Inspection Of Crank Shaft Main Journal Oil Clearance - TOHATSU MFS25 Service Manual

34) Inspection of Crank Shaft Main
Journal Oil Clearance
1. Clean bearings, crankshaft main journal, and bearing
installation areas of crank case and cylinder block.
2. Place cylinder block on the work bench with cylinder head
side facing downward.
Install bearing 1 and crankshaft 2 to cylinder block 3.
3.
• Be sure that individual bearings are installed to
their original locations.
• Install bearings with their projection a fit into
cylinder block groove.
Place plasti-gauge 4 on each crankshaft main journal
4.
parallel to crankshaft.
Do not place plasti-gauge on the oil hole of
crankshaft main journal.
5. Install bearings to crank case.
• Be sure that individual bearings are installed to
their original locations.
• Install bearings with their projection fit into
crank case groove.
6. Install crank case to cylinder block.
7. Tighten crank case bolts in two steps to specified torque in
the order shown.
Crank Case Bolts (M8) :
First Tightening Torque : 10 N·m ( 7 lb·ft ) [ 1.0 kgf·m ]
Final Tightening Torque : 23.5 N·m ( 17 lb·ft ) [ 2.4 kgf·m ]
Crank Case Bolts (M6) :
First Tightening Torque : 6 N·m ( 4 lb·ft ) [ 0.6 kgf·m ]
Final Tightening Torque : 11.5 N·m ( 8.5 lb·ft ) [ 1.2 kgf·m ]
25/30 2006
~
1 8
~
9 16
3
a
2
1
a
4
15
5 6
11
2
9
3
4
13
8 7
5
16
12
10
14
5-51