Cooling Water Temperature Alarm; Sender Unit For Lube Oil Pressure Gauge - Yanmar 3JH3E Service Manual

Chapter 9 Electrical System
_7._W_a_r_n_in_g ___ D_e_v_ic_e_s ___________________________
3,4]H3(B)(C)E
7-2 Cooling water temperature alarm
A water temperature lamp and water temperature gauge,
backed up by an alarm in the instrument panel, are used
to monitor the temperature of the engine cooling water.
A high thermal expansion material is set on the end of the
water temperature unit. When the cooling water tem-
perature reaches a specified high temperature, the con-
tacts are closed, and an alarm lamp and buzzer are
activated at the instrument panel.
Fresh water pump
PT3ld
Printed in Japan
m:-,.;sm-H11009
Cooling water temperature switch
'-
V'
Main switch
1
J_
: Baltery
T
(Water temperature alarm circuit)
57.7mm
Green
9-43
/ ON
Operating temperature
I
OFF
97~103°C
87'C or high
Electric capacity
DC 12V, 1A
Response time
with
in
60
sec.
indication color
Green
Tightening torque
2.40~3.20kg-m
7-3
Sender unit for lube oil pressure gauge
The sender unit for the lube oil pressure gauge has a
mounting seat for mounting on the lube oil filter bracket.
Oil pressure is measured when the oil enters into the main
gallery after being fed from the lube oil cooler and passina
through the oil pressure control valve Be sure to mount a
vibration damper when mounting the oil pressure sender
unit.