For inspections that are done with a suitable belt
frequency meter, install the belt frequency meter on
the span of the belt at Position “A” . Refer to table 24
for the correct frequency for a new belt or used belt
on a specific engine. Table 24 also gives the
approximate span of belt between crankshaft pulley
and alternator pulley.
Table 24
Alternator Belt Tension and Frequency
Engine Model
Approximate
Span (mm)
New belt Used Belt
Frequency (Hz)
Tension (Nm)
and (lb)
Frequency (Hz)
Tension (Nm)
and (lb)
403EA-11 Naturally
Aspirated
167 mm - 205 mm 190-200 Hz 400 N (90 lb) 160-170 Hz 300 N (67 lb)
403EA-11
Turbocharged
167 mm - 205 mm 222-229 Hz
425 to 456 N
(95.5 to 102.5 lb)
205-214 Hz
364 to 395 N
(82 to 89 lb)
403EA-17 215 mm - 225 mm 150-170 Hz
400 to 489 N
(90 to 110 lb)
130-145 Hz
267 to 356 N
(60 to 80 lb)
404EA-22 236 mm - 247 mm 130-150 Hz
400 to 489 N
(90 to 110 lb)
110-130 Hz
267 to 356 N
(60 to 80 lb)
Adjustment
Illustration 44 g03383151
Typical example
Illustration 45 g03383155
Typical example
1. Loosen adjusting bolt (1) and mounting bolt and
nut (2). Loosen bolt (3).
2. Move the alternator to increase or decrease the
belt tension.
M0132847
75
Maintenance Section
Alternator and Fan Belts - Inspect/Adjust
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