Timing Belt Inspection; Tensioner Pulley And Idler Pulley Inspection - Mitsubishi 4G1 Series General Information Manual

11A-4-4
Crack
Separation
Cracked tooth base
Rounded edge
Abnormal wear
(exposed core wire)
Canvas worn exposing
rubber
Missing tooth
E
E
Mitsubishi Motors Corporation
Mitsubishi Motors Corporation
4G1 ENGINE (E - W) - 4G1 ENGINE (E - W) -
INSPECTION
1. TIMING BELT
Check the timing belt closely. Replace the belt with a new
one if any of the following defects is evident:
(1) Hardened backing rubber (the backing rubber is glossy,
(2) Surface cracks in the backing rubber
Crack
(3) Splits in the canvas and/or separation of the canvas and
(4) Cracks at the bases of teeth
(5) Cracks in the side of the belt
Cracked side
(6) Abnormal wear on the belt's sides
(7) Abnormal wear on teeth
(8) Missing teeth
2. TENSIONER PULLEY AND IDLER PULLEY
(1) Check that the pulleys turn smoothly without play and
Nov. 1995
Aug. 2000
Timing Belt Timing Belt
non-elastic, and so hard that scratching with fingernails
leaves no mark)
rubber
NOTE
The sides of the belt are normal if they are sharp as
if cut by a knife.
Initial stage:
Canvas worn (fluffy canvas fibers, rubbery texture gone,
white discoloration, canvas texture indistinct)
Final stage:
Canvas worn, exposing rubber (tooth width reduced)
are not abnormally noisy. Replace either or both of the
pulleys if necessary.
PWEE9520
PWEE9520-D Revised