Makita 6842 Technical Information
Auto feed screwdriver
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Also See for 6842:
- User manual ,
- Instruction manual (41 pages) ,
- Specification sheet (2 pages)
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Instruction Manual
T
ECHNICAL INFORMATION
Model No.
Description
C
ONCEPT AND MAIN APPLICATIONS
Models 6842, 6843 and 6844 have been developed
as the successor models of 6833 series models.
These models feature more reliable casing attachment
with the following benefits:
Rigid aluminum casing
Stopper base with anti-tilt device for preventing screws from swaying
Rubber cap securely fixed to stopper base
Dust-proof construction for smooth sliding action
6842 series also includes Auto feed screwdriver with coil magazine
available as Model 6845.
S
pecification
6842/ 6843/ 6844
Voltage (V)
110
120
220
230
240
Specification
No load speed: min.
Driver bit: mm (")
Capacities: mm (")
[collated drywall screw]
Reverse switch
Protection against electric shock
Power supply cord: m (ft)
Net weight: kg (lbs)
*Overall length of driver bit may differ by country.
S
tandard equipment
6842/ 6843
Phillips bit 2-162 or 2-157 ....................... 3
Belt clip ................................................... 1
Thumb screw (for fixing Belt clip) .......... 1
Plastic carrying case ................................ 1
Note: The standard equipment for the tool shown above may differ by country.
O
ptional accessories
Phillips bit 2-162 or 2-157 (for 6842/ 6843)
Square bit 2-162 or 2-157 (for 6842/ 6843)
Phillips bit 2-182 or 2-177 (for 6844)
Square bit 2-182 or 2-177 (for 6844)
6842, 6843, 6844
Auto Feed Screwdriver
Cycle (Hz)
Current (A)
4.5
50/60
4.3
50/60
2.3
50/60
2.2
50/60
2.1
50/60
Model
= rpm
-1
Shank
Overall length*
Diameter
Overall length
Continuous Rating (W)
Input
470
---
470
470
470
6842
4,700
6.35 (1/4) Hex
162 (6-3/8) or 157 (6-3/16)
25 to 55
(1 to 2-3/16)
Double insulation
Europe: 4.0 (13.1), Other countries: 2.5 (8.2)
2.0 (4.4)
6844
Phillips bit 2-182 or 2-177 ....................... 3
Belt clip ................................................... 1
Thumb screw (for fixing Belt clip) .......... 1
Plastic carrying case ................................ 1
Extension handle
Casing attachment
Plastic carrying case
L
6842/ 6843
W
6844
Dimensions: mm (")
6842/ 6843
Length (L) 400 (15-3/4) 440 (17-1/4)
Width (W)
75 (2-15/16)
Height (H)
243 (9-9/16)
Max. Output (W)
Output
190
190
190
190
190
6843
6844
6,000
3,000
182 (7-1/8) or 177 (7)
4 (5/32)
45 to 75
(1-3/4 to 2-15/16)
Yes
2.1 (4.6)
PRODUCT
P 1/16
H
6844
400
400
400
400
400
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Summary of Contents for Makita 6842
- Page 1 Rubber cap securely fixed to stopper base 6844 Dust-proof construction for smooth sliding action Dimensions: mm (") 6842/ 6843 6844 6842 series also includes Auto feed screwdriver with coil magazine available as Model 6845. Length (L) 400 (15-3/4) 440 (17-1/4) Width (W) 75 (2-15/16) Height (H)
-
Page 2: Necessary Repairing Tools
1R291 Retaining ring S and R pliers Removing Casing cover and Insulation sleeve [2] LUBRICATION Apply Makita grease FA.No.2 to the following portions designated with the black triangle to protect parts and product from unusual abrasion. Item No. Description Portion to lubricate Steel ball 3.5... - Page 3 P 3/16 epair [3] DISASSEMBLY/ASSEMBLY [3] -1. Casing Assembly and Feeder Box Assembly DISASSEMBLING Disassemble by taking the steps described in Fig. 2 to Fig 17. Fig. 2 Fig. 3 1) Loosen M4x28 Thumb screw 3) While pressing Clamper, remove three M4x12 Countersunk by turning counterclockwise.
- Page 4 P 4/16 epair [3] DISASSEMBLY/ASSEMBLY [3] -1. Casing Assembly and Feeder Box Assembly (cont.) DISASSEMBLING Fig. 7 7) While pressing the locking claws of Casing cover inward Dial 42 can now be removed from using 1R291, pull off Feeder box section from Casing cover. Casing complete by unscrewing M4x12 Countersunk head screw.
