Hitachi WR 16SA S, Технические данные и руководство по обслуживанию

Страница: 17 / 29

--- 14 ---
9. REPAIR GUIDE
The procedures and the precautions in disassembly and reassembly are described below.
The [bold] numbers correspond to the item numbers in the Parts List and the exploded assembly diagram of the
Model WR 16SA.
9-1. Disassembly
(1) Removal of the hammer case assembly
(a) Removal of the Hammer Case Ass'y [3]
Remove the four Seal Lock Hex. Socket Hd. Bolts M5 x 35 [2] . Supporting the Hammer Case Ass'y [3] , tap
the tip of the Anvil [6] with a wooden hammer to remove the Hammer Case Ass'y [3] . Remove Gasket (A)
[20] from between the Hammer Case Ass'y [3] and the Inner Cover [21] .
(b) Removal of the Anvil [6]
Remove the Hammer Case Ass'y [3] . Then the Anvil [6] can be removed from the bearing portion of the
Hammer Case Ass'y [3] .
(c) Removal of the Ring Gear [18]
Tap the end surface of the Hammer Case Ass'y [3] with a wooden hammer to remove the Ring Gear [18] .
If the Ring Gear [18] cannot be removed, warm up the Hammer Case Ass'y [3] then tap it with a wooden
hammer to remove the Ring Gear [18] .
(2) Removal of the Spring [11]
Push the click of the Hammer [8] with a hand press and keep it at the position where the Spring [11] is
compressed fully. Remove the two Steel Balls D6.35 [7] from the steel ball guide at the cam portion of the
Spindle [16] and the Hammer [8] with a flat-blade screwdriver. Then release the hand press and remove the
Hammer [8] from the Spindle [16] to remove the Spring [11] . Be careful not to lose the thirty Steel Balls D3.97
[9] and the Hammer Washer [10] mounted between the Hammer [8] and the Spring [11] during disassembly.
Fig. 4
Fig. 5
[1]
[3]
[6]
[18]
[20]
[21]
[2]
Hammer click
Steel ball guide
Steel ball
Spindle cam top
Hammer
Spindle