Contents: Removal ↳ Installation ↳
Attention! If the timing mechanism parts are to be used again, they must be installed in the same place where they were already. To avoid confusion, it is recommended to prepare a shelf for laying out the parts.
Removal
Turn the crankshaft so that the piston in the first cylinder is at TDC. Loosen the tension of the toothed belt and remove it only at the top from the camshaft sprocket, see p. 1.7.
Remove the cylinder head cover.
Secure the camshaft sprocket at the front using a mandrel. To do this, push the mandrel or a strong screwdriver into the hole in the sprocket and rest it against the upper edge of the cylinder head. To prevent damage to the sealing surface of the head, it is necessary to put a wooden block underneath. Hold the screwdriver firmly and release the camshaft sprocket; if necessary, you can lightly tap it with a rubber hammer.
First remove bearing caps 5, 1 and 3. The first bearing cap is located on the toothed belt side, the fifth bearing cap is located on the gearbox side. Then alternately loosen cap bolts 2 and 4.
Attention! The first bearing insert on the engine toothed belt side has an additional insert located inside.
Remove the camshaft.
Attention! If you are going to remove the plate tappets, they must first be marked so that they can be reinstalled in their original place during assembly.
Installation
If a used camshaft is reinstalled in engines with high mileage or with valve train noise, the axial clearance must be checked. Wear limit: 0.24 mm. Measurements are taken with the plate tappets removed and the first and fifth bearing caps installed.
Apply a thin layer of standard sealing compound, such as Loctite 518, to the surface of bearing cover 1 where it contacts the cylinder head.
Install the bearing cap in exactly the same position as it was installed.
If you removed the plate pushers, install them exactly in the same place where they were already installed. Lubricate the plate pushers with a thin layer of oil, do not allow them to warp.
Caution: Do not confuse with plate tappets.
Lubricate and install the camshaft.
Attention! The cam for cylinder 1 must point upwards. Install the covers according to the numbering.
Tighten bearing caps 2 and 4 alternately in a crosswise manner to a torque of 20 Nm.
Install and tighten bearing caps 5, 1 and 3 to 20 Nm. Adjust the fifth bearing cap to the end surface of the camshaft by lightly tapping it with a hammer.
Lubricate the new shaft sealing ring with a thin layer of oil, install it using the special Ford 21-110 tool. If you do not have such a tool, then the sealing ring can be driven in using a piece of pipe, just make sure that the inner and outer diameters of the ring and pipe are the same.
Install the camshaft sprocket and hand tighten the bolt.
Place the timing belt on the camshaft sprocket. Adjust the valve timing, see p. 1.7.
Tighten the timing belt, see p. 1.8.
Adjust the valve clearances, see paragraph 1.17.
Install the cylinder head cover.
Install the upper timing belt cover.