TM 5-3805-260-24(1)Diameter of the surfaces (journals)for the camshaft bearings(new)...................... ............2 500 0005 in (63 500 0 013 mm)Bore In the live bearings for thecamshaft (new) ......2.5035 0015 in (63 589 0 038 mm)Maximum permissible clearance between bearing andbearing surface journal) (, worn).007 in (0 18 mm)(2)Tight fit between the gearand camshaft .........0012 to 0028 in (0 030 to 0 071 mm)Maximum permissible temperatureof the gear for Installation onthe camshaft (do not use a torch)600 F (315 C)(3)End play for the camshaft..007 003 in ( 18 08 mm)Maximum permissible end play (worn) 020 In (0 51 mm)(4)Width of thrust groove incamshaft (new) ......360 002 in (9 14 0 05 mm)Diameter of thrustpin (new) I.............. ............353 001 in (8.97 0 03 mm)Torque for thrust pin- ..........35 5 lb ft (45 7 N m)NOTE For installation of camshaft. The timing mark or the camshaftgear tooth must be in alignment withthe timing mark on the toothspace of the crankshaft gear(5)Height of camshaft lobesTo find lobe lift, use the following procedureA.Measure camshaft lobe height (5)B.Measure base circle (7)C.Subtract base circle (STEP 8) from lobe height (STEP A) Thedifference Is actual lobe lift (6)D.Specified camshaft lobe lift (6) isa. Exhaust lobe..... ............3071 in (7 800 mm)b. Intake lobe ........ ............3077 in (7.816 mm)Maximum permissible difference between actual lobe lift (STEP C)and specified lobe lift (STEP D) is 010 in (0 25 mm)1-11
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