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
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
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