Geely Diagnosis Flow. Manual part — 46

181

No.134 Transmission shaking during driving

Malfunction Causes

Solution

Engine malfunction

Engine power output not balanced; some cylinder not working;
check operations of each cylinder through cylinder breaks;

Engine suspension malfunction

Check each cushion of suspension deforms, ages, ruptures;
change cushion if any.

Drive shaft malfunction

Check ball cage inside and outside the drive shaft is
excessively worn or loosening, drive shaft bends, and upper
and lower runout within 2mm; replace drive shaft assembly if
too large.

Tire or steel ring malfunction

Check tire is bubbling, line broken, and upper and lower
runout is within 1-3mm. replace tire, steel ring, front hub if too
large;

Transmission
shaking during
driving

Transmission inner malfunction

Check whether tooth of driving gear and driven gear of each
position falls out individually; check meshing clearance of
driving gear and driven gear of each position is too deep, and
check meshing mark and ensure middle part is well meshed;
check tooth of output shaft and differential gear ring falls out
individually;

182

Transmission shaking

during driving

Engine

Repair

Engine suspension

Replace

Drive shaft

Replace

Tire or steel ring

Dynamic balancing or

replace

Within transmission

Repair

Abnormal

Normal

Normal

Normal

Normal

Abnormal

Abnormal

Abnormal

Abnormal

183

No. 135 Auto transmission case oil temperature rises, reverse gear fails

Malfunction Causes

Solution

Check manual shifting valve is worn, or blocks. If
abnormal, replace control valve plate assembly or grind
control valve, making it normal;

Control valve plate fails

Check each relevant control valve is leaking; replace
valve body assembly if abnormal;

Check piston seal of control brake is damaged, leaking;
replace seal if abnormal;

Auto transmission case oil

temperature rises, reverse

gear fails

Reversing control brake malfunction

Check reversing control piston blocks; adjust or replace
piston if abnormal;

Reversing control brake

malfunction

Repair

Control valve plate fails

Replace

Auto transmission case oil
temperature rises, reverse

gear fails

Fails

Normal

Abnormal

184

No. 136 Auto transmission upshifts too late

Malfunction Causes

Solution

1. Check throttle tie-line, and step to the end, and throttle shall at
maximum position. If not possible, adjust throttle tie-line;

Throttle tie-line malfunction

2. Check tie-line of throttle position of auto transmission; there shall be
2-8mm clearance between tie-line bottom and pedestal, and adjust it if
not so;

Control valve plate malfunction

Check each control valve is worn, or blocks; if abnormal, grind it or
replace control valve assembly;

Governor valve malfunction

Check speed control valve blocks or leaks; if abnormal, repair or
replace governor valve;

Friction disk skids

Check friction disk clearance is normal; if not, replace friction disk or
flange, and adjust it normally;

1. Check filter is obstructed; if abnormal, clean or replace;

Oil pressure insufficient

2. Check main adjusting valve; if abnormal, check oil pump gear
clearance and strength of relief spring inside the oil pump conforms to
requirement; if abnormal, replace oil pump;

Throttle valve malfunction

Check throttle valve blocks or is worn, leaking; if abnormal, grind it or
replace valve plate assembly;

Shifting valve malfunction

Check shifting valve blocks, or is worn, leaking; if abnormal, grind it or
replace it;

Auto transmission

upshifts too late

Accumulator malfunction

Check accumulator blocks, or is worn, leaking; check accumulator
spring conforms to requirement; if abnormal, adjust or replace seal or
spring;