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ASSEMBLY - TM-5-4210-220-34_449
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TM-5-4210-220-34 Truck Firefiighting 1000 GPM Multipurpose Model 2500L Manual
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INSTALLATION (cont) - TM-5-4210-220-34_451
TM 5-4210-220-34 3-8. ENGINE - Continued 3-8.8 Camshafts - Continued INSTALLATION (1) Insert the front end of camshaft (6) with the right-hand helix gear (4) through the opening on the right bank side  in  the  rear  end  plate  until  the  first  intermediate  bearing  enters  the  bore.    Continue  to  maneuver  the camshaft  and  bearings  into  the  engine  block  until  the  camshaft  gear  teeth  are  about  to  engage  with  the mating gear Use extreme care not to damage the cam lobes during camshaft installation. (2) Aline the timing marks of the gear train as detailed in para.  3-8.7 preceding. (3) Secure the camshaft rear end bearing (15) to the engine block using three bolts (13) and lockwashers (14). Rotate the camshaft gear (4) as required to install the bolts through the hole in the web of the gear.  Evenly tighten the bolts to 40 ft lb (54 Nm). (4) Turn the camshaft intermediate bearings until the holes in the bearings are alined with the tapped holes in the top of the cylinder block Install the lockscrews (12) and tighten them to 20 ft lb (27 Nm). (5) Install the camshaft (7) with the left-hand helix gear (1) through the opening on the left bank side in the rear end plate similarly to steps 1 thru 4 preceding. (6) Attach  a  new  gasket  (17)  to  the  camshaft  front  end  bearing  (15)  that  houses  oil  seal  (20).    Lubricate  the bearing journal with engine oil (item 17, Appendix B) and slide the bearing on the left bank camshaft with the bolting flange of the bearing toward the outer end of the shaft.  Secure the bearing (15) to the engine block using three bolts (13) and lockwashers (14).  Tighten the bolts to 40 ft lb (54 Nm). (7) Lubricate  the  right  bank  front  end  bearing  (15)  (the  bearing  without  the  seal)  using  engine  oil  (item  17, Appendix B).  Slide the bearing on the right bank camshaft and secure it to the engine block using three bolts (13) and lockwashers (14).  Tighten the bolts to 40 ft lb (54 Nm). (8) Select  the  spacer  (11)  with  the  polished  outside  diameter.    Lubricate  the  spacer  with  engine  oil  (item  17, Appendix B) and slide it in place on the left bank camshaft (7). (9) Install the other spacer (1 1) on the right bank camshaft (6).  Only the polished spacer is available for service and may be used in either position. (10) Install a woodruff key (10) in each camshaft (6 and 7). (11) Install the pulley (8) on the front end of the left bank camshaft (7), and install the water pump drive gear (9) (with external weight securely attached) to the right bank camshaft (6). (12) Install an internal tooth lockwasher on the front end of each camshaft (6 and 7) and thread retaining nuts (5) on the camshafts. (13) Wedge a clean rag between the camshaft gears (1 and 4) to prevent their turning.  Tighten the retaining nuts (5) on each end of both camshafts to 325 ft lb (441 Nm). (14) Install the camshaft gear nut retainers (3) using bolts (2) and lockwashers.  Tighten the bolts to 39 ft lb (53 Nm). 3-160

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