Dacia SuperNova (engine E7J). Service manual — part 9

ENGINE E7J-A-2/60

10

10 - 12

ENGINE AND LOWER ENGINE UNITS

THE SPRING OF THE VALVES

They are identical for both intake and exhaust.

Length when free (mm)

44,93

Length under load at:

-27 daNm

37

- 53,6 daNm

-

- 65 daNm

27,6

Length of whirls - when joined together (mm)

26,01

Whirl diameter (mm)

4

Inner diameter (mm)

21,5

CAM SHAFT

Axial play (mm)

0,06 - 0,15

Number of bearings

5

Distribution diagram:

-advance of intake opening

-5

0

-delay of intake closing

35

0

-advance of exhaust opening

41

0

-delay of exhaust closing

-5

0

CHARASTERISTICS

ENGINE E7J-A-2/60

10

10 - 13

ENGINE AND LOWER ENGINE UNITS

PISTONS

The bolt is steady in the connecting rod

and loose in the piston.
Direction of mounting: with the arrow to-
wards the flywheel.
There are three classes of association with
the jacket.

Markings on the pistons:
1 - arrow towards the flywheel
2 - class of piston (A-B-C)
3 - line-up marks used by the supplier.

Piston
line-up

Piston diameter (mm)

Jacket diameter (mm)

marks
A

75,765 - 75,775

*

75,8 - 75,75,81

*

B

75,775 - 75,785

*

75,81 - 75,82

*

C

75,785 - 75,795

75,82 - 75,83

The piston diameter is measured for the

mark:
A = 46 mm.

* - the respective values are not included in the classes

CHARASTERISTICS

ENGINE E7J-A-2/60

10

10 - 14

ENGINE AND LOWER ENGINE UNITS

BOLTS

Length (mm)

60

Outer diameter (mm)

19

Inner diameter (mm)

11

CYLINDER JACKETS

They are of the type: movable, wet.
The seal fitting is the type: rubber ring J.

Inner diameter (mm) 75,8

Jacket height(mm) H2

130

Centring diameter (mm) D

80,6

Extra height without a fitting (mm)

X

0,02-0,09

Jacket height (mm) H1

91,5

Depth in the cylinder
crank-case K1

91,5

+ 0,03

+ 0,035

+ 0,005

- 0,015

- 0,055

CHARASTERISTICS

ENGINE E7J-A-2/60

10

10 - 15

ENGINE AND LOWER ENGINE UNITS

RINGS

CONNECTING RODS

The horizontal play of the connecting rod end: from 0.310 to 0.572

C

AUTION

!

Do not use numbering punchers because of the risk of creating the be-

ginning of fissures. Use an indelible pen.

CRANKSHAFT

In case a rectification is made, the

runner course must remain the same along
at least 140

o

out of the bearing and crankpin

circumference.

These areas are defined in sections A

and B as shown in the adjoined scheme.

Thickness (mm):

-compression ring

1,5

-sealing ring

1,75

- oiling ring (scraper)

3

0

0

Number of bearings

5

Bearing diameter (mm)

- nominal: 54,795 +/- 0,01
- repair: 54,550 +/- 0,005

Crankpin diameter (mm)

- nominal:

43,98

-0,02

- repair:

43,73

-0,02

Axial play (mm)

- 0,045 - 0,852 cu uzurã

- 0,045 - 0,252 fãrã uzurã

CHARASTERISTICS