Reference Material; Lubrication; Dust Collection Mechanism - Hitachi DH 24PD3 Technical Data And Service Manual

Hide thumbs Also See for DH 24PD3:

Table of Contents

8. REFERENCE MATERIAL

It is not necessary to replenish the grease lubricant unless the tool is disassembled or there is grease leakage

due to a defective seal. Special grease is used in the striking section. Should the striking section (within the gear

cover) be disassembled, carefully remove the old grease from all parts and, on reassembly, inject 45 g (1.6 oz) of

new grease into the gear cover and 5 g (0.2 oz) into the groove of the inner cover. Be careful not exceed the

designed amount of grease. Excessive grease will reduce striking efficiency.

Apply Molub Alloy No. 777-1 grease to the outer circumference of the clutch groove and the pin portion of the

change lever.

As illustrated in Fig. 3, the Model DH 24PD3 is provided with a dust fan chamber, consisting of casing (A) and

casing (B), located between the gear cover and housing. Dust is drawn in from the nozzle of the dust collection

adapter ass'y by the suction provided by the dust fan mounted inside the dust fan chamber, and is deposited in

the dust bag. The dust shaft on which the dust fan is mounted, is connected to the armature shaft by a spline,

and rotates at the same speed as the armature.

The dust collection adapter ass'y is designed to be mounted on the side handle. As illustrated in Fig. 4, a spring

inside pipe (B) allows movement of pipe (A) so that the drill bit stroke (drilling depth) can be adjusted by simply

changing the position of a stopper mounted on pipe (A), thus functioning as a depth gauge. Also, a rubber cap

and a nozzle seal are provided to minimize leakage of dust where the drill bit rotates inside the nozzle.

Armature shaft

Dust fan chamber

Casing (B)

Casing (A)

Gear cover

Housing

Dust shaft

Spline portion

Dust bag

Dust fan

Outlet

Fig. 3

--- 13 ---

Table of Contents