Makita 6936FD Manual

Models No.
Description
PRODUCT
CONCEPT AND MAIN APPLICATIONS
Specification
Standard equipment
Optional accessories
Note: The standard equipment for the tool shown may differ by country.
P 1 / 8
H
L
W
Dimensions: mm ( " )
Width ( W )
Height ( H )
Length ( L ) 163 (6-3/8)
6936FD
Cordless Impact Driver
243 (9-9/16)
94 (3-11/16)
Model 6936FD has been developed as an 18V version tool of the
current 14.4V Model 6935FD.
Uses 18V cluster type batteries as power source, and features the following
same benefits as Model 6935FD.
With built-in LED job light
Hammer case of new design without screw hole protrusions
for increased maneuverability
Phosphorescent (glow-in-the-dark) bumper
Max. fastening torque: 140 N.m
Battery cover ......................... 2 pcs
Plastic carrying case ............. 1 pc
Hook ..................................... 1 pc
Assorted socket bits
Assorted Phillips bits
Stopper for impact driver
Battery 1822 (2.0Ah/ Ni-Cd)
Battery 1834 (2.6Ah/ Ni-MH)
Battery 1835 (3.0Ah/ Ni-MH)
Battery PA18 (1.3Ah/ Ni-Cd)
Charger DC1804
Automotive charger DC1822
This new product will be available in the following variations.
6936FDWAE 1822 (2.0Ah/ Ni-Cd)
6936FDWDE* 1834 (2.6Ah/ Ni-MH)
6936FDWFE 1835 (3.0Ah/ Ni-MH)
DC1804
6936FDZ No No
Model No. type quantity Charger
Yes
No
Plastic
carrying case
2
Battery
*Offered as Model 6936FD to USA, Canada, Mexico, and Panama
Battery
No load speed: min.-1=rpm
Impacts per min.: min.-1=bpm
Max. fastening torque: N.m (kgf.cm/in.lbs)
Capacities
Electric brake
Reversing switch
Net weight*: kg (lbs)
Variable speed (electric)
Capacity: Ah
Cell
Voltage: V 18
0 - 2,600
0 - 3,200
140 (1,430/ 1,240)
Standard bolt
High tensile bolt
Machine screw
Driving shank
M5 - M14 (3/16 - 9/16")
M5 - M12 (3/16 - 15/32")
Coarse thread screw 22 - 125mm (7/8 - 4-7/8")
M4 - M8 (5/32 - 5/16")
Yes
Yes
Yes
1.9 (4.2)
2.0/ 2.6/ 3.0
Ni-Cd/ Ni-MH
250
6.35mm (1/4") Hex
Max output: W
*Net weight includes battery.
TECHNICAL INFORMATION

P 2 / 8
Repair
[2] LUBRICATION
Apply Makita grease N. No.2 to the following portions designated with the black triangle to protect
parts and product from unusual abrasion.
[1] NECESSARY REPAIRING TOOLS
CAUTION: Remove the battery from the machine for safety before repair/ maintenance !
Fig. 1
Hammer case comp. Steel ball 3.5
19 Anvil M
20 Hammer Groove for twenty four 3.5 Steel balls
25 Steel ball 5.6 (2pcs) Whole surface
26 Spur gear 22 (2pcs) Teeth portion
Teeth portion
27 Spindle Insertion hole for Armature (Put 2g in the hole.)
28 Pin 5 (2pcs) Surface that that contacts Spur Gear 22
(This pin is the gear shaft for .)
34 Internal gear 51
Surface that contacts Hammer case complete
Insertion hole for Spindle
Flat washer 24 Cup washer 14
Armature
Compression
spring 25
Code No. Description Use for
1R045 Gear extractor Disassembling the Hammer mechanism
1R288 Screwdriver magnetizer Removing Steel balls
1R291 Retaining ring S and R pliers Disassembling the Bit holder section
1R346 Center attachment Modular use with No.1R045
134847-1 Socket 30-78 Modular use with No.1R223
1R223 Torque wrench shaft 20-90 N.m Removing Hammer case complete
1R224 Ratchet head 12.7 Modular use with No.1R223
Item No. Description Portion to lubricate
Steel ball 3.5 (24pcs)

