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ENGINE 273 MPFI
PRECAUTION
Do not overtighten or under tight the compressor
belt.
(Ensure that compressor belt tension at tight side
using belt tension meter / clevis gauge.
It should be between 175 – 185 Hz on lower span
for new belt & 145 – 155 Hz for the used belt.)
•
Tighten upper sliding bolt.
•
Tighten lower mounting bolt of compressor.
•
Connect battery terminals.
•
Start the engine & confirm the proper alignment &
functioning of belt.
Belt Tension :
Check the conditions of belts on the engine. Examine
the edge of the belt for cracks or fraying.
Check the tension of the belt by pushing on it with
your thumb for Alternator belt and AC compressor
belt at location indicated. It should be 5 to 6 mm.
If the belt tension is not proper, get it attended at the
nearest authorised service outlet.
Correct tension of the belt is very critical from belt life
and belt noise point of view. It is recommended that
belt tension should be measured with clavis gauge to
ensure recommended values as given below
Alternator belt
Frequency should be checked in middle of lower span
of belt.
New belt to be re-tensioned to 150 ~ 155 Hz (125 ~
130 Hz for used belt) on vehicle after running for 15
min.
AC compressor belt
Frequency should be checked in middle of lower span
of belt.
New belt to be re-tensioned to 180 ~ 185 Hz (150 ~
155 Hz for used belt) on vehicle after running for 15
min.