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1.6 Safety regulations for assembly, maintenance, and repair
work
Safety regulations for work prior to assembly, maintenance, and repair
Have assembly, maintenance, or repair work carried out by qualified and authorized personnel only.
Allow the product to cool down to less than 50 °C (risk of explosion from oil vapors, fluids and lubricants,
risk of burning).
Relieve pressure in fluid and lubricant systems and compressed-air lines which are to be opened. Use suita-
ble containers of adequate capacity to catch fluids and lubricants.
Release residual pressure before removing or replacing a component in the supply line. To depressurize pres-
surized lines, shut off the lines first, then release the residual pressure.
Work must only be carried out on lines when they are free of fluids and lubricants.
Ensure adequate ventilation of the operating room when conducting an oil change, working on the gaseous/
liquid fuel system or working with consumables (e.g. adhesive, cleaner).
Never carry out assembly, maintenance, or repair work with the product in operation, unless:
• It is expressly permitted to do so following a written procedure.
Lock-out the product to preclude undesired starting, e.g.
• Start interlock
• Key switch
• Close supply line for hydraulic starting.
• Close the main valve on the compressed-air system and vent the compressed-air line when air starters are
fitted.
Attach "Do not operate" sign in the operating area or to control equipment.
Disconnect the battery cables or actuate the battery isolating switch, if fitted. Lock circuit breakers.
Before starting work on CaPoS, if used:
• Switch off the charging system (DC/DC converter).
• Discharge the UltraCap modules using the appropriate discharger.
• Short-circuit the UltraCap modules with a suitable wire jumper.
Before working on the exhaust gas aftertreatment system, close the shutoff valve on the reducing agent
tank. Note that the reducing agent pumps continue to run for a certain period when the engine is stopped.
Disconnect the control equipment from the product.
Use the recommended special tools or suitable equivalents when instructed to do so.
Safety regulations when performing assembly, maintenance, and repair work
Special tools and lifting equipment
Use only proper and calibrated tools. Observe the specified tightening torques during assembly or disassem-
bly.
Setting down, lifting and climbing
Carry out work only on assemblies or plants which are properly secured.
Use appropriate lifting equipment for all components. Use all specified attachment points and observe the
center of gravity.
Never stand beneath a suspended load.
Never work on engines or components when they are held in place by lifting equipment.
Make sure components or assemblies are placed on stable surfaces and secured against tilting over or roll-
ing away. Adopt suitable measures to prevent components/tools from falling down.
14 | Safety | MS15065/01E 2019-01
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