Doosan GL08K, Operation & Maintenance Manual

Page: 35 / 206

Technical Information - 29 -
NOTE :
However, it should not elapse longer than 75 sec, and if it did, the hue would change.
(4) Make the numerical value by comparing the test paper which hue has changed with the color
list of label on storage bottle.
(5) By comparing the hue changed into yellowish green or so with the green color indication of test paper
storage bottle, confirm the density. (Then, the density indication must be in the hue range of 33 % to 50 %).
(6) The brown at the middle of test paper and the lower pink color indication represent the additive
state for rust prevention, and the proper range is that the meeting numerical value of brown
(vertical) and pink color (horizontal) locates in the range of 0.3 to 0.8 at the color list of label on
the test paper storage bottle.
(7) In case of less than 0.3, replenish the additive for rust prevention (DCA4), and in case of more than 0.8,
pour out the cooling water about 50% and then readjust the density after refilling with clean fresh water.

Amount of Anti-freeze in winter
2.3.21. Fan belt

V - belt
Use a fan belt of specified dimensions,
and replace if damaged, frayed, or
deteriorated.
Check the fan belt for belt tension.
If belt tension is lower than the
specified limit, adjust the tension by
relocating the alternator. (specified
deflection: 10 ~ 15 mm when pressed
down with thumb)

Poly belt
Poly belt will be properly tensioned if
the deflection force "F" is applied
midway between the belt`s tangent
points with the pulley.
T = 0.015 (about 1.5mm per 100mm)
Ambient temperature (°C) Cooling water (%) Anti-freeze (%)
Over –10
– 10
– 15
– 20
– 25
– 30
– 40
85
80
73
67
60
56
50 15
20
27
33
40
44
50
Press here
Alternator
pulley
V-belt
Crank shaft pulley
"Y"
EB8O3011
EB5O6001