TM 9-2910-226-34 3-8. Removal of Fuel Control Unit Assembly. Refer to figure 3-6. Remove retaining pin (A). Cut locking wire (B) and remove two screws and lockwashers (C). Remove control unit retainer (D) and fuel control unit assembly (E). Figure 3-6. Removing fuel control unit assembly. 3-9. Removal of Fuel Density Compensator Assembly and Governor Cover and Stop Plate and Bridge. a. General The fuel density compensator assembly is mounted above the governor housing. A hose or tube (A, fig. 3-7) connects the density compensator to the hydraulic head and carries fuel under pressure to the head. Excess or overflow fuel is carried from the density compensator to the overflow valve assembly by a tube (B). Figure 3-7. Removing fuel density compensator (early code F pumps). b. Removal of Compensators. (1) Early code F injection pump. Refer to figure 3-7. Remove hose assembly (A) and tube (B) from tees and elbows. Remove and discard locking wire and seal (C). Remove four capscrews (D), lock- washers (E), tamper proof cover (F) and spacers (G) securing compensator to governor housing. Tap fuel density compensator (H) with a soft hammer to break gasket seal and remove fuel density com- 3-3