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Removing the cylinder head
Removing the cylinder head If the engine has not yet been removed from the car, first perform the following operations: | - Disconnect "weight" from the storage battery.
- Remove the intake and exhaust manifolds.
- Remove the compressor of the air conditioning system, where it is available.
- Remove the ignition distributor, high voltage wires and spark plugs.
- Remove the pump with automatic level control system rear axle, where it is available.
- Disconnect all cables and hoses, and drain the cooling system.
- Remove the dipstick tube oil level indicator, where available.
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Engine M 123  | Removing the camshaft gear |
 | The sequence of tightening the cylinder head bolts on the engine M 123 |
 | The arrows indicate the small cylinder head bolts in the opening of the distribution chain (engine M 123) |
| - Unscrew the nuts and remove the valve cover.
- Loosen the hose clamps and remove the bypass hose between water pump and thermostat housing. Remove the thermostat housing.
- On vehicles with automatic transmission, remove the rack between the right engine mount and the cylinder head.
- Rotate the crankshaft pulley bolt up until both valves in the first cylinder are closed, and the TDC mark on vibration damper is aligned with the arrow to set the ignition timing.
- Make a mark the relative positions of the chain and camshaft sprocket.
- Unscrew and remove the chain tensioner spring. Then, unscrew the nuts and remove the tensioner body with the plunger.
- Remove the camshaft sprocket bolt, locking the sprocket with a metal rod, passed in one of the holes.
- Move the asterisk, remove it from the circuit and tie to one side. Note that the labels on the sprocket located on the outer face side.
- Loosen the bolts and remove the vent tube extending from the water pump to the cylinder head.
- Remove the cylinder head bolts in the reverse order to that shown in the figure, using the internal hex socket wrench. Do not forget about the two bolts in the tunnel of the camshaft. Keep in mind that there are more long bolts to the camshaft bearings.
- Ask your assistant to lift the chain guide and keep it inside yourself and remove the cylinder head unit. If she does not give in, tap on it with a wooden hammer. Do not push the lever to the jack pads so as not to damage the mating surfaces. Put the cylinder head on wooden blocks to prevent damage to the valves.
- Remove the cylinder head gasket from the unit.
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Engine M 110
 | Remove the valve tappet (engine M 110) |
 | TDC on the gear of the camshaft and the body (the engine M 110) |
 | Removing the side guide pins (motor M 110) |
 | The sequence of tightening the cylinder head bolts on the engine M 110 |
| - Remove the vacuum pump (which is by design).
- With internal hexagonal socket wrench, unscrew the screws and remove the front cover of a camshaft.
- Remove oil return pipe bolts.
- Loosen the overflow hose clamps and remove the hose from the water pump to the thermostat housing. Remove the case.
- Unscrew the nuts and remove the valve cover.
- Separate the spring of a cam with a screwdriver.
- Rotate the crankshaft pulley bolt until the top of the cam lobe in the first cylinder does not take the top position, then lower the valve lever so that the pull position kulachkov.Otmette pushers pushers. Repeat this operation on other valves.
- Rotate the crankshaft pulley bolt until the top of the cam lobe in the first cylinder does not take the top position and the TDC mark on vibration damper is aligned with the pointer timing. Make sure that the marks on the camshaft sprocket are aligned with the marks on his body.
- Remove the bolts stars camshaft sprocket blocked by a metal rod, passed in one of the holes.
- Remove the radiator. This operation is desired since it will free a space for the work.
- With internal hexagonal socket wrench, unscrew the cap and loosen the chain tensioner inner tube approximately two turns. Remove the outer ring and remove the tensioner. If it is jammed, remove the inner tube and screw the bolt to remove the node.
- Knock hammer pins and remove the upper guide rod from the camshaft case.
- Move camshafts way back, remove the spacers and chain with sprockets and chain tie to one side.
- Unscrew the lid, remove the pin and remove the reference guide sprocket chain.
- Knock hammer pins and remove the lateral guide rod from the cylinder head.
- Remove the cylinder head bolts in the reverse order to that shown in the figure, using the internal hex socket wrench. Do not forget about the two bolts in the opening circuit.
- Ask your assistant to lift the chain and keep right inside the chain guide, and then remove the cylinder head unit. If it is jammed, release it by tapping with a wooden hammer. Do not insert into the socket levers for installation, so as not to damage the mating surfaces. Put the cylinder head on wooden blocks to prevent damage to the valves.
- Remove the cylinder head gasket from the unit.
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