Necessary Repairing Tools - Makita UH7580 Technical Information

R
epair
CAUTION: Unplug the machine for safety before repair/ maintenance !

[1] NECESSARY REPAIRING TOOLS

Code No. Description
1R003 Retaining ring pliers ST-2N Removing Lifter section
1R212 Tip for Retaining ring pliers Modular use with 1R003
1R263 Bearing extractor
[2] LUBRICATION
Apply Makita grease N. No.2 to the following portion to protect parts and product from unusual abrasion. Refer to Fig. 5.
1) Gear room (6g: Refer to Fig. 5.)
2) Contact portion of Shear blade ass'y and Crank (3g: Refer to Fig. 7)
[3] DISASSEMBLY/ASSEMBLY
[3] -1. Carbon brush
REPLACING
Remove two 4x18 Tapping screws and Top cover from Housing set. (Fig. 1)
Pick out two Carbon brushes using thin slotted screwdriver. (Fig. 2)
Fig. 1
4x18 Tapping
screw (2pcs.)
Top cover
Housing set
[3] DISASSEMBLY/ASSEMBLY
[3] -2. Shear blade ass'y and Gear ass'y
DISASSEMBLING
1) Turn the machine upside down and keep it in a horizontal position by the use of a horizontal portion of Front grip.
2) Remove four M4x25 Pan head screws and Under cover. (Fig. 3)
Note: Set Blade cover in place to prevent being injured as illustrated in Fig. 3.
3) Remove Gear housing cover by levering with two 1R263 or slotted screwdrivers. (Fig. 4)
4) Turn crank portion with slotted screwdriver inserted to the groove on Spindle. (Fig.5) Two oval holes of Shear blades
and the crank portion of Gear ass'y have to be aligned as illustrated in Fig. 5.
Note: It is possible that Two oval holes of Shear blades and the crank portion of Gear ass'y do not be aligned because
Gear ass'y is in locked position by Pin 5. Turn Spindle counterclockwise with strong force to release the locked
condition. (The spring and the lock washer in Gear ass'y will be slid, and Pin 5 will be out of the locked position.)
Fig. 3
Blade cover
Under cover
Front grip
Fig. 5
groove on Spindle of Gear ass'y
Blade cover
Oval holes of
Shear blades
(one hole each)
Use for
Removing Gear housing cover
Fig. 2
Carbon brush (2pcs.)
M4x25 Pan head
screw (4pcs.)
Slotted
screwdriver
Housing set
Thin slotted screwdriver
Fig. 4
1R263 or Slotted screwdriver (2pcs.)
Tangential lines of Crank portion and straight lines
of Shear blades' oval holes
90 90
Viewed from the upper side
P 2/ 7
Gear housing cover
Center line of Housing set
and Shear blade ass'y