P 3 / 8
Repair
[3] DISASSEMBLY/ASSEMBLY
[3] -2. Hammer Case Complete
Fig. 3
Fig. 4 Fig. 5
DISASSEMBLING
Note: You need not remove the Bit holder section
1) Remove PT3x10 Tapping screw, and pull LED circuit out of Housing. Remove Stopper by removing PT3x16
Tapping screw. Then remove Bumper from Hammer case complete. (Fig. 3)
2) Fix the machine in vise, and remove Hammer case complete by turning clockwise with three repair tools
as illustrated in Fig. 4.
3) The machine can now be disassembled as illustrated in Fig. 5.
[3] -1. Bit Holder Section
DISASSEMBLING
See Fig. 2.
1) Remove Ring spring 11 from the groove on Anvil M
using Retaining ring S and R pliers (No.1R291).
2) Now the following parts can be removed from Anvil M:
Flat washer 12, Compression spring 13,
Sleeve, Steel ball 3.5 (2pcs)
ASSEMBLING
Do the reverse of the disassembling steps.
Note: Before putting Sleeve through Anvil, apply grease
to Anvil as described in [2] LUBRICATION.
Torque wrench shaft 20-90N.m
(No.1R223)
Ratchet head 12.7
(No.1R224)
Socket 30-78
(No.134847-1)
Hammer case comp.
Fig. 2
Ring spring 11
Flat washer 12
Compression spring 13 Anvil
Steel ball 3.5 (2pcs)
Sleeve
groove
Tapping screw PT3x10
Tapping screw
PT3x16
LED circuit
of Switch unit
Stopper Bumper
Fit Socket 30-78
to the hex portion
of Hammer case
complete.
Hammer case comp.
Ring 41
Internal gear 51
Internal gear case
O ring 46
Assembly of Anvil
and Bit holder section
Hammer mechanism

P 4 / 8
Repair
[3] -2. Hammer Case Complete (cont.)
[3] -3. Housing L/Housing R and Motor Section
Fig. 8 Fig. 9
Fig. 7
DISASSEMBLING
1) Remove parts until Internal gear case is revealed as described in [3] -2.
2) After removing Carbon brushes, remove four M4x12 Pan head screws
that fasten Internal gear case to Housing L and Housing R. (Fig. 7)
Note: Threadlocker is applied to the M4x12 Pan head screws,
It is, therefore, recommended to use impact driver for removal.
3) Unscrew eight PT3x16 Tapping screws, then remove Internal gear case.
Housing R can now be separated from Housing L. (Fig. 8)
4) The inner electric parts can be removed from Housing L. (Fig. 9)
ASSEMBLING
Do the reverse of the disassembling steps.
Note 1: Do not forget to put O ring 46 in the groove on Internal gear case. (Fig. 5)
Note 2: When fastening Gear case complete to Internal gear case, turning Gear case complete counterclockwise
to the recommended torque of 30 - 40N.m. (Refer to Fig. 4.)
Note 3: Stopper is not reversible when fastened to Housing. Be sure to install as illustrated in Fig. 6.
Fig. 6
Stopper
Correct Wrong
Pan head screw
M4x12
Internal gear case
Brush holder
cap
Carbon brush
Housing L Housing L
Housing R
Internal gear case
Motor section
F/R Change lever
Terminal section
Switch unit
(with LED)

P 5 / 8
Repair
DISASSEMBLING
5) Remove the Motor section from Housing L. Then remove Endbell complete from Armature. (Fig. 10)
6) Put the Motor section on a work bench so that the drive end of Armature touches the work bench.
Then separate yoke unit from armature by pulling it down towards the work bench. (Fig. 11)
ASSEMBLING
Fig. 12 Fig. 13
Fig. 10 Fig. 11
Armature
Yoke unit
Endbell complete
Your fingers can be pinched
and injured.
[Wrong][Correct] [Wrong][Correct]
Notch
[3] -3. Housing L/Housing R and Motor Section (cont.)
Yoke unit
1) Assemble the Motor section.
Note 1. Yoke unit is not reversible when assembled to Armature. Be sure to assemble so that the notch in Yoke unit is
positioned on the drive-end of Armature as illustrated to left in Fig. 12. If assembled wrong, the Motor section cannot
be assembled to Housing (L).
Note 2. Because Yoke unit is a strong magnet, when assembling Armature to Yoke unit, be sure to hold the commutator
portion as illustrated to left in Fig. 13. Do not hold the Armature core as illustrated to right or your fingers will be
pinched between Yoke unit and the fan of Armature that is pulled strongly by the magnet force.
Fig. 14 Fig. 15
2) Assemble Rubber pin 4 to both Housing L and Housing R as illustrated in Fig. 14.
Note: Make sure that the Rubber pins are in place on Housing L and R before assembling the housings together.
3) Mount the Motor section on housing L with the projection on Housing L fit in the notch of Yoke unit. (Fig. 15)
notch
projection
Housing L
Rubber pin 4
Housing L
Housing R
Switch

