TM 9-2910-226-34 3-56. Precalibration Adjustments. a. Remove nozzle tester hose and fittings from hydraulic head inlet elbow. Remove nozzle tester from test stand. Remove improvised adapter. b. Remove fuel density compensator. On code G pumps only, remove governor cover. c. Set the smoke limit torque cam angle in ac- cordance with table 3-8. Smoke limit torque cam angle is the angle measured from the cam nose to the fulcrum lever (fig. 3-73). d. Back out both idle speed screws, flush with the bottom of lug. e. Remove the governor housing end cover, inner and outer governor springs and spacers. Remove the gasket and discard unless a new, untorqued gasket was used, f. Position the operating lever in the low-idle position. Hold with a spring. g. Using a depth micrometer, measure and record the distance between the governor housing and the governor sliding sleeve. h. Position the operating lever in the full-fuel position. Hold with a spring. i. Again using the depth micrometer, measure and record the distance between the governor housing and the sliding sleeve. A reading of 0.630 inch is required for full sliding sleeve travel. If specification is not attained, internal interference to the governor components or control sleeve is in- dicated. j. Position the operating lever in the low-idle fuel position. Hold with a spring. k. Install the outer spring spacers and outer spring on the governor gap gage, 4910-793-5040. NOTE Do not install the gasket since the gage is designed to compensate for gasket thickness. l. Install the outer spring spacers and governor gap gage in the governor housing until the gage just touches the spring (fig, 3-144). Using feeler gages, measure the distance between the gage and the governor housing. Add or remove spacers until the correct dimension in figure 3-144 is attained. m. Remove the outer spring and spacer from the gage and install on the governor end cover. n. Install the inner spring and spacer on the gage and install in the governor housing (fig. 3-145). With the gage flush with the governor housing, measure the distance between the inner spring spacer and the gage. Add or remove spacers until the correct dimension shown in figure 3-145 is attained. o. Remove the inner spring and spacer from the gage and install on the governor end cover. p. Using a new gasket, install the governor end cover, inner and outer springs and spacers in the governor housing. Torque bolts to 50-60 lb. in. q. Reinstall fuel density compensator using new gasket. Torque the four ¼ inch bolts to 75-100 inch- pounds. Reinstall fuel line between fuel density compensator inlet tee and hydraulic head inlet. On code G pumps only, reinstall governor cover. 3-57. Preparation for Calibration. NOTE a. The key letters shown below in parentheses refer to figures 3-163, 3-169, and 3-170 unless otherwise indicated. Remove the ¼ inch pipe plug from the hydraulic head outlet port and install the overflow valve. Remove socket head pipe plug from the rear of the governor housing (code A, B, E and F pumps). b. Connect compensator to overflow valve tube assembly at the valve. Install tube assembly from compensator inlet tee to the elbow in the hydraulic head. Install timing window cover, or solenoid housing assembly (para 3-47). Torque socket head capscrew securing the solenoid housing assembly to 110-120 inch-pounds. Install timing device cover, using a new gasket, and secure with retaining bolts and lockwashers. d. Install test stand-to-pump hoses. Refer to figures 3-163, 3-169 and 3-170. c. 3-101