129. Magneto
c. Disassembly.
(1) Remove the screw assembly (4, fig.36) and capacitor (5) from the end cover (2).
(2) Remove the preformed packing (6) from the capacitor (5).
(3) Remove the machine screw assemblies (1), end cover (2) and gasket (3) from the cap (18).
(4) Remove the machine screw assemblies (7) and distributor (9) from the end cover (2).
(5) Remove the radio suppression tube (10) from the distributor (9) and slide the radio suppression
element (11) and spring (12) out of the tube (10).
(6) Remove the screw (20), hood vent (21) and wire fabric 23) from the cap (18).
(7) Remove the primary ground nut (24), ground button (25) and primary ground assembly (26 through
29) from the cap (18).
(8) Remove the nut (30), ground wire (35), ground clip (36), fiber plate (37) and machine screw (32)
from the cap (18).
(9) Remove the machine screw assembly (17), cap (18) and gasket (19) from the housing (83).
(10) Pull rotor (14) off the rotor shaft (70).
(11) Remove the screw (54) that secures the ground wire on the high tension coil (53) and breaker arm
support bracket (50) to the clip (55).
(12) Remove the screw (15), ground clip (40), and ground wire (16) from the point plate (50).
(13) Remove the fulcrum pin and snap ring (42), and lift the breaker arm support bracket (50) from the
point plate (71).
(14) Remove the screws (48), oil wick (47) and contact set (44) from the point plate (50), and lift the
point plate (50) out of the housing (83).
(15) Remove the machine screw (75), coil cover (76) and vent screen (77) from the housing (83).
(16) Remove the setscrews (52) and slide the coil (53) out of the housing (83).
(17) Remove the special screw (54) and clip (55) from the coil (53).
(18) Remove the cotter pin (56), nut (57),gear (58) and bushing (59) from the rotor shaft (70).
(19) Remove the impulse coupling shell (64), impulse coupling assembly (62) and woodruff key (60)
from the rotor shaft (70) and remove the impulse coupling spring (63) from the impulsecoupling
shell (64).
(20) Remove the stop pins (79 and 80) by unscrewing them from the housing (83).
(21) Slide the rotor shaft (70) out of the housing (83).
(22) Remove the snapring (81) and press the bearing out of the housing (83).
(23) Remove the snapring (69) from the rotor shaft and remove the outer washer (68), oil seal (67) and
inner washer (66) from the housing (83).
(24) Remove the bearing retainer (65) out of the housing (83).
(25) Remove the inner race from the rotor shaft (70).
(26) Remove the bearing grease retainer (73) and bearing (74) from the point plate (71).
d. Cleaning, Inspection, and Repair.
(1) Clean all parts with an approved cleaning solvent.
(2) Inspect all mounting hardware for damage. Replace damaged parts as necessary.
AGO 6871A
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