Will

Problem fixed, ended up being a brake booster. Thanks for all your help!

It’s a big leak, if I don’t step on the foot pedal it’ll leak all air out of the system

Nope, it’s been all fine until today

I replaced the dash valve 6 months ago, surely it’s not buggered. I can’t work out why when I push in the foot pedal the valve stops leaking?

I’ve replaced the valve and it’s still doing it mate. I can’t work it out

gday guys will here 1998 mack trident, i have full air and push my yellow button in and it leakes out of the exhaust part of the rear valve that services the rear boosters. i push the brake peddle in and the leak goes away and air builds up to normal again. i have pulled the service linesof each booster and no air is coming out when maxis are released so boosters are good. any idea where i should start looking now? thankyou will

gday guys will here 1998 mack trident, i have full air and push my yellow button in and it leakes out of the exhaust part of the rear valve that services the rear boosters. i push the brake peddle in and the leak goes away and air builds up to normal again. i have pulled the service linesof each booster and no air is coming out when maxis are released so boosters are good. any idea where i should start looking now? thankyou will

Front engine mount is new mate, replaced 6 weeks ago. Ok will have a look at them

Yep Australian spec, no stored codes at all. How to you fix the front cover flex? It could be that! Where abouts are the green pins?

Coolant is the correct level. CHR Mack trident. I can’t work it out

Yep the code went away, why would it be de rating itself? When it gets to 29psi the lightning bolt flickers on and off while de rating then go back to flat ground and everything goes back to normal? No boost sensor or ease gate on this engine. Nothing has been done to the engine recently or in fact for the last 12 months other then regular services.

Have a Mack 470 etech engine 1998 model. Boost pressure gets to 200kpa on gauge then starts to de rate itself, does this every time it gets to the 200kpa boost pressure. Throwing a 3-4 code which is engine position sensor, replaced both and still doing it. Just wondering if anyone out there would have any ideas what would be the cause. Thankyou will

No only 1 uni joint on firewall and one uni joint on the steering box

Put new cab mounts on, still does it. About an inch clearance

2 mounts on the gearbox are good, bolts are tight. Mount on the front of engine near flywheel are tight but still hitting turbo