Bosch Rexroth Hagglunds DUc MS2 Installation & Maintenance Manual page 74

74/88 Hägglunds DUc Drive unit | Maintenance and repair
Bosch Rexroth AB, Version 06.2020, RE 15326-WA
Water-oil cooler, tube type (European version)
The cleaning procedure shall be carried out without removing the tube stack from
the body.
• Drain the cooler from water.
• Remove the outer screws around the periphery on both ends. Do not remove the
nuts located between the end cover and the retaining flange. See Fig. 61.
• Remove the end covers. Mark the cover so it can be reassembled in the same
position.
• Remove the dirt by pushing a 3 mm rod through the tube. Flush the tubes with
fresh water.
• Reassembling in reverse order. Be sure that the o-rings are in correct position
and mount the end covers in correct position.
DD00073883
Fig. 61: Exploded view, tube cooler
Water-oil cooler, tube type (American version)
The cleaning procedure shall be carried out without removing the tube stack from
the body.
• Drain the water from the cooler using the provided drain port.
Oil chamber
• Flood the oil chamber with a commercial solvent and let soak for 30 minutes.
• Backflow with solvent or oil.
• Remove all chemicals from shell side before placing into service.
Cooling tubes
• Use a 50/50 solution of inhibited muriatic acid and water.
• Remove all chemicals from tube side before placing into service
O-ring
End cover