TM 9-2910-226-34 d. plus At any position of equilibrium the spring load the servo pressure is equal to regulator pressure. The diaphragm (fig. 1-28) or piston (fig. 1- 29) is connected by linkage to a wedge-shaped movable block which serves to vary the position of the full-load cam in the injection pump. Proper selection of the full-load stop wedge angle and servo diaphragm or piston spring rate produces the amount of compensation required to maintain constant power output over a range of fuels. e. These fuel density compensators are man- ufactured to provide the fuel compensation for the multifuel engines. Each fuel injection pump must be constructed for the particular engine for which it is designed. f. Code G injection pumps are not equipped with a fuel density compensator. They have a stationary stop plate and bridge assembly attached to the governor housing (fig. 1-30). The stop plate and bridge assembly accomplishes the same function as the compensator stop plate except it does not compensate for various viscosity fuels. 1-28. Fuel Injection Pump Data. Manufacturer . Model . . . . . . . . . . . . . . . . . . . . . . . . ... . . . . . . . . . . . . . . . . . Figure 1-30. Stop plate and bridge assembly (code G). American Bosch Division PSB-6A Length . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17.75 in. (approx) Width.. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6.50 in. (approx) Height: 2910-178-1185 (code A) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11.50 in. (approx) 2910 -759 -5419 (code Canal D). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11.50in. (approx) 2910 -103 -2644 (code E) . . . . . . .. . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . 11.50 in. (approx) 2910-017-9778 (early code F). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . 12.87 in. (approx) 2910-908-6320 (code Band late code F) . . . . . . . . . . . . . . . . . . . . . . . . 11.50in. (approx) 2910-860-2333 (early code G) . . . . . . . . . . . . . . . 9.7in. (approx) 2910-968-6317 (late code G). . . . . . . . . . . . . . . . . . . 9.7 in. (approx) Name plate location. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Top left side of governor housing Mounting data: Number of mounting holes 3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Diameter mounting holes . . . . . . . . . . . . . . . . . . . . . . . 0.406 Governor speed range (on DF-1 fuel): Idle Full load 2910-178-1185 (code A) . . . . . . . . . . . . . . . . 650-700 2800 2910-759-5410 (code C and D) . . . . . . . . . . . . . . . . . . . . . . . . 650-700 2600 2910-103-2644 (code E) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 650-700 2600 2910-017-9778 (early code F) . . . . . . . . . . . . . . . . . . . . . . . . . . . 650-700 2600 2910-908-6320 (code Band late code’ F) . . . . . . . . . . . . . . . . . . . . . . . 650-700 2600 2910-860-2333 (early code G). . . . . . . . . . . . . 550-600 2800 2910-968 -6317 (late code G) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 550-600 2800 Rotation (viewed from drive end) . . . . . . . . . . . . . . . . . . . . . . . . . Clockwise Fuel injection sequence. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1, 5, 3, 6, 2, 4 Delivery valve opening pressure . . . . . . . . . . . . . . . . . . . . 250-400 psi Overflow pressure . . . . . . . . . . . . . . . . . . . . 5 psi max. Fuel pressures, minimum (after final filter): 700 RPM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30 psi min. 2600 RPM 60 psi min. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Fuel density compensate (all except 2910-860-2333 and 2910-968-6317 pumps): Pressure regulator valve setting (all fuels) . . . . . . . . . . . . . . . . . . . . . . . . . 20-21 psi 1-29. Differences Between Injector Pumps. Table 1- the item in the description column is used on that 1 lists the major differences between the pumps used particular pump. on the various engines. An X in the column indicates 1-31