Contents: Removal ⤓ Installation ⤓
The picture shows the 1.2/1.3/1.5L engine produced from January 1984 to August 1990.
Removal
Carburetor engine: Remove the air filter, see p. 6.6.
Disconnect ignition wire "1" from the distributor cap.
Remove the ignition distributor "2", see p. 4.8.
Carburetor engine: Remove the fuel pump, see p. 6.4.
Unbolt cylinder head "3".
Remove toothed belt "4", see p. 1.6.
Loosen the camshaft gear fastening, holding the gear or camshaft from turning. To lock the camshaft, insert a solid screwdriver from the side under the rocker shaft so that the shaft pin rests against the screwdriver when unscrewing the bolt. The second option is to lock the camshaft gear with a rod from the front. To do this, insert a suitable rod or screwdriver into the hole in the gear and rest it against the upper edge of the cylinder head. To avoid damaging the cylinder head, put a wooden gasket. Holding the screwdriver, unscrew the camshaft fastening bolt. Remove the gear; if necessary, you can remove it with light blows from a rubber hammer.
Remove seal "6".
Unbolt and remove the rocker arm block -7/8-.
Note: Before doing this, loosen the valve clearance adjustment screws. First, loosen all rocker arm axle mounting bolts by half a turn, then slowly and evenly unscrew.
Up to 8.90: Unbolt the back cover "9" and remove it together with the gasket "10".
Up to 8.90: Unscrew the mounting bolt through the hole in the cylinder head, see Fig. K-1020. 11 - Thrust flange, 12 - Camshaft thrust bearing housing.
Carefully pull the camshaft out through the hole in the cylinder head on the gearbox side.
Installation
Wash all parts in gasoline, clean mating surfaces.
(The article was taken from the website: «www.MitsubishiMan.ru»)
Before 8.90: Check the axial play of the camshaft. To do this, insert a feeler gauge between the thrust bearing housing and the camshaft. Permissible value: 0.05 + 0 20 mm, wear limit. 0.4 mm. If the measurement result exceeds the wear limit, replace the thrust bearing housing and repeat the check. If the play is still large, replace the camshaft.
Lightly lubricate the camshaft and insert it into the cylinder head.
Caution: Be careful not to damage the bearing races.
Up to 8.90: Insert the camshaft with the thrust bearing housing into the cylinder head. The threaded hole in the camshaft thrust bearing housing must be facing up. Then align the threaded hole with the bolt hole on the cylinder head, insert the bolt and tighten.
Before 8.90: Screw on the back cover with a new gasket.
From 9.90: Install the camshaft so that the locating pin faces upward.
Lubricate the rocker arm block with engine oil, install, tighten the bolts in small portions and finally tighten with a force of 24 Nm (8 valve engine). The tightening force on a 12 valve engine is 32 Nm.
Install the camshaft oil seal using special tools MD-998306/7. To do this, first screw tool MD-998307 into the camshaft. Lubricate the surface of the tool with a thin layer of clean engine oil.
Lubricate the sealing lips of the oil seal with engine oil and push the oil seal in.
Using light hammer blows on the MD-998306 tool, drive the seal into the cylinder head.
Note: If you do not have special tools, you can use 2 tubes of suitable diameters. Do not damage the seal when installing.
Install and secure the camshaft gear.
Install the timing belt, see p. 1.6.
Carburetor engine: Install the fuel pump with 2 new gaskets, see p. 6.4.
Adjust valve clearances, see paragraph 1.18.
Install the cylinder head cover.
Install the ignition distributor, see p. 4.8.
Place the spark plug wires onto the distributor cap.
Carburetor engine: Install the air filter.