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Doosan DE12 Series User Manual

Doosan DE12 Series
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ENGINE DISASSEMBLY
- 66 -
3.3. Reassembly
3.3.1. General precautions
z
Wash clean all the disassembled parts, particularly oil and water ports, using compressed air, then check
that they are free from restrictions.
z
Arrange the general and special tools in order for engine assembly operation.
z
To wet each sliding part, prepare the clean engine oil.
z
Prepare service materials such as sealant, gaskets, etc.
z
Discard used gaskets, seal rings, and consumable parts, and replace with new ones.
z
Apply only the specified torque for bolts in the specified tightening order and avoid overtightening.
z
Be sure to check that all the engine parts operate smoothly after being reassembled.
z
Check the bolts for looseness after preliminary reassembly.
z
After completing the engine reassembly operation, check if there is missing parts or shortage of parts.
z
Keep your hands clean during the working.
3.3.2. Cylinder block
z
Cover the floor of the workshop with wood plate or thick paper to prevent damage to the cylinder head and
place the cylinder block with the head fitting surface facing downward.
3.3.3. Oil spray nozzle
z
Tighten and assemble the oil spray nozzle
flange with fixing bolts using the spray nozzle
jig.
3.3.4. Tappet and cam shaft
z
Undercool a new bush with dry ice for about 2
hours and press it into position in the cylinder
block using a bench press. After the pressing
operation, measure the inside diameter of the
cam bush to check if it is not deformed.
EDM3053I

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Doosan DE12 Series Specifications

General IconGeneral
BrandDoosan
ModelDE12 Series
CategoryEngine
LanguageEnglish

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