Rotary Waste Oil Pump (Optional) - Yanmar 4LHA-HTP Operation Manual

Chapter 5 Lubrication System

7. Rotary Waste Oil Pump (Optional)

7. Rotary Waste Oil Pump (Optional)
A rotary waste oil pump to pump out waste oil during oil
changing is available as an option.
This is a vane type pump.
rotates the vanes and pumps out lube o i l .
7-1 Construction
Rotary waste oil pump
Delivery capacity
of one stroke
Delivery pressure
Suction head
Part No.
Rubber hose
Inner dia. x length
Part No. of rubber hose
Turning the handle
Rotary waste oil pump
0.13/ (7.93 in. )
3
0.147(1.5) MPa(kgf/ cm) or below
less than Im (39.37 in.)
124413-39100
012 x 1000mm
(0.4724 x 39.37 in.)
43720-001220
7-2 Inspecting the waste oil pump
(1) Disassemble the waste oil pump and check for spring
breakage or vane damage when there is an extreme
drop in discharge volume, and replace if necessary.
(2) Replace the oil seal if there is excessive oil leakage
from the handle shaft.
(3) Replace the impeller if there is an excessive gap
between the impeller and the covers on both sides of
casing. This will cause a drop in discharge volume.
(4) The hose coupling is coated with adhesive and screw-
ed in. It therefore cannot be disassembled.
5-11
i 4LHA Seriet
Rubber hose