Makita M1901B Betriebsanleitung

M1901B

REPAIR MANUAL

Power Planer

OFFICIAL USE

For ASC

P 2 / 11

Repair

[1] NECESSARY REPAIRING TOOLS

Code No. Description Use for

1R045 Removing Spindle from Motor bracket

1R269 Removing Retaining ring S-7 from Spindle

GEAR EXTRACTOR (LARGE)

BEARING EXTRACTOR

[2] LUBRICATION

Item No. Description

Front base Screw hole accepting screw of Knob 44 a little

a littlesurface of Drum portion

Main frame complete

Amount

Symbol of

lubricant

Portion to lubricate

Apply lubricant VG100 to the parts designated with black triangle.

CAUTION: Repair the machine in accordance with “Instruction manual” or “Safety instructions”.

(32)

(a)

(b)

(a)

(b)

Knob 44

Screw portion

Flat washer 10

Rubber packing

Index

[1] NECESSARY REPAIRING TOOLS P 2

[2] LUBRICATION

[3] DISASSEMBLY/ASSEMBLY P 3

[3]-1. Poly V-belt 4-241

[3]-2. Armature P 4 - 5

[3]-3. Drum P 6 - 7

[3]-4. Front base, Base (rear side) P 8

[3]-5. Foot P 9

Circuit diagram P 10

Wiring diagram P 11

P 3 / 11

Repair

[3] DISASSEMBLY/ASSEMBLY

[3] -1. Poly V-belt 4-241

DISASSEMBLING

ASSEMBLING

(1) Disassemble Belt cover.

Remove Belt cover and then remove Poly V-belt 4-241 as illustrated in Fig. 2 in case of replacing the Poly V- belt only.

In case of replacing Armature, Ball bearings or Drum, remove the Poly V-belt as illustrated in Fig. 2A.

Cut Poly V-belt 4-241.

Fig. 2 Fig. 2A

Poly V-belt 4-241

Screwdriver

Bracket complete V Pulley 4-20L

1. Engage all V-shaped ribs of Poly V-belt 4-241

with the grooves of V-pulley 4-20L (small one).

And engage some of V-shaped ribs of the same

of the Poly V-belt with the groove of V-pulley

4-37 (large one).

2. Turn V-pulley 4-37 (large one), while pressing

the V-belt toward Bracket complete, until all

V-shaped ribs of Poly V-belt 4-241 with the grooves

of V-pulley 4-37 (large one). Now, Poly V-belt and

both of V-pulleys engage each other.

Poly V-belt 4-241

V-Pulley 4-20L

Poly V-belt 4-241 Poly V-belt 4-241

V-Pulley 4-20L

V-Pulley 4-37

Bracket complete

V-pulley 4-37

Poly V-belt 4-241

< Note >

Be careful,not to push so deep that

Poly V-belt 4-241 rubs against

Bracket complete.

Poly V-belt 4-241

V-pulley 4-37

(1) Mount Poly V-belt 4-241 as illustrated in Fig. 3.

Fig. 3

1. Insert screwdriver under Poly V-belt 4-241.

2. Lever up the Poly V-belt with the screwdriver,

while turning any of two V-pulleys.

Now, Poly V-belt 4-241 is removed.

P 4 / 11

Fig. 4

Fig. 5

Fig. 6

Repair

[3] DISASSEMBLY/ASSEMBLY

[3] -2. Armature

DISASSEMBLING

(1) In case of replacing Armature, remove Poly V-belt 4-241 as illustrated in Fig. 2A.

(2) Remove Carbon brush as shown in Fig. 4.

(3) For disassembling Armature, separate Bracket complete from Main frame, as illustrated in Fig. 5.

(4) Remove V pulley 4-20L by turning it clockwise as shown in Fig. 6 below.

1. Remove Nozzle by unscrewing M4x22 Pan head

screw.

