Hitachi DH 40MRY, Технические данные и руководство по обслуживанию

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(2) Mounting the piston
Insert the Piston Pin [33] into the 8-mm dia. hole (marked side) of the Piston [34] and the Connecting Rod [35]
then press-fit it. Mount the O-ring [25] to the Piston [34] . Be careful not to protrude the Piston Pin [33] from the
outside diameter of the Piston [34] . Move the crank pin of the Crank Shaft [41] to the bottom dead center and
mount the piston assembly to the Crank Shaft [41] from the front cover side of the Cylinder Crank Case [46] .
Mount the Retaining Ring for D10 Shaft [36] using a retaining ring puller (Fig. 22).
Crank Shaft [41]
Cylinder Crank Case [46]
Fig. 22
Mark
Retaining Ring for
D10 Shaft
[36]
Connecting Rod [35]
Crank pin
Piston [34]
Piston Pin [33]
O-ring [25]
(3) Mounting the cylinder and the retainer sleeve
Press-fit the Retainer Sleeve [17] into the Ball Bearing 6007DDUAV2S [14] . Secure it with the Retaining Ring
D35 [13] . Mount the Second Hammer [20] , Damper Washer [21] , Damper [22] and Damper Holder [23] to the
Retainer Sleeve [17] . Mount the Damper Washer [21] aligning the R surface of the inside diameter with the R
surface of the Second Hammer [20] . Insert the Striker [24] into the Cylinder [26] then insert the Cylinder [26]
into the Retainer Sleeve [17] . Secure the Cylinder [26] and the Retainer Sleeve [17] with the four Needle Pins
D6 x 6 [18] and cover it with Spring Holder (B) [28] . Mount the Bering Washer [15] , Lock Spring [27] , Lock
Sleeve [29] , Clutch [31] and Bevel Gear [32] to the Cylinder [26] . Mesh the claw of the Lock Sleeve [29] with
the claw of the Clutch [31] . Insert the retainer sleeve assembly into the Cylinder Crank Case [46] aligning the
spline of the Lock Sleeve [29] with the spline groove at the inner circumference of the Cylinder Crank Case
[46] . If the slip clutch assembly and Lever Shaft [88] are mounted in the Cylinder Crank Case [46] first, the
Bevel Gear [32] will be an obstacle to reassembly. Before mounting the slip clutch assembly and the Lever
Shaft [88] , mount the retainer sleeve assembly to the Cylinder Crank Case [46] (Fig. 23).