DATE
30-11-2001
TECO/ATL AUTHOR
BOOK CODE
1-5302-556
MODEL No.
50839
DATE OF ISSUE
01-94
REVIEW 02
APPROVAL
9
15
12
14
Rocker arm pin, extraction
Before extracting the rocker arm pin in 3LD 450, 3LD 451/S, 3LD
510, 3LD510S engines, unscrew screw 1, as per picture 10.
Extract the pin using tool 2 Part. no. 7276-3595-040, picture 11 also for
4LD 640, 4LD 705, 4LD 820 engines.
Rocker arm pin and hole
Dimensions (mm)
A = 15.032 ÷ 15.050
B = 14.989 ÷ 15.000
Clearances
(A-B) = 0.032 ÷ 0.061
(A-B) = worn limit = 0.120
Head
Do not disassemble while it is hot as to avoid any possible
distortion.
If the head surface is distorted, smooth it by removing up to 0.3 mm
thickness.
Always replace the copper gasket, see picture 34 for the choice of
thickness.
Gradually tighten the nuts according to the following order 1, 3, 2, 4,
at 50 Nm for 3LD 450, 3LD 451/S, 3LD 510, 3LD510/S, and at 80
Nm for 4LD 640, 4LD 705, 4LD 820.
Injector, projection
The projection of the nozzle ends A with respect to the head surface
shall be:
2.5÷3 mm for 3LD 450, 3LD 451/S
3÷3.5 mm for 3LD 510, 3LD 510/S
3.5÷4 mm for 4LD 640, 4LD 705, 4LD 820
Adjust by means of a copper gasket B having a thickness of 0.5
mm, 1 mm, 1.5mm .
10
11
13
VDISASSEMBLY/REASSEMBLY
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