2. Remove Brush holder cap and Carbon brush.

Nozzle

M4x22 Pan head screw

Carbon brush

Brush

holder cap

Brush holder cap

Bracket

Double ended philips bit

Bracket

4x18 Tapping screw

1. Unscrew six 4x18 Tapping screws

with which Bracket complete is

secured to Main frame. 2. Separate entirely Bracket complete, Armature and

Drum, by striking Main frame with plastic hammer.

Main frame

Armature

Main frame

Drum

Preset F/R Change lever

to F mode to turn the

V pulley 4-20L clockwise.

Grip Armature with groved

hand, to protect hand against

injury.

Turn clockwise

for removing.

V pulley 4-20L

Bit adapter

assembly

Bit adapter assembly

1/2” (12.7mm) asquare

Fit this side to the square

portion of V pulley 4-20L

Square portion of V pulley 4-20L

P 5 / 11

Repair

[3] DISASSEMBLY/ASSEMBLY

[3] -2. Armature

ASSEMBLING

DISASSEMBLING

(5) Separate Armature from Bracket complete, and remove Ball bearings as shown in Fig. 7.

Bracket complete

Ball bearing

606ZZ

Ball bearing

606ZZ

Insulation washer

1R045

Claw

Armature

Insulation

washer

1. Firmly gripping Bracket complete with 1R045, separate Armature from Bracket complete.

Drum

V pulley 4-20L

Fig. 7

Fig. 8

2. The gap between Insulation washer and

Ball bearing 606ZZ is too tight to engage

claw of 1R269. So, fixing claw of 1R269

with Water pump pliers firmly,

remove Ball bearing 606ZZ.

Ball bearing 606ZZ

Water pump pliers

1R269

Claw

Ball bearing 6000ZZ

Assembling can be made by taking reverse step of Disassembling. Refer to Fig. 7,Fig. 6,Fig. 5,Fig. 4.

3. Remove Ball bearing 6000ZZ with 1R269.

Turn counter

clockwise

for tightening.

V pulley 4-20L

Bracket complete

< Note >

Enough to tighten V pulley 4-20L

to proper level in this step.

V pulley 4-20L is tightened

automatically to firm level

by rotation of Armature.

Armature

Pay attention to Fig. 8, when assembling V pulley 4-20L.

Grip Drum with groved hand,

to protect hand against injury.

P 6 / 11

Repair

[3] DISASSEMBLY/ASSEMBLY

[3] -3. Drum

DISASSEMBLING

Fig. 9

Fig. 10

(1) Remove Poly V-belt 4-241. See Fig. 2A.

(2) Separate Bracket complete section from Main frame. See Fig. 4,Fig. 5.

(3) Separate Drum from Bracket complete as shown in Fig. 9.

Double ended Philips bit

Bit adapter assembly

1/2” (12.7mm) square

Fit this side to the square

portion of V pulley 4-37

Square portion of V pulley 4-37

Grip Drum with groved hand,

to protect hand against injury.

Turn counter clockwise

for removing.

1. Make the tip of claw shape, because

of too tight space between Ball

bearing 608ZZ and Drum to engage

the claws.

Bit adapter

assembly

V pulley 4-37

Preset F/R Change lever to

R mode to turn V pulley 4-37

counter clockwise.

Drum V pulley 4-37

Ball bearing 6000ZZ

Vise

Drum

Ball bearing 608ZZ

3. Remove Ball bearing 6000ZZ

with 1R269.

2. Fixing the legs of 1R269

with vise, disassemble Ball

bearing 608ZZ using the 1R269

with remodeled claws.

1R269

Ball bearing 608ZZ

Ball bearing 6000ZZ

(4) Disassemble Ball bearings from Drum as shown in Fig. 10.

P 7 / 11

Repair

[3] DISASSEMBLY/ASSEMBLY

[3] -3. Drum

ASSEMBLING

Fig. 11

< Note >

Mount V pulley 4-37 to Drum as follows. See Fig. 11.

