Measuring Axial Play; Measuring Housing; Measuring Main Bearings - BMW C1 Repair Manual

Measuring axial play

•
Measure between tips.
L
Note:
In direction of stroke and 90° to direction of stroke.
Wear values:
Crankshaft runout..............max. 0.05 mm (0.002 in)
Radial play at conrod
bearing..............................max. 0.07 mm (0.003 in)
Axial play at conrod
bearing..................................max. 0.8 mm (0.03 in)
Main bearing journal dia. ......... 32.01 mm (1.260 in)
Radial play at crankshaft
bearings ............................max. 0.07 mm (0.003 in)
Axial play.................0.2 - 0.4 mm (0.008 - 0.016 in)
11.64

Measuring housing

– Remove crankshaft
General instructions
Room temperature ................... 20-25 °C (68-77 °F)
Cleaners
•
Make sure that lube-oil bores are unobstructed
•
Check seats of grooved ball bearings
All grooved ball bearings:
Press-fit interference ........min. 0.01 mm (0.0004 in)

Measuring main bearings

C1111090
Measuring planes:
1 90° to joint between bearing shells
2 60° offset from this plane
3 120° offset from this plane
Wear values:
Bearing dia.............................. 32.07 mm (1.262 in)
III III II II
I I
C1111100