Genuine Mazda MPV Driveshaft

Mazda MPV Driveshaft Parts and Q&A

• Drive Shaft
  PAY5-25-010
  Q: What are the functions and maintenance of driveshafts and universal joints on Mazda MPV?

  A:

  The driveshaft is a pipe linking the transfer case or transmission to the rear or front axle and which has Universal Joints (U-joints), each end of which permits the transmission of power at different angles. Every model has a two-piece rear driveshaft (with center bearing support), and 4WD models have a one-piece front driveshaft. All rear driveshafts have their rear parts consist of double-offset (constant velocity) joints directly above the bearer support in the center which allow the length of the rear axle to vary out of shape as the axle moves. Slip yokes are fitted to both 2WD and 4WD models with oil seals to avoid fluid leakages and block entry of dirt; any form of visible leakage will require the replacement of the seal. The driveshafts are not very service-intensive because the U-joints on 2WD models and the double-offset joints on all driveshafts are not serviceable and require replacement by complete assembly in case of problems, though the U-joints on 4WD models can be serviced. Balancing of the driveshaft is important and thus should be clean and checked to ensure there is no damage done to it and little balancing weights are not lost. In case of noise or vibration during driving, a road test may be applied to identify whether the driveshaft is the cause of trouble; this means to observe which engine speed causes the largest effect of the problem and to test in other gearboxes. In case the noise or vibration reduces, visual inspection of the driveshaft to check any damage and materials that affect the balance should be done and the tire balance or wheel damage checked. In case the problem continues with constant engine speed in all gears, the driveshaft is probably not the problem. Check U-joints wear: Drive slowly in High gear, then coast, then accelerate to hear clunking sounds or drive slowly in Neutral at 10 to 15 mph to hear unwanted driveline sounds. Also, extensive play may manifest itself by lifting the vehicle and turning the driveshaft by hand and monitoring the U-joints.