DRIVE GP-FAN 7N8849 - Caterpillar

Timing Gears For Front Of Engine
(1) Gear for inlet camshaft:(2) Gear for exhaust camshaft:(3) 2S2812 Idler Gear for camshaft (in head): Inside diameter of the bearing in the gear ... 2.1308 .0019 in.(54.122 0.048 mm)Diameter of the shaft for the gear ... 2.1268 .0005 in.(54.021 0.013 mm)Clearance between the shaft and the bearing ... .0016 to .0064 in.(0.041 to 0.163 mm)(4) 5S502 Idler Gear: Inside diameter of the bearing in the gear ... 3.2510 .0019 in.(82.575 0.048 mm)Diameter of the shaft for the gear ... 3.2470 .0005 in.(82.474 0.013 mm)Clearance between the shaft and the bearing ... .0016 to .0064 in.(0.041 to 0.163 mm)(5) 5S1096 Cluster Gear: Inside diameter of the bearing in the gear ... 1.5065 .0019 in.(38.265 0.048 mm)Diameter of the shaft for the gear ... 1.5025 .0005 in.(38.164 0.013 mm)Clearance between the shaft and the bearing ... .0051 to .0099 in.(0.130 to 0.251 mm)(6) 5S508 Crankshaft Gear.
LOCATION OF TIMING MARKS Timing mark (V mark) on tooth of crankshaft gear (6) must be in alignment with the timing mark (V mark) between the teeth on cluster gear (5) as shown.(7) 2S4142 Idler Gear for the water pump: Inside diameter of the bearing in the gear ... 2.022 .0012 in.(51.36 0.030 mm)Diameter of the shaft for the gear ... 1.9975 .0005 in.(50.737 0.013 mm)Clearance between the shaft and the bearing ... .0030 to .0064 in.(.076 to 0.163 mm)(8) 5S482 Drive Gear for the water pump.Timing Gears For The Rear Of The Engine
(9) Gear for inlet camshaft:(10) Gear for exhaust camshaft:(11) 2S2812 Idler Gear for camshaft (in head): Inside diameter of the bearing in the gear ... 2.1308 .0019 in.(54.122 0.048 mm)Diameter of the shaft for the gear ... 2.1268 .0005 in.(54.021 0.013 mm)Clearance between the shaft and the bearing ... .0016 to .0064 in.(0.041 to 0.163 mm)(12) 2S1997 Drive gear for variable timing.(13) 5S1186 Idler Gear: Inside diameter of bearing in gear ... 3.2510 .0019 in.(82.575 0.048 mm)Diameter of the shaft for the gear ... 3.2470 .0005 in.(82.474 0.013 mm)Clearance between the shaft and the bearing ... .0016 to .0064 in.(0.041 to 0.163 mm)(14) 7S9748 Cluster Gear: Inside diameter of the bearing in the gear ... 2.5000 .0019 in.(63.500 0.048 mm)Diameter of the shaft for the gear ... 2.4961 .0005 in.(63.401 0.013 mm)Clearance between the shaft and the bearing ... .0015 to .0063 in.(0.038 to 0.160 mm)(15) 1N8081 Drive Gear for air compressor.(16) 7S9745 Crankshaft Gear.
LOCATION OF TIMING MARKS Timing mark (V mark) on tooth of cluster gear (14) must be in alignment with the timing mark (V mark) between the teeth on crankshaft gear (16) as shown.(17) 7S3176 Idler Gear for the oil pump: Inside diameter of the bearing in the gear ... 1.5015 .0019