JAC Trucks. Manual — part 123

92

93

Possible causes and characteristics of faults

Methods of check & elimination

渊4冤Brake drum heats

(a)Clearance between brake drum and shoe slice is too

small

(b) Return spring of the brake shoe slice ruptures or is

invalid

(a)Adjust

(b) Replace

渊3冤Brake deviates

(a) Clearances between brake drum and brake shoe slice

of each wheel are different from each other

(b) Brake drum distorts
(c) There is oil dirt on the brake drum or brake shoe slice

(d) Air pressures of tyres are not uniform
(e) Return spring of brake shoe slice ruptures
(f) Frame twists, front suspension is misplaced, front

wheel alignment angle changes

(a) Adjust the clearances to be uniform

(b) Replace
(c) After washing with petrol or buck, polish the shoe

slice with abrasive cloth

(d) Inflate according to specification
(e) Replace
(f) Correct, replace and take corresponding measures

Possible causes and characteristics of faults

Methods of check & elimination

(1) Tyres are exceedingly worn

(a) Tyre pressure is too low or too high
(b) Overload is too much or the loading is uneven.
(c) Wheel hub bearing looses
(d) Toe-ins of the front wheel are incorrect

(e) Emergency braking, sudden start, too frequent

speedup

(f) Interchanging of tyre crossly is not done

(a) Inflate according to specification
(b) Load according to specification
(c) Adjust

(d) Adjust to 4-6mm (diagonal tyre), 1-3mm (radial ply

tyre)

(e) Drive at a steady speed and do not drive too fast

(f) Interchange tyres crossly on scheduled date.

9. Wheel faults and elimination

HFC1045

series trucks

95

Possible causes and characteristics of faults

Methods of check & elimination

渊3冤Shock absorption is not very effective

(a) Lacking in shock absorber fluid
(b) Scheduled maintenance is not done
(c) Rubber rings damage

(a) Fill according to specification
(b) Scheduled maintenance should be done
(c) Replace

渊1冤Leaf spring breaks off

(a) The loading is too heavy or off position

(b) Emergency braking is applied too frequent, or speed

on uneven road is too high.

(c) U-bolts loose, armor plate clips loose or break

(d) Shock absorber is ineffective

(a)Load according to specification and arrange loads

reasonably.

(b) Concentrate on driving and avoid emergency braking

as possible as you can, lower the speed on uneven road

(c) Tighten U-bolts, armor plate clips or replace armor

plate clips

(d) Check & repair or replace

渊2冤There is

Check and replace fault rubber parts fro suspension sys鄄
tem

10. Faults of suspension mechanism and elimination

94

11. Faults of electrical parts and fault elimination

Possible causes and characteristics of faults

Methods of check & elimination

渊1冤The horn sounds continuously

(a) Connection is incorrect
(b) Some wire grounds and the spring is invalid

(a) Check and reconnect
(b) Remove, check and replace

渊2冤Capacity of electricity is insufficient

(a) new accumulator is not charged and discharged for

circulation and is not charged to rated quantity

(b) Generator cannot be charged or charged completely
(c) Pole plate damages
(d) Electrolyte level is too low or specific gravity is improper

(a) Charge sufficient electricity

(b) Check and repair the joints to eliminate faults
(c) Check and repair

(d) Add electrolyte and charge the accumulator with it re鄄

moved from the vehicle

HFC1045

series trucks

96

97

Possible causes and characteristics of faults

Methods of check & elimination

渊3冤Electrolyte of the accumulator is consumed too quickly

(a) Quantity of charging and discharging electricity is too

great; electrolyte vaporizes or overflows.

(b) Some part of the accumulator leaks
(c) Partition panel is damaged or broken down

(a) Decrease continuous starting time, and lower charging

electricity of generator

(b) Replace accumulator case
(c) Check and repair

渊44冤Accumulator self-discharges

(a) Certain part of the output line short-circuits
(b) Pole plates short-circuit
(c) Partition panel is damaged or broken down
(d) Outer surface of the accumulator is not clean, and

there are metal sundries

(a) Clean output line, eliminate fault of short-circuit
(b) Check and repair
(c) Check and repair
(d) Clean outer surface of the accumulator, tighten protec鄄

tion cover of the accumulator case, replace electrolyte if
necessary

VII尧Illustration of vehicle

渊玉冤 Special-purpose chassis
渊域冤 Truck
渊芋冤 Transport van
渊郁冤 Stake truck
渊吁冤 Van-type truck
渊遇冤 Mail car

HFC1045

series trucks

Tire

specifica鄄

tion

6.50-16
7.00-16

Tread

渊Front/Rear冤

(mm)

1580/1395

GVW

(kg)

Approach/

Departure

angle

(毅)

23/14

Curb

weight

(kg)

2180

Max.

Number of

allowable

passengers

in the cab

(person)

4490

2

Front suspension/

rear suspension

(mm)

1105/1380

Max.
Speed

(km/h)

Memo

95

ID No. of chassis院1218869
One of the following configurations
can be chosen for front leaf spring:
3pieces +2cushion

blocks

or

3pieces+4 cushion blocks

6.50-16
7.00-16

1580/1395

23/14

2180

4490

2

1105/1380

95

ID No.of chassis.院1219006
One of the following configurations
can be chosen for front leaf spring:
3pieces +2cushion

blocks

or

3pieces+4 cushion blocks

6.50-16 1580/1395 4490

3

1960

23/14

1105/1377

95

ID No. of chassis院1003613

No.

1

Vehicle model

HFC1043K8

Special-purpose

chassis

Engine model

Wheel base

(mm)

3308

Number of

leaf spring

(Front/rear)

3/16

2

HFC1043K8R1

Special-purpose

chassis

3308

3/16

3

HFC1045KS

Special-purpose

chassis

YZ4102QB

CY4102Q

3308

3+2/9+7

3+4/9+7

Contour dimension

渊length伊width伊height冤

(mm)

5793伊1810伊2160

5793伊1810伊2160

5790伊1830伊2150

Engine

displacement/power

(ml/kW)

3423/63

3268/57

4

HFC1045KR1S

Special-purpose

chassis

YZ4102QB

CY4102Q

3308

3+2/9+7

3+4/9+7

5790伊1830伊2150

3423/63

3268/57

5

HFC1045K1S

Special-purpose

chassis

4JB1

2771/57

5795伊1810伊2160

3308

3/16

YZ4102ZLQ

CY4100ZLQ

CYQD32T

HFC4DA1-1

4100QBZL

YZ4102ZLQ

CY4100ZLQ

CYQD32T

HFC4DA1-1

4100QBZL

3432/70

3707/70

3153/80.9

2771/68

3298/70
3432/70

3707/70

3153/80.9

2771/68

3298/70

(玉) Special-purpose chassis

HFC1045

series trucks

98

99