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Cardan (cross) type universal joint operation is typically designed to be in a range of 1 to 3°, figure 1. A cardan type joint can operate for short periods of time at angles up to approximately eight degrees. Angles that are not within the desired range will cause drive line vibration and significantly shorten the life of the universal joint. Vibration that is created by incorrect u-joint angles is usually most noticeable at low speeds, under 40 mph., under load or acceleration. If a problem with u-joint angle is suspected perform the following basic inspection procedures. 1. Rotate the drive shaft to check for binding, or misalignment of the cross or bearing cups. 2. Check that all surfaces are clean. 3. Check the condition of the motor and transmission mounts. Broken mounts are a frequent cause of drive shaft vibration and are often overlooked. If these conditions are satisfactory a preliminary check of angles can be made with an inclinometer. Before attempting to measure angles ensure that tire air pressure is correct, that the vehicle is at the correct trim (chassis) height, and the ground surface is level. 1. Measure the angle of the front slip yoke by placing the inclinometer on the bottom of the bearing cup, figure 2. Position the inclinometer on the clean flat surface of the bearing cup, level the bubble and note the reading. 2. Measure the drive shaft angle, as shown, and subtract the smaller number from the greater to determine the angle. 3. Repeat the same procedure on the rear u-joint and pinion input shaft.
Driveline Vibration Analyzer 2.0 Plus – Basic System DVA 2.0 Plus Quick Reference Guide APMT0352 March 2011 More time on the road™ Kit Contents Page 2 Power Tach Ch 1 Driveline Vibration Analyzer Tach Ch 2 Accel 1 Accel 2 Accel 3 Starting a New Test Page 8 Running a Basic Test Page 10 Installing Flywheel Sensor Installing Accelerometer and Connecting PC Page 4 Page 6 Running an Advanced Test Page 11 Troubleshooting and Diagnostics Installing Output Shaft Sensor Page 5 Page 12 Installing Engine and Frame Accelerometers Appendix Items Page 7 Page 13 Kit Contents 2 VV-SOD-04 Advanced VV-SOD-03 Basic Software Flash Drive VV-CBL-01 USB Cable VV-CBL-03 Speedometer Pickup Adapter (SPA) Cables (6) VV-CBL-04 DAQ Power VV-CBL-02 Gray Speed Cables (2) Power Tach Ch 1 Driveline Vibration Analyzer Tach Ch 2 Accel 1 Accel 2 Accel 3 VV-LAP-01 Data Acquisition Box with USB VV-SOC-02 Flywheel Sensor VV-SOC-03 4G Accelerometer (Seat) VV-SOC-05 25G Accelerometer (2) VV-SOC-04 Tap (3/4"–16NC) VV-SOC-03 Speedometer Sensor Activation Procedure • Put Flash Drive into computer and load software. This will take about 15 minutes. • Connect DAQ box (white) up to wall power with power supply and cable. • Connect USB cable between DAQ box and computer. • Turn on power to DAQ box (rear mounted switch). • Open DVA Icon. • Page through activation process and generate ACTIVATION KEY for DVA. • Email (firstname.lastname@example.org) or phone (269 743-9372) with ACTIVATION KEY. • You will receive an ACTIVATION CODE. • Type ACTIVATION CODE into allocated box on screen following activation key. Note: For vehicle testing, use 12volt power cable in kit for DAQ box.
Written by Donald P. Hessenaur As aircraft engine prices continue to rise beyond the reach of most who would like to build and fly their own aircraft, many are turning to alternate power sources. This is not a new phenomenon. From the Wright brothers on, many have designed, built or converted engines to aircraft use. At one time or another engines have been used from automobiles, motorcycles, outboard motors and even snowmobiles, with varying degrees of success or failure. AUTO ENGINE CONVERSIONS Today many automotive engine conversions are appearing on the aviation scene. They are definitely a viable alternative. The automotive engine today is very advanced technically and relatively low in cost when compared to Lycomings and/or Continentals. Unfortunately, automotive engines are designed and optimized for the automobile and not for aircraft. Generally auto engines operate at a much higher RPM. The torsional vibration characteristics of a given engine, connected to a transmission, drive train and wheels, are quite different from that of the same engine, connected to an aircraft propeller. The damping action of the tires on the road and the inertia effects of the mass of the automobile are not even close to the damping/inertia effects of a propeller turning in air.
