JAC Trucks. Service manual — part 83
To ensure safety and economic driving袁 regular routine repair and maintenance should be made accord鄄
ing to the items specified in this chapter.
Schedule of regular routine maintenance
To ensure driving safety and the best economic driving, regular check and maintenance should be entrusted to specified
JAC service stations according to the schedule of regular maintenance.
Maintenance job number
I院check and repair or replace as needed
A院adjustment
R院replacement or adjustment
T院tighten as per the specified torques
L院lubrication
The daily checking items shall be checked together with the checking of the following items.
The symbol 野*冶 means the following:
More frequent maintenance shall be done under harsh driving conditions. Please refer to the "Schedule of regular mainte鄄
nance under adverse driving conditions".
102
OWNER爷S MANUAL
JAC High end Light Trucks
Technical maintenance periods
1000km
渊per reading in odometer冤
3
6
9 12 15 18 21 24 27 30 33 36 39 42 45 48 51 54 57
Engine oil
R
R
R
R
R
R R
R
R
R
R
R
R
R
R
R
R
R
R
Technical maintenance periods
1000km
渊per reading in odometer冤
3
6
9 12 15 18 21 24 27 30 33 36 39 42 45 48 51 54 57
Engine oil
R R
R R
R R
R
R R
R
R R R
R
R R
R
R R
Schedule of regular maintenance under adverse driving conditions
Schedule of engine maintenance under general conditions
R院Change or replace
103
Schedule of regular maintenance
Period: 伊1000km 渊calculated per the readings from the odometer or
months, and do the maintenance at the time whichever comes first) or
months
1
3
6
9
12 15 18 21 24 27 30 33 36
-
1
2
3
4
5
6
7
8
9 10 11 12
Model HFC4DA1 series engine
Engine oil
Engine oil filter element
R
-
-
-
R
-
-
-
R
-
-
-
R
Air filter element
-
-
-
I
-
-
I
-
-
I
-
-
R
Fuel filter
-
-
I
-
I
-
R
-
I
-
I
-
R
Idling and acceleration functions
-
I
I
I
I
I
I
I
I
I
I
I
I
Engine oil leakage and contamination
-
I
I
I
I
I
I
I
I
I
I
I
I
Fuel leakage
I
I
I
I
I
I
I
I
I
I
I
I
I
Valve gap
A
-
-
-
-
-
-
-
-
-
-
-
A
fuel pump function
-
-
-
-
-
-
-
-
-
-
-
-
I
Fuel tank
-
-
-
-
-
-
-
-
-
-
-
-
I
Oil/water separator
-
I
I
I
I
I
I
I
I
I
I
I
I
Spraying state under oil spray pressure
-
-
-
-
-
-
I
-
-
-
-
-
I
Oil injection timing
-
-
-
I
-
-
I
-
-
I
-
-
I
Contraction pressure
-
-
-
-
-
-
-
-
-
-
-
-
I
Cooling system leakage
-
I
I
I
I
I
I
I
I
I
I
I
I
Tension and damage of the drive belt
I
I
I
I
I
I
I
I
I
I
I
I
I
Engine control mechanism
-
L
L
L
L
L
L
L
L
L
L
L
L
Damage and slack of exhaust pipe and its fittings
-
-
-
I
-
-
I
-
-
I
-
-
I
Clutch
Clutch fluid and brake fluid
-
-
-
-
-
-
-
-
-
-
-
-
R
Clutch function
-
I
I
I
I
I
I
I
I
I
I
I
I
Travel and free travel of clutch pedal
-
I
I
I
I
I
I
I
I
I
I
I
I
Transmission
Transmission oil
R
-
-
-
-
-
-
-
R
-
-
-
-
Oil leakage
I
I
I
I
I
I
I
I
I
I
I
I
I
Slack of gear control mechanism
-
-
-
-
-
-
-
-
-
-
-
-
I
Gear control mechanism
-
L
L
L
L
L
L
L
L
L
L
L
L
104
OWNER爷S MANUAL
JAC High end Light Trucks
Period: 伊1000 km (calculated per readings from the odometer or
months, and do the maintenance at the time whichever comes first) or
the months
1
3
6
9
12 15 18 21 24 27 30 33 36
-
1
2
3
4
5
6
7
8
9 10 11 12
Propeller shaft:
Universal joint and slip cap
-
-
-
-
-
-
L
-
-
-
-
-
L
Slack connecting parts
-
-
-
I
-
-
I
-
-
I
-
-
I
Over-abrasion of the spline
-
-
-
-
-
-
-
-
-
-
-
-
I
Rear axle:
Differential oil
R
-
-
-
-
-
-
-
R
-
-
-
-
Oil leakage
I
I
I
I
I
I
I
I
I
I
I
I
I
Deformation and damage of the semi-axle at the rear axle
-
-
-
-
-
-
-
-
-
-
-
-
I
Deformation and damage of the rear axle housing
-
-
-
-
-
-
-
-
-
-
-
-
I
Front axle:
Deformation and damage of the front axle
-
-
-
-
-
-
-
-
-
-
-
-
I
Steering system:
Steering gear oil
-
-
-
-
-
-
-
I
-
-
-
-
I
Leakage of the steering system
-
I
I
I
I
I
I
I
I
I
I
I
I
Slack and damage of the steering system
-
-
-
I
-
-
I
-
-
I
-
-
I
Slack of universal joint and front axle accessories
-
-
-
I
-
-
I
-
-
I
-
-
I
Steering wheel windage
-
I
I
I
I
I
I
I
I
I
I
I
I
Steering wheel function
-
I
I
I
I
I
I
I
I
I
I
I
I
