Technical data
Group 20
28
Table 1
Calculation 3.1 Explanation
Factor
Ex
TD/TAD 520 GE, TD/TAD 720 GE
Cylinder no.
XXX
XXX
Cyl. 1
Cyl. 2
Cyl. 3
Cyl. 4
Cyl. 5 Cyl. 6
Injection pump manufacturing number
XXX
XXX
Injection angle, meas. on protractor.
Fb
akt
5.5
Injection angle, see eng. id. plate
∠
°
Fb
nom
-
6
Total 1 (Fb
akt
- Fb
nom
)
S1
=
-0.5
Corr. factor, see Table 1
Vh
korr
x
0.14
Total 2 (S1x Vh
korr
)
S2
=
-0.07
Pre-stroke, see Table 1
Vh
nom
+
6.11
Total 3 (S2+ Vh
nom
)
S3
=
6.04
Calculation 3.2 Explanation
Factor
Ex Cyl. 1 Cyl. 2 Cyl. 3 Cyl. 4 Cyl. 5 Cyl. 6
Length between block and roller tappet
L
152.22
Total 3 (S2+ Vh
nom
)
S3
-
6.04
E
k
(L- S3 = E
k
)
E
k
=
146.18
E
k
rounded to nearest value in Table 3
E
k
~
146.175
EP code (E
k
→
Table 3
→
EP code)
EP
=
344
(100 mm = 3.937")
Determination of the corrected fitting size, E
k
, and EP code for an
injection pump.
NOTE!
When you change the engine block camshaft or roller tappet, you must determine the corrected fitting
measurement, E
k
, and change the relevant EP code on the engine identification plate.
Mathematical formula for the corrected fitting size, E
k
:
E
k
= L - [(Fb
akt
- Fb
nom
) x Vh
korr
+ Vh
nom
)]
New EP code is found in Table 3.2 E
k
→
EP code
Injection angle Camshaft type Pre-stroke Pre-stroke
Length of pump
F
b
nom
Vh
nom
Corr. factor,
basic measure-
Vh
korr
ment L
0
(mm)
(100 mm = 3.937")
[ºC/A BTDC]
[mm]
[mm/ºC/A]
[mm]
5
6,32
6
6,11
7
5,9
8
5,7
9
5,5
10
5,31
4
5,7
4,5
5,6
5
5,5
5,5
5,4
6
5,31
7
5,1
8
4,9
A
0,14
143 (L
o
)
0,14
143 (L
o
)
B
