration © 2012 Motor Coach Industries Int'l, Inc. and its subsidiaries. All Rights Reserved. Vibration Analysis Primary sources of vibrations • Tires & Wheels – Rims, tires, hub & drum assemblies • Driveline – Driveshaft & slip-joint, u-joints, yokes & flanges – Working angle of driveshaft • Engine & Transmission – Crankshaft, injectors & cylinders, vibration dampers, engine supports, exhaust...
GENERAL PROCEDURES Driveshaft Runout and Balancing Special Tool(s) Dial Indicator Gauge with Holding Fixture 100-002 (TOOL-4201-C) or equivalent Mastertech® Series MTS 4000 Driveline Balance and NVH Analyzer (Vetronix) 257-00018 or equivalent Driveshaft Inspection NOTE: Driveline vibration exhibits a higher frequency and lower amplitude than high-speed shake. Driveline vibration is directly related to the speed of the vehicle and is noticed at various speeds. Driveline vibration can be perceived as a tremor in the floorpan or heard as a rumble, hum or boom. NOTE: Refer to Specifications in this section for all runout specifications. 1. NOTE: Do not make any adjustments before carrying out a road test. Do not change the tire pressure or the vehicle load. Carry out a visual inspection of the vehicle. Operate the vehicle and verify the condition by reproducing it during the road test. • 2. With the vehicle in NEUTRAL, position it on a hoist. For additional information, refer to Section 100-02. • 3. The concern should be directly related to vehicle road speed, not affected by acceleration or deceleration or could not be reduced by coasting in NEUTRAL. The driveshaft should be kept at an angle equal to or close to the curb-weighted position. Use a twin-post hoist or a frame hoist with jackstands. Inspect the driveshaft for damage, undercoating or incorrectly seated U-joints. Rotate the driveshaft slowly by hand and feel for binding or end play in the U-joint trunnions. Remove the driveshaft. For additional information, refer to Section 205-01. Inspect the slip yoke splines for any galling, dirt, rust or incorrect lubrication. Clean the driveshaft or install new U-joints as necessary. Install a new driveshaft if damaged. After any corrections or new components are installed, recheck for the vibration at the road test speed.
driveshaft series 6Q – 175 – 250 I N S TA L L AT I O N - O P E R AT I O N - M A I N T E N A N C E M92-1442B I SSU E D 4/2013 R EAD AN D U N D E R STAN D TH I S MAN UAL PR IOR TO OPE RATI NG OR S E RVICI NG TH I S PROD UCT. Before installing the driveshaft, be sure the motor and Geareducer are on level bases and that their shafts are in reasonable alignment. Note match numbers on the driveshaft flanges and remove the yokes. Coat the motor shaft and Geareducer shaft with “Thred-Gard” (Crane Packing Co.) or similar lubricant. Place the key halfway in motor and Geareducer shafts, then install yokes as shown in Figure 4. Use a rubber mallet or wood block when tapping yokes to prevent damage. Tighten each yoke set screw against key. Align match numbers on tube and yoke flanges and bolt the tube and flange assembly to the Geareducer yoke while supporting the motor end of the tube and flange assembly. Progressively tighten bolts to 60 ft·lbƒ (82 N·m) torque. Slide the motor so that motor yoke can be bolted to the tube and flange assembly without pushing or pulling on the bushings. Align match numbers and bolt the motor yoke to the tube and flange assembly. Progressively tighten bolts to 60 ft·lbƒ (82 N·m) torque. The distance between tube and yoke flanges should be as shown in Figure 4.
Eaton’s Driveline Angle Analyzer Tool Kit (DAA 2) Helps Eliminate Torsional Vibration Problems The tool kit diagnoses the driveline angles that cause torsional vibrations between the transmission and front and rear drive axles. Varying ride heights, angles and configurations can create torsional vibrations throughout the drivetrain, which in turn can cause noise complaints and vibrations that result in significantly reduced drivetrain component life. Frequently, vehicles are sensitive to small changes in driveline angles, making it virtually impossible even for a seasoned technician to visually inspect a driveline and see whether its component angles are going to lead to problems down the road. Eaton’s Driveline Angle Analyzer allows you to properly measure driveline angles and diagnose potential problems before serious damage to the equipment occurs. The analyzer also identifies corrections for optimum component life.
