FOREWORDC HAPTER 1THP 94/42 R 4 XXTTHP 125/42 R 4 XXTTHP 140 H/42 R 4 XXT GB-07.2005 1-11. ForewordDear customer,Please read this user manual carefully before first using your truck-mounted concrete pump, so as to ensure thatyou use it safely and effectively.We have written this user manual to familiarise you with the design, use, operation and operating conditions, andto list the servicing and maintenance work required, together with information on safe working.Before starting to use the truck-mounted concrete pump, be sure that all the safety conditions have beensatisfied.This user manual forms part of the total documentation package for the truck-mounted concrete pump. It relatesexclusively to the superstructure that is fitted to the truck. For the truck itself see the separate user manual issuedby the truck manufacturer. There may be separate user manuals for certain components and options. These usermanuals should also be read and complied with.All repair work should be performed only by authorised skilled staff.If maintenance work is neglected or improperly performed, we may no longer be liable to perform our warrantyobligations under our conditions of supply.Only original WAITZINGER spare parts ensure quality and interchangeability.NOTE: Safety instructions should be complied with at all times! We reserve the right to make technical changes and improvements tothe equipment and its components from the illustrations and data setout in this user manual. This user manual is applicable only insofar as the truck-mountedconcrete pump corresponds to the version and equipment described. In the following sections the truck-mounted concrete pump is alsoreferred to as the “machine” or “equipment”.Only qualified and trained personnel over 18 years of age may work on and with the truck-mounted concretepump.Our customer service department will be pleased to offer you further information and advice if despite consultingthis user manual you encounter any problem with your truck-mounted concrete pump.We wish you all the best in trouble-free driving and use of your truck-mounted concrete pump.The management