Makita HP2070 Technical documentation

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

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

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)

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

8 15 17 19 21

Fig. 1

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

Portion to lubricate

Amount

(g [oz])

Proper amount

approx. 25 [7/8]

Proper amount

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

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

+ 9 hidden pages