Service Manuals, User Guides, Schematic Diagrams or docs for : MAKITA JR3050T-TE
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T ECHNICAL INFORMATION
Models No. JR3050T
PRODUCT
P 1 / 15
Description Recipro Saw
L
CONCEPT AND MAIN APPLICATIONS
Model JR3050T has been developed as a successor model of
Model JR3000V/VT, featuring the following main advantages;
H
1. Cutting efficiency higher than competitions and the
predecessor models of Makita recipro saws. W
2. Great convenience provided by;
*Tool-less blade change Dimensions: mm (")
*Tool-less adjustable heavy duty shoe
Length (L) 452 (17-3/4)
Width (W) 97 (3-13/16)
Height (H) 170 (6-11/16)
Specification
Continuous Rating (W)
Voltage (V) Current (A) Cycle (Hz) Input Output Max. Output(W)
110 9.0 50 / 60 940 390 950
120 9.0 50 / 60 1,010 460 950
220 4.8 50 / 60 1,010 550 950
230 4.6 50 / 60 1,010 550 950
240 4.4 50 / 60 1,010 550 950
Stroke per minute: min-1 0 - 2,800
Length of Stroke: mm (") 28 (1-1/8)
*Wood: mm (") 255 (10)
Capacity
Pipe: dia. mm (") 130 (5-1/8)
Variable speed control Yes
Net weight: kg (lbs) 3.2 (7.1)
Europe: 4.0 (13.1)
Power supply cord: m (ft) Australia: 2.0 (6.6)
Other countries: 2.5 (8.2)
*when cutting with the supplied 300mm (11-3/4") length recipro saw blade.
Standard equipment
For North America: For countries other than North America:
Recipro saw blade for steel ...................... 1 Recipro saw blade No.21 for steel ................................. 1
Recipro saw blade for composites.......... 1 Recipro saw blade No.22 for steel ................................. 1
Recipro saw blade No.23 for wood and plywood .......... 1
Note: The standard equipment for the tool shown above may differ by country.
Optional accessories
Recipro saw blade No.21 for steel Recipro saw blade No.23 for wood and plywood
Recipro saw blade No.22 for steel Recipro saw blade No.23B for wood and plywood
Recipro saw blade No.24 for steel
P 2 / 15
Features and benefits
Cutting Efficiency Higher Than the Competitions
and the Predecessor Models of Makita Recipro Saws Large Trigger Switch
See the comparison graph on next page. Features variable speed for
accurate cutting.
Tool-less Blade Change
Soft Grip
Allows faster installation and
removal. For excellent control
with comfort
Tool-less Shoe Adjustment Dustproof and Dripproof Design
You can do shoe adjustment by 1. Front side of the slider is protected against saw dust by;
simply pushing a button. 1) Air from the fan that sweep saw-dust
2) X ring and Felt that seal out saw-dust from the gear
room
2. Gear room is also protected against water drops by
placing a rubber seal ring on the matching surface
between Gear housing and Gear housing cover.
