Man D 2840 LE 301, Repair Manual

Page: 60 / 194

5
Checking and repairing pipe cluster for heat exchanger
58
Fig. 5
The soldering
À
is to be effected on the side facing
away from the engine coolant inlet
Á
.
1
2
2
Job instruction for soldering the deflectors on to the pipe cluster
Each of the 4 outer pipes on the edges is to be cleaned with the aid of a brass brush / emery cloth in the
area where the soldering is to be effected. The area must also be free of grease.
To effect the soldering, use soldering tin DIN 1707 − L − SN 50 PB SB (MAN no. 09.43007 − 0092), melting
range 183
_
C − 215
_
C and soldering fluid such as DEGUSSA Soltaflux K or similar products from other
manufacturers.
The soldering burner is to be set for a soft flame. At the soldering joint the parts are to be evenly heated but
must not glow. The soldering fluid must remain “vitreous” and must not burn.