Lubrication Points And Type Of Lubricant; Screw Tightening Torque - Hitachi C 7SB3 Service Manual

Lubrication points and type of lubricant

Apply specified amount of grease to the following portions.
Grease (JF-375)
• Inner hole of the metal of the Gear Cover [26] ························································· About 0.5 g
Grease (SEP-3A)
• Pinion tooth flank of the Armature [22] ··································································· About 1 g
• Gear tooth flank of the Spindle and Gear Set [1] ······················································ About 1 g
• Inside the gear chamber of the Gear Cover [26] ······················································ About 5 g
Prepare the following grease as necessary.
Item
Grease (SEP-3A)
Location
[2] Bearing Holder
[12] TCT Saw Blade
[9] Bearing Cover
[16] Lever
[27] Flow Guide (A)
[25] Flow Guide (B)
[26] Handle Cover
[44] Cord Holder
[28] Cushion
[40] Housing Ass'y
[41] Brush Holder
[42] Carbon Brush
[45] Switch
[58] Lever
[67] Base
[64] Step Pin D6 x 13
*1: Tighten the Flat Hd. Screw M6 x 20 [29] until it is flush with the Cushion [28].
Registered part name
Grease (SEP-3A) (100 g)
Grease (SEP-3A) (2.5 kg)

Screw tightening torque

Name of screw or bolt
[3] Seal Lock Flat Hd. Screw M5 x 14
[14] Hex. Socket Hd. Bolt M8 x 15.5
[15] Seal Lock Flat Hd. Screw M4 x 10
[15] Machine Screw (W/Washers) M4 x 12 (Black)
[15] Machine Screw (W/Washers) M4 x 12 (Black)
[24] Tapping Screw (W/Flange) D4 x 20 (Black)
[24] Tapping Screw (W/Flange) D4 x 20 (Black)
[24] Tapping Screw (W/Flange) D4 x 20 (Black)
[29] Flat Hd. Screw M6 x 20
[38] Machine Screw (W/Washers) M5 x 50 (Black)
[39] Hex. Socket Set Screw M5 x 8
[43] Brush Cap
[46] Tapping Screw (W/Flange) D4 x 12
[57] Lock Nut
[60] Seal Lock Screw (W/Sp. Washer) M4 x 14
[61] Seal Lock Hex. Socket Set Screw M5 x 6
-8-
Net weight Code No.
100 g 930035
2.5 kg 930038
Tightening torque
No.
used
N•m
2 2.7 - 4.1 2.0 – 3.0
1 7.8 - 11.8
2 1.4 - 2.2 1.0 – 1.6
1 1.4 - 2.2 1.0 – 1.6
1 0.8 - 1.2 0.6 – 0.9
1 1.4 - 2.2 1.0 – 1.6
5 1.5 - 2.5 1.1 – 1.84
1 1.5 - 2.5 1.1 – 1.84
1 — *1
3 2.7 - 4.1 2.0 – 3.0
2 0.5 - 1.0 0.4 – 0.74
2 0.5 - 1.5 0.4 – 0.74
2 1.5 - 2.5 1.1 – 1.84
1 1.4 - 2.0 1.0 – 1.5
1 1.4 - 2.2 1.0 – 1.6
2 2.7 - 4.1 2.0 – 3.0
lbf-ft
5.8 – 8.7
— *1