D399, G399, D398, G398, D379, G379 ENGINES Caterpillar


Governor; (7L8787, 8L5814 and 7L4352)

Usage:



(1) 8M9141 Spring for governor high idle:

Load under force of ... 6.30 lb.(2,85 kg)

Then compress an additional ... .370 in.(9,398 mm)

Total test force reading ... 10.75 ± .20 lb.(4,88 ± 0,09 kg)

Free length after test ... 2.340 ± .030 in.(59,44 ± 0,76 mm)

Outside diameter ... 1.371 ± .015 in.(34,82 ± 0,38 mm)

(2) Torque for locknut ... 11 ± 1 lb. ft.(1,52 ± 0,14 mkg)

NOTE: On natural gas engines, adjustment of stop screw should limit governor stop collar travel to .605 in. (15,37 mm) from fuel off position.

(3) 8M6303 Spring for inner thrust:

Length under test force ... .18 in.(4,57 mm)

Test force ... 9.5-10.5 lbs.(4,3-4,7 kg)

Free length after test ... .344 in.(8,74 mm)

Outside diameter ... .478-.482 in.(12,14-12,24 mm)

(4) Torque for 3/8 in. nut ... 36-48 lb. in.(41,5-55,3 cm.kg)

Torque for 1/4 in. bolt ... 6-12 lb. ft.(0,83-1,66 mkg)

(5) Diameter of pump shaft bearing upper journal ... .6265-.6271 in.(15,913-15,928 mm)

Bore in the cover ... .6313-.6323 in.(16,035-16,060 mm)

(6) Distance bearing extends ... .465-.475 in.(11,81-12,06 mm)

(7) Clearance between pump gear and cover ... .0009-.0021 in.(0,023-0,053 mm)

(8) Diameter of new idler gear bearing ... .8107-.8113 in.(20,592-20,608 mm)

Bore in new pump idler gear ... .8125-.8135 in.(20,638-20,663 mm)

(9) Diameter of new drive shaft lower journals ... .6855-.6865 in.(17,411-17,437 mm)

Bore in the housing ... .6875-.6885 in.(17,462-17,488 mm)

(10) Shaft end play ... .02-.06 in.(0,5-1,5 mm)

Caterpillar Information System:

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