Ford Sierra

1982-1993 of release

Repair and car operation

VALVE

The valve are made of special steel, are located V-shapedly and are put in action from a cam-shaft through hydraulic pushers and levers of valves.

Sizes of valves (mm)

Valve type	The inlet	The final
Length	136,50-136,96	133,66-134,12
Diameter of a plate	38,90-39,10	33,91-34,11
Diameter of a core:
– the nominal	8,025-8,043	7,999-8,017
– repair 0,2	8,225-8,243	8,199-8,217
– repair 0,4	8,425-8,443	8,399-8,417
Valve lifting	9,535	9,535
Core gap in the directing	0,020-0,069	0,046-0,089

Working gap of valves: zero, hydraulic pushers are used.

Saddles of valves

Saddles of valves are inserted into a head of the block of cylinders.

Corner of a working facet of the valve	45 °
Width of a working facet of the valve	1,75-2,32 mm
Corner of the top facet of a saddle:
– inlet valve	30 °
– final valve	20 °
Corner of the bottom facet of a saddle:
– inlet valve	65 °
– final valve	70 °

Directing valves

Directing valves are made of cast iron and впрессованы in a head of the block of cylinders.

Diameters of openings directing:

  – the nominal: 8,063-8,094 mm;
  – repair +0,2: 8,263-8,294 mm;
  – repair +0,4: 8,463-8,494 mm.

Springs of valves

The single springs identical both for inlet, and to final valves are used.

Free length: 45,4-47,2 mm.
Length at the open valve: 27 mm.
Length at the closed valve: 37,084 mm.

Levers of valves

The levers of valves shaped from steel fasten the central bolt.

Pushers

Hydraulic pushers are made of steel, stamped in a cold condition and have a cylindrical form.

External diameter:

  – the nominal: 22,25 mm;
  – repair +0,25: 22,50 mm.