Doosan D1146T - Maintenance Procedures; Engine Disassembly Steps

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Condition Causes Remedies
(4) Others
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Wear of crankshaft, thrust bearing Replace thrust bearing
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Camshaft end play increased Replace thrust plate
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Idle gear end play increased Replace thrust washer
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Timing gear backlash excessive Repair or replace
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Valve clearance excessive Adjust valve clearance
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Abnormal wear of tappet, cam Replace tappet, cam
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Supercharger inner part damaged Repair or replace
6) Fuel Consumption Excessive
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Injection timing incorrect Adjust
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Fuel injection amount excessive Adjust injection pump
7) Oil Consumption Excessive
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Clearance between cylinder Replace
(1) Oil level elevated liner & piston
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Wear of piston ring, ring groove Replace piston, piston ring
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Piston ring’s damage, stick, wear Replace piston ring
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Piston ring opening’s disposition Correct position
improper
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Piston skirt part damaged or Replace piston
abnormal wear
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Oil ring’s oil return hole clogged Replace piston ring
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Oil ring’s contact poor Replace piston ring
(2) Oil level lowered
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Looseness of valve stem & guide Replace in set
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Wear of valve stem seal Replace seal
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Cylinder head gasket’s leak Replace gasket
(3) Oil leak
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Looseness of connection parts Replace gasket, repair
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Various parts’ packing poor Replace packing
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Oil seal poor Replace oil seal