Comparison of products
Model No. Makita A B C D
Specifications JR3050T JR3000VT A B C D
Rated amperage for
9 6 10 7.5 9 9
North America: A
Power input: W a) 1,010 590
Strokes per min:
0 - 2,800 0 - 2,300 0 - 2,800 0 - 2,400 0 - 2,600 0 - 2,800
spm.= min.-1
Length of Stroke: mm (") 28 (1-1/8) 30 (1-3/16) 20 (3/4) 28 (1-1/8) 28 (1-1/8) 28 (1-1/8)
Variable speed control
Yes Yes Yes Yes Yes Yes
with switch trigger
Tool-less Blade change Yes Yes Yes Yes Yes Yes
system Shoe adjustment Yes Yes Yes Yes Yes Yes
Soft grip Yes No No No Yes Yes
No load 18.5 19.2 17.0 16.4 28.3 10.8
Vibration: m/s2
b) Loaded 21.1 19.6 18.3 19.6 28.0 15.0
Double insulation Yes Yes Yes Yes Yes Yes
Power supply cord: m (ft) c) 2.5 (8.2) 2.5 (8.2) 2.5 (8.2) 2.5 (8.2) 2.5 (8.2) 3.5 (11.5)
Length: mm 452 460 450 440 440 480
(') (17-3/4) (18-1/8) (17-3/4) (17-1/4) (17-1/4) (18-7/8)
Dimensions
Width: mm 97 90 92 95 100 87
(') (3-13/16) (3-1/2) (3-5/8) (3-3/4) (4) ( 3-7/16 )
Height: mm 170 159 168 173 166 150
(') (6-11/16) (6-1/4) (6-5/8) (6-13/16) (6-1/2) (5-7/8)
Net weight: Catalog 3.2 (7.1) 3.1 (6.8) 3.1 (7.0) 3.0 (6.7) 3.3 (7.5) 3.2 (7.1)
kg(lbs) Measured 3.2 (7.1) 3.1 (6.8) 2.9 (6.4) 3.1 (6.8) 3.6 (7.9) 3.6 (7.9)
Blade Yes, d) 3 pcs Yes, 3 pcs Yes, 2 pcs Yes, 1 pc Yes, 1 pc Yes, 3 pcs
Standard
Plastic case Yes Yes Yes Yes Yes No
equipment
Hex wrench No No No No No Yes
a) Taiwan and low voltage for Great Britain: 940W
b) When cutting 2"x10" SPF timber
Note: The vibration values appeared in the instruction manuals for European countries are different from these values.
c) Europe: 4.0m (13.1ft), Australia: 2.0m (6.6ft)
d) 2 pcs. for North America
P 3 / 15
Comparison of products
Comparison of Cutting Speed
[1] Wood Cutting
Test conditions:
Cut a piece of 2"x10" SPF lumber with;
A) an identical recipro saw blade (Makita blade No.23)
B) the recipro saw blade supplied with each model,
and measured the time required to cut through the test material.
Result:
See the charts below.
Note: Numbers in the chart below are relative values when the capacity of the competitor A's model A is indexed at 100.
A) With Makita Blade No.23
slow fast
Makita JR3050T 135
Makita JR3000VT 110
Competitor A Mod. A 100
Competitor B Mod. B 120
Competitor C Mod. C 130
Competitor D Mod. D 150
B) With the Recipro Saw Blade Supplied with Each Model
slow fast
Makita JR3050T* 160
Makita JR3050T** 210
Makita JR3000VT 170
Competitor A Mod. A 100
Competitor B Mod. B No blade for wood cutting is supplied with the tool.
Competitor C Mod. C No blade for wood cutting is supplied with the tool.
Competitor D Mod. D 145
*Cut with Makita blade (P/No.723080-6), which is supplied with JR3050T for North American countries.
**Cut with Makita blade No.23, which is supplied with JR3050T for all countries except North American countries.
P 4 / 15
Comparison of products
Comparison of Cutting Speed
[1] Metal Cutting
Test conditions:
Cut a 1" diameter carbon steel pipe with;
A) an identical recipro saw blade (Makita blade No.22)
B) the recipro saw blade supplied with each model,
and measured the time required to cut through the test material.
Result:
See the charts below.
Note: Numbers in the chart below are relative values when the capacity of the competitor A's model A is indexed at 100.
A) With Makita Blade No.22
slow fast
Makita JR3050T 190
Makita JR3000VT 160
Competitor A Mod. A 100
Competitor B Mod. B 90
Competitor C Mod. C 235
Competitor D Mod. D 110
B) With the Recipro Saw Blade Supplied with Each Model
slow fast
Makita JR3050T* 230
Makita JR3050T** 185
Makita JR3000VT 155
Competitor A Mod. A 100
Competitor B Mod. B 150
Competitor C Mod. C 200
Competitor D Mod. D 140
*Cut with Makita blade (P/No.723081-4), which is supplied with JR3050T for North American countries.
