OPERATIONS INSIDE THE ENGINE COMPARTMENT
PERIODIC INSPECTION AND MAINTENANCE
2-7
OPERATIONS INSIDE THE ENGINE COMPARTMENT
A1. CHECK V-BELT FOR CRACKS,
FRAYING, WEAR, AND ADJUST ITS
TENSION
M6020200100561
V-BELT CONDITION
Check the whole rounds of the V-belt for cracks, fray-
ing and wear.
V-BELT TENSION
ALTERNATOR DRIVE BELT TENSION
CHECK <6G7>
CAUTION
Check the alternator drive belt tension after turn-
ing the crankshaft clockwise one turn or more.
1. Make sure that the indicator mark is within the
area marked with A in the illustration.
2. If the mark is out of the area, replace the drive
belt.
NOTE: The alternator drive belt tension check is
not necessary as alternator drive belt auto-ten-
sioner is adopted.
ALTERNATOR DRIVE BELT TENSION
CHECK AND ADJUSTMENT <4M4>
Check the drive belt tension in the following proce-
dure.
STANDARD VALUE:
<4M40>
<4M41>
<WHEN THE VIBRATION FREQUENCY IS
MEASURED {SPECIAL TOOL (MB992080)
IS USED}: RECOMMENDATION>
NOTE: The vibration frequency measuring method is
recommended for check and adjustment of the drive
belt tension.
1. Connect the Special tool microphone assembly
(MB992082) to the Special tool belt tension meter
(MB992081) of the Special tool belt tension meter
set (MB992080).
2. Press the "POWER" button to turn on the power
supply.
3. Press number key 1. Check to ensure that "No.
01" appears on the upper left of the display and
that the following numeric values are displayed for
individual items (M, W, and S):
M 000.9 g/m
W 010.0 mm/R
S 0100 mm
If numeric values have not been entered (new
tool), set them according to the belt specifications
as shown below. Once you set them, you do not
have to set them again. The settings remain
undeleted even after battery replacement.
Item
When
checked
When
adjusted
When
replaced
Vibration
frequency
Hz
103
−
132
111
−
125
132
−
156
Tension N
294
−
490
343
−
441
490
−
686
Deflection
mm
(Reference)
8.0
−
11.0
9.0
−
11.0
8.0
−
9.0
AC511210AB
Alternator drive belt
auto-tensioner
A
Indicator mark
Item
When
checked
When
adjusted
When
replaced
Vibration
frequency
Hz
150
−
201
164
−
190
190
−
232
Tension N
245
−
441
294
−
392
392
−
588
Deflection
mm
(Reference)
9.1
−
12.7
9.8
−
11.7
7.2
−
9.8
AC507219AB
MB992082
MB992081
Belt tension meter set (MB992080)
Summary of Contents for PAJERO IV
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