Product Manual

Maintenance

Owner’s Manual for Stationary Diesel Generators 33

5. See Figure 5-13. Using a suitable belt deflection

gauge (A), apply 22 Ibs (10 kg) force midway

between the crankshaft (B) and alternator pulleys

(C).

6. Take note of gauge reading. If belt deflection is not

within specification, see Adjust V-Belt Tension.

7. Install four screws with nylon washers to fasten fan

guard to radiator shroud.

8. Install clamps and rubber couplings onto each end

of turbocharger exhaust outlet pipe. Install pipe to

turbocharger outlet and radiator shroud. Tighten

clamps.

Figure 5-13. Check V-Belt Deflection

Adjust V-Belt Tension

1. Loosen tension adjuster screw (top). Loosen hex

nut on pivot screw (bottom). Turn alternator out-

ward to reduce belt deflection, turn inward to

increase belt deflection.

2. Tighten tension adjuster screw (top) to 17–22 ft-lbs

(23–30 Nm). Tighten hex nut on pivot screw (bot-

tom) to 33–43 ft-lbs (45–58 Nm).

3. Check belt deflection and repeat steps as neces-

sary.

Belt Condition Deflection

New 0.31–0.47 in (8–12 mm)

Used 0.39–0.59 in (10–15 mm)

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