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Isuzu N-Series. Manual - part 1312

Trouble symptom and probable cause

Checking and remedy

(3) Hot rear axle

a. Oil leak because of damaged seal gasket, loosen oil

drain plug, and jammed vent hole, result in insufficient lu鄄
brication

b. Bad lubrication

c. Tight over between pinion and driven gear, tight over

on bearing

a. Fill up and readjust

b. Replace lubrication accord the season
c. Readjust

p. Loose tightening bolts of differential case
q. Insufficient oil
r. Bad oil

p. Tighten
q. Fill up
r. Replace

(2) half shaft seal Leaking

a. Jammed rear axle vent hole
b. Bad lubrication

c. Tight between pinion and driven gear, tight bearing,

and tight over on bearing

a. Fill up and readjust
b. Replace lubrication accord the season
c. Readjust

HFC1048

series trucks

Trouble symptom and probable cause

Checking and remedy

(2) Shake of steering wheel, instable steering

a. Loosen steering linkage mechanism
b. Unbalance front wheel
c. Pendulate too much
d. Damaged grinding wheel

e. Heavy wear or too big clearance of steering linkage

mechanism

a. Tighten properly
b. Balance the wheel
c. Adjust
d. Replace
e. Replace parts

(1) Hard to steer and steering wheel with bad return

a. Distorted main shaft, sliding shaft or column
b. Loosen universal joint or column cover
c. Improper rotation of steering wheel bearing
d. Insufficient lubrication of steering linkage mechanism
e. Low pressure tire

a. Replace parts
b. Replace universal joint
c. Replace parts
d. Fill up lubrication

e. Inflate properly

7. Steering mechanism trouble shooting

Trouble symptom and probable cause

Checking and remedy

(5) Heavy steering

a. Bad steering gear
b. Bad steering gear
c. Improper preload sector gear bearing

a. Replace piston set
b. Check pump for output pressure, replace if necessary
c. Adjust the pretightening force of bearing

(3) Wander front wheel

a. One of front brake or damper is disabled
b. One of front tire low pressure
c. Disalign or break of front leaf spring
d. Damaged grinding wheel
e. Improper toe in of front wheel

a. Adjust the brake clearance or replace damper
b. Inflate tires
c. Check front spring assembly
d.Adjust or replace
e. Readjust

(4) Power steering bump leaking

a. Damaged oil seal or O ring
b. Damaged oil seal locking nuts or oil-drain plug

a. Replace
b. Repair

HFC1048

series trucks

Trouble symptom and probable cause

Checking and remedy

渊2冤brake moment is partial

渊a冤brake shoe plate unseemliness
渊b冤one side of brake shoe plate is rustiness
渊c冤shoe plate have oil dirt
渊d冤the wheel is empty.
渊e冤brake drum is change

渊a冤adjust
渊b冤grease
渊c冤clean
渊d冤ordain air press
渊e冤adjust and grind

(1)shortage of brake

渊a冤adjust the brake room
渊b冤have some dirty things
渊c冤brake cam and shoe brake are rustiness
渊d冤brake room epithelia and pipe are leak air
渊e冤brake valve lead air

渊f冤the distance between brake and shoe plate is too large

渊g冤brake drum
渊h冤have dirty things on the pipe
渊i冤enter air to brake valve is slowly

渊a冤adjust the pull rod
渊b冤use buck to washing
渊c冤clean the rustiness and grease
渊d冤change epithelia ,check the air part
渊e冤change valve base
渊f冤adjust
渊g冤adjust and change
渊h冤clean it
渊i冤check enter air of the karat

8. Running brake trouble shooting

Trouble symptom and probable cause

Checking and remedy

(3) Bad absorption

a. Insufficient damping fluid
b. Having no maintaince regularly
c. Damaged rubber collar

a. Fill up as rated
b. Maintain regularly
c. Replace

(1) Broken leaf spring

a. Load too much or partial to one wheel

b. Frequent emergency brake, drive too fast on uneven

road

c. Loosen U-bolt. Loosen or broken spring clamp
d. Failed damper

a. Load properly as rated
b. Keep your mind on driving, so that avoid emergency
brake and slower speed on uneven road
c. Tighten U-bolt. Tighten or replace spring clamp.
d. Repair or replace

2) Noise in driving

Check and replace rubber suspension part

10. Suspension trouble shooting

Trouble symptom and probable cause

Checking and remedy

a. Big clearance between brake pad and drum

b. Oil coat on brake pad or drum
c. Badly worn friction pad

a. Adjust the clearance until both its upper and lower is
0.65mm
b. Clean with water
c. Replace

9. Parking brake failure shooting

HFC1048

series trucks

Trouble symptom and probable cause

Checking and remedy

(1) Badly worn tire

a. High or low tire pressure
b. Too much overloading or dissymmetrical loading
c. Loosen wheel hub bearing
d. Improper toe-in of front wheel

e. Frequent emergency brake, flare up when starting, or

accelerate suddenly

f. No wheel transposition

a. Inflate by specification
b. Load as rated
c. Adjust
d. Adjust the toe-in until it is 3~6mm (for diagonal tire)
and 1~3mm (for radial tire)
e. Drive stably, don't drive too fast

f. Transposition regularly

11. Wheel trouble shooting

HFC1048

series trucks

No.

Vehicle type

HFC1048K

type truck

Engine type

YZ4102QF
YZ4105QF

CY4102BQ

Inside dimension

of the cargo body

(l伊w伊h)

渊mm冤

4130伊1960伊400

Axle
Base

(mm)

3308

HFC1048KR1

type truck

3800伊1960伊400

3308

HFC1048K1

type truck

CY4102BZLQ

YZ4102ZLQ

4130伊1960伊400

3308

Outside dimension

(l伊w伊h)

(mm)

5910伊2096伊2250

Engine

power

(ml/kW)

3856/70.6

4087/75

3856/70.6

3856/88
3432/81

HFC1048K1R1

type truck

CY4102BZLQ

YZ4102ZLQ

3800伊1960伊400

3308

5910伊2090伊2250

3856/88
3432/81

HFC1048KD

type truck

CY4102BZLQ

CY4102BZQ

3856/88
3856/88

5910伊2096伊2250

4130伊1960伊400

3308

喻尧Automotive model table of trucks

Content .. 1310 1311 1312 1313 ..