3406 INDUSTRIAL & MARINE ENGINES Caterpillar


Woodward PSG Governor

Usage:

(6N9731)

(1) Torque for sleeves ... 30 lb. ft.(40 N·m)

(2) Governor oil pump relief valve must open at ... 175 psi(1200 kPa)

(3) Synchronizing motor rating ... 24 V

(4) Adjust clutch assembly to slip at ... 6.0 ± .5 lb. in.(0.7 ± 0.06N·m)

(5) 3N5723 Return Spring:

Free length ... 4.13 to 4.25 in.(104.9 to 108.0 mm)

Outside diameter ... .995 to 1.015 in.(25.27 to 25.78 mm)

(6) Torque for nut on pilot valve ... 70 lb. in.(8 N·m)

(7) Flyweight rotation as seen from the top ... counterclockwise

(8) 2N1021 Speeder Spring and Fork Assembly:

Free length ... .97 to 1.03 in.(24.6 to 26.2 mm)

Outside diameter (large end) ... .952 ± .010 in.(24.18 ± 0.25 mm)

(9) Diameter of the power piston (new) ... .8584 to .8589 in.(21.803 to 21.816 mm)

Bore in the bushing (new) ... .8594 to .8599 in.(21.829 to 21.841 mm)

(10) Diameter of five pilot valve lands (new) ... .2490 to .2495 in.(6.325 to 6.337 mm)

Bore for pilot valve lands (new) ... .2500 to .2505 in.(6.350 to 6.363 mm)

(11) Diameter of pilot valve bushing (new) ... .6239 to .6242 in.(15.847 to 15.855 mm)

Bore for pilot valve bushing (new) ... .6250 to .6254 in.(15.875 to 15.885 mm)

(12) 6L3990 Damper Springs:

Color Code ... one purple stripe

Free length ... 1.31 to 1.37 in.(33.3 to 34.8 mm)

Outside diameter (large end) ... .420 ± .010 in.(10.67 ± 0.25 mm)

(13) Depth of the counterbore ... .2630 to .2635 in.(6.680 to 6.693 mm)

Thickness of gears ... .2617 to .2622 in.(6.647 to 6.660 mm)

(14) Bore in oil pump idler gear ... .3045 to .3050 in.(7.734 to 7.747 mm)

Diameter of shaft ... .3035 to .3038 in.(7.709 to 7.717 mm)

Install the shaft with the oil hole as shown.

The distance between the top of the shaft and the bottom of the counterbore must be ... .252 to .254 in.(6.40 to 6.45 mm)

(4N6337 and 6N1460)

(1) Torque for sleeves ... 30 lb. ft.(40 N·m)

(2) Governor oil pump relief valve must open at ... 175 psi(1200 kPa)

(3) Synchronizing motor rating:

4N6337 ... 110V

6N1460 ... 24V

(4) Adjust clutch assembly to slip at ... 6.0 ± .5 lb. in.(0.7 ± 0.06 N·m)

(5) 3N5723 Return Spring:

Free length ... 4.13 to 4.25 in.(104.9 to 108.0 mm)

Outside diameter ... .995 to 1.015 in.(25.27 to 25.78 mm)

(6) Torque for nut on pilot valve ... 70 lb. in.(8 N·m)

(7) Flyweight rotation as seen from the top ... counterclockwise

(8) 2N1021 Speeder Spring and Fork Assembly:

Free length ... .97 to 1.03 in.(24.6 to 26.2 mm)

Outside diameter (large end) ... .950 ± .010 in.(24.13 ± 0.25 mm)

(9) Diameter of the power piston (new) ... .8584 to .8589 in.(21.803 to 21.816 mm)

Bore in the bushing (new) ... .8594 to .8599 in.(21.829 to 21.841 mm)

(10) Diameter of five pilot valve lands (new) ... .2490 to .2495 in.(6.325 to 6.337 mm)

Bore for pilot valve lands (new) ... .2500 to .2505 in.(6.350 to 6.363 mm)

(11) Diameter of pilot valve bushing (new) ... .6239 to 6242 in.(15.847 to 15.855 mm)

Bore for pilot valve bushing (new) ... .6250 to .6254 in.(15.875 to 15.885 mm)

(12) 6L3990 Damper Springs:

Color Code ... one purple stripe

Free length ... 1.31 to 1.37 in.(33.3 to 34.8 mm)

Outside diameter (large end) ... .420 ± .010 in.(10.67 ± 0.25 mm)

(13) Depth of the counterbore ... .2630 to .2635 in.(6.680 to 6.693 mm)

Thickness of gears ... .2617 to .2622 in.(6.647 to 6.660 mm)

(14) Bore in oil pump idler gear ... .3045 to .3050 in.(7.734 to 7.747 mm)

Diameter of shaft ... .3035 to .3038 in.(7.709 to 7.717 mm)

Install the shaft with the oil hole as shown.

The distance between the top of the shaft and the bottom of the counterbore must be ... .252 to .254 in.(6.40 to 6.45 mm)

(4N3222)

(1) Torque for sleeves ... 30 lb. ft.(40 N·m)

(2) Governor oil pump relief valve must open at ... 175 psi(1200 kPa)

(3) 3N5723 Return Spring:

Free length ... 4.13 to 4.25 in.(104.9 to 108.0 mm)

Outside diameter ... .995 to 1.015 in.(25.27 to 25.78 mm)

(4) Torque for nut on pilot valve ... 70 lb. in.(8 N·m)

(5) Flyweight rotation as seen from the top ... counterclockwise

(6) 2N1021 Speeder Spring and Fork Assembly:

Free length ... .97 to 1.03 in.(24.6 to 26.2 mm)

Outside diameter (large end) ... .950 ± .010 in.(24.13 ± 0.25 mm)

(7) Diameter of the power piston (new) ... .8584 to .8589 in.(21.803 to 21.816 mm)

Bore in the bushing (new) ... .8594 to .8599 in.(21.829 to 21.841 mm)

(8) Diameter of five pilot valve lands (new) ... .2490 to .2495 in.(6.325 to 6.337 mm)

Bore for pilot valve lands (new) ... .2500 to .2505 in.(6.350 to 6.363 mm)

(9) Diameter of pilot valve bushing (new) ... .6239 to .6242 in.(15.847 to 15.855 mm)

Bore for pilot valve bushing (new) ... .6250 to .6254 in.(15.875 to 15.885 mm)

(10) 6L3990 Damper Springs:

Color Code ... one purple stripe

Free length ... 1.31 ± 1.37 in.(33.3 to 34.8 mm)

Outside diameter (large end) ... .420 ± .010 in.(10.67 ± 0.25 mm)

(11) Depth of the counterbore ... .2630 to .2635 in.(6.680 to 6.693 mm)

Thickness of gears ... .2617 to .2622 in.(6.647 to 6.660 mm)

(12) Bore in oil pump idler gear ... .3045 to .3050 in.(7.734 to 7.747 mm)

Diameter of shaft ... .3035 to .3038 in.(7.709 to 7.717 mm)

Install the shaft with the oil hole as shown.

The distance between the top of the shaft and the bottom of the counterbore must be ... .252 to .254 in.(6.40 to 6.45 mm)

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