TIAGO

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1.2L REVOTRON ENGINE
59
2.5 REPAIR AND INSPECTION DETAILS:
A. Accessory Driving Belt:
Inspect the belt for excessive wear or damage.
Replace the belt if any of the following are
noticed:
Hardening - belt will be glossy and hard. Pressing
on the belt with a fingernail will not make an
impression.
 Cracks in rubber.
 Canvas showing
 Broken, cracked, or missing belt tooth
 Excessive wear on side of belt. The side of
the belt should appear to have been cut
with a knife.
In the early stages of belt wear, the load side of
the belt teeth will look like fluffy canvas with some
of the rubber missing.
In the later stage of wear, the canvas will be gone
from the belt teeth and showing exposed rubber.
B. Timing Chain :
Timing Chain is a part of a
that synchronizes the rotation of the
and the o that the engine
open and close at the proper times during
each cylinder's intake and exhaust In an
the timing belt or chain is also
critical to preventing the from striking the
valves.
C. Cylinder Head:
NOTE
 The mating surfaces of the cylinder head
are not machinable. If the surface is
warped, uneven, or damaged otherwise,
replace the cylinder head.
1. Check for cracks in the cylinder head by
pressure testing.
2. Using a straightedge, check several points on
the mating surface of the cylinder head
lengthwise and crosswise over the surface.
Use a feeler gauge under the straightedge to
determine the unevenness of the cylinder
head. Replace the head if the surface is out of
specification within a 150 mm by 150 mm
square.
Direction Specification
Lengthwise 0.015 mm
Crosswise 0.030 mm