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Now the brake pipes have to be removed and the brake pads de-installed.(see Tip13). Untight the two screws, using a special tool. DC recommends to use a cutted nut (19er) . With a shorter insert and a 1 meter long pipe, you can loosen also tight screws . Cranked ring spanner wrenches are not useful , because they tend to deform the screw head when sliding sidewards. Corroded screw heads can be loosen with a pecial tool from Metrinch. These tool does not use the edges of the screw. Use a hammer (not too much) onto the head to help removing the rust. Best practise is to use a Truck automatic wrench (pneumatic), but this is not all time available ! |
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Then you need Loctite in order to gurantee tight seat. The special screw is very robust. Use a torque meter to tighten both screws.! Data : Special Safety screw : (Strenght 10.9) top, M 14 x 1,5 - torsion moment : 190 - 220 Nm, A 460 990 01 01 - 3,16 Euro incl. Tax Special safety srew (Strenght 10.9 ) lower , M 16 x 1,5 - torsion moment : 250 - 280 Nm, A 460 421 02 71 - 5,73 Euro incl Tax. |