Makita HP2070 Technical documentation

T

ECHNICAL INFORMATION

Models No.

Description

HP2070, HP2070F, HP2071, HP2071F

20mm (3/4") 2-Speed Hammer Drill

CONCEPT AND MAIN APPLICATIONS

NEW TOOL

P 1 /13

W

W

L

L

These hammer drills have been developed as the highest
specification models of Makita hammer drills.
Their features are;
* Powerful 1,010W motor
* New reversing system prevents the speed reduction of
motor in reverse rotation.
* Mechanical 2 speed, and electronic speed adjusting dial
for presetting maximum speed
* LED job light convenient for operations at dimly lit job sites
(HP2070F and HP2071F)
* Keyless drill chuck (HP2071 and HP2071F)

Specification

Voltage (V)

110 1,010 1,100
120

220
230
240

Model No.

No load speed
(min -1= rpm)

Blows per min.
(min -1= bpm)

Drill chuck
Chuck ability (mm [inch])

Drilling capacity
(mm [inch])

Reverse switch
Mechanical speed change
Torque limiter
LED Job light

Protection against electric shock

Cord length (m [ft])
Net weight (kg [lbs])

Current (A)

9.7

8.2

4.8

4.6

4.4

Concrete

Steel

Wood

High
Low
High

Low

High
Low
High

Low

Cycle (Hz)

50 / 60
50 / 60

50 / 60
50 / 60
50 / 60

HP2070 HP2070F

Keyed

No Yes

H

HP2070

Dimensions : mm [inch]

Length ( L )
Height ( H )

Width ( W )

Continuous Rating (W)

Input Output

600

940 1,100
1,010 1,100
1,010 1,100
1,010 1,100

HP2071 HP2071F

0 - 2,900
0 - 1,200

0 - 58,000
0 - 24,000

2.0 - 13 [1/16 - 1/2]
20 [13/16]

8 [5/16]

16 [5/8]
25 [1]

40 [1-9/16]

Yes

2 speed

Yes

No Yes

by double insulation

2.5 [8.2]

2.4 [5.3]

600
600
600
600

Keyless

Max. Output (W)

H

HP2071

362 [14-1/4]
220 [8-5/8]

70 [2-3/4]

Standard equipment

* Depth gauge ................................... 1 pc.

* Side handle set .............................. 1 set

* Plastic carrying case ..................... 1 pc.

* Chuck key S13 (HP2070 and HP2070F) .... 1 pc.

* Key holder (HP2070 and HP2070F) ..... 1 pc.

< Note >
The standard equipment for the tool
may differ from country to country.

Optional accessories

* T.C.T. drill bits Ø 5.0 - Ø 19.0
* Drill bits for steel Ø 5.0 - Ø 13.0
* Drill bits for wood Ø 5.0 - Ø 40.0
* Hole saws Ø 16 - Ø 120
* Metal borer Ø 14 - Ø 35
* Chuck key S13 for HP2070 and HP2070F

* Depth gauge
* Wrench
* Blow out bulb
* Keyless drill chuck set
* Drill chuck set
* Side handle set
* Drill stand type 43

Repair

<1> Lubrication and Adhesive Application

Lubrication

Apply Makita grease N No.1 to the following portions designated by the black triangular mark to protect
the parts and the tool from unusual abrasion. (Fig.1)

P 2 /13

Item No. in

parts breakdown

3

8
15
17
19
21

Fig. 1

3

Part name

Spindle Whole surface except threaded portion
Cam A Cam surface
Gear housing complete Gear chamber
Change lever Teethed portion
Gear complete Teeth
Spur gear 29-37 Teeth

8

15

Portion to lubricate

19

Amount

(g [oz])

Proper amount

approx. 25 [7/8]

Proper amount

17

Adhesive Application

Apply TREE BOND 1327 to the threaded portion of Bearing retainer when fastening
Bearing retainer to Gear housing complete. (Fig.2)

Fig. 2

Bearing retainer

Gear housing complete

21

P 3 /13

<2> Disassembling and Reassembling Procedures

1) Drill Chuck
Disassembly;

1) Secure a Drill chuck extractor (1R139) firmly with a vise as illustrated in Fig. 3.

