Air Motor Assembly; Handle And Trigger Assembly - Avdel 74405 Manuel D'instructions

M a i n t e n a n c e
A i r M o t o r A s s e m b l y
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Tap the Air Motor Casing 3 gently on the bench to remove the air motor assembly from the casing.
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Using circlip pliers*, remove Circlip 14.
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Remove Bearing 15 and Planet Gear Spindle 11, together with three Planets 16 from Planet Gear 10.
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Remove Planet Gear 10 and Spacer 17.
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Using a soft mallet, tap on splined head of Rotor 19 and remove Bearing 9 and Front End Plate 8.
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Tap out Rotor 19 and Rotor Blades 7, five off.
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Place Rear End Plate 20 in the vice and using a pin punch*, tap on centre of Rotor 19 to remove Bearing 21.
Take care not to lose Pin 6.
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Remove Bearing 21.
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Assemble in reverse order of dismantling, observing the following:
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Rear side of Rotor 19 must touch Rear End Plate 20 without any axial gap. Any existing gap will disappear when Bearing 21 is fully
located.
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When inserting the air motor assembly into Air Motor Casing 3, align components so that Pin 6 locates the centre hole between the
spin-on and spin-off ports of the air motor casing.
H a n d l e a n d Tr i g g e r A s s e m b l y
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Using a spanner, undo Lock Nut 35 and remove Trigger 34, 'O' Ring 36 and Spring 2 from Handle 28.
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Remove Screw 41 to release Emergency Spin-Off Button 40.
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Assemble in reverse order to dismantling.
*refers to items included in the 74405 Service Kit. For a complete list see page 11.
Item numbers in bold refer to the Base Tool General Assembly drawing and Parts List pages 16-17.
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