Mitsubishi FUSO FH 1997, Service Manual

Page: 64 / 200

01-11
01
Adjustment of V-Belt Tension
Newly installed V-belts can stretch during their initial running-in period.
To prevent this from becoming a problem, run the engine for several
minutes after installing the V-belt, then readjust. Perform this cycle
several times.
WARNING
–
You must take special precautions to prevent the engine from
rotating while a V-belt is being inspected or adjusted.
CAUTION
–
• Make sure that you turn off the engine before attempting to
inspect or adjust the V-belts.
• Make sure that you fasten all bolts and nuts securely after adjust-
ing the V-belts. Remember that too much tension can damage the
V-belts and bearings.
• Do not grease V-belts. This causes them to slip, which reduce
service life.
0
Special tools
Location Tool name and shape Part No. Application
1, 2
Belt tension gauge MH062345 Measurement of tension of V-belt
[Inspection]
Measure the extent of flex A when the center of V-belts 1, 2 as illustrated
is depressed with a force of 98 N·m {72 lbf.ft, 10 kgf·m}.
B : Alternator pulley
C : Water pump pulley
D : Cooler compressor pulley (Air-conditioner)
E : Tension pulley
F : Crankshaft pulley
Service standards
Unit : mm {in.}
Location Maintenance item Standard value Limit Remedy
1, 2
V-belt tension (Each one) Fan 12 to 16 {0.47 to 0.63} — Adjust
Air- 16 to 20 {0.63 to 0.79}
conditioner
11518
1
C
A
E
F
B
A
D
2
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