Disassembly And Reassembly Of The Output Section - Hitachi NV 83A2 Technical Data And Service Manual

10-2. Disassembly and Reassembly of the Output Section

(1) Piston (H) [12], Cylinder [17] and related parts
Tool required:
Hexagon bar wrench (5 mm)
(a) Disassembly (See Figs. 10, 11 and 12.)
Remove the four Hex. Socket Hd. Bolts (W/Sp. Washer) M6 x 25 [3], and take off the Exhaust Cover [4].
The Piston (H) [12] can then be taken out.
Next, as illustrated in Fig. 9, screw two of the previously removed Hex. Socket Hd. Bolt (W/Sp. Washer)
M6 x 25 [3] into the provided holes on the Cylinder Plate [15].
Gripping these two bolts, simultaneously turn and pull upward to remove the Cylinder Plate [15]. When
this has been accomplished, the Cylinder [17] and other parts which make up the output section can be
removed, as illustrated in Fig. 10.
If it is difficult to remove the Cylinder [17], remove the Tail Cover [31] by referring para.10-5 procedures,
and push out the Cylinder [17] from the lower part of the main body.
(b) Reassembly
Reassembly can be accomplished by following the disassembly procedures in reverse. However, special
attention should be given to the following items.
Confirm that Gasket (G) [23] is reassembled.
Check that the Base Washer [21] is securely and properly mounted to its position in the Body (B) [27].
Then mount the other parts.
Exhaust Cover [4]
Piston (H) [12]
Cylinder [17]
Cylinder Plate [15]
Gasket (B) [5]
Body (B) [27]
Hex. Socket Hd. Bolt
(W/Sp. Washer) M6 x 25 [3]
Fig. 8
--- 26 ---
Cylinder Plate [15]
Fig. 9
Hex. Socket Hd. Bolt
(W/Sp. Washer) M6 x 25 [3]
Threaded hole
for M6 bolts