Makita 6991D Technical Information Download Page 4

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epair

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< 3 > Removing ball bearing 6901LLB

< 4 > Fastening torque for tapping screws

Give a shock by knocking internal gear case
on the working table.

Ball bearing 6901LLB can be removed
from internal gear case by the shock.

Ball bearing 6901LLB

Internal gear case

Fig. 3

ircuit diagram

Switch

FET
(Field Effect Transistor)

Black

Red

Brush holder

Fastened position

Tapping screws

Fastening torque: N.m (Kgf.cm)

Housing set (R & L)

4 x 18

4 x 25
3 x 8

*Hammer case

FET Spacer

1.27 - 1.76 (13 - 18)

1.76 - 2.16 (18 - 22)

1.1 - 1.5 (11 - 15)

< Note > Hammer case has to be fastened diagonally as illustrated in Fig. 4, when assembling.

Fig. 4

Hammer case

Summary of Contents for 6991D

Page 1: ...135 9135 2 0 2 6 2 6 Ni Cd Ni MH 3 0 3 0 No load speed min 1 rpm Voltage V Model No Capacities Impact per minute min 1 bpm Max fastening torque Net weight kg lbs D C 9 6 V Standard bolt High tensile b...

Page 2: ...tive cooling Push Button for Reversing More compactly designed body Refer to the comparisons listed below Model No Specification Square drive mm Manufacturer No load speed min 1 rpm Blows per min min...

Page 3: ...3 5 are installed in hammer Check the quantity when assembling Fig 1 Spindle Cam groove top of spindle Opening for steel ball inserting Steel ball 5 6 x 2 Steel ball 3 5 x 25 Hammer 1R045 Large gear...

Page 4: ...y the shock Ball bearing 6901LLB Internal gear case Fig 3 Circuit diagram Switch M2 M1 FET Field Effect Transistor Black Red Brush holder Fastened position Tapping screws Fastening torque N m Kgf cm H...

Page 5: ...Pass the lead wires as illustrated in Fig 5 FET Field Effect Transistor FET lead wires Rib Lead wire Black to be connected to switch has to be passed under the lead wire Red Lead wire Red to be conne...