COMPRESSOR GP- 4C6726 - Caterpillar

(1) Spacer block.(2) Thrust pin. Tighten pin to a torque of ... 48 7 N m (35 5 lb ft)(3) Gear. Maximum temperature of gear when shrinking in place ... 300°C (572°F)(4) Camshaft. Diameter of camshaft journals (new) ... 74.850 0.025 mm (2.9470 .0010 in)(5) Key.(6) Camshaft journal (rear). Diameter of camshaft journals (new) ... 74.815 0.025 mm (2.9450 .0010 in) Assemble with journal part no. and "rear" on this side. Maximum temperature of journal when shrinking in place is 300°C (572°F).(7) Gear. Maximum temperature of gear when shrinking in place ... 300°C (572°F).
(9) Height of camshaft lobes.
Typical example exhaust, intake and injector lobes.To find lobe height, use the procedure that follows: a. Measure camshaft lobe height (9).b. Measure base circle (10). Exhaust ... 55.0 0.4 mm (2.17 .02 in)Intake ... 51.0 0.4 mm (2.01 .02 in)c. Subtract base circle (Step b) from lobe height (Step a). The difference is actual lobe (11).d. Specified camshaft lobe lift is: Exhaust lobe ... 9.550 mm (.3760 in)Intake lobe ... 11.371 mm (.4480 in)Injector lobe ... 10.474 mm (.4124 in)Minimum permissible difference between actual lobe lift (Step C) and specified lobe lift (Step D) is ... 0.13 mm (.005 in)