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P 8 / 12

R

epair

[3] -5. Gear Complete

[3] -6. Replacing Armature

Fig. 20

Fig. 21

Fig. 24

1) Separate gear housing from gear housing cover as described in 1) to 3) of [3] -3.
2) Remove two gear plates from gear housing by unscrewing four M5x14 torx countersunk head screws (adhesive-coated) 
    with Torx bit VT-25 (No.1R314) or Torx screwdriver T25H120 (No.1R327). (Fig. 20)
    Then remove gear complete from gear housing. (Fig. 21)

1) Remove carbon brushes, shoe and insulation cover.
2) Remove gear housing cover from gear housing as described
    in 1) to 3) of [3] -3.
3) Separate gear housing from motor housing by unscrewing
    four M5x35 tapping screws.
4) Remove baffle plate from gear housing. then remove 
    armature from gear housing by removing three M5x10 pan
    head screws (adhesive-coated) with impact driver. (Fig. 23
    In this step, ball bearing 6001DDW and bearing retainer are
    still assembled to armature.
     Note: Apply adhesive to three M5x10 pan head screws
               when assembling.

DISASSEMBLING

ASSEMBLING

3) Put gear complete on Pipe 30 (No.1R232), and place
    Round bar for arbor 16-100 (No.1R245) on needle
    bearing 1216.  And press out needle bearing 1216
    as illustrated in Fig. 22.

Do the reverse of the disassembling steps.
Note:
1. Before assembling gear complete to gear housing,
    apply about 1g of Makita grease N No.1 to flat washer 18
    and pin 12 respectively. ( Refer to Fig. 20.)
2. Apply adhesive to four M5x14 torx countersunk head screws.

Fig. 22

Fig. 23

Arbor press

No.1R245

Needle bearing 1216

Gear complete

No.1R232

Torx countersunk
head screw M5x14
(4 pcs)

Gear plate
(2 pcs)

Gear complete

Gear complete

Flat washer 18

Needle bearing 1216

Pin 12

5) Remove retaining ring S-12 from armature using Retaining ring S and R pliers (No.1R291), then ball bearing
    6001DDW using Bearing extractor (No.1R269).   Now bearing retainer can be removed from armature. (Fig. 24)

Bearing retainer

Ball bearing 6001DDW

Retaining ring S-12

Bearing retainer

Armature

Pan head screw M5x10 (3 pcs)

Summary of Contents for JR3050T

Page 1: ...els No Description PRODUCT Current A TECHNICAL INFORMATION CONCEPT AND MAIN APPLICATIONS Specification Standard equipment Optional accessories Note The standard equipment for the tool shown above may...

Page 2: ...he surface which contacts the hole on Guide sleeve 47 28 32 Gear housing 46 Three M5x10 Pan head screws Four M5x16 Pan head screws The portion where Gear complete and Armature gear rotate Threaded por...

Page 3: ...lder pin 5 Compression spring 6 Driving sleeve guide Pin 3 of 6mm length Guide sleeve Sleeve Protector Retaining ring S 18 4 While putting your finger on the top of slider to close the slit of slider...

Page 4: ...ure that push plate is not reversible when installed While pushing push plate straight into slider with recipro saw blade insert pin 3 of 19 8mm length through the hole of push plate as illustrated to...

Page 5: ...sing 1R291 Then cover driving sleeve with protector When installing driving sleeve fit its projections in the concavities of sleeve and driving sleeve guide Projections Concavities Driving sleeve Driv...

Page 6: ...ng in the direction designated by the gray arrow Fig 14 DISASSEMBLING ASSEMBLING Do the reverse of the disassembling steps 1 Apply Makita grease N No 1 to slider as illustrated in Fig 15 in order to l...

Page 7: ...ated in Fig 18 Important 1 Oil seal 14 is not reversible when assembled to gear housing cover Be sure to set it so that the rubber lip faces the blade side as illustrated in Fig 19 2 Install oil seal...

Page 8: ...mature Note Apply adhesive to three M5x10 pan head screws when assembling DISASSEMBLING ASSEMBLING 3 Put gear complete on Pipe 30 No 1R232 and place Round bar for arbor 16 100 No 1R245 on needle beari...

Page 9: ...d low voltage of Great Britain All other countries and areas Field Noise suppressor Field Field core Choke coil Choke coil Left Right Left Left Right Right Purple lead wire Orange lead wire Black Colo...

Page 10: ...ed portion Lead wire clear that interconnects between noise suppressor and field core Non insulated terminal Fig 25 Polyolefin heat shrink tube after shrinkage Before shrinkage After shrinkage 2 1 Fro...

Page 11: ...ween the opening and the lead wire holder Route the following lead wires through this opening Field lead wire orange Lead wire from choke coil to brush holder orange Two field lead wires black Opening...

Page 12: ...holder Be sure that lead wires are tight between the opening and the lead wire holder Route the lead wires of choke coils between ribs rib Put insulated connector here Put insulated connector here Fix...

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