Checking Drive Belts: Notes

WARNING: Be sure to perform when the engine is not running.

Inspect the belts for cracks, fraying, wear, or oil contamination. If necessary, replace the belts with new ones.
Inspect the belt deflection by applying 98 N (10 kg-f, 22 lb-f) on the belt midway between pulleys as shown in illustration.
Measure the belt tension using commercial service tool at the belt locations as shown in illustration.
Tool number : BT-3373-F
NOTE:
- Inspect the belt deflection or tension when engine is cold.
- Adjust if the belt deflection exceeds the limit or if belt tension is not within specifications.
  
  Fig 1: Drive Belt Routing Diagram
  Courtesy of NISSAN MOTOR CO., U.S.A.
CAUTION:
- When checking the belt deflection or tension immediately after installation, first adjust it to the specified value. Then, after turning the crankshaft two or more turns, readjust to the specified value to avoid variation in deflection between the pulleys.
- Tighten the idler pulley lock nut by hand and measure deflection or tension without looseness.
  
  Fig 2: Locating Lock Nut And Idler Pulley
  Courtesy of NISSAN MOTOR CO., U.S.A.