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- Trucker's Forum
- General Category
- DT-12 transmission
Page 1 of 1
Kevin L.'s Comment
Kevin L.
Scranton, PA
Rookie Solo Driver
Posts: 117
Joined Us:
6 years, 6 months ago
5 Photos
6 years ago
Anyone out here experience any issues with a DT-12 Transmisison popping into neutral then though it errors that indicate sensor or trans air pressure to low? The truck in question has under 80k miles on it.
G-Town's Comment
G-Town
Moderator
Lewes , DE
Experienced Driver
Posts: 10634
Joined Us:
8 years, 7 months ago
424 Photos
6 years ago
The newer auto-shift transmissions rely on air pressure to operate. During a drop and hook , or moving the tandems , anything that requires air to be released is typically when this happens. Let the pressure build back up before trying to move.
If it happens while driving, it could be a sign of an air leak. If that's the case, report it and get it checked as soon as possible.
Tandems:
Tandem Axles
A set of axles spaced close together, legally defined as more than 40 and less than 96 inches apart by the USDOT. Drivers tend to refer to the tandem axles on their trailer as just "tandems". You might hear a driver say, "I'm 400 pounds overweight on my tandems", referring to his trailer tandems, not his tractor tandems. Tractor tandems are generally just referred to as "drives" which is short for "drive axles".
Tandem:
Tandem Axles
A set of axles spaced close together, legally defined as more than 40 and less than 96 inches apart by the USDOT. Drivers tend to refer to the tandem axles on their trailer as just "tandems". You might hear a driver say, "I'm 400 pounds overweight on my tandems", referring to his trailer tandems, not his tractor tandems. Tractor tandems are generally just referred to as "drives" which is short for "drive axles".
Drop And Hook:
Drop and hook means the driver will drop one trailer and hook to another one.
In order to speed up the pickup and delivery process a driver may be instructed to drop their empty trailer and hook to one that is already loaded, or drop their loaded trailer and hook to one that is already empty. That way the driver will not have to wait for a trailer to be loaded or unloaded.
Kevin L.'s Comment
Kevin L.
Scranton, PA
Rookie Solo Driver
Posts: 117
Joined Us:
6 years, 6 months ago
5 Photos
6 years ago
Got it towed to freightliner but not making any money while its in the shop like that and no idea how long it will take to get fixed. Personally i think its an air pressure sensor in the trans but im no expert
andhe78's Comment
andhe78
Buffalo, NY
Experienced Driver
Posts: 471
Joined Us:
6 years, 10 months ago
27 Photos
6 years ago
Make sure you keep track of what time you broke down and what time you got back into your truck and send in your breakdown macro. I’ve had no problems getting breakdown pay from Maverick. At least it’s something.
PackRat's Comment
PackRat
Moderator
Home State: VA
Experienced Driver
Posts: 10048
Joined Us:
8 years, 4 months ago
855 Photos
6 years ago
How much air pressure were you losing after parking for 10 hours? Enough to set the low air alarm off? I had an air leak on the auto transmission I had in a T-680. Was a universal elbow fitting on the transmission air output hose. It would lose 80 psi of air in less than 3 hours while parked. Changed it out to a normal AN fitting elbow and no more issues.
HOS:
Hours Of Service
HOS refers to the logbook hours of service regulations.Kevin L.'s Comment
Kevin L.
Scranton, PA
Rookie Solo Driver
Posts: 117
Joined Us:
6 years, 6 months ago
5 Photos
6 years ago
I got a call a few hours ago from fleet net saying my truck was fixed. I got a ride to it and they had not even looked at it. I waited anyhow to find out what was wrong with it and they seemed unsure after looking it over. They said I had about 20 error codes on the transmission clutch actuator not sure when it will be fixed or even if they will have to pull the trans or not. Guess I’m home for Easter
C T.'s Comment
C T.
Atlanta, GA
Experienced Driver
Posts: 1028
Joined Us:
8 years, 5 months ago
4 Photos
6 years ago
What year truck did you get? I had a 13 when I first started and had lots of problems with it
Kevin L.'s Comment
Kevin L.
Scranton, PA
Rookie Solo Driver
Posts: 117
Joined Us:
6 years, 6 months ago
5 Photos
6 years ago
CT,They gave me a 2018 with under 77k on it. It has a few light scratches on the passenger side.
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