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INSPECTION (cont
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TM-5-4210-220-34 Truck Firefiighting 1000 GPM Multipurpose Model 2500L Manual
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INSTALLATION - TM-5-4210-220-34_468
TM 5-4210-220-34 3-8. ENGINE - Continued (5) To remove the sleeve, peen the outside diameter until the sleeve stretches sufficiently so it can be slipped off the end of the crankshaft. (6)     To install a sleeve, stone the high spots from the contact surface.  Coat the shaft with shellac or an equivalent sealant and press the sleeve on the shaft using installer J21983 with guide studs J25002 and driver handle J8092 as required.  Then wipe off any excess sealant.  An oversize seal must be used with a sleeve. (7)     Check the oil pump drive gear (8) and the crankshaft timing gear (12) for worn or chipped teeth. Replace as required.  For oil pump, see para.  2-19.10.  For timing gear, see para.  3-8.7. (8)     Check the crankshaft thrust surface for excessive wear or grooving.  If excessively worn, the crankshaft must be replaced.  Oversize thrust washers are available in sizes 0.005 in.  (0.13 mm) and 0.010 in.  (0.25 mm). (9)     If there is any sign of wear on the crankshaft, the crankshaft must be measured against specification.  A worn crankshaft must be replaced. (10)  Support the crankshaft on No.  1 and No.  4 main journals in V-blocks.  Measure the total runout on journals No.  2 and No.  3, the runout on each journal must be less than 0.002 in.  (0.05 mm). (11)  If the high spots of runout on adjacent journals Is  in  the  same  or  opposite  directions,  total  runout  must  not exceed 0.003 in.  (0.08 mm).  If the total runout on adjacent bearings is at right angles to each other, total runout must not exceed 0.004 in.  (0.10 mm). (12)  If runout specifications are exceeded, the crankshaft must be replaced. (13)  Measure    the    main    and    connecting    rod journals In several places on the circumference  so  that  taper,  out-of-round, and bearing clearances can be determined. (14)  The crankshaft must be replaced if: •    Any  main  bearing  taper  exceeds  0.0004 in.  (0.010 mm). •  Any  main bearing  out-of-round  exceeds 0.0005 in.  (0.013 mm). •        Any    connecting    rod    bearing    taper exceeds 0.0004 in.  (0.010 mm). •  Any connecting  rod  bearing  out-of-round exceeds     0.0005     in.          (0.013mm).Main journal-to-bearing clearance exceeds 0.0055 in.  (0.013 mm). •  Connecting rod journal-to-bearing clearance exceeds 0.0045 in.  mm). 3-177

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