(1) Assemble Ball bearing 608ZZ to Drum of opposite side of V pulley 4-37. And assemble Ball bearing 6000ZZ

to the same of V pulley 4-37 side. Refer to Fig. 10.

(2) Mount Drum to Bracket. And tighten V pulley 4-37 with Bit adapter. Refer to Fig. 9.

V pulley 4-37

Bracket complete

< Note >

Enough to tighten V pulley 4-37

to proper level in this step.

V pulley 4-37 is tightened

automatically to firm level

by rotation of Drum. Turn clockwise

for tightening.

Grip Drum with groved hand,

to protect hand against injury.

Bit adapter

P 8 / 11

Repair

[3] DISASSEMBLY/ASSEMBLY

[3] -4. Front base, Base (rear side)

DISASSEMBLING

Fig. 12

Fig. 13

(1) Front base section can be disassembled as shown in Fig. 12.

(2) Base (rear side) can be disassembled as shown in Fig. 13.

Base

Foot

1. Unscrew four 4x18 Tapping screws. So. Base (rear side) can be separated from Main frame complete.

2. Remove entirely Foot and Torsion spring 7.

Knob 44

Flat washer 10

1. Remove Knob 44 as shown below. 2. Front base can be separated

from Main frame complete.

3. Remove Scale label from

Knob 44, because the numbers

on Scale label deviates from the

actual planing depth, in case of

disassembling of Front base

and Base (rear side).

Front base Front base

Turn counter

clockwise for

unscrewing.

Compression

spring 18

Rubber packing

4x18 Tapping screw

4x18

Tapping screw

Torsion spring 7

4. From Front base, remove

Compression spring 18

and Rubber packing.

Scale label

P 9 / 11

Repair

[3] DISASSEMBLY/ASSEMBLY

[3] -4. Front base, Base (rear side)

[3] -5. Foot

ASSEMBLING, ADJUSTMENT

Fig. 14

Fig. 15

(1) Mount Foot to Base. And assemble the Base to Main frame complete. Refer to Fig. 13.

(2) Mounting Rubber packing and Compression spring 18 to Front base, assemble the Front base

to Main frame complete. Refer to Fig. 12.

(3) Adjust with Knob 44, until “0” on the Scale label correspond to the actual planing depth “0” as shown in Fig. 14.

Ruler

Front base

Knob 44

Base (rear side)

1. Apply a ruler on the surface of Base

and align Front base level by turning

Knob 44 to the same level of (rear) Base.

Now, the machine has been adjusted

to “Planning depth at 0”.

2. Stick Scale label on the Knob 44,

while aligning “0” to the Triangle

mark on the main fame.

Triangle mark

fresh Scale label

2a. If the removed Knob 44 is reused without sticking new Scale label, “0” may deviate from the

Triangle mark by 180 degrees.

Remove knob 44 again in this case, and approach to drive from the point deviating by 180 degrees

from the old approaching point. So, “0” can exactly align to the Triangle mark.

DISASSEMBLING

ASSEMBLING

Disassemble Base (rear side). So, Foot is removed together with Base as shown in Fig. 13.

Assemble Foot to Base as shown in Fig. 15.

Tail of Torsion

spring 7

long axis

short axis

Torsion spring 7

1. Set Torsion spring 7 to long axis of Foot. 2. Put one of tail of Torsion spring 7

to Base as shown in the photograph

below.

Foot

P 10 / 11

Fig. D-1

Circuit diagram

White

Brown

Color index of lead wires' sheath

Black

Blue

< Note >

AWG: American Wire Gage

Item No.

(2)

(1)

Circuit of inside of Switch

Symbol of electrical parts

< Note >

Noise suppressor is not used for some countries.

Viewing from Fan side

AWG18

Noise suppressor

Power supply cord

Field

AWG18

Insulated terminal (M3.5)

Non-Insulated Spring terminal

AWG20

(2)

(1)

Switch

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