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Conduct reassembly by reversing the order of the disassembly procedure. However, special attention
should be given to the following items.
1. Reassembly of the hammering mechanism
(a) First Gear [45] and Crank Shaft [31]
Press-fit the Oil Seal [35] into the Crank Case [44] and mount the O-ring (S-40) [34]. Then press-fit
the Ball Bearing 6203DDCMPS2L [33]. Use a retaining ring puller to mount the Retaining Ring for
D40 Hole [32]. Press-fit the Crank Shaft [31] into the Ball Bearing 6203DDCMPS2L [33]. Press-fit
the Crank Shaft [31] into the Distance Ring [36]. Fit the Feather Key 4 x 4 x 8 [27] into the groove
of the Crank Shaft [31] and then press-fit the First Gear [45] with a suitable jig, while holding the flat
portion of the Crank Shaft [31] with a steel bar. Before doing the press-fitting work above, make
sure that the Feather Key 4 x 4 x 8 [27] fits properly into the key groove of the First Gear [45] as
shown in Fig. 4 below.
Fig. 4
First Gear [45]
Oil Seal [35]
Crank Shaft [31]
(b) Second Hammer [12], Damper Washer [13], Damper [14], and Cylinder [19]
Fit the Damper Washer [13] and the Damper [14] onto the Second Hammer [12] and insert it into
the Cylinder [19] being careful of the direction of the Damper Washer [13]. Perform reassembly
aligning the inclined surface inside the Damper Washer [13] with the inclined surface of the Second
Hammer [12] as shown in Fig. 5 on the next page.
Reassembly
Support
Feather Key 4 x 4 x 8 [27]
Steel bar
-4-
Distance Ring [36]
Ball Bearing 6203DDCMPS2L [33]
O-ring (S-40) [34]
Retaining Ring for D40 Hole [32]
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