Man D 2840 LE 301, Repair Manual

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Checking and repairing pipe cluster for heat exchanger
57
D
Remove pipe cluster, see page 54
Fig. 1
When the pipe cluster is removed, we recommend
always checking the position of the deflectors (ar-
rows) (the picture shows the pipe cluster for a
D 2848 LE 403 engine).
Displaced deflectors may reduce the flow of cool-
ant, which in turn leads to an increase in coolant
temperature.
Fig. 2
Measure the position of the deflectors. Use the
pipe-cluster side with the collar (arrow) as refer-
ence edge (this side can be recognised as that end
of the pipe cluster with the larger diameter).
Fig. 3
Reference spacing of the deflectors.
A 111 mm
B 207.5 mm
C 304 mm
D 394.5 mm
E 497 mm
F 593.5 mm
G 690 mm
Fig. 4
If deflectors are found displaced, bring them into
their original position.
To prevent the deflectors from being displaced
again, the 4 outer pipes on the edges (marked
black in the picture) are to be soldered on to every
deflector.
B
C
D
E
F
G
A