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Engine oil and filter
The engine oil and filter should be changed at those intervals specified in the maintenance schedule. If the car is being
driven in severe conditions, more frequent oil and filter changes are required.
Valve clearances
An incorrect valve clearance will not only result in rough engine operation but will also cause excessive noise and re
鄄
duced engine output.
Inspect valve clearance and adjust as required while the engine is cold.
Fuel lines and connections
Check the fuel lines and connections for leakage and damage. Replace any damaged or leaking parts immediately.
Fuel filter
A clogged filter can limit the speed at which the vehicle may be driven, damage the emission system and cause hard
starting. If an excessive amount of foreign matter accumulates in the fuel tank, the filter may require replacement more
frequently.
After installing a new filter, run the engine for several minutes, and check for leaks at the connections.
Vacuum and crankcase ventilation hoses
Inspect the surface of hoses for evidence of heat and/or mechanical damage. Hard and brittle rubber, cracking, tears,
cuts, abrasions, and excessive swelling indicate deterioration. Particular attention should be paid to examining those
hose surfaces nearest to high heat sources, such as the exhaust manifold.
Inspect the hose routing to assure that the hoses do not come in contact with any heat source, sharp edges or moving
Interval(Kilometers)
×
1000
1
5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100
Interval(Mile)
×
1000
0.6 3
6
9 12 15 18 21 24 27 30 33 36 39 42 45 48 51 54 57 60
NO.
Item
Service brake
6
Brake pedal free play
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Air dryer
Inspect every 1 year or 50,000
8
Air dryer heater plug
Inspect every 2 year or100,000km
Parking brake
1
Parking brake function
Inspect every 5,000km and every 2,000km after first adjustment
of 5,000km or if necessary
2
Drum for wear
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3
Lining for wear
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Suspension
1
Suspension for damage
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2
U-bolt
＊
Adjut the U.bolt every 20,000km after first adjustment of 5,000km
or if necessary
3
Leaf spring for damage
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Inspect every 5,000km or if necessary
4
Shock absorbers for oil leakage or damage
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Inspect every 5,000km or if necessary
Chassis
1
Bolts and units on chassis and body
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Inspect every 5,000km or if necessary
2
Oil for cab tilt
Inspect every 1 year ,replace every 2 year
3
Tractor coupler function and kingpin bearing
for damage and looseness
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4
Pintle hook and lunette-rye
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140
OWNER
’
S MANUAL
JAC HEAVY DUTY TRUCK
