M1078 Transmission Problem

[Pablo5910]

Satchaser, did you ever get this sorted?

 

[Satchaser]

Satchaser, did you ever get this sorted?

The truck is at a shop now. The mechanic, who seems knowledgeable, says that he has traced the problem to a Solenoid ($150). The part was on order last week and I am hoping to get it on the road again soon.

I will report back with actual information once it comes out of the shop. Thanks for checking in.

 

[Satchaser]

After a very long while, and changing out all of the Solenoids, the mechanic reports that the front pump is not producing and needs to be replaced. A couple of questions to the community:
1) Does anyone know a good source for these parts (Front Pump Assembly -Complete + Stetter(??) )?
2) Does anyone know if these parts can be replaced without removing the entire transmission?
3) Does anyone know if, to remove the transmission, you need to remove the entire bed first?
4) Does anyone know a source for a new or rebuilt transmission?

Thank you for the help.

 

[NDT]

Huh? Have you personally witnessed below spec main hydraulic pressure on the “main” test port? Less than 218 psi? Refer to appendix B.

 

[BERZERKER888]

I can answer # 4

MTP Drivetrain in Louisiana has retrans available with a 30 day lead in time..
your point of contact is :

DaMara Hansen
Inventory Sales Specialist
MTP Drivetrain Services
205 McDonald Drive, Many, LA 71449

Direct Line: (31 508-5101

Office Line: 318-256-2083 Ext 507

Cell: (870) 464-7266
Email: dhansen@mtp

cost of a rebuilt/dyno'd Allison MD3070PT is $9975 with a 1 year parts warranty....ask me how I know..

 

[Satchaser]

Huh? Have you personally witnessed below spec main hydraulic pressure on the “main” test port? Less than 218 psi? Refer to appendix B.

Thank you, but Appendix B of what?

 

[ramdough]

After a very long while, and changing out all of the Solenoids, the mechanic reports that the front pump is not producing and needs to be replaced. A couple of questions to the community:
1) Does anyone know a good source for these parts (Front Pump Assembly -Complete + Stetter(??) )?
2) Does anyone know if these parts can be replaced without removing the entire transmission?
3) Does anyone know if, to remove the transmission, you need to remove the entire bed first?
4) Does anyone know a source for a new or rebuilt transmission?

Thank you for the help.

Be careful, some mechanics (if not most) debug problems by throwing parts at them until things work again. When a mechanic replaces more than one part to solve a problem I start watching very closely….. but then again, I don’t use mechanics anymore.


Sent from my iPhone using Tapatalk

 

[NDT]

Thank you, but Appendix B of what?

See post 2

 

[Satchaser]

See post 2

Thanks, I see appendix B now. I will print and take over to the mechanic to observe. He just quoted me ~$12k for a rebuilt transmission and $8k installation. I do not think he is dishonest, I think he just may not have the specific experience.

I do not see putting $20k into this repair. Maybe I will convert it to electric, which will probably only cost me $80k!

 

[Skyhawk13205]

Thank you, but Appendix B of what?

the Wtec 2 troubleshooting manual, look back in the thread I think NDT linked it.

Appendix B gives the clutch and system pressures values.

 

[BERZERKER888]

Thanks, I see appendix B now. I will print and take over to the mechanic to observe. He just quoted me ~$12k for a rebuilt transmission and $8k installation. I do not think he is dishonest, I think he just may not have the specific experience.

I do not see putting $20k into this repair. Maybe I will convert it to electric, which will probably only cost me $80k!

you're getting screwed...my rebuilt tranny with 1 year parts warranty from MTP in Louisiana is $10.512 delivered to Daytona.. $2k-$3k for installation by Daytona CAT/RingPower

point of contact at MTP

DaMara Hansen Inventory Sales Specialist MTP Drivetrain Services 205 McDonald Drive, Many, LA 71449 Direct Line: (31 508-5101 Office Line: 318-256-2083 Ext 507 Cell: (870) 464-7266 Email: dhansen@mtpdrivetrain.com Who we are: https://youtu.be/6ln2k5p9MXc5

 

[NDT]

Thanks, I see appendix B now. I will print and take over to the mechanic to observe. He just quoted me ~$12k for a rebuilt transmission and $8k installation. I do not think he is dishonest, I think he just may not have the specific experience.

I do not see putting $20k into this repair. Maybe I will convert it to electric, which will probably only cost me $80k!

These prices should tell you he wants the truck gone. Swapping the transmission is a 2 day job, say 16 hours at what $150 an hour shop rate? $2400 labor.