Hitachi DH 24PG - Press-fitting the First Gear; Mounting the Oil Seals; Reassembling the Internal Pressure Adjusting Mechanism

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2. Press-fitting the first gear
Match the end of the First Gear [51] with the rear end of the Second Shaft [41] and then press-fit. After
press-fitting the First Gear [51], confirm that the inner ring of the Reciprocating Bearing [47] shaft rotates
smoothly.
3. Mounting the oil seals
In reassembly of the Oil Seal [9] and Oil Seal (A) [27], apply grease to the inner circumferences of both
seals, but do not apply grease along their peripheries. Be careful not to skew the Oil Seal [9] and Oil Seal
(A) [27] when press-fitting these parts.
4. Reassembling the internal pressure adjusting mechanism
Insert Felt Packing (A) (64)<64>{71} into the hole on the Air Cap (63)<63>{70} and lay the Air Cap
(63)<63>{70} over the ĭ8.4 shaft of the Inner Cover [53]. Fit the inside boss of the Air Cap (63)<63>{70}
hole to the groove on the ĭ8.4 shaft of the Inner Cover [53].
Fig. 6 Ɣ Reassembling the internal pressure adjusting mechanism
Air Cap (63)<63>{70}
Felt Packing (A) (64)<64>{71}
Fit the boss to the groove.
Inner Cover [53]
A – A (2:1)
A
A