Repair of the camshaft, rockers and hydraulic lifters (engine Toyota 1S, 1S-E, 2S, 2S-E)

Disconnect the battery and the inlet of the air filter. Drain the cooling system. Tag and disconnect all hoses, wires, rods, tubes and brackets attached to the hull of a camshaft. Unscrew and remove the rear housing (for motors series 1S-E and 2S-E). Remove the timing belt, pulley, lid and body of a camshaft, loosening each bolt a little at a time. Measure camshaft end-play (max. allowable value - 0,35 mm). Remove the seal from the holder. After removing the holder, remove the distribution of dividing the shaft from the housing. Disconnect the rocker arm, removing them from the lifters. You can then remove the lifters, pulling them out of the cylinder head (it displays rocker and lifters in the correct order to ensure their installation in their original positions during assembly). Check for scoring, pitting, and visible signs of overheating (blue discoloration of) the camshaft and rocker arm. Check the radial runout of a camshaft bearing journals (max - 0,04 mm). With the help of a micrometer, measure the height of the cams (the nominal height - 38,926-39,026 mm, the maximum - 38.78 mm). Then measure the diameter of each neck, and the planting holes in the hull of a camshaft, and compare them to the size recommended by the manufacturer. Before installing the lifters to pump them (remove air). Immerse them one by one in the oil container, insert the mandrel into the hole and sink plunger check valve, then move the plunger up and down several times while applying gentle pressure on the ball. Do not disassemble the hydraulic lifters. Installation is performed in sequence, reverse the removal, taking into account the following recommendations. Put it on cams and cervical camshaft and hydraulic lifters and rocker arms to motor oil. Insert the camshaft into the case, then insert the new O-ring seal holder and seal (the first two or three bolts holding the coil holder, apply the sealant). Before installing the dispenser housing ¬ shaft with respect to the cylinder head, clean the mounting surface, then apply sealant. Tighten the bolts to a torque of 15 Nm.