L322 td6 gearbox problem, not unusual.

tomcat59alan · Apr 10, 2019

Evening all, I'm asking for a friend because I wouldn't contemplate a TD6. He has forward gears but nothing in reverse.I have mentioned cheese and fecked, in that order but any diagnosis welcome ta.

Henry_b · Apr 10, 2019

This is often the failure of the TCC/PWM Solenoid

tomcat59alan · Apr 10, 2019

Henry_b said:
This is often the failure of the TCC/PWM Solenoid

Cheers Henry, what's the fix ?

Henry_b · Apr 10, 2019

tomcat59alan said:
Cheers Henry, what's the fix ?

Valvebody rebuild..

Chances are however that the rest of the'box isn't far behind..

When the TCC PWM solenoid is energized and TCC signal fluid pressure is present, it strokes the TCC regulator valve and regulates line pressure into the converter clutch apply passaged Due to the pulse width modulation of the solenoid, the regulator valve is continuously oscillating/moving. Excessive wear at the large spool diameter can prevent proper valve movement, causing it to slip. Excessive wear at the balance end of the bore can lead to harsh apply. Additionally, the OEM valve stops against the TCC PWM solenoid screen, resulting in damage or breakage. Debris from the broken screen can lodge at the reverse lockout valve, resulting in no reverse.

tomcat59alan · Apr 10, 2019

Henry_b said:
Valvebody rebuild..

Chances are however that the rest of the'box isn't far behind..

When the TCC PWM solenoid is energized and TCC signal fluid pressure is present, it strokes the TCC regulator valve and regulates line pressure into the converter clutch apply passaged Due to the pulse width modulation of the solenoid, the regulator valve is continuously oscillating/moving. Excessive wear at the large spool diameter can prevent proper valve movement, causing it to slip. Excessive wear at the balance end of the bore can lead to harsh apply. Additionally, the OEM valve stops against the TCC PWM solenoid screen, resulting in damage or breakage. Debris from the broken screen can lodge at the reverse lockout valve, resulting in no reverse.

Cheers mate, so fecked it is.

Henry_b · Apr 10, 2019

tomcat59alan said:
Cheers mate, so fecked it is.

The GM box is fecked from the start

How many miles are on it?

60-100k is usually their danger zone!

tomcat59alan · Apr 10, 2019

Henry_b said:
The GM box is fecked from the start

How many miles are on it?

60-100k is usually their danger zone!

Not sure mate but it looks like its had a hard life.

brianp38dse · Apr 10, 2019

tomcat59alan said:
Evening all, I'm asking for a friend

yeh weve all heard that one before

tomcat59alan · Apr 11, 2019

I wouldn't give a TD6 house room Brian.

Cheques in the post by the way and of course I love you, and I promise I won't etc.etc.

L322 td6 gearbox problem, not unusual.

tomcat59alan

Well-Known Member

Henry_b

Think outside, no box required.

tomcat59alan

Well-Known Member

Henry_b

Think outside, no box required.

tomcat59alan

Well-Known Member

Henry_b

Think outside, no box required.

tomcat59alan

Well-Known Member

brianp38dse

Well-Known Member

tomcat59alan

Well-Known Member

Similar threads