Inspection Of Crank Pin Oil Clearance - TOHATSU MFS 9.9 Owner's Manual

36) Inspection of Crank Pin Oil Clearance

1. Clean connecting rod.
2. Place cylinder block upside down on the work bench. Install
piston 2 to connecting rod 1, and install the assembly to
cylinder block.
Piston rings are not to be attached to piston.
3. Install crankshaft on the cylinder block.
Place plasti-gauge 3 on each crank pin 4 parallel to
4.
crankshaft.
Do not place plasti-gauge 3 on the oil hole 5 of
crank pin 4.
Install connecting rod and cap 2 to crank pin 4.
5.
· Be sure that individual cap is installed to their
original connecting rod.
· Check that "UP" mark b of connecting rod is
at crankshaft flywheel side c.
6. Tighten connecting rod bolts in two steps to specified torque.
Do not move connecting rod and crankshaft until
oil clearance measurement is completed.
Connecting Rod Bolts :
First Tightening Torque : 6 N · m (4 lb · ft) [0.6 kgf · m]
SecondTightening Torque : 12 N · m (9 lb · ft) [1.2 kgf · m]
7. Remove connecting rod cap and measure width of crushed
plasti-gauge 3 on each crank pin. Replace connecting rod
or crankshaft if the width is over specified value.
Crank Pin Oil Clearance :
0.015 - 0.041 mm (0.00059 - 0.00161 in)
Functional Limit :
0.060 mm (0.00236 in)
4st 9.9/15/20 2008
U P
2
U P
1
a
3
1
b
3
5
4
5
c
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