Page 63 - E BOOK ENGINE MECHANICAL M2
P. 63

4. SERVICE POINTS OF 4D56 ENGINE COMPONENT


                                                       14. Install the engine air intake pipe.
                                                       15. Use the MUT-III to erase the diagnosis codes.

                                                            This  will  erase  the  diagnosis  code  resulting  from
                                                       Note the  crank  angle  sensor  connector  being  discon-
                                                            nected.




















                            Fig. 4-3

                                                       (2) Timing Belt "B" Installation
                                                       1. Align timing marks on the crankshaft sprocket "B",
                                                       and silent shaft sprockets with their timing marks.
                                                       2. Install timing belt "B" onto sprockets and ensure that
                                                       its tension side is not slack.








                            Fig. 4-4


                                                       3. Loosen tensioner "B" mounting flange bolt, one to two
                                                       turns.
                                                       4. Tighten the tensioner "B" attaching hexagon socket
                                                       head bolt.
                                                       5. Tighten the tensioner "B" attaching flange bolt.

                                                             If  the  bolt  is  tightened  first,  the  tensioner  "B"
                                                       Note  should  be  turned  together,  resulting  in  reduced
                                                             timing belt "B" tension.



                            Fig. 4-5

                                                       6. Ensure that the deflection is as specified when the
                                                       belt is pushed by the index finger at the position indicat-
                                                       ed by an arrow.
                                                           Belt deflection: 4 - 5 mm


                                                       <For Your Reference>
                                                       The Timing belt B is used to drive the silent shafts that
                                                       is adopted on the 4D56 engine, this mechanism can ef-
                                                       fectively reduce the engine secondary vibration for the 4
                                                       cylinders diesel engine with 2000 ml total displacement
                            Fig. 4-6                   or less.
           Pub. No. PTAE1228                              4 - 2
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