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    Page 112 - Catalog spare parts BPW LUFT
    P. 112
    Catalogs auto parts for car and truck

    AUTO PARTS

    Page 112 - Catalog spare parts BPW LUFT

    Auto Parts / BPW-EL-Luft 31051601e                                                                             Page 111
    
                                                                    BPW Hanger brackets                              7
    
    
                            Spare parts for hanger brackets, integrated supports, frames                           7.2
                     Changing the weld-in bushes (spring bolt assembly) in BPW hanger brackets                    7.2.1
    
    
              Changing the weld-in bushes (spring bolt assembly) in BPW air suspension hanger
              brackets for 70 mm wide trailing arms and loose wear plates
              Perform the following work if the mounting bushes are worn out:
    
    
              1.  Remove the worn-out bushes from the side plates
              2.  Insert new bushes and use spacer sleeve* (82.5) or trailing arm bush (72+0.5)
                  plus mounted wear plates to preload, align centrally and with adjustable hanger brackets
                  horizontally and tack-weld
                                                                                                                        AL
    
    
    
    
    
    
    
    
    
                     ! "                   #
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
              3.  Weld the bushes
              4.  When mounting the trailing arms:
                     - Lightly grease the stud thread and nut contact surface
                     - Mount wear plates
                     - Tighten lock nut    M 24 to M = 650 (605 - 715) Nm
                                           M 30 to M = 900 (840 - 990) Nm
    
    
                  Important for all welding work!                Welding method:
                    The trailing arms, air bags and plastic pipes      Inert gas welding
                    should be protected against sparks and weld       Weld wire quality G 4 Si 1 (DIN EN 440)
                    splashes during all welding work. The earth        Manual arc welding
                    terminal must under no circumstances be           Rod electrodes E 46 2 (DIN EN 499)
                    attached to the trailing arm or hub.
                                                                   Mechanical quality values must be equivalent
                                                                   to basic material S 355 J 2 or S 420.
                                                                   Weld thickness a 4   up to a 5  (DIN EN ISO 25817)
                                                                   Avoid end cavities and undercutting!
    
    
    
                                    
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