Medium and Heavy Trucks

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Related Medium and Heavy Trucks Questions
It's a 13 speed Eaton and it makes noise in around 60 miles
It's a 13 speed Eaton and it makes noise in around 60 miles an hour either in overdrive or not in overdrive it's at like a grinding noise … read more
Mike Mcmillan
Mike Mcmillan
Shop Foreman/Triage Tech
Associates
3,355 satisfied customers
18 speed transmission that is making a ringing noise in
18 speed transmission that is making a ringing noise in overdrive transmission has been rebuilt 3 times in last 2 weeks at dealer … read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
4,272 satisfied customers
Att Mack tech —-Have a Mack truck here vin y28m001887. The
Att Mack tech —-Have a Mack truck here vin y28m001887. The customer had vecu go out as Truxk would not start he got one from salvage yard now it all starts but speedometer is not working and giving sp… read more
Mike Mcmillan
Mike Mcmillan
Shop Foreman/Triage Tech
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3,355 satisfied customers
Oil leak on range change back of 18 speed mack box. Oil leak
Oil leak on range change back of 18 speed mack box … read more
Wayne
Wayne
Journeyman
Vocational, Technical or Trade Scho
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Same issue a Mack Eaton auto shift won't start look's like
Same issue a Mack Eaton auto shift won't start look's like transmission stuck on gear went I shut it down … read more
Expert
Expert
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Eaton super 10 will go in to R or 1st but does not move.,
eaton super 10 will go in to R or 1st but does not move., shifter goes in to the hole fine clutch in or out truck just doesnt move on R or 1.. 2nd gear on up works just fine.… read more
Mike Mcmillan
Mike Mcmillan
Shop Foreman/Triage Tech
Associates
3,355 satisfied customers
Eaton trans issue. 2002 peterbilt 379 eaton 18 speed rtlo
Truck hesitant sometimes to do range changes from high to low. Not the small plitter button. talking about the bigger paddle. Truck does not grind at all when its having issues. Sounds like its the range piston having issues. IF it does not complete the range change while in neutral, it will change the range the instant you touch a gear with the shifter. you can do this with the engine off as well. I was thinking to change out the range piston seals but the manual says you cant do this without removing auzilary section on this model trans for whatever reason. Local transmission shop told me its the synchros going out. I find this hard to believe because I get no grinding during range changes. … read more
Expert
Expert
6,952 satisfied customers
Speedometer not working. 2006 Kenworth T800; Eaton 10 speed
Speedometer not working. 2006 Kenworth T800; Eaton 10 speed manual; cummins ISX 400ST … read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
4,272 satisfied customers
I recently retuned my MP8 deleted the DPF and egr and gave
I recently retuned my MP8 deleted the DPF and egr and gave it 48 more hp it now doesn't want to pull can hardly make 100 km per hour loaded … read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
4,272 satisfied customers
I have a Mack CL chassis with an ISX Cummins, T318 Mack 18
I have a Mack CL chassis with an ISX Cummins, T318 Mack 18 speed transmission. The tranny is jumping out of gear. History-the truck originally came in with the bell housing bolts loose which egg shape… read more
spankyjr1
spankyjr1
Retired
Vocational, Technical or Trade Scho
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I am trying to install a H4106 Eaton 6 speed transmission on
I am trying to install a H4106 Eaton 6 speed transmission on a 538 Renault in a 1989 Mack Midliner. The transmission bellhousing measures about 18" across and has 10 bolts, it has a pushing clutch wit… read more
Wayne
Wayne
Journeyman
Vocational, Technical or Trade Scho
3,791 satisfied customers
I saw the answer about the under powered Mack engines CH635
I saw the answer about the under powered Mack engines CH635 330-350 hp. I also have two of these trucks. I have deleted the egr coolers but did not help much. Presently these trucks have rear differen… read more
Daniel Wilson
Daniel Wilson
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I have a 2008 mack with an eaton fuller 10 speed auto
I have a 2008 mack with an eaton fuller 10 speed auto shift.When I come to a complete stop, the truck wont shift back in gear and the service light comes on along with an F on the dashboard. Any sugge… read more
Jeremy
Jeremy
Certified Truck/Bus Technician
Associate Degree
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My Eaton Fuller 13 speed RTOC 18909A, it developed a severe
My Eaton Fuller 13 speed RTOC 18909A, it developed a severe grinding between low range and high range, only on the way up. What's the problem? what should I be doing to fix this?… read more
Wayne
Wayne
Journeyman
Vocational, Technical or Trade Scho
3,791 satisfied customers
Have an early production C-15 6nz engine that maintains 60
Have an early production C-15 6nz engine that maintains 60 psi oil pressure running down the road at normal highway speeds (55 -60 mph). When throttle is pressed down oil pressure drops to 40-45 almos… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
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What are the specs to get the best fuel mileage for a Detroit
What are the specs to get the best fuel mileage for a Detroit 60 series engine? from 2000 to 2007? and for the new style dd15 motor?… read more
Jeremy
Jeremy
Certified Truck/Bus Technician
Associate Degree
2,735 satisfied customers
I am looking at a 2010 lonestar that has a eaton fuller 16910
I am looking at a 2010 lonestar that has a eaton fuller 16910 CAS 10sp in it. I noticed that it has a clutch pedal, and i now have a 2007 peterbilt 379 with a automatic tranny and it doesn't have a cl… read more
JANECZFJ
JANECZFJ
158 satisfied customers
cat c15 accert I have lp22.5 tires and I think the truck is
cat c15 accert I have lp22.5 tires and I think the truck is set for 11r22.5 2" difference in dia. What do I do to set the speed and such on the computer? I see the P/mile in configuration. I am guessi… read more
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Cat Man
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5,142 satisfied customers
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Meet the Experts:

Daniel Wilson

Daniel Wilson

4,272 satisfied customers

Owner at DJ Wilson

Cat Man

Cat Man

Cat Engine Expert

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I am ASE Master Truck Certified.

Wayne

Wayne

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3,791 satisfied customers

worked on, Gmc, Macks, Freight liner,Mercedes Benz,,Ford, sterling

Jeremy

Jeremy

Certified Truck/Bus Technician

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ASE Med/HD Truck Technician, NATEF Diesel Engines and Electrical/Electronics Technician, Network Engineer specializing in CAN faults, Aftertertreatment, and vehicle communications

cumminsdr

cumminsdr

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Curtis B.

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Chris (aka-Moose)

Technician

280 satisfied customers

16 years of experience

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Disclaimer: Information in questions, answers, and other posts on this site ("Posts") comes from individual users, not JustAnswer; JustAnswer is not responsible for Posts. Posts are for general information, are not intended to substitute for informed professional advice (medical, legal, veterinary, financial, etc.), or to establish a professional-client relationship. The site and services are provided "as is" with no warranty or representations by JustAnswer regarding the qualifications of Experts. To see what credentials have been verified by a third-party service, please click on the "Verified" symbol in some Experts' profiles. JustAnswer is not intended or designed for EMERGENCY questions which should be directed immediately by telephone or in-person to qualified professionals.

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