Steering mechanism rods
Over gap of the bearings
-
-
-
-
-
-
-
-
-
-
-
-
I
Slack and damage of steering mechanism
-
-
-
-
-
-
-
-
-
-
-
-
I
Left and right turning radius
-
-
-
-
-
-
-
-
-
-
-
-
I
Front wheel adjustment
Braking system:
Braking fluid and clutch fluid
-
-
-
-
-
-
-
-
-
-
-
-
R
Leakage from braking system
-
I
I
I
I
I
I
I
I
I
I
I
I
Service brake function
-
I
I
I
I
I
I
I
I
I
I
I
I
Friction lining gap
-
I
I
I
I
I
I
I
I
I
I
I
I
Abrasion of friction lining and brake drum
-
-
-
I
-
-
I
-
-
I
-
-
I
Brake pedal travel and free travel
I
I
I
I
I
I
I
I
I
I
I
I
I
-
L
L
L
L
L
L
L
L
L
L
L
L
-
-
-
-
-
-
-
-
-
-
-
-
I
Schedule of regular maintenance
105
Period: 伊1000 km (calculated per readings from the odometer or
months, and do the maintenance at the time whichever comes first) or
the months
1
3
6
9
12 15 18 21 24 27 30 33 36
-
1
2
3
4
5
6
7
8
9 10 11 12
Parking brake:
Parking brake wire cable
-
I
I
I
I
I
I
I
I
I
I
I
I
Parking brake function
-
I
I
I
I
I
I
I
I
I
I
I
I
Handle travel of parking brake
-
I
I
I
I
I
I
I
I
I
I
I
I
Friction lining abrasion and damage
-
-
-
-
-
-
-
-
-
-
-
-
I
Brake drum abrasion and damage
-
-
-
-
-
-
-
-
-
-
-
-
I
Ratchet wheel abrasion and damage
-
-
-
-
-
-
-
-
-
-
-
-
I
Suspension:
Leaf spring damages
-
I
I
I
I
I
I
I
I
I
I
I
I
Slack and damage of the fixing parts
-
I
I
I
I
I
I
I
I
I
I
I
I
Shock absorber leakage
-
-
-
I
-
-
I
-
-
I
-
-
I
Unbalance of leaf spring due to weakened elasticity
-
-
-
-
-
-
-
-
-
-
-
-
I
Wheels:
King pin
T
T
T
T
T
TI
T
T
T
T
T
T
T
Wheel hub damage
-
I
I
I
I
I
I
I
I
I
I
I
I
Hub bearing lubrication
-
-
-
-
-
-
R
-
-
-
-
-
R
Tire pumping pressure and damage
-
I
I
I
I
I
I
I
I
I
I
I
I
Tire transposition
-
-
-
R
-
-
R
-
-
R
-
-
R
Slack of the front hub bearing
Slack of the rear hub bearing
-
-
-
-
-
-
I
-
-
-
-
-
I
Electrical system equipment:
Starter function
-
-
-
-
-
-
-
-
-
-
-
-
I
Battery electrolyte specific gravity
Slack and damage of wire harness and terminal studs
-
I
I
I
I
I
I
I
I
I
I
I
I
-
-
-
I
-
-
I
-
-
I
-
-
I
-
-
-
I
-
-
I
-
-
I
-
-
I
Schedule of regular maintenance
106
OWNER爷S MANUAL
JAC High end Light Trucks
Adverse driving conditions:
淤 Frequent shuttle in short distances;
于 Running on rough and rugged roads;
盂 Running in dusty roads;
榆 Running in severe cold weather;
虞 Running in roads with salty atmosphere;
Items
Period
Condition
1
2
3
4
5
1+4
Engine oil
Engine oil filter element
Replace every 1600km
1
1
Exhaust pipe and its fixing parts
Replace every 4500km
1
1
1
1
Air filter element
Replace every 1800km
1
Slack and damage of the steering system
Replace every 4500km
1
Abrasion of universal joint and propeller shaft spline
Replace every 9000km
1
Transmission oil and differential oil
Replace every 9000km
1
Brake friction lining and brake drum
Replace every 1500km
1
1
Replace every 4500km
1
1
1
Maintenance under adverse driving conditions
107
Guide to maintenance
Daily check:
Engine oil level
Pull out the oil leveler, wipe it clean and put it back again.
Pull out the oil leveler again to check if the oil level is between the upper and
lower limits. Also check the oil contamination degree from the oil leveler.
Before checking the oil level, the truck should be parked on flat ground, and
should wait 5 minutes after the engine cuts out.
Fan belt
Finger press the middle part of the belt with 98Nm force, to check if the fan belt
deflection is in the range of 8-12mm.
Meanwhile, check the belt for any cracks or damages.
108
OWNER爷S MANUAL
JAC High end Light Trucks
If the belt tension is too small, the battery may be undercharged or the alterna鄄
tor gets overheated. But the over-tension will bring about damages to the AC
engine or V belt.
The fan belt should be carefully checked. If it is broken, the vacuum booster
and the exhaust auxiliary brake will not able to function.
Battery electrolyte level
The battery electrolyte level should be between the upper and lower limits. If
the level is too low, distilled water should be added in time.
109
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