Drive Belts Tension Adjustment
| Portion | Belt tightening method for adjustment |
|---|---|
| Alternator and power steering oil pump belt | Adjusting bolt on idler pulley |
| A/C compressor belt | Adjusting bolt on idler pulley |
DRIVE BELTS TENSION REFERENCE CHART
| CAUTION | When belt is replaced with a new one, adjust it to value for "New belt" to accommodate for insufficient adaptability with pulley grooves. When deflection or tension of belt being used exceeds "Limit", adjust it to value for "After adjustment". 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. When installing belt, make sure that it is correctly engaged with pulley grooves. Keep engine oil, working fluid and engine coolant away from belt and pulley grooves. Do not twist or bend belt excessively. |
Scheme 1
- Remove front engine undercover with power tool.
- Loosen idler pulley lock nut (A) and adjust tension by turning adjusting bolt (B). For the specified belt tension, refer to " «CHECKING DRIVE BELTS»(ref-282588-S38803564362008040500000) ".
- Tighten nut (A). : 34.8 N.m (3.5 kg-m, 26 ft-lb)
Tension Adjustment
Belt tensioning is not necessary, as it is automatically adjusted by auto tensioner.
WHEEL BALANCE ADJUSTMENT
- If a tire balance machine has adhesion balance weight mode settings and drive-in weight mode setting, select and adjust a drive-in weight mode suitable for road wheels.
Scheme 2
Scheme 3
Scheme 4
- Set road wheel on tire balance machine using the center hole as a guide. Start the tire balance machine.
- When inner and outer unbalance values are shown on the tire balance machine indicator, multiply outer unbalance value by 5/3 to determine balance weight that should be used. Select the outer balance weight with a value closest to the calculated value above and install it to the designated outer position of, or at the designated angle in relation to the road wheel. CAUTION: Do not install the inner balance weight before installing the outer balance weight. Before installing the balance weight, be sure to clean the mating surface of the road wheel. Indicated unbalance value x 5/3 = balance weight to be installed Calculation example: 23 g (0.81 oz) x 5/3 = 38.33 g (1.35 oz) --> 40 g (1.41 oz) balance weight (closer to calculated balance weight value) Note that balance weight value must be closer to the calculated balance weight value. Example: 37.4 --> 35 g (1.23 oz) 37.5 --> 40 g (1.41 oz) Install balance weight in the position shown in the figure at right. When installing balance weight to road wheels, set it into the grooved area on the inner wall of the road wheel as shown in the figure so that the balance weight center is aligned with the tire balance machine indication position (angle). CAUTION: Always use genuine Nissan adhesion balance weights. Balance weights are unreusable; always replace with new ones. Do not install more than three sheets of balance weight. If calculated balance weight value exceeds 50 g (1.76 oz), install two balance weight sheets in line with each other (as shown in the figure). CAUTION: Do not install one balance weight sheet on top of another.
- Start tire balance machine again.
- Install drive-in balance weight on inner side of road wheel in the tire balance machine indication position (angle). CAUTION: Do not install more than two balance weights.
- Start tire balance machine. Make sure that inner and outer residual unbalance values are 5.0 g (0.18 oz) each or below. If either residual unbalance value exceeds 5.0 g (0.18 oz), repeat installation procedures. BALANCE WEIGHT REFERENCE Maximum allowable unbalance Dynamic (At rim flange) Less than 5.0 g (0.18 oz) (one side) Static (At rim flange) Less than 20 g (0.71 oz)