Yanmar 4LHA-HTP User Manual

Chapter 5 Lubrication System
5. Lube Oil Cooler
i4LHA Series
6. Piston Cooling Nozzle
6-1 Piston cooling nozzle construction
A nozzle made from steel pipe mounted on the lower part
of cylinder body main gallery.Lube od from the main gallery is
sprayed out in a jet from the steel tip of this pipe.
This jet spray cools the piston surface when the piston goes
down
4LHA-HTE/HTZ E/HTP/HTZP
6-2 Inspection of piston cooling nozzle
(1) Check the nozzle tip hole to see if it is clogged up with dirt
or other foreign matter, and clean.
(2) Inspect the pipe mounting to see it it is or may become
loose or come off due to vibration, etc., and replace if nec-
essary.
Splash
Cylinder body
main gallery
Pislon
Piston cooling nozzle
(Dia. 2.0 mm)
Pislon cooling nozzle
Cylinder block
Oil injection volume
2.5 6 /min.
Oil injection pressure
0.39MPa(4.0kgf/cm
2
)
4LHA-DTE/DTZE/DTP/DTZP
Splash
Cylinder body
main gallery
Piston
Piston cooling nozzle
(Dia. 2.7 mm)
4LHA-STE/STZE/STP/STZP
Piston cooling nozzle same as 4LHA-DTE one.
Oil injection volume
3.5~4.0 & /min.
Oil injection pressure
0.39MPa(4.0kgf/cm
2
)
5-10

Yanmar 4LHA-HTP Specifications

General

Brand	Yanmar
Model	4LHA-HTP
Category	Engine
Language	English