– Drivelines and Universal Joints Universal Joint Maintenance • Most factory-installed universal joints are sealed and don’t require periodic lubrication • After-market replacement joints are equipped with a grease fitting and must be greased periodically Drive Shaft Problem Diagnosis • Road testing – Vehicle should be driven while accelerating and decelerating as well as at various steady speeds – Vibrations caused by worn U-joints usually occur while accelerating Types and Causes of Vibrations • High speed vibrations – Usually caused by driveshaft imbalance • Vibrations during acceleration – Usually caused by worn double Cardan joint ball and socket • Low speed vibrations – Usually caused by improper operating angles Noise Diagnosis • Clunking noise while accelerating from a dead stop – Usually caused by worn or damaged U-joint – Can be caused by problems including excessive clearance between slip joint and extension housing • Squeaking noise – Often caused by worn or poorly lubricated U-joint Reasons for Universal Joint Failure • Lack of lubrication • Pushing another car • Towing a trailer • Changing gears abruptly • Carrying heavy loads Steps in Lubricating U-Joints 1. Wipe off the nozzle of the fitting 2. Attach the hose of the grease gun to the fitting 3. Pump grease slowly into the fitting 4. Stop pumping when grease appears at the bearing cups Inspecting the Drive Shaft • Check for fluid leaks • Check the U-joints for signs of rust or leakage • Check for movement in the joint while trying to turn the yoke and the shaft in opposite directions • Check the drive shaft for dents, missing weights, and undercoating or dirt...
X-TYPE DATE 05/04 Amended 09/04 XT100-08 TECHNICAL BULLETIN SERVICE Driveshaft Vibration – Diagnostic Method – Repair MODEL 2002-04 MY X-TYPE VIN C00001-E02938 Remove and destroy Bulletin XT100-08, dated 05/04. Replace with this Bulletin. Revisions are marked with a bar and in bold text. Issue: A new procedure has been developed for use after the WDS Vehicle Vibration Analyzer (VVA) has confirmed a vehicle vibration. Action: After a driveshaft vibration has been confirmed using WDS VVA, follow the workshop procedure outlined below. WORKSHOP PROCEDURE Note: There is no Labor Time Allowance to carry out road test diagnosis. Jaguar recommends a claim of 0.50 hrs. as straight time for VVA. Warning: Driveshaft bolts are one-time use only. Use new bolts for the final repair. Existing bolts may be reused throughout the diagnostic procedures. Raise vehicle on twin-post lift. Check for alignment of the green line on the rear differential flange with white paint spot on the rear of the driveshaft. If not aligned continue from step 3; if aligned continue from step 16. Remove the rear driveshaft joint to rear differential flange bolts and links where accessible. Rotate the driveshaft and remove the remaining rear driveshaft joint to rear differential flange securing bolts and links. Displace driveshaft from the rear differential flange. Remove and discard the gasket from the rear differential flange (where installed). Clean the mating faces. Install a new gasket to the rear differential flange, if previously installed. NOTE: THE INFORMATION IN TECHNICAL BULLETINS IS INTENDED FOR USE BY TRAINED, PROFESSIONAL TECHNICIANS WITH THE KNOWLEDGE, TOOLS, AND EQUIPMENT TO DO THE JOB PROPERLY AND SAFELY. IT INFORMS THESE TECHNICIANS OF CONDITIONS THAT MAY OCCUR ON SOME VEHICLES, OR PROVIDES INFORMATION THAT COULD ASSIST IN PROPER VEHICLE SERVICE. THE PROCEDURES SHOULD NOT BE PERFORMED BY “DO-ITYOURSELFERS.” DO NOT ASSUME THAT A CONDITION DESCRIBED AFFECTS YOUR CAR. CONTACT A JAGUAR RETAILER TO DETERMINE WHETHER THE BULLETIN APPLIES TO YOUR VEHICLE. Date of issue 05/04 Amended 09/04