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
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