225 

 

No. 165 Front wheel with abnormal sound when turning   

Malfunction Causes 

Solution 

 

1. Front suspension bolt loosening or damaged; 

Check front suspension bolt is loosening or damaged; 
fasten or replace it if any; 

Check ball head of tie rod, lower swing arm are 
loosening; replace it if any; 

2. Ball head of tie rod, lower swing arm loosening; 

Check ball head of lower swing arm is loosening; 
replace it if any; 

3. Rubber cover of lower swing arm damaged;   

Check rubber cover of lower swing arm is damaged; 
replace it if any; 

4. Pressure bearing of front wheel lack of 
lubricating oil or damaged;   

Check pressure bearing of front wheel lacks of 
lubricating oil or damaged; lubricate or replace it if any; 

Abnormal sound 
occur to front 
wheel when 
turning, while 
normally when 
driving straightly   

5. Outer ball cage of front wheel worn, loosening; 

Check outer ball cage of front wheel is worn, loosening; 
replace it if any; 

 

 
 

 

 

226 

 

Front wheel with 
abnormal sound when 
turning 

Fasten or replace 

Front suspension bolt loosening or damaged? 

Ball head of tie rod, lower swing arm loosening 

Replace 

Rubber cover of lower swing arm 
damaged 

Pressure bearing of front wheel lack of lubricating oil or 
damaged 

Lubricate or 
replace 

Replace 

Replace 

Outer ball cage of front wheel worn, loosening 

Abnormal 

Loosening 

Damaged 

Abnormal 

Abnormal 

Normal 

Normal 

Normal 

Normal 

 
 

 

 

227 

 

No.166 Heavy steering   

Malfunction  

Causes 

Solution  

(1) Ttire pressure not enough;   

Tire inflation   

(2) Fixed screws of steering knuckle loosening or 
falling out; 

Re-fasten  

(3) Inner, outer tie rod ball head adjusted too 
tighten or lack of oil;   

Adjust their matching clearance or lubricate   

(4) Bearing of drive part of steering gear having 
too large pretightening force, or driven part and 
lining matched too tighten;   

Adjust clearance   

(5) Meshing of drive, driven parts adjusted too 
tighten; 

Adjust gap 

(6) Steering gear is oil-free or lack of oil;   

Fill up lubricating oil   

(7) Thrust bearing of steering knuckle lack of oil or 
damaged;  

Replace thrust bearing   

(8) Steering shaft bent or its sleeve collapsed 
causing scratchin;   

Replace steering gear   

(9) Kingpin rear inclination or inclination too large 
or front wheel with negative outer inclination;   

Four wheels positioning   

Driver feels heavy 
and difficult while 
turning steering 
wheel to left or 
right during driving; 
when the vehicle is 
turning corner or 
turning around at 
low speed, hard or 
even unable to turn 
steering wheel. 

(10) Vehicle frame deformed causing incorrect 
positioning of front wheel.   

Correct vehicle frame or four wheels positioning 

 

 
 

 

 

228 

 

Fig 4 Diagnosis chart for heavy steering