- Page 5 P 5/16 epair [3] DISASSEMBLY/ASSEMBLY [3] -1. Casing Assembly and Feeder Box Assembly (cont.) DISASSEMBLING Fig. 11 11) Remove Box cover complete from Feeder box Side view of Feeder box by unscrewing 4x18 Tapping screw. after removing Box cover complete Compression spring 6 Box cover complete Feeder box...
- Page 6 P 6/16 epair [3] DISASSEMBLY/ASSEMBLY [3] -1. Casing Assembly and Feeder Box Assembly (cont.) DISASSEMBLING Fig. 15 Fig. 16 15) Remove Shoulder pin 6 from Feeder box. 16) Remove Spur gear 16 from Feeder box. Shoulder pin 6 Sleeve 5 Spur gear 16 Spur gear 16 Fig.
- Page 7 P 7/16 epair [3] DISASSEMBLY/ASSEMBLY [3] -1. Casing Assembly and Feeder Box Assembly (cont.) ASSEMBLING 1) Assemble Sleeve 5, Spur gear 16 and Shoulder pin 6 to Feeder box. (See Fig. 17 to Fig. 15 on page 6.) 2) Assemble Wheel together with Dust cover to Feeder box. (See Fig. 14.) Important 1: Dust cover must be fixed securely to Feeder box as described in Fig.
- Page 8 P 8/16 epair [3] DISASSEMBLY/ASSEMBLY [3] -1. Casing Assembly and Feeder Box Assembly (cont.) ASSEMBLING 4) Assemble Ratchet arm complete and Compression spring 6 to Spur gear 16. (See Fig. 12 on page 5.) 5) Assemble Box cover complete to Feeder box. (See Fig. 11 on page 5.) 6) Make sure that Wheel moves correctly as described in Fig.
- Page 9 P 9/16 epair [3] DISASSEMBLY/ASSEMBLY [3] -1. Casing Assembly and Feeder Box Assembly (cont.) ASSEMBLING 8) Casing complete can be assembled by doing the reverse of the disassembling steps. (Fig. 7 to Fig. 2 on pages 4 to 3) Note: Be sure to follow the instructions described in Fig. 25 to Fig. 27. Fig.
- Page 10 P 10/16 epair [3] DISASSEMBLY/ASSEMBLY [3] -2. Stopper Base Section DISASSEMBLING Disassemble by taking the steps described in Fig. 28 to Fig. 31. Fig. 28 Fig. 29 1) Remove Guide box complete from Stopper base together with 2) Separate Guard from Guide box complete. Guard first by inserting slotted screwdriver into the rectangular hole of Stopper base, then by pushing Guide box complete with the screwdriver.
- Page 11 Note: Different gears are used for Helical gear (large) and Helical gear (small) by model as listed below. Be careful not to confuse them. Model 6842 Model 6843 Model 6844 Helical gear (large)
- Page 12 (3 pcs) Fig. 40 5) Assemble the parts illustrated below into Clutch section. Note: Apply Makita grease FA.No.2 to the cam portion of Plane bearing 14 Spindle B to prevent Flat washer 25 (2 pcs) from falling off from Spindle B.
- Page 13 P 13/16 epair [3] DISASSEMBLY/ASSEMBLY [3] -4. Motor Section DISASSEMBLING 1) Remove Casing assembly (Fig. 2 on page 3). 2) Disassemble Housing (R) from Housing (L). (Figs. 32, 33 on page 10) 3) Disassemble Motor section by taking the steps described in Fig. 41 to Fig. 43. Fig.
-
Page 14: Circuit Diagram
P 14/16 ircuit diagram Fig. D-1 Color index of lead wires' sheath Black Orange White Purple Clear Note on Noise suppressor The color of Lead wire to Brush holder 1) Noise suppressor and Earth terminal (Ground Orange wire is connected to terminal) are not used for some countries. - Page 15 P 15/16 iring diagram [1] Wiring on Endbell Complete Route Lead wires on Endbell complete as described in Fig. D-2 Figs. D-2, D-3 (viewed from Housing (L) side) and Connect each Lead wire (orange, purple) Fig. D-4 (viewed from Field side). to Brush holder as illustrated below.
- Page 16 P 16/16 iring diagram [2] Wiring in Housing Note: Noise suppressor and Earth terminal (Ground terminal) are not used for some countries. Fig. D-5 Route the following Lead wires between The following Lead wires must be tight between this screw boss and the inside wall of Housing (L): Switch terminal and Lead wire holder: *Lead wire to Brush holder (purple) *Lead wire to Brush holder (orange)