P 11/17
Repair
[3] DISASSEMBLY/ASSEMBLY
[3] -7. Recommended Fastening Torque of Screws and Bolts
Tighten the bolt to the recommended torque described in Fig. 21.
Fig. 21
19
Barrel
Crank housing 
complete
Item No. | Description | Q'ty | Fastening Torque |
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19 | M5 x 25 Hex socket head bolt | 4 | 7.8 - 11.8 N.m |
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[4] MAINTENANCE PROGRAM
When replacing carbon brush, it is recommended to do the following maintenance at the same time for longer service life of the machine.
1)Replace the parts described in Fig. 22 with new ones.
2)Wash out or wipe off old grease in Crank housing complete, and lubricate the parts in accordance with the instructions in [2] LUBRICATION. (Refer to Fig. 1.)
Fig. 22
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| Item No. | Description |
1 |
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| 1 | Cap 38 |
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| 9 | Urethane Ring 26 |
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| 23 | Steel ball 7.0 (2 pcs) |
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| 27 | O Ring 12 |
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| 28 | Rubber Ring 13 |
Chuck cover | Guide washer Change ring | 37 38 | O Ring 18 (thick one) | |
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Steel ball 4.8 |
| Connecting rod | ||
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Ring 21 Tool holder | Impact bolt | Striker | Cylinder Ring 29 | Piston |
9 | 23 | 27 | 28 | 37 | 38 |