Oil Clearance; Metal Bearing; Inspection Of Crank Pin (Rod Journal) Oil Clearance - TOHATSU MFS 60A Service Manual

Power Unit
36) Inspection of Crank Pin (rod journal) Oil
Clearance
1. Clean connecting rod and metal bearing, and then install

metal bearing.

2. Place cylinder block upside down on the work bench. Install
piston to connecting rod 1.
Do not attach piston rings.
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 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. (a)
• Check that "Δ" mark b of connecting rod is
directed to crankshaft flywheel side.
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 : 15 N·m (11 lb·ft) [ 1.5 kgf·m ]
Final Tightening Torque : 30 N·m (22 lb·ft) [ 3.0 kgf·m ]
7. Remove connecting rod cap and measure width of crushed
plasti-gauge on each crank pin. Replace connecting rod or
crankshaft if the width is over specified value.
Crank Pin Oil Clearance c :
0.020 to 0.045 mm (0.00079 to 0.00177 in)
Functional Limit :
0.060 mm (0.00236 in)
5-46
b
2
c
mm in
c Plasti-gauge
1
a
1
3
4
4st 60 2019