2011 Mack Trident MP8 Air compressor carbon

[Transerv Logistics]

Hey guys

I've got a few MP8 Tridents used on highway for single trailer use sometimes but very rarely double use from Sydney to Brisbane back to Sydney and Melbourne run.

Replaced multiple compressor heads on the twin piston Wabco setup failing because of the carbon in the heads.

Is there a way to stop this from happening ? 

Been told fitting another air tank after air drier will sort the problem but i can't seem to wrap my head around the idea of the secondary air tank and how it will prevent it.

Any help will be much appreciated as the cost of this is crazy and getting out of control and the breakdowns are the worse especially when i send them on a regional run very hard to find people that will work on the mack mp8 motors or macks in general.

[kscarbel2]

May I suggest you contact Wabco Australia directly.

WABCO Australia Pty Ltd
Unit 3, 8 Anzed Court
Mulgrave, Victoria 3170
Australia
Phone: +63 3 8541 7000
Hotline: 1300-4-WABCO

Let us know what their local engineers say.

[Mackpro]

We had this issue when the Wabco 318 air compressors first  came on the ASET AC engines back in 04 and into 05. I talked to their engineering dept and they were aware of the issue and did a redesign of the head and valves and it stopped the issue.  However on the MP engines we still get carbon issues on the Wabco compressors but mainly after several  (5+) years of use.  Hopefully they can help with you issue. 

[Swishy]

When the compressor builds to 120 psi n the govoner cuts out ....... the compressor free wheels and the air intake to motor sux the oil up past the compressor rings n the heats burns the oil to make carbon

Make sure the engine aircleaners are clean with no restriction as this is when the oil is suxd up past the rings in compressor

simple fix to try is fit a small tractot air cleaner specially for compressor th@ way bypass n the main engine aircleaner

we have also found the copper pipe from compressor to 1st tank cokes up n restricts to air flow

cya

§wishy

[Danielmacksuperliner]

On 10/4/2017 at 10:36 AM, Transerv Logistics said:

Hey guys

I've got a few MP8 Tridents used on highway for single trailer use sometimes but very rarely double use from Sydney to Brisbane back to Sydney and Melbourne run.

Replaced multiple compressor heads on the twin piston Wabco setup failing because of the carbon in the heads.

Is there a way to stop this from happening ? 

Been told fitting another air tank after air drier will sort the problem but i can't seem to wrap my head around the idea of the secondary air tank and how it will prevent it.

Any help will be much appreciated as the cost of this is crazy and getting out of control and the breakdowns are the worse especially when i send them on a regional run very hard to find people that will work on the mack mp8 motors or macks in general.

Hi mate, have you had any resolution with the carbon? Also has anyone heard of the wabco compressors detonating, today had one blow both Walsch plugs out the bottom of compressor and had piston rods and piston on the ground under truck.