Troubleshoot common drive shaft problems. ○ Check ... Remove and replace a drive shaft assembly. ○ Replace ... Drive Shaft Vibration can be caused by. Learning Objectives Troubleshoot common drive shaft problems. Check universal joint wear. Measure drive shaft runout. Remove and replace a drive shaft assembly. Replace universal joints. Perform basic service operations on a transfer case. Cite and practice good safety procedures. Chapter 60 1. Because a Transfer Case is heavy, use a transmission jack when removing. 2. Before disassembling a Universal Joint, Joint scribe/mark each component. Transfer Case Removal Use a hoist and transmission jack Transfer Case Oil Check the oil condition and level first. Replace dirty or contaminated oil
These instructions only apply to this particular version center support bearing and may not be correct for other versions. TOOLS NEEDED: • Ratchet • 12mm serrated wrench (triple square bit) – NAPA # SER2306 • 13mm socket • 18mm socket • 6 inch extension • 18mm open end wrench • Rubber mallet or dead blow hammer. . Expanding flat nosed snap ring pliers . Various other common hand tools INSTRUCTIONS: Read these entirely and understand them BEFORE you attempt this procedure. 1. Apply parking brake and wheel chocks to prevent vehicle from rolling. A lift is recommended for this repair. IMPORTANT: Carefully mark driveshaft orientation on both ends of shaft sections. (Transmission and differential ends, as well as splined ends where the two drive shafts come apart to allow removal of center support) The sections MUST be reassembled EXACTLY as they came apart for the removal of the old center support bearing, and the driveshaft needs to be reinstalled EXACTLY the same way, in the exact same orientation. Failure to do so can result in imbalance, vibration, and potential damage to vehicle. Otherwise a professional drive shaft shop must be employed to re-balance entire assembly. 2. Remove 6 10mm bolts at joint at rear of back driveshaft. Use the M12 triple square (12point) tool. (NAPA part number SER2306). 3. Remove 3 18mm wrench size (12mm bolt size) bolts from front of driveshaft. 4. Remove 3 18mm wrench size (12mm bolt size) bolts on flex disc. 5. Remove 13mm wrench size (8mm bolt size) bolts on plate covering center support. 6. On some models (Turbos), it may be necessary to loosen various exhaust system clamps, hangers and components to ease access to driveshaft. 7. Pull driveshaft toward front of vehicle to separate it from differential.
The automotive marketplace has seen a steady increase in customer demands for quiet and more comfortable vehicles. A customer’s expectations for NVH refinement often contradicts the constraints for lightweight vehicle designs and the need for a powertrain with increased fuel efficiency. The driveline of a vehicle can be a substantial cause of NVH issues. Variants in the driveline architecture (front wheel, rear wheel and four-wheel/all-wheel drive, automatic-, manual-, automatic-shifted manual transmission, etc.) combined with an overall increase in the complexity of the modern driveline systems can make the task of integrating them very challenging. Development of a well refined vehicle requires the understanding and control of several driveline-related noise and vibration problems within different frequency ranges, due to the multitude of driveline components and their potential excitation sources.. A key aspect of the driveline integration process is the realization that a design modification can have an impact on numerous NVH phenomena.
Within the mining industry an increasing trend in equipment design towards larger, more complex and more productive units is being experienced. As equipment grows in both size and capital cost, so downtime reflects not only in increasing maintenance costs, but also in greater loss of production by an idle unit. This has resulted, therefore, in an increasing interest in maintenance schemes that allow maximum operating life. The one viable solution to this is predictive maintenance - measuring machine condition and repairing when and only when measurements indicate it necessary. in a number of the vital phases of the mining operation, with some impressive results. On the s h o v e l s used for ore excavation, the condition of the motorgenerator set, the hoist and swing transmission, and the hoist's Magnetorque® drive are monitored. On the h a u l a g e t r u c k s used for transporting the ore to the primary crushing plant, the monitoring programme cov~ ers the diesel engine and generator. In the mine's c o n c e n t r a t o r , the autogeneous mills, pumps and conveyors are covered.
655 Eisenhower Drive Owatonna, MN 55060-0995 USA Telephone: (507) 455-7000 Tech. Serv.: (800) 533-6127 Fax: (800) 955-8329 Order Entry: (800) 533-6127 Fax: (800) 283-8665 International Sales: (507) 455-7223 Fax: (507) 455-7063 Form No. 102302 Assembly & Operating Instructions for: 1750 1750a D05223ST Original Instructions Heavy-Duty Engine Repair Stand Maximum Capacity: 2722 kg (6000 lbs.) Engine Stand Weight: 260 kg (573 lbs.) Description: Designed for mounting engines, transmissions, or other components by using the universal mounting plate or a mounting plate designed specifically for the application. The component may be rotated 360 degrees by using the crank handle; the component may be raised by using the lifting jack to increase swing radius for clearance when rotating the component. Two front wheels and two rear casters provide mobility. Tool Box Grease Fittings Tilting Shaft Assembly Crank Handle Engine Mounting Adapter Assembly (Universal Mounting Adapter Shown) Head Assembly Oil Fill Plug Oil Fill Plug Jack Release Valve Jack Handle (in storage position) Figure 1 Lifting Jack Floor Locks Explanation of Safety Signal Words The safety signal word designates the degree or level of hazard seriousness. danger: Indicates an imminently hazardous situation which, if not avoided, will result in death or serious injury. Warning: Indicates a potentially hazardous situation which, if not avoided, could result in death or serious injury. Caution: Indicates a potentially hazardous situation which, if not avoided, may result in minor or moderate injury. Caution: Used without the safety alert symbol indicates a potentially hazardous situation which, if not avoided, may result in property damage. © 2010 SPX