Precautions In Disassembly And Reassembly; Disassembly - Hitachi W 4YD Technical Data And Service Manual

8. PRECAUTIONS IN DISASSEMBLY AND REASSEMBLY

The [Bold] numbers in the following descriptions correspond to the item numbers in the parts list of the Model
W 4YD.

8-1. Disassembly

8-1-1. Disassembly of the slider case ass'y ... See Fig. 1.
(a) Loosen the four Tapping Screws (W/Flange) D4 x 20 (Black) [12] securing Slider Case (A) [20] and remove
Slider Case (B) [22]. After removal of Slider Case (B) [22], the built-in parts and assemblies can be taken out
as they are.
* Since the Spring [18] is fitted in compression, removing Slider Case (B) [22] will cause the slider ass'y to
jump out. So be sure to hold Slider Case (B) [22] while loosening the Tapping Screws (W/Flange) D4 x 20
(Black) [12] to prevent the slider ass'y from jumping out. Also take care not to lose Spring (A) [23] and the
Steel Ball D3.175 [24] housed in the slider case.
8-1-2. Disassembly of the slider ass'y ... See Fig. 1.
(a) Cut off the four caulking portions at the lower part of the Stopper [2] with a rotary band saw. Push in Plate (A)
[4] to unlock the Guide Block [3] then pull out the Stopper [2] and the Guide Block [3]. At this time, be careful
not to lose Plate (A) [4] and Spring (C) [5].
(b) After loosening the two Tapping Screws (W/Flange) D4 x 20 (Black) [12] securing Slider (A).(B) Set [6], the
built-in parts and assemblies can be taken out as they are.
[1] [2] [3]
[11]
[6]
[10]
[9]
[8]
[4] [5]
[7]
[13]
[12]
[17]
[18]
[15]
[20]
[14]
[19]
Fig. 1
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[12]
[22]
[21]
[23] [24]
[27]
[25] [26]