Isuzu N-Series. Manual — part 1290
Washing of battery
If the exterior parts of the battery are dirty, use warm water to wash them. To
prevent corrosion, apply a thin layer of Vaseline or grease to the surface of the
terminal stud of the battery.
Specific gravity of the battery electrolyte
If the electrolyte hydrometer reads 1.26 at 20益, it can be deemed that the bat鄄
tery is fully charged.
If the specific gravity is lower than 1.23, the battery needs recharging.
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Recommended brands of lubricants and diesels
For the best performance and the longest service life of your vehicle, proper brands of lube oils and diesels should be
used according to the recommendation in the list below.
Location
Oil products recommended
Quantity
Engine oil sump
diesel engine lube oil
Above CE class
For the viscosity, refer to the list of engine lube oil viscosity vs. temperature
6
Gearbox
Summer: GL-4/85W-90
2.7
Winter: GL-4/80W-90
Power steering gear
Auto gearbox oil
As needed
Rear axle
Medium load automotive gear oil
Class GL-4
For the viscosity, refer to the list of gear oil viscosity vs. temperature
3.5
Brake fluid reservoir
DOT3 or DOT4
As needed
Clutch fluid reservoir
DOT3 or DOT4
As needed
Wheel bearings
Multipurpose grease or lithium-based wheel bearing grease
As needed
Intermediate bearing of drive shaft
No.2 or 3 universal lithium-based grease for automobiles
As needed
Clutch yoke
No.2 or 3 universal lithium-based grease for automobiles
As needed
Drive shaft slide bushing
Foss EPT-2.5 grease
As needed
Driving universal joint
Foss EPT-2.5 grease
As needed
Engine cooling system
Glycol anti-freezing fluid
with preservative
As needed
Fuel tank
Summer: No.0 quality light diesel
Winter: No.-10 quality light diesel
Ambient temperature below -30益: No.-35 quality light diesel
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Lube oils must be selected and used carefully according to the lubricated points, and it is especially important to select
proper lube oil viscosity according to the ambient temperature;
Table of diesel viscosity for diesel engines
Table of gear oil viscosity
Infill diesel engine lube oil
Infill gear oil
Lubrication
渊single class冤
enviromment
temperature
渊multilevel冤
Correlation of engine lube oil
viscosity vs ambient temperature
OWNER爷S MANUAL
JAC High end Light Trucks
渊single class冤
Correlation of engine lube oil
viscosity vs ambient temperature
渊multilevel冤
enviromment
temperature
List of lubrication points
Steering gear
drag link
clutch fluid&brake fluid
king steering pin
front hub bearing
tie rod end
engine
rear leaf spring pin
rear hub bearing
differential
rear leaf spring lifting lug pin
king steering pin
front hub bearing
tie rod end
gearbox
drive shaft universal joint
drive shaft universal joint
drive shaft slide bushing
rear leaf spring pin
drive shaft universal joint
rear hub bearing
rear leaf spring lifting lug pin
at the first 1000km
every other month or 3000km
every 6 months or 18000km
every 8 months or 24000km
every other year or 36000km
Lubrication points
replace
W:wheel bearing grease
check, infill or lubricate
C: multipurpose grease
E: engine oil
M: lithium-based grease
G: gear oil
B: brake fluid
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Guide to lubrication
Change of the engine oil
Remove the drain plug in the lower part of the oil sump, and drain away the
engine oil in the engine crankcase.
Retighten the drain plug after complete drainage of the engine oil in the engine
crankcase and the fuel filter.
Afterwards, pour the new engine oil of the specified grade into the engine
crankcase through the oil filling port in the cylinder head. Note: Hot engine oil
may scald skins, so please wait for the engine to cool down before draining oil.
The engine oil surface level in the oil sump is measured by the dipstick fixed on
the inner side of the engine. When measuring, the engine should not be run鄄
ning, wait for the oil surface to become still before pulling out the dipstick, and
wipe off the oil from the dipstick with clean cotton cloth. Dip the dipstick into the
oil sump again to the bottom, and then pull it out to check the oil level. There
are two scale lines on the dipstick, the engine oil level should not be below the
lower scale, or there will be difficult oil supply. But the engine oil level should
not be over the upper scale line, otherwise there will occur carbon deposition,
fumes and oil permeation, etc. Therefore, apart from constant attention to the
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OWNER爷S MANUAL
JAC High end Light Trucks
normality of the engine oil pressure, the engine oil surface level should be
checked before driving out and at an interval of 300-500km.
Replacement of gearbox oil
Screw off the drain hole plug (D) in the bottom of the gearbox casing, drain the
oil out of the gearbox casing. Then, infill the specified lubricant oil into the
gearbox casing through the level inspection hole, until the oil level goes up to
the screw plug (L)of the level inspection hole.
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Replacement of differential oil
Screw off the drain hole plug (D) in the bottom of the rear axle case to drain the
gear oil in it, infill the specified gear oil into the rear axle case through the level
inspection hole, until the oil level goes up to the screw plug (L)of the level in鄄
spection hole.
Replacement of the greases for the front and rear hub bearings
Replacement of the greases for the front and left hub bearings needs disas鄄
sembly and reassembly of the bearings, so please entrust the authorized JAC
service stations to do that. Proper maintenance and driving can prolong the ve鄄
hicle service life, but also can improve the fuel and oil economic efficiency.
OWNER爷S MANUAL
JAC High end Light Trucks
Replacement of steering oil and fluid
Exhaust fluid
1. Jack up the front axle off the ground completely.
2. Remove the oil pipes (2 pieces) between the steering gear and the power
steering oil reservoir.
3. After the steering fluid is drained off, start the engine in short time, turn the
steering wheel right and left to its limit positions without over 15 seconds, until
the residual fluid is completely drained from the steering pipes.
New fluid fill-up
1. Fix the removed oil pipe in the oil pot and infill the specified power steering
fluid.
2. Fill in the power steering fluid up between the scale marks in the oil pot.
Take care that the fluid surface sinks in parallel with the fill-up, so as to keep a
stable level against any air trapped in.
3. Lower down the front wheels onto the ground, start the engine into idle
speed for several minutes, and rotate the steering wheel right and left.
4. Check the level against the scale mark, and add some more if needed.
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