Page 35
Version 02-2010
LHR-2
Maintenance
General instructions for working on hydraulic systems
For reasons of safety, hose and pipe joints, connections and devices may not be loosened
when the system is under pressure.
Before doing so, the engine must be switched off and the pressure accumulator relieved. If
the machine was in operation for a long period before maintenance, the oil and oil con-
tainer are very hot!!
Before undoing screw connections, the surrounding area must be cleaned. Steel wool may
not be used for cleaning. It is advisable to flush the pipe system thoroughly after assembly.
All openings must be sealed with protective caps. Remove these only immediately before at-
taching the appropriate pipe or hose.
Fill the system with the prescribed or a suitable hydraulic fluid. The correct hydraulic
fluid, and in particular its viscosity, is decisive for the trouble-free operation of the system.
Check the hydraulic fluid for the ingress of water.
Check the hose and pipe connections regularly for leaks and tighten them. Screw connec-
tions may be tightened only when the system is depressurised. Defective pipes and hoses
must be replaced immediately.
Information
The hydraulic drive is structurally suitable for long, trouble-free operation. It requires little main-
tenance. This is indispensable, however, since experience shows that up to 80% of the all occur-
ring faults can be attributed to dirt, poor maintenance and the wrong oil selection.
Checking the oil level - hydraulic drive
Check the level before putting into operation and after 8 hours of operation.
Swivel the shaft so that you can easily unscrew the dipstick.
The oil must be at the marking on the dipstick with the tractor in a horizontal position.
The oil level should not fall below the minimum level marked on at the dipstick.
Remove the dipstick to top up.
Finally, tighten the dipstick firmly.
Fig. 32. Checking the oil level.
Marking
Oil tank
Oil dipstick with aeration and vent valve