Note. Removal, installation, replacement of camshafts is shown on the injection engine VAZ 21124 (1,6i). Features of removing the cylinder head cover from the VAZ 2112 engine (1,5i). see text.
Removing
1. Remove the rear timing belt cover (see "Rear timing belt cover - removal and installation").
2. Remove the cylinder head cover (see "Cylinder head cover - removal, installation, replacement").
3. In order not to damage, remove the emergency oil pressure sensor (see "Emergency oil pressure sensor in the engine - replacement"), or disconnect the wire tip from the sensor.
4. Using an 8 mm socket wrench, evenly, half a turn, unscrew the 20 bolts securing the camshaft bearing housing.
5. Remove the camshaft bearing housing.
Note. On the VAZ 2112 engine (1,5i) remove the camshaft bearing housing together with the spark plug guide tubes (candle wells). We remove the pipes from the camshaft bearing housing.
6. We take out two plugs of technological holes from the seats in the cylinder head (near the rear ends of the camshafts).
7. Remove the exhaust camshaft.
8. Remove the intake camshaft.
9. Remove the seals from the camshafts
10. We examine the camshafts. On the necks and camshaft cams there should not be signs of heavy wear, scratches, cracks, traces of metal enveloping.
Installation
1. Lubricate the bearing journals and camshaft cams with clean engine oil.
2. We put the camshafts in the cylinder head. The camshafts are not interchangeable and are marked.
The exhaust camshaft is marked 1006014.
The intake camshaft is marked 1006015.
In addition, the intake camshaft has an additional belt.
Attention. When repairing an engine on a car, do not use a sealant with a high content of silicone (silicon compounds), whose vapors can get through the crankcase ventilation system into the cylinders and further into the exhaust tract. Use a sealant specifically labeled as safe for the oxygen sensor.
Attention. Do not apply a lot of sealant to the mating surfaces of the camshaft bearing housing. When tightening the mounting bolts, the sealant squeezed into the internal cavities of the engine can clog the oil channels.
3. We apply a thin layer of Loctite-574 sealant or similar on the plane of the cylinder head and on the lower surface of the camshaft bearing housing around the holes of the candle wells according to the following scheme:
4. We install the camshafts in the cylinder head with the keyways up.
5. We install the bearing housing on the cylinder head and evenly tighten the bolts of its fastening until the bearing housing contacts the cylinder head. We finally tighten the bearing housing mounting bolts in pairs, with a torque of 8.0-10.0 Nm (0.8-1.0 kgf-m) in the sequence shown in the photo (see below).
6. We press in the camshaft seals (see "Camshaft seals - replacement") and install two plugs in the end face of the cylinder head.
7. On the VAZ 2112 engine (l,5i) We apply clean engine oil to the rubber seals of the ring of the guide tubes of the candles (candle wells) and install the pipes in the head.
Further assembly is carried out in the reverse order of disassembly.
Camshaft Bolt Tightening Order