Makita JR3051T Repair Manual

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1 CONTENTS
1 CONTENTS ................................................................................................................................................................................. 2
2 CAUTION .................................................................................................................................................................................... 3
3 NECESSARY REPAIRING TOOLS ........................................................................................................................................... 3
4 LUBRICANT AND ADHESIVE APPLICATION ...................................................................................................................... 4
5 TIGHTENING TORQUE SPECIFICATIONS ............................................................................................................................ 4
6 REPAIR ........................................................................................................................................................................................ 5
6-1 Hook section ........................................................................................................................................................................ 5
6-1-1 Disassembling ............................................................................................................................................................. 5
6-1-2 Assembling .................................................................................................................................................................. 5
6-2 Shoe section ......................................................................................................................................................................... 6
6-2-1 Disassembling ............................................................................................................................................................. 6
6-2-2 Assembling .................................................................................................................................................................. 6
6-3 Blade clamp section ............................................................................................................................................................. 7
6-3-1 Disassembling ............................................................................................................................................................. 7
6-3-2 Assembling .................................................................................................................................................................. 9
6-4 Carbon brush section .......................................................................................................................................................... 13
6-4-1 Disassembling ........................................................................................................................................................... 13
6-4-2 Assembling ................................................................................................................................................................ 13
6-5 Insulation cover section ...................................................................................................................................................... 14
6-5-1 Disassembling ........................................................................................................................................................... 14
6-5-2 Assembling ................................................................................................................................................................ 14
6-6 Switch/ Motor section ........................................................................................................................................................ 15
6-6-1 Disassembling ........................................................................................................................................................... 15
6-6-2 Assembling ................................................................................................................................................................ 18
6-7 Armature/ Gear section ...................................................................................................................................................... 21
6-7-1 Disassembling ........................................................................................................................................................... 21
6-7-2 Assembling ................................................................................................................................................................ 24
6-8 Slider section ...................................................................................................................................................................... 26
6-8-1 Disassembling ........................................................................................................................................................... 26
6-8-2 Assembling ................................................................................................................................................................ 28
7 CIRCUIT DIAGRAM ................................................................................................................................................................ 30
8 WIRING DIAGRAM ................................................................................................................................................................. 31
8-1 Field section ....................................................................................................................................................................... 31
8-2 Handle section .................................................................................................................................................................... 32

Makita JR3051T Specifications

General

Power Source	Corded
Amperage	12 A
Strokes Per Minute	0-3, 000 SPM
Tool Weight	7.3 lbs
Voltage	120 V
Tool Length	17-3/4 inches
Max. Cutting Capacity in Wood	10 inches
Max. Cutting Capacity in Steel Pipe	5-1/8 inches