MAINTENANCE
TB20J Plus Operation Manual
57
© Feb. 2023
Table 10-3 (Continued)
Grade
Recommended ambient
temperature
-35#
Above –29℃ (6.8℉)
-50#
Above -44℃ (-47.2℉)
NOTICE
Please go to a certified gas station to purchase
qualified fuel oil. It is recommended prepare an oil
storage tank with fuel filter and store the fuel oil in the
tank for more than two days to precipitate impurities
and water before use.
Engine Oil
The engine oil filled in the factory is generally 15W-40
oil of CJ-4 grade, which is suitable for use in areas with
temperature range of -15℃ ～40℃ (5～104℉). If the
ambient temperature is beyond the applicable range,
please select other appropriate engine oil.
The ambient temperature varies from region to region,
please choose the oil viscosity grade that suits your re-
gion according to the recommendations in the table
below.
Table 10-4
Viscosity grade
Recommended ambient
temperature
0W-30
-35～0℃ (-31～32℉)
5W-40
-25～30℃ (-13～86℉)
15W-40
-15～40℃ (5～104℉)
20W-50
0℃～50℃ (32～122℉)
Coolant
The coolant filled in the factory is generally -18℃ pre-
mixed coolant, which is suitable for use in areas with
ambient temperature above -18℃ (-0.4℉). If the ambi-
ent temperature is beyond the applicable range, select
other appropriate coolants.
The environment temperature varies from region to re-
gion, so please choose the coolant applicable to your re-
gion according to the recommendations in the table
below.
Table 10-5
Coolant type
Recommended
ambient
temperature
-18℃ premixed coolant Above -18℃ (-0.4℉)
-37℃ premixed coolant Above -37℃ (-34.6℉)
Mixed coolant with 50%
ethylene glycol anti-freeze
and 50% water
-32℃～0℃
(-25.6～32℉)
Mixed coolant with 60%
ethylene glycol anti-freeze
and 40% water
-54℃～-32℃
(–65.2～25.6℉)
10.3 TIRE ASSEMBLY
Check Tires and Rims
Check the tires and rims daily and replace the tire if any
of the following defects is found:
• The tire is severely cracked, broken, deformed or
has other abnormalities.
• The tire ply has a smooth, uniform cut with a total
length of more than 75mm (3in).
• The tire ply has a crack or fissure that exceeds
25mm (1in) in either direction.
• The tire has a perforation with the diameter of over
25mm (1in).
• The tire has a large bulge.
• The wear extent of the tire’s off-ground support sur-
face exceeds 25%.
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