General repair instructions GENERAL REPAIR INSTRUCTIONS
Tensioning the steel roller chains
Reason of damage
The tension of steel roller chains is correct when the slack side deflects about 2% of the centre distance between shafts under thumb pressure at the centre and with a slight load on the tight side. When new chains are fitted, the tension should be checked at shorter intervals.
Identify reason of damage, limit the case of damage and safeguard the machine.
Spare parts Use genuine CLAAS spare parts and corresponding CLAAS special tools. Please indicate the machine no. and the serial no. of the engine and/or of the implements in question when ordering spare parts and for any technical questions. This is necessary to prevent incorrect spare parts deliveries.
Engine Always disconnect the battery cable (–) prior to starting work on the engine.
Gearboxes When removing the gearboxes, first drain the oil and then remove the gearbox. Separate parts which are firmly connected with each other by means of a soft metal-tip or plastic-tip hammer.
Example: For a distance between centres of shafts of 500 mm, the slack span of the chain should deflect about 10 mm.
Taper ring fasteners Taper ring fasteners provide a safe mechanical connection, even when transmitting high forces from the driving element on the shaft and vice versa, if they are properly prestressed. Assembly: When installing taper ring fasteners, it is important that the shaft, hub, parallel key and the taper rings have been thoroughly cleaned, that semi-fluid lubricant of NLGI class 00 (e.g. CLAAS semi-fluid lubricant EP 00) is applied and that the components are tightened to the specified torque in the correct order of assembly.
Alternator Attention! Attention!
Do not use solid grease when assembling the parts!
– Never disconnect the cables connecting governor, alternator and battery with the alternator running.
Disassembly:
– Do not connect battery terminals in reverse polarity. This will burn out the alternator diodes.
After loosening the axial clamping, loosen the taper ring fasteners with a sharp blow, using a block-ended tube.
– Do not carry out any work on live parts unless the engine is stopped and the battery cables are disconnected. – Do not flash connections to check current flow. This will damage the semiconductors. – Before doing any electric welding on the combine, be sure to disconnect the alternator terminals! – The battery provides the current for the field excitation required to start the alternator action via the charge indicator bulb. Burned out bulbs must therefore be renewed to ensure reliable field excitation.
Attention! The inside diameter of the block-ended tube must be large enough to extend over the tapered ring.
Self-locking bolts (MK bolts) (with microencapsulated adhesive) Replace self-locking bolts, e.g. Verbus-Plus / Imbus-Plus and similar types every time such bolts are removed. In exceptional cases, they may be reused up to three times. Always observe the specified tightening torque. Always tighten self-locking bolts with microencapsulated adhesive rapidly to the specified tightening torque. When removing these bolts, quickly unscrew them completely. These self-locking bolts must not come into contact with sealing compound (e.g. "Epple 33").
0293 490.0 - RHB XERION
1.3.1