**Cut with Makita blade No.22, which is supplied with JR3050T for all countries except North American countries.
P 5 / 15
Repair
CAUTION: Remove the saw blade from the machine for safety before repair/ maintenance !
[1] NECESSARY REPAIRING TOOLS
Code No. Descriptions Purpose
1R291 Retaining ring S and R Pliers Installing/removing Retaining rings S-18 and S-12
--- Recipro saw blade Setting Pin 3 (of the blade clamp section) in place
1R250 Round bar for arbor 26-100 Press-fitting Oil seal 14
1R327 Torx screwdriver T25H120 Installing/removing Torx countersunk head screw
1R314 Torx bit VT-25 Installing/removing Torx countersunk head screw
1R232 Pipe 30 Installing/removing Needle bearing 1216
1R245 Round bar for arbor 16-100 Installing/removing Needle bearing 1216
1R269 Bearing extractor (small) Removing Ball bearing 6001DDW
[2] LUBRICATION AND ADHESIVE
See Fig. 1 below.
Lubrication: Apply Makita Grease N. No.1 to the portions designated with the mark of .
Adhesive: Apply Threebond 1321B/1342 or Loctite 242 to the portions designated with the mark of .
Item No. Part description Where to lubricate or apply adhesive
[Lubrication]
6 Shoulder pin 5 The surface which contacts the hole on Guide sleeve
18 Gear housing cover The portion where Slider reciprocates
29 Slider The portion where Plane bearings contact when Slider reciprocates
39 Flat washer 18 The portion where Gear complete contacts
The portion where Gear complete and Armature gear rotate
47 Gear housing
Pin 12 to which Needle bearing 1216 is assembled
[Adhesive]
28, 32 Four M5x16 Pan head screws Threaded portion (in order to prevent Plates from loosening)
Four M5x14 Torx countersunk
33, 35 Threaded portion (in order to prevent Gear plates from loosening)
head screws
46 Three M5x10 Pan head screws Threaded portion (in order to prevent Bearing retainer from loosening)
Fig. 1
Gear plate Gear complete
Guide sleeve
Plane bearing Needle bearing 1216
Pin 12
Plane bearing Bearing
retainer
P 6 / 15
Repair
[3] DISASSEMBLY/ASSEMBLY
[3] -1. Disassembling/ Assembling Blade Clamp Section
DISASSEMBLING Fig. 2
1) Remove shoe. If the blade clamp section is positioned inside Blade clamp section
gear housing, pull it out of gear housing. (Fig. 2)
2) After removing protector, remove retaining ring S-18 with
Retaining Ring S and R Pliers (No.1R291).
Then remove the following parts:
Driving sleeve, Shoulder pin 5, Compression spring 6,
Pin 3 (of 6mm length), Guide sleeve, Driving sleeve guide
Now sleeve appears. (Fig. 3 ) Shoe
Fig. 3
Protector Shoulder pin 5
Retaining ring S-18 Compression spring 6
Driving sleeve Driving sleeve guide
Pin 3
(of 6mm length)
Guide sleeve
Sleeve
3) Because sleeve is locked, release it Fig. 4
by pulling in the direction of the blade
installation side. (Fig. 4) [Sleeve Locked] [Sleeve Released]
Pin 3 (of 19.8mm length) (Pull in the direction of
the blade installation side.)
Sleeve
groove
Pin 3 is positioned
at the lower end of
the groove on sleeve
when sleeve is released.
4) While putting your finger on the top of slider to close the slit of slider, remove pin 3 (of 19.8mm length) by pushing
with a thin bar. (Fig. 5)
Note: Be sure to put your finger on the top of slider or push plate will pop out from the slit of slider.
