G379, G398 & G399 ENGINES Caterpillar


Governor

Usage:

(1) 2S7235 Spring for collar guide.

Length under test force ... 9.53 mm (.375 in.)

Test force ... 1.8 ± 0.1 N (.39 ± .03 lb.)

Free length after test ... 17.3 mm (.68 in.)

Outside diameter ... 10.80 mm (.425 in.)

(2) Torque for nut ... 12 ± 4 N·m (9 ± 3 lb ft)

(3) Torque for plug ... 38 ± 7 N·m (27 ± 5 lb ft)

7M7244 Spring for speed limiter.

Length under test force ... 12.4 mm (.49 in.)

Test force ... 6.6 ± 0.62 N (1.48 ± .14 lb.)

Free length after test ... 50.8 mm (2.00 in.)

Outside diameter ... 12.88 mm (.507 in.)

(4) 8M9141 Spring for governor.

Color code is ... one purple stripe

Put force on spring of ... 18 N (4.00 lb.)

Then add more force to make spring shorter by ... 22.86 mm (.900 in.)

Test force ... 66.0 ± 2.2 N (14.8 ± .5 lb.)

Free length after test ... 59.4 ± 1.0 mm (2.34 ± .04 in.)

Outside diameter ... 34.82 mm (1.371 in.)

(5) 9M6303 Spring.

Length under test force ... 4.57 mm (.180 in.)

Test force ... 45 ± 4 N (10.0 ± 1.0 lb.)

Free length after test ... 8.74 mm (.344 in.)

Outside diameter ... 12.19 mm (.480 in.)

(6) Torque for bolt ... 12 ± 4 N·m (9 ± 3 lb ft)

(7) Bypass valve.

Torque for bypass valve and plug on opposite side ... 38 ± 4 N·m (27 ± 3 lb ft)

NOTE: For engines that have standard rotation, the bypass valve is installed on the side with the governor control lever. For engines that have opposite rotation, the bypass valve is installed on the side opposite the governor control lever.

7L8696 Spring for bypass valve.

Length under test force ... 28.7 mm (1.13 in.)

Test force ... 32.1 ± 1.8 N (7.22 ± .4 lb.)

Free length after test ... 34.80 ± 0.25 mm (1.370 ± .010 in.)

Outside diameter ... 7.37 mm (.290 in.)

(8) Distance the bearing extends ... 11.94 ± 0.13 mm (.470 ± .005 in.)

(9) Outside diameter of bearing ... 20.599 ± 0.008 mm (.8110 ± .0003 in.)

Inside diameter of gear ... 20.650 ± 0.013 mm (.8130 ± .0005 in.)

(10) Height of gears ... 6.350 ± 0.008 mm (.2500 ± .0003 in.)

Depth of counterbore ... 6.388 ± 0.008 mm (.2515 ± .0003 in.)

(11) Outside diameter of shaft ... 17.424 ± 0.013 mm (.6860 ± .0005 in.)

Diameter of bore ... 17.475 ± 0.013 mm (.6880 ± .0005 in.)

(12) Outside diameter of pin ... 15.837 ± 0.013 mm (.6235 ± .0005 in.)

Diameter of bore ... 15.888 ± 0.013 mm (.6255 ± .0005 in.)

(13) Shaft end play ... 0.5 to 1.5 mm (.02 to .06 in.)

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