Revotron 1.2T
59
2.5 REPAIR AND INSPECTION DETAILS :
A. Timing 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.
NOTE
•
Inspect the condition of the water pump,
belt tensioner, and timing belt idler pulley
when replacing the timing belt. TATA
Motors recommends replacing these items
when replacing the time belt.
B. 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
