Manifolds, Cylinder Head & Valves

2b.INSTALLATION : a)Reverse the removal procedure. b)It is always advisable to replace the Inlet & exhaust manifold gaskets with new ones. c)Torque the mounting bolts at the specified torque to avoid leakage of gases.

2c.CLEANING, INSPECTION & REPAIR

Clean the manifold and inspect for cracks and distortion. Replace the manifold with New one, whenever distortion is more than 0.4 mm (.016 in) per 250mm (10 inch) length. Inspect Air Hose & Clamps. Inspect retainer bolts and their washers, replace damage parts.

3.VALVE ROCKER ARM SHAFT ASSEMBLY

3a.REMOVAL : a)Remove the radiator brace, clamps/stiffener and rubber washer. Then remove the valve housing cover and the gasket. b)Remove the PCV. c)Remove the two nut (1-3) from studs (4-3) from the outer valve lever shaft bracket. Which hold the valve lever shaft brackets cylinder head. d)Remove the bolt (2-3) from the centre (long valve lever bracket. e)Lift of the valve rocker arm shaft and brackets. f)Lift out the push rods marking them so that they may be returned to their original positions.

Thoroughly clean the engine externally.

3b.DISMANTLING : Rocker Arm shaft a)Remove circlip from both ends of the shaft and take out Rocker Arms and other parts (10 to 25-7). b)To shift from centre bracket remove the roll pin and remove the shaft. Identify the rocker arms so that the can be installed in their original position.

3c.INSPECTION & REPAIRS a)Thoroughly clean all components in Kerosene or Diesel and blow using compressed air. b)Check the valve lever shaft expansion plugs. c)Check the clearance between the valve rocker arm shaft and valve rocker arm bushings.

Be sure all oil passages are free from sludge and sediment.