5) Remove sleeve and torsion spring 17 from slider, then take push plate and compression spring 2 out of the slit of
slider. (Fig. 6)
Fig. 5 Fig. 6
Slider
Sleeve Push plate
thin bar
Torsion Compression
spring 17 spring 2
Sleeve Slider
Pin 3
(of 19.8mm length)
P 7 / 15
Repair
[3] -1. Disassembling/ Assembling Blade Clamp Section (cont.)
ASSEMBLING
1) Assemble torsion spring 17 to slider as illustrated in Fig. 7.
Important: Be sure that torsion spring 17 is not reversible when assemble to slider.
Follow the instruction described in Fig. 7.
2) Insert compression spring 2 into the slit of slider.
3) Install sleeve on slider and lock pin 3 temporarily by turning sleeve clockwise. (Fig. 8)
Fig. 7 Fig. 8
Torsion spring 17 This end has to
be positioned Slider
Insert this end on the cap side. Pin 3
into the slit of (of 19.8mm length)
slider. Sleeve
Cap
Shift button [Side view of cap]
Slider Cap has an insert hole
for shift button.
4) Mount guide sleeve temporarily, and put push plate into the slit of slider as illustrated to left in Fig. 9.
Important: Be sure that push plate is not reversible when installed.
While pushing push plate straight into slider with recipro saw blade, insert pin 3 (of 19.8mm length) through the hole
of push plate as illustrated to right in Fig. 9. And then remove guide sleeve.
Note: Guide sleeve is used as a jig, not assembled to slider yet in this step.
Fig. 9
This projection must While pushing recipro saw blade,
face the blade side.
Push plate
Recipro saw blade
Pin 3
(of 19.8mm length)
Guide sleeve
insert pin 3 through
the hole of push plate.
P 8 / 15
Repair
[3] -1. Disassembling/ Assembling Blade Clamp Section (cont.)
5) While fitting the two projections of driving sleeve in the concavities of sleeve, push driving sleeve into gear housing
housing. At this time, turn driving sleeve clockwise so that the protruding portion of driving sleeve cannot be inter-
fered by gear housing. After driving sleeve is pushed into gear housing to the full, turn driving sleeve clockwise to
lock pin 3 in place. (Fig. 10)
Note: Driving sleeve is used as a jig to lock pin 3 in place, not assembled to slider in this step.
6) Remove driving sleeve.
Fig. 10
Driving sleeve
Driving sleeve Concavities
Sleeve
Projections Sleeve
7) Assemble the following parts to slider (Refer to Fig. 3.):
Driving sleeve guide, Guide sleeve, Pin 3 (of 6mm length), Shoulder pin 5, Compression spring 6
8) Put driving sleeve over guide sleeve and secure it with retaining ring S-18 using 1R291. Then cover driving sleeve
with protector. (When installing driving sleeve, fit its projections in the concavities of sleeve and driving sleeve guide.)
[3] -2. Replacing Shift Button and Cap
DISASSEMBLING Fig. 11
Shift button can be removed from gear housing cover by Shift button
inserting a thin bar into the hole of cap and push the bar.
(Fig. 11) Cap
thin bar
ASSEMBLING Fig. 12
1) Replace cap by new one because removal of shift button
damages the inside surface of cap. Slider
2) From shift button, remove all the plastic dust scraped off
the removed cap. Insert shift button through the holes in
the both sides of gear housing cover.
And then press-fit shift button in the new cap by hand.
Important: Shift button
Be sure to assemble shift button to gear housing cover Cap
so that the two notches of shift button face the side
opposite to slider as illustrated in Fig. 12.
These notches of shift button must
face the side opposite to slider.
P 9 / 15
Repair
[3] -3. Disassembling/ Assembling Slider
DISASSEMBLING
1) Remove shoe and insulation cover.
2) Remove the blade clamp section. (Refer to [3] -1.)
3) Separate gear housing cover from gear housing by removing two M5x25 pan head screws
and two M5x35 pan head screws.
