Drive Unit Out Of Service - Bosch Rexroth Hagglunds DUc MS2 Installation & Maintenance Manual

Maintenance and repair | Hägglunds DUc Drive unit
9.7.2 Manual override of water valve
To open the water valve manually, turn the knob with a screwdriver (clockwise).
Water-oil plate cooler
DD00098821
Fig. 62: Water valve at water-oil plate cooler

9.8 Drive Unit out of service

Periods out of service
1. Check system for leaks. All system pipe joints and rotating seals are to be
checked to find if any leaks exists. Leaking pipe joint shall be immediately
corrected, if possible by tightening. Joints that repeatedly continue to show
leakage are to be replaced during off-season maintenance. Leaking rotating
shaft seals are remarked in logbook and corrected during the off-season
maintenance.A corrective action has to be verified under operation, which
means that checking of leaks preferably is done two to three weeks in advance
of shut down.
2. Topping up system oil. If necessary system oil shall be filled before the system
is shut down for the off-season stop. Doing so means that the oil is well
cleaned trough filters before shut down and reservoir bottom silt is avoided.
Note!
When system oil is filled, always use the power unit filling connection to ensure
the oil to be filtered before entering the tank.
3. Air bleeding. To avoid internal corrosion ensure that components are oil filled.
With the hydraulic pump in idling it is recommended to air bleed the pump as
well as the hydraulic motor casings in conjunction with the final stop. The pump
air bleeding is done at the upper most drain port (U1) on the pump casing
by slowly open the hose connection nut and keep open until a smooth oil
flow is coming through the threads. Air bleeding can be substituted by adding
vapour active anti corrosion agent in to the oil before the planned shutdown.
Introduction of such additive shall be done a couple of weeks in advance
to the stop. Quantities to be added shall be in accordance with supplier's
recommendation.
Knob
RE 15326-WA, Version 06.2020, Bosch Rexroth AB
75/88