Lube Oil Filter; Lube Oil Filter Construction; Lube Oil Filter Replacement - Yanmar 3JH4E Service Manual

8.3 Lube oil filter

8.3.1 Lube oil filter construction

The lube oil filter is a full-flow paper element type and a cartridge type easy to remove.
It is mounted to the side of the cylinder body with the filter bracket.
To prevent seizure in the event of the filter clogging, a bypass circuit is provided in the oil filter. The
bypass valve in the filter element opens when the difference in the pressure in front and behind the
paper element reaches 0.08-0.12MPa (0.8-1.2kg/cm
Engine model
Part No.
Type
Filtration area
Discharge volume
Pressure loss
By-pass valve
regulating pressure

8.3.2 Lube oil filter replacement

Refer to 2.2.2(2).
2
). Then the lube oil will flow in the bypass circuit.
Unit
- 119305-35150
-
2
m
l/min
MPa
0.03-0.05
2
(kgf/cm )
MPa
0.08-0.12
2
(kgf/cm )
257
8. Lubrication system
3JH4E
Full flow, paper element
0.10
30
(0.3-0.5)
(0.8-1.2)
4JH4E
4JH4-TE
4JH4-HTE
129150-35152
0.12
30
0.02-0.04
(0.2-0.4)
0.08-0.12
(0.8-1.2)