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4.3.9.2. Installation of a head of the block of cylinders

Preparation for installation

PERFORMANCE ORDER
1. The interfaced surfaces of a head and the block of cylinders have to be absolutely pure. For their cleaning use a firm plastic or wooden scraper. When cleaning be careful as it is very easy to damage aluminum alloy. Check that the deposit did not get to oil and water canals. It is especially important for the lubrication system as the deposit can block supply of oil to engine components. If necessary clear channels.
2. Check the interfaced surfaces of a head and the block of cylinders for existence of notches, deep scratches and other damages. If defects small, they can be removed with machining. But at major defects of a detail are subject to replacement.
3. Using a metal ruler and the probe, check planeness of the interfaced surfaces.
4. Clear openings under bolts in the block. Screwing up of a bolt in the opening filled with oil can break off the block because of hydraulic pressure.

Installation

PERFORMANCE ORDER
1. Check that the piston of the first cylinder is in the top dead point. Check that two directing pins are installed in the block of cylinders.
2. Check that new laying of a head of the block of cylinders has the same type, as the original, and establish laying so that marking of OBEN or TORAHS was directed up and settled down from a gear belt.
3. Establish a head of the block of cylinders on the directing pins.
4. Establish new bolts of fastening of a head of the block of cylinders and tighten them at this stage by hand.
5. Gradually and in the sequence presented in the drawing tighten all bolts of fastening of a head of the block of cylinders the required moment in several stages.
6. Further installation is made in the sequence, the return to removal, taking into account the next moments.
7. At installation use new laying of a casing of the thermostat, collectors and a cover of a head of the block of cylinders.
8. Establish a new gear belt.
9. Tighten all bolts the required moment.
10. Start the engine and warm up it up to the normal working temperature. Switch off the engine, uncover a head of the block of cylinders and tighten a final stage bolts of fastening of a head of the block of cylinders.