(2) Check that the timing line on the governorweight retainer hub is opposite the line on the pumpcam.(3) Disconnect all fuel lines and plug all open-ings.(4) Disconnect throttle and shut-off linkage anddisconnect electrical leads from solenoid.(5) Remove mounting nuts on the pump flange.(6) Slide pump gently from location. Be care-ful not to damage the pilot tube by cocking pump onremoval.c. Disassembly.Disassemble the pump in thenumerical sequence illustrated in figure 14-21 payingparticular attention to the followingCAUTIONNever clamp the pump in a vice withoutusing the fixture.(1) Mount pump in holding fixture and secure invice.(2) Remove three screws (1) and remove cover(4). Set cover containing solenoid aside for laterdisassembly.Refer to paragraph 14-46.(3) Rotate shut-off lever (21 ) to full off position;pry gently between housing and linkage hook (45) andremove shut-off cam (25).(4) Partially withdraw throttle shaft assembly(26) and lift out throttle shaft lever (40), spacers andgovernor arm damper barrel assembly (86). Re-move throttle shaft and shut-off shaft assemblies (24).(5) Hold metering valve (93) and arm assembly(91 ) down and lift linkage hook (45) from meteringvalve arm pin (91 ). Disengage hook from governorarm (86). Do not separate linkage hook from springunless necessary to replace one of these parts.(6) Remove the end plate assembly (58). Re-move the speed droop adjusting cap (73) by pulling tothe rear of the pump.With a pair of needle nose pli-ers, remove the control rod clip (78).CAUTIONDo not bend the control rod.Loosen and remove the control rod guide (75), O ring(77) and guide washer (76). Disengage the governorspring (80) from the governor arm (86) and removethe governor spring (80) and control rod assembly(79) as a unit.(7) Remove metering valve (93) and armassembly (91) from hydraulic head.NOTEMetering valve is shimmed to reducevertical play. If valve, arm or head,and rotor assembly are not replaced,save shims and spacer for reassembly.(8) Remove two head locking screws (146, 147)from pump housing (166).(9) Invert pump and holding fixture as a unit andremove head locating screw (103), advance screwhole plug (100), and remove advance pin (102).(10) Remove the power piston plug (111 ) and ad-vance spring components (97-113) as an assembly.Disassemble by removing cap (115) and loosening jamnut (114) and back trimmer screw (11 2) completely in.Slide the piston (99) out of the plug (do not turn pistoninside of plug).Remove the retaining ring (110) fromthe piston (99) and remove spring (108) and trimmerscrew (112).NOTEThe sides of the housing just above theadvance bears a “C” denoting clock-wise pump rotation as viewed from thedrive end. The power side of the pis-ton is located on the “C” side of aclockwise rotation pump.(11 ) Invert the holding fixture in the vise. Graspthe hydraulic head assembly firmly in both hands andwithdraw with a slight rotary motion. Use cautionnot to drop the governor weights (116).(12) To disassemble the governor, invert thehydraulic head and rotor assembly (145) and letweights (116), governor thrust sleeve (117), and gov-ernor thrust sleeve wahser (118) fall into your hand.(13) Place the hydraulic head assembly on pumpholding fixture so that the governor weight retainer(123) engages the bar on the fixture.(14) Remove the pressure regulating sleeve (49)from end plate (59). Slide off the inlet screen (51).Remove the adjusting plug (48). Shake out the regu-lating spring (54) and piston (55). Reverse theassembly and remove the regulating piston seal (56).(15) To disassemble transfer pump, lift outtransfer pump seal (71 ), liner (72) and blades (67-70),and springs (65, 66).(16) Using a 5/32 inch Allen wrench, loosen thedelivery valve retainer screw (138) and remove it.(17) Lift head and rotor assembly and shake de-livery valve stop (139), spring (140), and deliveryvalve (141 ) into the hand.(18) Using a small-bladed screwdriver or a dull14-37
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