ARMY TM 9-2815-255-24
AIR FORCE TO 38G1-95-2
MARINE CORPS TM 2815-24/4
Install gasket (68) and piston ring (67) on advance piston (66).
Install advance piston (66) in plug (65).
Install piston and plug in side of housing on side marked C'.
Align advance pin hole in advance piston with unthreaded hole in cam ring. Install advance pin (69).
Install seal (55) on advance screw hole plug (54). Install plug.
If necessary, install new performed packings (60 and 61), screw (62), seal (63), and nut (64) in plug (56).
Insert advance adjustment screw guide (59) in plug (56) with step facing spring.
Insert springs (57 and 58) in plug (56). Install plug (56) with inserted components into housing.
Tighten advance piston hole plugs (56 and 65) 18 to 22 ft-lbs (24.4 to 29.8 Nm).
Tighten plug (54) 40 to 60 in-bs (4.5 to 6.8 Nm).
Invert pump and fixture in vise.
Hold throttle lever (19) in wide open position and rotate drive shaft clockwise until a slight click is heard as toes
of governor arm (44) engage slots in thrust sleeve (19, FIGURE 3-52).
Never back out low Idle screw (38, FIGURE 3-45) or disengagement of throttle lever (19) from
guide bushing could result.
With throttle lever (19) held in wide open position, use linkage gage (18914) to check clearance between rear of
shutoff shaft (30) and vertical tab on linkage hook (46), refer to FIGURE 3-85. Clearance should be 0.125 to
0.145 inch (3.175 to 3.683 mm). Adjustment of this clearance is made using a 1/4 inch wrench to change
effective length of linkage hook.
FIGURE 3-85. Checking Clearance at Linkage Hook
Use wrench and loosen adjusting screw (74, FIGURE 3-45). Slide linkage to maximum open length.
Insert linkage gage as above and slide linkage hook (46) together from rear until face of tab is flush against
Tighten screw (74) and recheck adjustment.
Cam should snap into position when installed correctly.