Ford Sierra

4.1.1.4. System timing

THE GENERAL DATA

Four-cylinder рядный engine ONS (general view)

The cam-shaft is located in a head of the block of cylinders, actuates the valve by means of the lever of valves and is put in action by a gear belt.

Working backlash of valves (in a cold condition):

  – The inlet: 0,20 mm;
  – The final: 0,25 mm.

Distribution phases

The engine	1,3 дм3 and 1,6 дм3	2,0 дм3
OZD	22 ° before ВМТ	24 ° before ВМТ
ZZD	54 ° after НМТ	64 ° after НМТ
OZW	64 ° before НМТ	70 ° before НМТ
ZZW	12 ° after ВМТ	18 ° after ВМТ

OZD and ZZD – accordingly opening and closing of the inlet valve;
OZW and ZZW – accordingly opening and closing of the final valve;
ВМТ and НМТ – accordingly the top and bottom dead points.

Gear belt

Mark: Ford Powergrip
Type:
– The engine 1,3 дм3	70НМ 6288 АА
– The engine 1,6 дм3	70НМ 6288 АА
– The engine 2,0 дм3	70НМ 6268 АА
Number of teeths
– The engine 1,3 дм3	119
– двигатель1,6 дм3	119
– The engine 2,0 дм3	122

Cam-shaft

The cam-shaft rotates in three bearings.

Diameters of bearings of a cam-shaft:
– The forward	41,987 – 42,013 mm
– An average	44,607 – 44,633 mm
– The back	44,987 – 45,013 mm
Internal diameters of plugs of bearings:
– The forward	42,035 – 42,055 mm
– An average	44,655 – 44,675 mm
– The back	45,035 – 45,055 mm
Axial люфт a cam-shaft	0,104 – 0,204 mm
Thickness of persistent linings of a cam-shaft	3,96 – 4,01 mm
Lifting of cams:
– The engine 1,3 дм3	5,9639 mm
– The engine 1,6 дм3	5,9639 mm
– The engine 2,0 дм3	6,3323 mm
Height of cams:
– The engine 1,3 дм3	35,894 – 36,234 mm
– двигатель1,6 дм3	35,894 – 36,234 mm
– The engine 2,0 дм3	36,260 – 36,600 mm