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BOSS AS 4416121 - Caterpillar



4416121 BOSS AS Caterpillar parts BOSS
Rating:
86
Alternative (cross code) number:
CA4416121
441-6121
4416121
Caterpillar 4416121 BOSS AS

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Illustration 1 g01277444
Oil pump for balancer
Illustration 2 g01277446
Inner rotor
Illustration 3 g01277448
End play for rotor assembly
Table 1
Callout Quantity Part Specification Description
1 - - Clearance of the outer rotor to the body 0.130 to 0.24 mm (0.0050 to 0.0094 inch)
2 - - Clearance of inner rotor to outer rotor 0.050 to 0.200 mm (0.0020 to 0.0079 inch)
3 - End play of rotor Inner rotor 0.04 to 0.11 mm (0.0016 to 0.0043 inch)
3 - End play of rotor Outer rotor 0.04 to 0.00 mm (0.0016 to 0.0043 inch)
Illustration 4 g01277449
End cover
Illustration 5 g01277450
Idler gear and pump gear
Table 2
Callout Quantity Part Specification Description
4 - - Torque for cover bolts for oil pump. 26 N m (19 lb ft)
- - - Replace the idler gear bolt (5) and the nut for the oil pump gear (6).
5 - - Tighten the idler gear bolt to the following torque. 26 N m (19 lb ft)
- - - Set the engine to the TC position. Refer to Testing and Adjusting , "Finding Top Center Position for No. 1 Piston". Install the balancer. Refer to the Disassembly and Assembly manual. Install the gear for the oil pump and tighten the nut (6).
6 - - Tighten the nut to the following torque. 95 N m (70 lb ft)
- - - Tighten the bolts that hold the balancer to the cylinder block to the following torque. 54 N m (40 lb ft) Engines without Balancer Group
Type ... Gear-driven differential rotorNumber of lobes Inner rotor ... 5Outer rotor ... 6
Illustration 6 g01277453
Oil pump
Illustration 7 g01277455
Checking clearance
Illustration 8 g01277457
Checking end play
Table 3
Callout Quantity Part Specification Description
7 - - Clearance of the outer rotor to the body 0.152 to 0.330 mm (0.0059 to 0.0129 inch)
8 - - Clearance of inner rotor to outer rotor 0.040 to 0.127 mm (0.0015 to 0.0050 inch)
9 - End play of rotor assembly Inner rotor 0.038 to 0.089 mm (0.0014 to 0.0035 inch)
9 - End play of rotor assembly Outer rotor 0.025 to 0.076 mm (0.0010 to 0.0029 inch)
- - - Tighten the bolts that hold the front cover of the oil pump assembly to the following torque. 26 N m (19 lb ft)


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