Hitachi DB 3DL2 Technical Data And Service Manual page 14

(2) Removal of Guide Sleeve (A) [6]
Remove the Retaining Ring [3], Washer (D) [4], Guide Spring [5] and Guide Sleeve (A) [6] in order by
following the procedure shown in Fig. 1-1 to 1-4.
Then slowly raise the other side of the retaining ring with the small flat-blade screwdriver until it is free.
Avoid quickly raising the retainer ring or it may fly out forcefully.
Socket
Washer (D) [4]
Retaining Ring [3]
Hold the body and adjust the gap of the Retaining Ring [3]
to the groove of socket, then insert a small flat-blade
screwdriver into the groove at an angle.
Slide the small flat-blade screwdriver under one side of
the gap of the Retaining Ring [3].
(3) Disassembly of the clutch unit
Remove the Clutch Dial [7] after removal of Guide Sleeve (A) [6]. Turn the Nut [8] counterclockwise and
remove it from the Gear Case [12]. Remove the Spring [9] and Washer (D) [10] from the Gear Case [12].
NOTE: Do not remove the Gear Case [12].
5. Disassembly of the power supply unit
The internal wires of the Switch (W/Lock) [41] and Terminal [46] are soldered to the Printed Circuit Board
[45]. Unsolder and remove the parts.
NOTE: Do not remove the Printed Circuit Board [45].
Small flat-blade
screwdriver
Guide Sleeve (A) [6]
Fig.1-1
Fig. 1-3
Press down Washer (D) [4] with the small flat-blade
screwdriver.
Slowly raise the retaining ring using the end face of
Guide Sleeve (A) [6] as a fulcrum.
-11-
Fig.1-2
Fig. 1-4