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X. Lubrication system
Preparation data -----------10.1
Fault diagnosis ------------10.2
Oil pump -------------------10.3
10.1 Preparation data
Matters needing attention in operation
Worm and worm wheel should run flexibly without block and one side locking meanwhile the worm wheel has a
little leap axially, “O” ring in oil pump must not have edge-cutting.
No oil leakage comes from the plugs in oil pump, the sealing ring should be in good order.
Bolt 3 should be dismounted during the engine trial operation after assembling, retighten it firmly till to the oil
flowing out to be seen.
Function of the lubrication system：supplying lubricating oil to the wear surface to reduce part wear by turning
dry friction between surfaces into liquid friction between lubricating oil particles；cooling high-load parts；
absorbing impact from the bearing and other parts and reducing noises；increasing air tightness between the piston
ring and cylinder wall；cleaning and carrying away impurities on part surfaces.
Preparation reference
Item Standard Permitted limit
when changing the oil
0.1L /
machine oil
capacity
when dismantling
0.11L /
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