15
Service and Repair Manual
Model 900/950/990
354
233
375
234
Dismantling
the buffer
housing (All
models,
Model 950
shown)
1. Remove the buffer housing (354, 233) from the
hammer casing (346, 228).
2. Remove the gaskets (352, 231), (375, 234) and
buffer housing ring (353, 232) from the buffer
housing.
346
228
352
231
353
232
1. Position the tool vertically in the vice, using soft
metal jaw plates, with the hammer case
uppermost.
2. Remove the six screws (348, 227, 427, 527) and
washers (347, 226, 426, 526) securing the
hammer casing (346, 228, 428, 528) to the motor
casing (149). Using a soft-faced hammer, loosen
the hammer casing.
3. Holding the connecting rod (305, 205, 405,505)
carefully remove the hammer casing. Remove the
gasket (150).
150
149
Dismantling
the hammer
casing.
Dismantling
the piston (All
models, 950
shown)
1. Remove the striker (301, 201, 401, 501) from the
piston (303, 203, 403, 503).
2. Push the gudgeon pin (304, 204, 404, 504) from
the piston and remove the piston from the
connecting rod (305, 205, 405, 505).
3. Remove the two piston seals (302, 202, 402, 502)
from the piston.
345
(950
ONLY)
528
428
346
228
527
427
348
227
526
426
347
226
505
405
305
205
301
201
401
501
305
205
405
505
304
204
404
504
302,
202
402
502
303
203
403
503
Fig. 7
Fig. 8
Fig. 9