Yanmar 3JH4E, Руководство по обслуживанию

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2. Inspection and adjustment
77
Removing the impeller
There are two kinds of special service tool for
removing impeller:
1) Remove the side cover of seawater pump.
2) Screw the puller A to the impeller.
3) Turn the M10 bolt of the puller clockwise and
the impeller will come out of pump body.
Note:
When replacing a used impeller with new one,
purchase an impeller with M18 thread. Turn the
M18 screw side of the impeller to the cover
side, and install it.
(6) Replace the fresh water
Be sure to replace the fresh water every year.
When the Long Life Coolant Antifreeze (LLC)
is used of the specified type, the replacement
period of two years can be obtained.
Use clean soft water and be sure to add the
Long Life Coolant Antifreeze (LLC) to the
cooling water in order to prevent rust built up
and freezing.
Cooling performance drops when coolant is
contaminated with rust and scale.
Even if antifreeze or antirust is added, the
coolant must be replaced periodically because
the properties of the agent will degenerate.
1) Open the cocks for fresh water and extract
the fresh water.
Note:
One drain cock is behind the belt cover only for
3JH4E and 4JH4E. Remove the belt cover and
open the cock.
Puller A (Standard) 129671-92110
A B
M18 x 1.5 M10-length 40mm
Puller B (Option) 129671-92100 (mm)
A B
around 110 around 140
008424-04X
B
A
008425-01X
A
B