Checking Drive Belts

WARNING: This page is about a different car, the 2005 Nissan 350Z. However, it is still accessible from the selected car via links, so may be relevant.

WARNING: Be sure to perform when engine is stopped.

Inspect belts for cracks, fraying, wear and oil. If necessary, replace.
Inspect drive belt deflection at a point on the belt midway between pulleys.
- Inspection should be done only when engine is cold, or over 30 minutes after engine is stopped.
- Measure belt tension with tension gauge (BT3373-F or equivalent) at points marked *** shown in the figure.
- When measuring deflection, apply 98 N (10 kg, 22 lb) at the *** marked point.
- Adjust if belt deflection exceeds the limit or if belt tension is not within specifications.
Fig 1: Checking Drive Belts
Courtesy of NISSAN MOTOR CO., U.S.A.

CAUTION:

When checking belt deflection or tension immediately after installation, first adjust it to the specified value. Then, after turning crankshaft two turns or more, re-adjust to the specified value to avoid variation in deflection between pulleys.
Tighten idler pulley lock nut by hand and measure deflection or tension without looseness.

Belt deflection and tension

Fig 2: Belt Deflection & Tension Chart

Courtesy of NISSAN MOTOR CO., U.S.A.

if belt tension gauge cannot be installed at check points shown,checkdrive belt tension at different location belt.