P 6 / 8
Repair
ASSEMBLING
[3] -3. Housing L/Housing R and Motor Section (cont.)
4) Assemble F/R Change lever to switch unit with the projection
on Switch unit fit in the loop portion of F/R Change lever.
(Fig. 16)
5) Mount Switch unit and the Terminal section on Housing L.
6) Assemble Housing R to Housing L. ( Fig. 8)
7) Secure Internal gear case to Housing with four M4x12 Pan
head screws. (Fig. 7)
Note : If you reuse removed M4x12 Pan head screws, apply
threadlocker to the screws. Recommended threadlocker are
Threebond 1321B/ 1342, Loctite 242
Fig. 16
F/R Change lever
projection
loop portion
DISASSEMBLING
[3] -4. Hammer Mechanism and Spindle Section
1) Remove Hammer case complete, and take out the Hammer mechanism as described in [3] -2.
2) Press down Hammer to the full with Large gear extractor (No.1R045) by turning the handle in the direction
of the black arrow. Then adjust the notch for Steel ball insertion to the top of the cam groove on Spindle
by turning the handle in the opposite direction. (Fig. 17)
3) Remove two 5.6 Steel balls from Spindle using tweezers or a slotted screwdriver magnetized with Screwdriver
magnetizer (No.1R288). (Fig. 17)
4) Turn over the Hammer mechanism as illustrated in Fig. 18, then turn the handle in the direction of the black arrow
to release the Hammer mechanism.
Caution: Do not hold gear extractor as illustrated in Fig. 17 when releasing the Hammer mechanism.
Failure to follow this instruction could cause most of twenty-four 3.5 steel balls to fall out of Hammer.
Spindle
top of cam groove
on Spindle
opening for Steel
ball insertion
Hammer
Steel ball 5.6
Fig. 17 Fig. 18

P 7 / 8
Repair
[3] -4. Hammer Mechanism and Spindle Section (cont.)
DISASSEMBLING
Fig. 19 Fig. 20
5) Now Hammer mechanism can be disassembled as illustrated in Fig. 19.
6) After removal of Flat washer 24, twenty-four 3.5 Steel balls can be removed from Hammer. (Fig. 20)
Spur gear 22
Flat washer 12
Pin 5
Hammer
Hammer
Compression
spring 25
Cup
washer 14
Steel ball 3.5
(24 pcs.)
Spindle
Flat washer 24
Spindle section
ASSEMBLING
Fig. 21
Hammer
1) Put twenty-four 3.5 Steel balls into the groove of Hammer. (Fig. 21)
Note: As illustrated to right in Fig. 21, the groove is designed to have a space equivalent to one 3.5 Steel ball
when twenty-four 3.5 Steel balls are correctly installed.
2) Then do the reverse of the disassembling steps.
Hammer
Steel ball 3.5
(24 pcs)
space equivalent to
one 3.5 Steel ball
Steel ball 3.5 (24 pcs)

P 8 / 8
Circuit diagram
Wiring diagram
Color index of lead wires' sheath
Black
Red
White
FET
(Field Effect Transistor)
Endbell
LED circuit section
of Switch
Switch
Endbell complete
Motor
Switch
1) Before Installation of Internal Electric Parts
FET
Rib
2) After Installation of Internal Electric Parts
LED circuit section
of Switch
Put the lead wires (black, red) of LED
deep in these lead wire holders.
Boss
Place the slack of LED
lead wires here.
Route the Endbell lead wire (black)
between FET and the rib.