p4-7.pdf yes 4-7 attached.. just making sure we are looking at the same thing.
p4-7.pdf yes 4-7 attached.. just making sure we are looking at the same thing.
Steve M
__________________
Its all gone Norfolk!!!
Now in the Lotus position.
Here you go, hope this helps:
Engine Manual 4 - 7: Oil clearance measurement
Main bearing
Caution
• Ensure that you measure in the correct axis.
• Don’t measure the crankshaft on an off-centre angle, and don’t rotate the crankshaft (translation note: whilst you have a plastigauge clamped in)
1. Take the cap and bearing off. When you put it back on use the correct torque.
2. Cut the plastigauge the same length as the axial direction (translation note: width of the journal bearing) and place it on top of the crankshaft journal.
3. Place and tighten the cap at the correct torque (4.8kg-m).
4. Remove the cap and use the scale on the bag that the plastigauge came in to understand the measurement. Use the fattest part of the width for the measurement.
Journal oil clearance:
Normal: No1 and No4 journal = 0.016mm to 0.032mm
Service limit: 0.05mm
Left hand image here
5. When the measurement is in excess of the limit, inspect for block expansion or friction, and if there is no abnormality then use an undersize bearing and re-check the clearance.
Conrod bearing
Caution
• Ensure that you measure in the correct axis.
• Don’t rotate the crankshaft when you are tightening or loosening the conrod.
1. Take the cap and bearing off. When you put it back on use the correct torque.
2. Cut the plastigauge to length and place it on the crankshaft pin.
3. Place and tighten the cap at the correct torque (3.2kg-m).
4. Remove the cap and use the scale on the bag that the plastigauge came in to understand the measurement. Use the fattest part of the width for the measurement.
Pin oil clearance:
Normal: 0.020mm to 0.038mm
Service limit: 0.05mm
Right hand image here
5. When the measurement is in excess of the limit, inspect for block expansion or friction, and if there is no abnormality then use an undersize bearing and re-check the clearance.
Last edited by stu g; 24-10-2017 at 10:19 PM.
! Stuei
I do wonder if there would be any demand for the whole thing in English?
! Stuei
OK, so here is page 4 -8. Sorry that the tables don't paste in well. You might have to cut and paste them out in to Excel.
Engine Manual 4 – 8 Metal selection, mating
Main bearing
Caution
• If you hare changing the main bearing, look up the crankshaft bearing mating mark and the cylinder block hole mating mark against the table.
• When you have inserted the new bearing, measure the oil clearance.
Cylinder block image - No1 journal, No4 journal
Translator’s note (the first letter “C” is the No 1 journal, second is No2 journal etc)
Cylinder block hole (44mm)
Mating mark Data
No2 and No3 journal No 1 and No4 journal
A +0.000mm to +0.006mm -0.006mm to +0.000mm
B +0.006mm to +0.012mm +0.000mm to +0.006mm
C +0.012mm to +0.018mm +0.006mm to +0.012mm
D +0.018mm to + 0.024mm +0.012mm to +0.018mm
Crankshaft image – Crankshaft journal mating mark stamp
No1 journal, No 4 journal
Translator’s note (the first number “2” is the No 1 journal, second is No2 journal etc)
Shell bearing image (right hand side of page) – align the notch in the correct place. Note the colour mark on the side of the shell.
Selection table
Bearing thickness is 2mm
Mark Colour mark Data
G Red 0.000mm to -0.003mm
F Pink +0.003mm to 0.000mm
E Yellow +0.006mm to +0.003mm
D Green +0.009mm to + +0.006mm
C Brown +0.012mm to +0.009mm
B Black +0.015mm to +0.012mm
A Blue +0.018mm to +0.015mm
Each bearing colour goes up in 0.003mm increments.
Main bearing mating table
Crankshaft journal mating mark Cylinder block hole mating mark
A B C D
Bearing side colour
1 Red Pink Yellow Green
2 Pink Yellow Green Brown
3 Yellow Green Brown Black
4 Green Brown Black Blue
It might be expected that the housing may have expanded following any incident.
These are set up so that, as before, No1 journal is 0.016mm to 0.032mm, and No2 and No3 journals are 0.020mm to 0.028mm.
Caution: Don’t just rely upon this table, ensure that you measure the oil clearance again afterwards.
Last edited by stu g; 30-10-2017 at 09:57 PM.
! Stuei