Reassembly Of Crankshaft And Piston Components - Yanmar 2TNV70 Service Manual

ENGINE
Do not allow the honing tool to operate in one
position for any length of time. Damage to the
cylinder wall will occur. Keep the tool in constant
up-and-down motion.
Figure 6-81
• Use a 50:50 mixture of diesel fuel and engine
oil as a honing fluid.
• Use a 300-grit hone at 300 - 1200 rpm
(Figure 6-82).
(1)
Figure 6-82
IMPORTANT
Solvents will not adequately remove honing
residue, resulting in premature piston and
ring wear. Always wash cylinders using hot,
soapy water.
6-52
NOTICE
(1)
0000248A
(2)
0000249B
• When honing is completed, wash the cylinder
block with hot water and soap. The cylinder wall
is adequately cleaned when a white rag wiped
in cylinder comes out clean. Use brushes to
clean all passages and crevices. Rinse with hot
water and dry with compressed air. Apply clean
engine oil to all steel surfaces to prevent
rusting.
Reassembly of Crankshaft and
Piston Components
Notes:
• Proceed slowly. Make no forced assemblies
unless a pressing operation is called for. All
parts must be perfectly clean and lightly
lubricated when assembled.
• Use new gaskets, seals and O-rings during
assembly.
• Liberally apply clean engine oil to all internal
parts during assembly.
• All fasteners should be tightened to a given
torque. If a special torque is not provided in the
Special Torque Chart on page 6-13, tighten to
standard torque specifications. See Tightening
Torques for Standard Bolts and Nuts on
page 4-26.
TNV IDI Service Manual
Cylinder Block