Tightening Torque - Hitachi DH 14DL Technical Data And Service Manual

Apply special grease to the lip portion of the oil seal in the Gear Cover [7], inner circumference of the
needle bearing, clutch claws of the Second Gear [17] and the Cylinder [19], both end surfaces of the
Thrust Washer [26], inner circumference of the needle bearing in the Inner Cover Ass'y [33], O-ring (B)
[21] of the Second Hammer [20], O-ring (P-15) [22], O-ring (A) [25] of the Striker [24], inner and outer
circumference of the Piston [29], Washer (A) [30], claw portion of the Clutch [37], claw portion, inner
circumference and arm portion of the Reciprocating Bearing [38] and O-ring (1AP-10) [13] of the Lever
[12].
Fill 30 g of special grease in the Gear Cover [7] and 10 g in the groove of the Inner Cover Ass'y [33].
Apply Hitachi Motor Grease No. 29 to the Steel Ball D7.0 [18].
Apply 0.2 g of Hitachi Motor Grease No. 29 to the sliding surfaces of Housing (A).(B) Set [59] and Lever
(B) [62].
Tapping Screw (W/Flange) D4 x 30 (Black) [8]------------------------------- 2.0 ± 0.5 N٠m (20 ± 5 kgf٠cm)
Tapping Screw (W/Flange) D4 x 20 (Black) [58] ----------------------------- 2.0 ± 0.5 N٠m (20 ± 5 kgf٠cm)
Tapping Screw (W/Flange) D4 x 16 (Black) [55] ----------------------------- 2.0 ± 0.5 N٠m (20 ± 5 kgf٠cm)
Machine Screw M4 x 5 [15] ------------------------------------------------------- 0.6 ± 0.2 N٠m (6 ± 2 kgf٠cm)
Brush Cap [57] ----------------------------------------------------------------------- 1.0 ± 0.5 N٠m (10 ± 5 kgf٠cm)
Application of lubricant

Tightening torque

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