POWR
5-47
CRANKSHAFT AND PISTON
E
CHECKING THE BIG-END OIL
CLEARANCE
NOTE:
Make sure that the crankshaft is qualified
before initiating the following procedure.
1. Measure:
•
Big-end oil clearance
Out of specification
→
Replace the
upper and lower bearings as a set.
NOTE:
• Keep each connecting rod and cap as a
set.
• Measure the big-end oil clearance at
room temperature (20 °C (68 °F)).
Measuring steps
CAUTION:
Install the bearings in their original posi-
tions. Incorrect oil clearance measure-
ments can lead to engine damage.
(1) Clean the bearings and bearing por-
tions of the connecting rod.
(2) Install the upper half of the bearing into
the connecting rod and the lower half
into the connecting rod cap.
NOTE:
Align the projection of the bearing with the
notch in the cap and connecting rod.
(3) Put a piece of Plastigauge
®
onto the
crank pin in parallel to the crankshaft.
(4) Assemble the connecting rod onto the
crank pin.
Big-end oil clearance
0.020 - 0.052 mm
(0.0008 - 0.0020 in)
Содержание F40BED
Страница 60: ...SPEC 2 12 MAINTENANCE SPECIFICATIONS E DIMENSIONS H9 L3 L7 L6 L2 L1 H2 H1 H7 H4 H3 H8 H6 W5 W6 W1 L4 A1 A3 A2 ...
Страница 126: ...GENERAL 3 25 E CHK ADJ LUBRICATION POINTS Apply Water resistant grease ...
Страница 128: ...CHK ADJ 3 26 GENERAL E ...
Страница 129: ...3 26 CHK ADJ F D ES ...
Страница 272: ...E LOWR BACKLASH 6 34 MEASURING THE FORWARD GEAR BACKLASH 6 34 MEASURING THE REVERSE GEAR BACKLASH 6 36 ...
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Страница 537: ...Printed on recycled paper Printed in Japan Sep 1999 1 7 1 F40B YAMAHA MOTOR CO LTD ...