Reassembly; Tightening Torque; Wiring Diagram - Hitachi SP 18VA Technical Data And Service Manual

9-4. Reassembly

Perform reassembly in the reverse order of disassembly while observing the given precautions and taking care of
the following points.
(1) After disassembly, thoroughly remove old grease from the inside of the Gear Cover Ass'y [5], and insert 25 g
of new grease (Nippeco JF-375, Code No. 930036, is recommended.) prior to reassembly. When inserting
grease, apply it to the pinion gear teeth surfaces, and to the needle bearing inside the gear cover.
(2) When replacing the ball bearing on the commutator side of the Armature Ass'y [13], be very careful to ensure
that the Dust Seal [34] is assembled in the proper direction. The Dust Seal [34] plays an important role in
dustproofing of the ball bearing, and must be replaced with a new one if disassembled.
(3) Apply Three Bond TB 1406 Screw Locking Agent to the following screws.
Three Seal Lock Screws (W/Sp. Washer) M4 x 10 [1] which fix Bearing Cover (B) [12] in place.
Three Seal Lock Screws (W/Sp. Washer) M4 x 10 [23] which fix Bearing Cover (A) [24] in place.
Four Seal Lock Screws (W/Sp. Washer) M5 x 14 (Black) [31] which fix Packing Gland [30] in place.

9-5. Tightening Torque

D4 Tapping Screws (W/Flange) [53], [52], [43]
D5 Tapping Screws (W/Flange) [51] [2]
D5 Hex. Hd. Tapping Screw [15]
M4 Seal Lock Screw (W/Sp. Washer) [23], [1]
M5 Seal Lock Screw (W/Sp. Washer) [31]

9-6. Wiring Diagram

Armature
Ass'y [13]
• • • • • • • • • • • • • • • • • • • • • • •
• • • • • • • • • • • • • • • • • • • • • • • • • • • • • •
• • • • • • • • • • • • • • • • • • • • • • • • •
• • • • • • • • • • • • • • • • • • • • • • • • • • • • • •
White
or blue
White
or blue
Stator Ass'y [16]
--- 11 ---
2.0 0.5 N m (20
•
2.9 0.5 N m (30
•
1.8 0.4 N m (18
•
3.4 0.7 N m (35
•
Controller Switch [42]
5 kgf cm, 1.5 0.4 ft-lbs.)
•
5 kgf cm, 2.2 0.4 ft-lbs.)
•
4 kgf cm, 1.3 0.3 ft-lbs.)
•
7 kgf cm, 2.5 0.5 ft-lbs.)
•
White or blue
Cord [56]
Black or brown