TM 5-3805-280-24-2
Cylinder Block, Liners, Pistons and Rods
10
IMPORTANT: Hold on to piston to prevent piston
15
from dropping. Piston will drop once
piston rings have cleared cylinder liner.
If liners are to be reused, be extremely
careful not to let connecting rod hit
liner bore when removing piston and
rod assembly.
11. Gently tap piston through top of cylinder block from
the bottom.
12. Remove pistons and rods from engine.
13. If piston rings are to be reused, measure piston ring
end gap and compare to the following specifications:
Piston Rings--4045DF, TF150 and 6068DF, TF150 Engines--
Specification
End Gap (No. 1 Compression) ........... 0.33--0.58 mm (0.013--0.023 in.)
End Gap (No. 2 Compression) ........... 1.24--1.49 mm (0.049--0.059 in.)
End Gap (No. 3 Oil Control) ............... 0.30--0.56 mm (0.011--0.022 in.)
Piston Rings--4045TF250 and 6068TF250 Engines--Specification
End Gap (No. 1 Compression) ........... 0.33--0.64 mm (0.013--0.025 in.)
End Gap (No. 2 Compression) ........... 0.75--1.00 mm (0.030--0.039 in.)
End Gap (No. 3 Oil Control) ............... 0.33--0.64 mm (0.013--0.025 in.)
14. Remove all main bearing caps with bearings. Remove
crankshaft from engine.
RG,10,DT7421 1912NOV975/5
13-128
