Makita BTW151 Technical Information page 6

R
epair
< 1 > Disassembling housing R and L
Remove hammer case from housing R and L. So, housing R can be separated from housing L.
Anvil can be disassembled from hammer case.
< Note > When assembling anvil to hammer case, put 0.1g MAKITA grease N No.1 to the cylindric part of anvil.
< 2 > Disassembling hammer
(1) Press down hammer with 1R045: Large gear extractor
by turning the handle.
(2)Adjust the opening for steel ball inserting to the cam groove top of spindle.
(3)Take off 2 pcs. of steel balls 5.6 from spindle.
< Note > 25 steel balls 3.5 are installed in hammer.
Check the quantity when assembling.
1R045 Large gear extractor
(4) Apply grease to the position No. 1, 2, 3 and 4 as listed below, when assembling.
MAKITA
grease N No.1
(1) 0.5g
(2)
0.5g
(3)
1.0g
(4)
< Note > Make sure that 25 pcs.of steel
balls 3.5 are assembled in hammer,
when assembling.
Steel ball 5.6 x 2
Steel ball 3.5 x 25
(3) to Steel ball 5.6 x 2
(2) to Steel ball 3.5 x 25
Molybdenum
di-sulphide lubricant
0.2g
0.6g
0.2g
Cam groove top
of spindle
Opening for steel
ball inserting
Fig. 1
Fig. 3
P 6 / 8
Spindle
Hammer
(1) to Spindle
Hammer
(4) to Spur gear 22
Ball bearing 6901LLB