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R
epair
ASSEMBLING
[1] Tightening Tapping Screws
Tighten the following Tapping screws to each recommended torque (Fig. 11);
(1) PT3x16 (8 pcs) for fastening Housing halves together ...... 1.1 - 1.3 N.m (11 - 13 kgf.cm)
(2) PT3x16 for fastening Stopper to Housing .......................... 0.7 - 0.9 N.m (7.1 - 9.2 kgf.cm)
(3) PT3x10 for fastening LED circuit to to Housing ............... 0.7 - 0.9 N.m (7.1 - 9.2 kgf.cm)
(4) ST3x8 for fastening FET spacer to Yoke unit ..................... 1.1 - 1.5 N.m (11 - 15 kgf.cm)
Fig. 11
LED circuit
(2)
Stopper
Housing (L)
[2] Fastening Internal Gear Case to Housing
When fastening Internal gear case to Housing, be sure to
follow the instructions below.
*Do not reinstall M4x12 Pan head screws removed from
Internal gear case because they are adhesive-coated screws.
Always use brand-new M4x12 pan head screws.
*Tighten four M4x12 pan head screws to the recommended
torque of 0.88 - 1.8 N.m (9.0 - 18 kgf.cm).
Note: Remember to use a criss-cross tightening pattern.
[3] Lubrication of Hammer Section
Before assembling, apply Makita grease N. No.2 to the
following parts (Fig. 13);
(1) Top of the Spindle where Anvil contacts ........ 0.5 g
(2) Steel ball 5.6 (2 pcs) ....................................... 0.5 g
(3) Steel ball 3.5 (24 pcs) ..................................... 0.5 g
(4) Spur gear 22 (2 pcs) ........................................ 2.0 g
(3)
(1)
Housing (R)
(Fig. 12)
(4)
Fig. 12
Internal gear case
Pan head screw M4x12
Fig. 13
(1)
P 4 / 7
Yoke unit
FET spacer
FET
(Field effect
transistor)
(2)
(3)
(4)
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