TM 5-4240-501-14&PStarter motor armatures have very low resistance.Usually below detection on available multimeters (volts-amperes- ohms). To check for shorted armatures, apiece of equipment known as a "growler" may be used.If this equipment is not available, a known good armatureshould be used and performance checked.If the magnets are suspect, a new motor housing shouldbe tried to test motor performance.ASSEMBLY OF STARTER MOTORWhen all parts have been thoroughly inspected, lightlylubricate bearings with a #20 oil and reassemble in thefollowing manner.Insert brush springs and brushes in holders as far aspossible, and hold them in this position with tool shown inFig. 59. Place thrust washers on armature shaft, usingcare to insure brushes clear commutator, slide armatureshaft into end cap bearing. See Fig. 59.Fig. 59 - Assembling Armature to End CapSupport armature shaft and slide it slowly into starterhousing, as shown in Fig. 60. Insert rubber mountedterminal into starter, housing at this time.STARTERSNicad SystemFig. 60 -- Inserting ArmaturePlace remaining thrust washers on motor PTO shaft,install end head cover and thru bolts. Notches in endcap, housing and end head must be aligned. Fig. 60.Check for end play to be sure armature is free. Slippinion and starter motor clutch gear on shaft, add a smallamount of gear lubricant to gears and install gear coverand gasket. Fig. 61.Fig. 61 - Lubricating GearsTap end cap edge lightly using a soft hammer as this willalign the bearings. See Fig. 62.Fig. 62 - Aligning End Cap BearingReplace nylon spur gear and retainer assembly. tightenretainer screws securely. NOTE: Do not oil nylon spurgear or clutch helix. Install starter cover. The startermotor assembly is now readyfor re-installation to the engine.15
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