Checking Drive Belts
WARNING: This page is about a different car, the 2006 Infiniti G35. However, it is still accessible from the selected car via links, so may be relevant.
WARNING:
Be sure to perform when the engine is stopped.
- Inspect belts for cracks, fraying, wear and oil. If necessary, replace.
- Inspect drive belt deflection or tension 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 the belt tension with belt tension gauge (commercial service tool: BT3373-F or equivalent) at points marked down triangle shown in the figure.
- When measuring deflection, apply 98 N (10 kg, 22 lb) at the down triangle marked point.
- Adjust if belt deflection exceeds the limit or if belt tension is not within specifications.
CAUTION:- When checking belt deflection or tension immediately after installation, first adjust it to the specified value. Then, after turning the 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 the deflection or tension without looseness.
Belt deflection and tension
BELT DEFLECTION AND TENSION CHART
| Deflection adjustment | Unit: mm (in) | Tension adjustment(1) | Unit: N (kg, lb) | |||||
|---|---|---|---|---|---|---|---|---|
| Used belt | New belt | Used belt | New belt | |||||
| Limit | After adjustment | Limit | After adjustment | |||||
| Alternator and power steering oil pump belt | 7 (0.28) | 4 - 5 (0.16 - 0.20) | 3.5 - 4.5 (0.138 - 0.177) | 294 (30, 66) | 730 - 818 (74.5 - 83.5, 164 - 184) | 838 - 926 (85.5 - 94.5, 188 - 208) | ||
| A/C compressor belt | 12 (0.47) | 9 - 10 (0.35 - 0.39) | 8 - 9 (0.31 - 0.35) | 196 (20, 44) | 348 - 436 (35.5 - 44.5, 78 - 98) | 470 - 559 (48 - 57, 106 - 126) | ||
| Applied pushing force | 98 N (10 kg, 22 lb) | - | ||||||
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