2) Fix the Spindle on the Drill chuck extractor by inserting the Spindle into the U-shaped notch on the Drill chuck
extractor with the flat sides of the Spindle facing the edges of the notch. And then remove the Drill chuck by
turning it counterclockwise with the repairing tools (1R223, 1R224 and 1R298). (Fig. 4)
Use a pipe wrench to remove the Drill chuck, if the sleeve of the Drill chuck does not turn because of some troubles
with the Drill chuck. Grip the periphery of the sleeve with the wrench, and turn the wrench counterclockwise.
The keyed Drill chuck of HP2070/HP2070F can be removed using a Wrench 43 (781024-2).)

Reassembly;
When fastening the Drill chuck to the Spindle, set the torque of the Torque wrench shaft (1R223) to 35.7 to 45.9 N.m.

Fig. 3

Drill chuck extractor
(1R139)

UT2201
6310
DP4700

8419B

17.0mm (11/16")

HP2031
8420V
8406C
8406

6300L
6300LR
6013BR
6300-4

Fig. 4

Torque wrench shaft
20-90 N.m (1R223)

Ratchet head 12.7

Vise

(1R224)

2) Carbon Brush
Disassembly;

1) Remove the three 4x25 Tapping screws, and separate the Handle cover
from the Motor housing. (Fig. 5)

2) Turn the Brush holder unit (= F/R switch) to reverse position, and then
remove the Carbon brush positioned on the opposite side of the Trigger
switch using a small slotted screwdriver. (Fig. 6)

3) Take the Trigger switch off from the Motor housing, and set the Brush
holder unit in neutral position. And then remove the Carbon brush on
the side of the Trigger switch. (Fig. 7)

Note; The Carbon brush on the side of the Trigger switch cannot be
removed, if you turn the Brush holder unit in neutral position
before separating the Switch trigger from the Motor housing.

Hex. bar 10 with
square socket (1R298)

Fig. 5

Motor housing

Drill chuck extractor
(1R139)

Handle cover

Tapping
screw 4x25
(3pcs)

Fig. 6 Fig. 7

Carbon brush
on the opposite

Brush holder unit

side of Trigger
switch

Reverse
position

(A)

Carbon brush
on the side of
Trigger switch

(view from A)

Trigger switch

<2> Disassembling and Reassembling Procedures

3) Armature assembly

Disassembly;

1) Remove the Carbon brushes as described on page 3. (Fig. 5, 6, 7)

2) Remove the three 4x35 Tapping screws, and then take out of the Motor housing the unit of the Armature assembly
and the Gear housing cover. (Fig. 8)

3) Remove the Rubber Pin 4 to separate the Change lever A and Lever case from the Gear housing cover.

4) And then remove the Gear housing cover from the Armature assembly using a Gear extractor (1R045). (Fig. 9)

5) The Ball bearing 607LLB on the side of commutator can be removed using a Bearing extractor (1R269).)

Fig. 8

Change lever A
Lever case

Fig. 9

Gear extractor (large)
(1R045)

P 4 /13

Armature ass'y with
Gear housing cover

Motor housing

4x35 Tapping
screws (3pcs)

Rubber pin 4

4) Field and Brush holder unit

Disassembly;

1) Shift the Controller till the Connectors appears entirely out of the Motor housing, and disconnect the Connectors that
connect the Controller with the Field. (Fig. 10)

2) In order to remove the Field, remove the two 4x70 Tapping screws, and then gently hit the Motor housing with plastic
or wooden hammer. (Fig. 11)

Fig. 10 Fig. 11

Controller

Motor housing

Connectors

Gear housing cover

Armature ass'y

3) The Brush holder unit can be
removed from the Motor housing
by pulling it in the direction of
the black arrow after disconnecting
the Lead wires which are connected
to the Brush holder unit with the
two Receptacles. (Fig. 12)

Lead wires
from Field

Fig. 12

Brush holder unit

Lead wires

from

ABTrigger switch white

Controller 115V
Controller 220-240V

C Controller black

color

white

blue

Tapping screw
4x70 (2pcs)

Receptacles

Lead wire A

Lead wire B

Lead wire C

Motor housing