AR03.30-W-8022C | Check, remachine flywheel | 2.11.11 |
ENGINES 457.9 in MODEL 374, 375, 940, 942, 943, 944, 958
W03.30-1044-12
Illustrated on model 944
1 Flywheel
D Flywheel diameter for mounting clutch
E Flywheel minimum width between coupling friction surface and support flange
| Removing | ||
1 | Remove flywheel (1) | ||
2 | Clean flywheel (1) | ||
| Checking | ||
3 | Check coupling friction surface of flywheel (1) for scorch marks, score marks and cracks | The flywheel (1) can be reworked if visible scorch marks or score marks are weak. The flywheel (1) must be replaced when there are clearly visible and perceptible score marks or cracks. | |
4 | Measure flywheel minimum width between coupling friction surface and mounting flange (E) at flywheel (1) | If flywheel minimum width between friction surface and mounting flange (E) is exceeded the flywheel (1) must be replaced. | |
Reworking | |||
5 | Rework flywheel (1) | After refacing, there must not be any shrink holes or chatter marks present on the clutch friction surface. | |
Flywheel dia. for mounting clutch (D) | |||
Peak-to-valley height and flatness of clutch friction surface | |||
Flywheel minimum width between coupling friction surface and mounting flange (E) | |||
Brake drum, brake discs and flywheels-turning devices gotis://B_42/43.2_09.0 | |||
| Install | ||
6 | Install flywheel (1) |
Check values for flywheel
Number | Designation | Engine 457.9 | |||
BE03.30-N-1002-03C | Clutch friction surface | Peak-to-valley height (Rz) | μm | 16 | |
Flatness | mm | 0.03 | |||
BE03.30-N-1003-03C | Flywheel | Minimum width between clutch friction surface and support flange | mm | 60 | |
BE03.30-N-1004-03C | Bolt, flywheel | Thread diameter | M | 161.5 | |
Length of shank when new | mm | 74.0 | |||
Permissible shank length | mm | 75.0 | |||
BE03.30-N-1007-03C | Flywheel dia. | for mounting the clutch | mm | 475.000 to 475.063 | |