V70 XC AWD L5-2.4L Turbo VIN 56 B5254T (1998)
Viscous Coupling: All Technical Service Bulletins
Viscous Coupling - Rotating Sound
February 1, 2000
1998-1999 S70/V70 AWD, XC
Viscous coupling housing/viscous coupling, rotating sound
A rotating sound may be heard from the viscous coupling/housing on some AWD/XC vehicles. The sound occurs most frequently at low speed when
turning, and during warm weather at light to medium throttle.
This sound can be caused by movement of the outer bearing race in the torque tube housing. This service bulletin describes how to minimize this sound.