F2B ENGINE 117 T RAKKER E URO 4/5 Figure 237 Figure 239 106238 106240 By suitable scraper and abrasive paper, accurately clean surfaces ( ) of central body (1) from carbonaceous deposits, taking care to avoid damaging the su rfaces and variable geometry ring. Then, with compressed air, clean variable geometry surfaces and ring from removed residues. Check again, as described in relating chapters: - variable geometry movement; - actuator; - actuator travel. Mount turbine body (1) on central body (2) taking care to avoid damaging turbine rotor and align turbine body variable geometry slot ring. Do not force mounting operation:
in case of jamming, it might damage variable geometry w ith consequent regulation system faulty operation. Once mounting has been completed, make sure that turbine body results to be matched correctly on central body. Position turbine body on central body and clamp on central body in such a way that marks, made on dismounting, are matching. Tighten nut clamping the clamp at 11.3 Nm torque. Check again, as described in relating chapters: - actuator; - actuator travel. Figure 238 106235 Position clamp (1) on central body (2) NOTE Should clamp (1) be replaced with an integrated heat guard, a new actuator has tobe mounted with an integrated heat guard at the place of existing one.
Position accurately cleaned seal ring on central body. Apply a thin layer of antiscuff paste on cleaned matching surfaces: central body / turbine body. Print 603.93.641 Base q November 2006