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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 22SA.
9-1. Disassembly
(1) Hammer Case Ass'y [3]
(a) Removal of the Hammer Case Ass'y [3]
Remove the four Seal Lock Hex. Socket Hd. Bolts M5 x 45 [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 Packing (B)
[22] from between the Hammer Case Ass'y [3] and the Inner Cover [23].
(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 [20] and the Needle Roller [19]
Tap the end surface of the Hammer Case Ass'y [3] with a wooden hammer to remove the Ring Gear [20]
and the Needle Roller [19]. If the Ring Gear [20] and the Needle Roller [19] cannot be removed, warm up
the Hammer Case Ass'y [3] then tap it with a wooden hammer to remove them.
Fig. 3
[1]
[3]
[6]
[19]
[20]
[22]
[2]
[23]