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9. PRECAUTIONS IN DISASSEMBLY AND REASSEMBLY
The [Bold] numbers in the descriptions below correspond to the item numbers in the Parts List and exploded
assembly diagram for DH 25PA and the <Bold> numbers to those in the Parts List and exploded assembly
diagram for DH 25PB.
9-1. Disassembly
(1) Disassembly of the Striking Mechanism Section
With a drill bit or screwdriver, push in the Second Hammer [19] <19> to release the Striker [3] <3> from the O-
Ring (FPM 810) [20] <20>. Remove the Hex. Socket Hd. Bolt (W/Flange) [32] <32> from the Cylinder Case
[31] <31> and then remove the Cylinder Case [31] <31> from the Crank Case [46] <46>. Remove the
Connecting Rod [9] <9> from the Crank Shaft [47] <47> to remove the Piston [7] <7> from the Crank Case
[46] <46>. Lightly tap the Cylinder [2] <2> with a plastic hammer to remove the Striker [3] <3>. If the Striker
[3] <3> is hard to be removed, push the Piston [7] <7> connected with the Connecting Rod [9] <9> in the
Cylinder [2] <2> and pull it out with a jerk. Then the Striker [3] <3> can be pulled out together with the Piston
[7] <7>.
(2) Disassembly of the Retainer Section
As shown in Fig. 8, slide the Grip [27] <27> in the direction
indicated by the arrow, and remove the Front Cap [26]
<26>. The Grip [27] <27>, the Ball Holder [28] <28> inside
the Grip, the Holder Spring [29] <29>, Washer (B) [30]
<30> and the Steel Ball [14] <14> can then be removed
from the Retainer Sleeve [15] <15>.
Front Cap [26] <26>
Grip [27] <27>
Fig. 8