4) Remove two plates from gear housing cover by unscrewing four M5x16 pan head screws. (Fig. 13)
5) From slider, remove the plane bearing 14 on the motor housing side.
6) Move slider towards the motor housing side. Then remove slider from gear housing cover by pulling in the direction
designated by the gray arrow. (Fig. 14)
Fig. 13 Fig. 14
Pan head screw M5x16 While lifting up slider,
(adhesive-coated type) Move slider towards pull it off from gear housing
the motor housing side. cover.
Plate
Plate
Slider
Gear housing cover
ASSEMBLING
Do the reverse of the disassembling steps.
Notes:
1) Apply Makita grease N No.1 to slider as illustrated in Fig. 15 in order to lubricate X ring 14 and plane bearings 14.
2) Plane bearings 14 are not reversible when assembled to slider. Be sure to install them as illustrated in Fig. 16.
Fig. 15 Fig. 16
Apply Makita grease N No. 1 here.
brim brim
(Blade side) (Motor housing side)
3) Do not forget to install seal ring when assembling gear housing cover to gear housing.
P 10/ 15
Repair
[3] -4. Replacing Oil Seal 14 and X Ring 14
DISASSEMBLING
1) Separate gear housing cover from gear housing as described in 1) to 3) of [3] -3.
2) Remove oil seal 14 by hitting from the motor housing side using slotted screwdriver and plastic hammer.
Then remove X ring 14 by pushing with finger. (Fig. 17)
Fig. 17
(Motor housing side)
Slotted screwdriver
Gear housing
cover
X ring 14
X ring 14
Oil seal 14
(Blade side)
ASSEMBLING
Put X ring 14 in place. And then press-fit oil seal 14 using arbor press and Round bar for arbor 26-100 (No.1R250)
as illustrated in Fig. 18.
Important:
1. Oil seal 14 is not reversible when assembled to gear housing cover. Be sure to set it so that the rubber lip faces
the blade side as illustrated in Fig. 19.
2. Install oil seal 14 so that it is flush with the surface of gear housing cover. (Fig. 19)
3. Do not reuse the removed oil seal because the rubber lip is damaged when removed from gear housing cover.
Fig. 18 Fig. 19
Arbor press
(Blade side)
Round bar for
arbor 26-100
rubber lip Oil seal 14
(No.1R250)
Oil seal 14
X ring 14
X ring 14
Gear housing cover
(Motor housing side)
P 11/ 15
Repair
[3] -5. Gear Complete
DISASSEMBLING
1) Separate gear housing from gear housing cover as described in 1) to 3) of [3] -3.
2) Remove two gear plates from gear housing by unscrewing four M5x14 torx countersunk head screws (adhesive-coated)
with Torx bit VT-25 (No.1R314) or Torx screwdriver T25H120 (No.1R327). (Fig. 20)
Then remove gear complete from gear housing. (Fig. 21)
Fig. 20 Fig. 21
Torx countersunk Gear complete Needle bearing 1216
head screw M5x14
Gear plate (4 pcs)
(2 pcs) Flat washer 18
Gear complete Pin 12
3) Put gear complete on Pipe 30 (No.1R232), and place Fig. 22
Round bar for arbor 16-100 (No.1R245) on needle
bearing 1216. And press out needle bearing 1216 Arbor press
as illustrated in Fig. 22.
No.1R245 Needle bearing 1216
ASSEMBLING
Do the reverse of the disassembling steps.
Note:
1. Before assembling gear complete to gear housing, Gear complete
apply about 1g of Makita grease N No.1 to flat washer 18
and pin 12 respectively. ( Refer to Fig. 20.) No.1R232
2. Apply adhesive to four M5x14 torx countersunk head screws.
[3] -6. Replacing Armature
1) Remove carbon brushes, shoe and insulation cover. Fig. 23
2) Remove gear housing cover from gear housing as described Pan head screw M5x10 (3 pcs)
in 1) to 3) of [3] -3.
