SAFARI BSVI - SERVICE MANUAL

DRIVESHAFT 2 2. GENERAL GUIDELINES FOR TESTING DRIVE SHAFT NOISE:  Ensure that the DRIVER is alone in the vehicle while conducting the test.  All the windows of the vehicle should be fully rolled- up to reduce the disturbances caused by external noises.  Drive on a smooth stretch of road and pay particular attention to various noises emanating from the front portion of the vehicle. Observe the changes in noise levels through speeds between 10 to 60 kmph (6 and 36 mph).  It should be noted here that the driver may encounter difficulty in distinguishing between similar sounding noises resulting from either the drive shaft or the underbody (for example noise from strut and caliper).  Therefore, it is advised that the car be driven on uneven and bumpy surfaces as well, to observe the noises which may then be attributable to the underbody.  Focus on that side of the car being considered for the drive shaft complaint.  Tests for CV (wheel side) and Inboard (engine side) joints are different and need to be conducted separately. TESTING FOR NOISE: Checking for wheel side (CV) joint noise: (This noise will appear to emanate closer to the wheel, rather than the engine). 1. Shift to the 2nd gear and maintain a steady speed between 20 and 30 kmph (12 and 18 mph). 2. Drive the car to form a figure of “8” as shown in the Identify an audible and persistent “Cluck” – like noise during either an extreme left or extreme right turn. 3. The “Clucking” noise on a particular turn can be confirmed by repeating the turn. Checking for engine side joint noise: (This noise will appear closer to the engine, than the wheel). 1. Shift to the 4th gear and maintain a steady speed between 40 and 60 kmph (24 and 36 mph). 2. Lower the car speed by gently applying the brakes while ensuring that the tyres do not screech and the car does not dive forward sharply. 3. Identify an audible “Dug” sounding noise as the car decelerates. As the car slows down, it can be observed that the sound would become louder and occur after longer intervals.