SERVICE MANUAL TIMING, GEAR TRAIN & FRONT COVER Section 7 INSTALLATION Install    the    Timing    Gear    Train,    Front    Cover    and Vibration Damper as follows: 1. Reinstall   crankshaft   with   new   drive   gear   and drive spline installed as follows: (Refer to Section 6 for crankshaft installation). a. Remove the roll pin from the crankshaft and press a new pin (1,  Fig.  23) in its place, as shown.  Adhear to 1.78 mm  (0.070  in.)  pin protrusion. Figure 23.  - Roll Pin Installation Diagram 1. Roll pin b. Heat   the   new   gear   and   spline   evenly   to approximately 400". c. Identify appropriate heat using a thermomelt stick (see tool list for number). When  the  initial  dull  and  chalky  mark  turns  a glossy liquid the desired temperature is reached. NOTE:  Pay no attention to color change when using thermomelt. d. Using  asbestos  gloves,  align  the  notch  on the  rear  of  the  gear  with  the  roll  pin  in  the crankshaft.      Slide   the   gear   until   it   seats against the crankshaft shoulder. e. Slide  the  spline  on  the  crankshaft  until  it seats against the gear.    Hold  the  gear  and spline  until  they  cool  sufficiently  to  hold  in place. 2. Using    a    new    gasket,    install  the  crankshaft front  plate.    Tighten  bolts  to  27  N•m  (20  Ibf-ft) torque. 3. Install  the  camshaft,  camshaft  gear  and  valve tappets as described in Section 4. NOTE:    Check  camshaft  end  play  and  be  sure  the tappets move freely in their bores. 4. Install the idler gear as follows: a. Assemble   component   parts   as   shown   in Fig.  24. Figure 24.  - Idler Gear and Component Parts Assembly 1. Retaining bolt 5. Gear 2. Stub shaft 6. Bearing 3. Spacer 7. Spacer 4. Bearing b. Install  the  assembly  with  the  timing  marks facing out.  Be sure the rear spacer (7, Fig. 24) is in position.  A small amount of grease will aid in holding the spacer. c. Install and tighten the retaining bolt (1, Fig. 24)to 115 N•m (85 Ibf-ft) torque. 5. If the injection pump gear was removed install it as   follows:      (For   engines   equipped   w/UTDS* Model 100 Fuel Injection Pump) *United Technologies Diesel Systems (formerly AMBAC) CGES-185-3 PRINTED IN UNITED STATES OF AMERICA Page 12