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P 4/ 13

R

epair

(2) Remove Oil pump complete as drawn in 

Fig. 3

.

1. Remove Brush holder caps and Carbon brushes

    from the machine. 

    Then, remove four 5x25 Tapping screws.

Carbon brush

5x25 Tapping

screw (4 pcs.)

Carbon brush

2. Separate Motor housing from Gear housing.

3. Remove Bearing housing from Gear housing

    by tapping the edge of Gear housing with

    a plastic hammer.

4. Disassemble Oil pump complete from Gear housing

    by loosening 4x18 Tapping screw.

Fig. 3

Brush holder cap

Brush holder cap

Motor housing

Gear housing

4x18 Tapping screw

Oil pump

Gear housing

Bearing housing

Note

: If Ball bearing 606ZZ is left in Gear housing,

          blow out Ball bearing 606ZZ from Gear housing

          with an air duster.

Gear housing

Ball bearing 606ZZ

DISASSEMBLING

[3] DISASSEMBLY/ASSEMBLY

[3]-1. Oil pump, Front guard (cont.)

Send compressed air to the hole with an air duster.

Summary of Contents for UC3050A

Page 1: ...omatic chain oiling Protection from electric shock Power supply cord m ft Model No UC3050A UC3051A UC3550A UC3551A UC4050A UC4051A UC4550A UC4551A 14 5 870 2 900 UK 10 32 8 Germany Sweden Reunion Chin...

Page 2: ...e following portions designated with the black triangle to protect parts and product from unusual abrasion Fig 1 Item No Description Link plate complete Compression spring 9 Coil portion Gear housing...

Page 3: ...ve Front handle 6 Remove Gear housing cover 7 Pull out Connector A straight from the nipple of Oil pump complete through Gear housing then remove Oil tank from Gear housing When removing Oil pump comp...

Page 4: ...ge of Gear housing with a plastic hammer 4 Disassemble Oil pump complete from Gear housing by loosening 4x18 Tapping screw Fig 3 Brush holder cap Brush holder cap Motor housing Gear housing 4x18 Tappi...

Page 5: ...5 Fig 4 Fig 5 Fig 6 Fit two pins of Oil pump complete into the cavities of Gear housing Then tighten Oil pump complete with 4x18 Tapping screw pins Oil pump 4x18 Tapping screw pin holes 4x18 Tapping...

Page 6: ...Fig 8 4 Remove Spiral bevel gear 12 by unscrewing M8 Hex nut Then remove Ball bearings from Armature with 1R269 3 Pull out Armature assembly from Motor housing Motor housing Gear housing section M8 H...

Page 7: ...parts by reversing the disassembly procedure Refer to Figs 9 8 and 7 Ball bearing 606ZZ Retaining ring S 10 Worm gear Spiral bevel gear 37 Spiral bevel gear 37 Spiral bevel gear 37 Ball bearing 6001ZZ...

Page 8: ...one as drawn in Fig 2 Note Be careful not to lose Compression spring 6 2 Disassemble Brake mechanism as drawn in Fig 10 Front hand guard Front handle Front hand guard Retaining ring E type 6 Flat wash...

Page 9: ...ousing Hook of Link plate complete for hooking Brake band Rib of Bearing housing 3 Link plate complete section can now be disassembled by prying it up with a slotted screwdriver 4 Remove Brake band fr...

Page 10: ...versing the disassembly procedure Refer to Figs 11 and 13 Note Put O ring 6 to Gear housing before assembling Bearing housing to Gear housing Fig 13 Compression spring 9 Pin of Bearing housing The rou...

Page 11: ...s used for some countries 4 White lead wire is used for some countries brown 3 blue 4 blue orange orange orange Gear housing cover side Sprocket cover side yellow red Choke coil 2 orange Power supply...

Page 12: ...w 2 Pull out Field s lead wires yellow white orange through the holes of Motor housing as shown below Motor housing Switch for Kickback brake Switch for Kickback brake Makita or DOLMAR logo Makita or...

Page 13: ...pressor between Rib F and Rib G while facing its wire connected side to the bottom of Handle L Route Controller s lead wires blue red between Bearing box of Motor housing and Rib E Fix Controller s le...

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