Repair Guide; Precautions On Disassembly And Reassembly - Hitachi H 65SD3 Service Manual

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WARNING: Be sure to disconnect the power cord plug from the power supply before conducting

repair. Otherwise, the motor may suddenly turn on, posing a very dangerous situation.

[Bold] numbers in the description below correspond to the item numbers in the parts list and exploded

assembly diagram for the Model H 65SD3.

NOTE: If it is difficult to loosen and remove the fixing bolts, use an appropriate heating device to

heat the bolts to approximately 80°C (176°F).

1. Disassembly of the armature ass'y

(1) Loosen the four Bolts M4 x 8 [81], remove the Cap Cover [82], Cap Rubber [83], Brush Cap [84] and

Carbon Brush [85]. Be careful not to lose any removed parts.

(2) Loosen the four Bolts M8 x 40 [23], and remove the Cylinder Case [19]. Next, loosen the Bolt M8 x 16

[31] and then remove the Connecting Rod Ass'y [28] and the Crank Washer [30]. Leave the Striker

[21] and the Piston [26] as they are.

Fig. 1 • Disassembly of the armature ass'y

[42]

REPAIR GUIDE

Disassembly

[48]

[70]

Press the end surface of the

armature with a hand press.

100 mm in dia.

-1-

Armature shaft

Tubular jig

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