DV11
Operation and Maintenance
51
Technical Information
Printed in Mar. 2005 PS-MMA0608-E1A
Condition Causes Remedies
7) Oil Consumption
Excessive
z Clearance between cylinder
liner & piston
Replace
z Wear of piston ring, ring
groove
Replace piston,
piston ring
z Piston ring's damage, stick,
wear
Replace piston ring
z Piston ring opening's
disposition improper
Correct position
z Piston skirt part damaged or
abnormal wear
Replace piston
z Oil ring's oil return hole
clogged
Replace piston ring
(1) Oil level elevated
z Oil ring's contact poor Replace piston ring
z Looseness of valve stem &
guide
Replace in set
z Wear of valve stem seal Replace seal
(2) Oil level lowered
z Cylinder head gasket’s leak Replace gasket
z Looseness of connection
parts
Replace gasket, repair
z Various parts' packing poor Replace packing
(3) Oil leak
z Oil seal poor Replace oil seal
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