Lukas P 640 TG - Manual (Page 38)

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5. Position the new valve block on the connection flange, making sure you do not move or
damage the O-rings.
6. Now screw on the fastening screws of the valve block and tighten.
Please consult the spare parts lists for the necessary torques.
7. Vent the unit once the repairs are complete.
12.3.7 Replacing the engines / motors
Replace the engines / motors if they are defective and direct repair of the valve block by a
dealer or the manufacturer is no longer possible. The engine / motor may only be replaced
with the hydraulic motor switched off. Electric motors must be disconnected from the power
supply.
Engines / motors may only be replaced as a complete component. Empty the fuel tanks of
combustion engines beforehand and make sure that no engine oil escapes when you are
removing the engine.
Procedure for replacing the engine / motor:
1. Loosen the fastening screws of the engine / motor.
Observe the relevant spare parts list.
2. Pull the engine / motor off. Please ensure that you do not
damage the engine / motor shaft mount.
3. Equip the shaft of the new engine / motor with an appropriate
adjusting key (provided it is not already in place).
4. Grease the shaft of the new engine / motor and push the
shaft of the new engine / motor into the engine / motor shaft
mount.
Ensure that the adjusting key of the engine / motor shaft is
inserted into the correct guide of the engine / motor shaft
mount.
5. Assemble the engine / motor using fastening screws and
tighten.
Please consult the spare parts list for the necessary
torques.
6. For combustion engine pumps, top up the necessary liquid levels (e.g. engine oil, fuel).
For electric motor pumps, connect the necessary electrical cables.