3) Separate gear housing from motor housing by unscrewing Armature
four M5x35 tapping screws.
4) Remove baffle plate from gear housing. then remove
armature from gear housing by removing three M5x10 pan
head screws (adhesive-coated) with impact driver. (Fig. 23)
In this step, ball bearing 6001DDW and bearing retainer are
still assembled to armature.
Note: Apply adhesive to three M5x10 pan head screws
when assembling. Bearing retainer
5) Remove retaining ring S-12 from armature using Retaining ring S and R pliers (No.1R291), then ball bearing
6001DDW using Bearing extractor (No.1R269). Now bearing retainer can be removed from armature. (Fig. 24)
Fig. 24
Bearing retainer
Ball bearing 6001DDW
Retaining ring S-12
P 12/ 15
Circuit diagram
Taiwan, and low voltage of Great Britain
Color index of lead wires' sheath
Black
Clear Choke coil
Orange Polyolefin heat-shrink tube
Purple
Field core
Noise
suppressor
*Left
Field *Right
Choke coil
Switch
Purple
lead wire
*Right
Orange
lead wire
*Left
All other countries and areas
Color index of lead wires' sheath
Black
Noise
suppressor
*Left *Right
Field
*Right
*Left
P 13/ 15
Wiring diagram
[1] Protecting the Interconnecting Lead Wire with Heat-Shrink Tube
In case that noise suppressor is used, protect the lead wire that interconnects between noise suppressor and field core
using polyolefin heat-shrink tube. Be sure to cover the crimped portion as illustrated in Fig. 25.
Fig. 25
[Before shrinkage] [After shrinkage]
crimped portion Polyolefin heat-shrink tube Polyolefin heat-shrink tube
(before shrinkage) (after shrinkage)
Non-insulated Lead wire (clear) that interconnects
terminal between noise suppressor and
field core
[2] Wiring in Motor Housing
[2] -1. Front Side; Routing the Lead Wire Interconnecting Between Noise Suppressor and Field Core
Fig. 26
(View from baffle plate side)
Secure the non-insulated terminal
of the interconnecting lead wire
with the screw that fastens field
to motor housing.
Polyolefin heat-shrink tube
Lead wire (clear) interconnecting
between noise suppressor and
field core Route the lead wire
through this opening.
P 14/ 15
Wiring diagram
[2] Wiring in Motor Housing (cont.)
[2] -2. Rear side
Note: Choke coils are not used except for the following countries:
Taiwan, low voltage of Great Britain
Fig. 27
Lead wire from choke coil Field lead wire (purple)
to brush holder (purple)
Lead wire holder
Opening for lead wires
1) Route the following lead
wires through the opening:
*Field lead wire (purple)
*Lead wire from choke coil
to brush holder (purple)
Field lead wires 2) Fix the two lead wires with
(black) the lead wire holder.
Be sure that the lead wires
Field lead wire are tight between the opening
(orange) and the lead wire holder.
Lead wire from
choke coil to Lead wire (clear)
brush holder interconnecting between
(orange) noise suppressor and
Route the following lead wires
field core
through this opening:
*Field lead wire (orange)
*Lead wire from choke coil
to brush holder (orange)
*Two field lead wires (black)
P 15/ 15
Wiring diagram
[3] Wiring in Handle
Note: Choke coils are not used except for the following countries:
Taiwan, low voltage of Great Britain
Fix lead wires with
lead wire holder. Put insulated connector here.
Route the lead wires
rib of choke coils
between ribs.
Choke coil
Put noise suppressor
in this space.
1) Route the lead wires from
choke coil to brush holder
through the opening.
2) Fix lead wires with the
lead wire holder.
Be sure that lead wires are
Fix lead wires with tight between the opening
Put insulated connector here. lead wire holder. and the lead wire holder.
When choke coils are used,
put the vinyl tube on choke coils,
and fix it with two ribs as illustrated
to right.
Vinyl tube
rib
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