>> Electric equipment and major repairs of engines
>> Major repairs of engines
>> Head of cylinders
>> Clearing and condition check
Removal of a deposit from a head of cylinders by means of the wire brush clamped in a drill
Check of deformation of a demountable plane
1, 3 – on a diagonal
2 – on an axial line
With the help шпателя from firm breeds of a tree remove a friable deposit from heads of valves and combustion chambers. Deposit adjournment delete a wire brush.
Deposit removal зачисткой is not supposed by an emery paper.
For removal of greasing, corrosion and a scum from channels will boil a head of cylinders in a vessel with a washing-up liquid. Details of a head of cylinders wash out in an engine cleaner. At washing watch, that from springs has not descended пассивирующее a
The head of cylinders is executed from an aluminium alloy, therefore it cannot be washed out in that solution which is intended for the heads cast from pig-iron. If the head surrenders in repair it is necessary to inform on it.
Check up deformation of a demountable plane of a head of cylinders by means of calibre and щупа. If deformation exceeds 0,08 mm at length of 152 mm, or 0,15 mm on all length of a head a head of cylinders follows прошлифовать.
If deformation of a demountable plane of a head of cylinders is that that exceeds limiting reduction of height owing to polishing it is necessary to replace a head of cylinders. At polishing of a head of the V-shaped engine the seat of a soaking up collector changes, therefore follows also профрезеровать and a collector flange for the adequate size.
Polishing is carried out only in specialised workshops.