Makita GA7020R Technical Information page 6

R
epair
[3] DISASSEMBLY/ASSEMBLY
[3]-2. Large spiral bevel gear, Ball bearing 6203DDW, Ball bearing 6000LLB
DISASSEMBLING
(1) Large spiral bevel gear can be disassembled as illustrated in Figs. 10, 11R and 12.
Fig. 10
Remove Bearing box from Gear
housing complete.
M6x22 Hex socket
head bolt (4pcs.)
Fig. 11R
Correct setting
Receive the cylindrical portion
of Bearing box with Turn table
of arbor press.
Cylindrical portion
Turn table of Arbor press
Fig. 12
Remove Spindle ass'y by pressing with Arbor press.
Ball bearing 6203DDW in Bearing box has a damage in this step.
Do not reuse Ball bearing 6203DDW after removal of Spindle ass'y.
Spindle ass'y
Remove Ball bearing 6000LLB
with 1R269.
1R269
Ball bearing
6000LLB
Fig. 11F
The brim portion of Bearing
box is received with Turn table
of arbor press.
Bearing box
Large spiral bevel gear
Bearing box
Enlarging the clearance of Ring spring 11
with 1R004, lift up the opposite side
with slotted screwdriver.
Ring spring 11 can be removed.
Slotted screwdriver
Ring spring 11
The following wrong settings causes deforming.
Turn Table of Arbor Press
Remove Bearing retainer 50 by
unscrewing three M5x16 Pan
head screw.
Ball bearing
6203DDW
Bearing
retainer 50
Labyrinth ring portion of Spindle
ass'y is received with Turn table
of arbor press.
M5x16 Pan head
screw (3pcs.)
P 6/ 9
1R004