Baudoulin 4M11G Maintenance Manual page 53

Maintenance Manual of 4M11 Series Diesel Engine For Land Power Generators
(4) Control range of tightening torque for cylinder head bolts:
Point 2: Assembly
Assemble the grease-applied seal ring to the welded elbow, insert the welded elbow into
corresponding hole of cylinder block, and fix it by fixing plate, hexagon socket bolts, and
spring washers.
Point 3:
Check:
1) Measure the protrusion of cylinder sleeves (The qualified value is 0.05~0.10mm).
Notice: The cylinder sleeve protrusion is the average value of measurements in directions
X and Y. The measurement shall be made for the cylinder block and cylinder sleeve with the
seal ring not assembled. The group marking for the cylinder sleeves assembled on one same
cylinder block must be same.
2) The fitting surface and the friction surfaces shall be free of rusting, scratch, and
knocking damage. Before assembling, wipe clean and apply clean lubricating oil or
grease.
Assembling: Erect the cylinder sleeves on the cylinder block, assemble seal rings to
corresponding positions between cylinder block and cylinder sleeves, place the cylinder sleeves
vertically into the cylinder bores, and knock the cylinder sleeves in place by a nylon bar.
Point 4:
Disassembly: Using a special tool, disassemble the camshaft bushing. While doing so, be
careful not to cause damage to other bushings.
Checking: Before the assembling of sleeves, ensure to disassemble the grease from the
back surfaces of sleeves and bushings and from the fitting base holes and thoroughly clean. The
sleeves, bushings, and base holes shall be free of burrs, flashes, and iron chippings.
Assembling: Apply oil to the cylinder block ports, attach the camshaft bushing onto
special tooling, and guide it into the cylinder block. In such case, it's necessary to align the
oil-way hole of the camshaft bushing with that of cylinder block.
Point 5: Assembly
Assemble the screw by special tool. After tightening, assemble the steel ball and spring in
turn, and then tighten the cap nut and washer by an open-end wrench.
2nd cylinder - 3rd cylinder -4th cylinder - 1st cylinder
M14－12.9： (230～300) N·m
M14－10.9： (190～285) N·m
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