Medium and Heavy Trucks

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I'm trying to take the slack out of the gear box, i have the
i'm trying to take the slack out of the gear box, i have the nut loose but cannot turn the screw. Can i take them out without tearing anything up and break it loose and put it back and reset? … read more
Mike Mcmillan
Mike Mcmillan
Triage Tech/Shop Foreman
Associates
415 satisfied customers
How to adjust valves and engine brake. 2007 mack. Tes just
How to adjust valves and engine brake JA: What's the make/model/year of your truck? Engine type? Customer: 2007 mack JA: Are you fixing your truck yourself? What have you tried so far? Customer: Tes j… read more
Wayne
Wayne
Journeyman
Vocational, Technical or Trade Scho
4,023 satisfied customers
I have a 3406 cat Im performing an over head I need the
I have a 3406 cat Im performing an over head I need the complete lash and torque specs for the injector, Jake assembly… read more
Wayne
Wayne
Journeyman
Vocational, Technical or Trade Scho
4,023 satisfied customers
2001 dt466. Reinstalling cylinder head. Replacing all head
2001 dt466. Reinstalling cylinder head. Replacing all head bolts. 20 short and 6 long. For accuracy what are the factory locations of the long head bolts? Ok to reuse washers? Thanks… read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
11,520 satisfied customers
There I have an 1982 mack garbage truck here, vin is
hey there I have an 1982 mack garbage truck here, vin is ***************** it has the E6 mack engine 2 valve. I am looking to see if anyone can help me with the overhead procedure and the lash specs f… read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
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I have a ch613 showing a 6-3 fault on electric malfunction
I have a ch613 showing a 6-3 fault on electric malfunction light. When I disconnect the fic unit it goes to a 6-2 fault. And all checks in harnesses seam ok? … read more
Mike Mcmillan
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Associates
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Need cyl head torque specs for 2001 e-7 427 mack. Mack ch613
need cyl head torque specs for 2001 e-7 427 mack JA: What's the make/model/year of your truck? Engine type? Customer: mack ch613 2001 engine E-7 427 JA: Are you fixing your truck yourself? What have y… read more
Mike Mcmillan
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I am installing a set of jake brakes on a Cummins ISM serial
Hi, I am installing a set of jake brakes on a Cummins ISM serial #35139257 CPL#8557. When installing the injector adjusting screws what do they mean by bottoming out the injector before backing off th… read more
cumminsdr
cumminsdr
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High School or GED
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I'm working on a mack E7 400. I am having trouble finding
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Wayne
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Journeyman
Vocational, Technical or Trade Scho
4,023 satisfied customers
I need the specs for a mack cylinder balance test. What is
I need the specs for a mack cylinder balance test. What is normal % range for each cylinder... allowable tolerances etc can anyone get me this info?… read more
Mike Mcmillan
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Associates
415 satisfied customers
I am looking at a past post, there are pictures that go
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Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
11,520 satisfied customers
2007 international 4300 dt466 vin# 1htmmaal77h387777 I
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Alex Olsen
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How do you change bosch fuel injection pump on mack e7 427
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Wayne
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Vocational, Technical or Trade Scho
4,023 satisfied customers
Is there someone who could help me out with the valve adjustment
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Wayne
Wayne
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Vocational, Technical or Trade Scho
4,023 satisfied customers
Looking for valve adjustment sequence for 2003 Mack Vision.
Looking for valve adjustment sequence for 2003 Mack Vision. Engine model# XXXXX Serial # XXXXX VIN# XXXXX Tappet cover says exhaust is .024, intake is .016 and engine brake is .021. Just need the sequ… read more
Wayne
Wayne
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Vocational, Technical or Trade Scho
4,023 satisfied customers
we are working on a 1991 mack with an e6 4 valve motor in it.
we are working on a 1991 mack with an e6 4 valve motor in it. the engine has the front cover pointer and markings on the damper pulley. we adjusted all of the valves and they are fine, but when we kee… read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
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We have a 2003 mack ch613 with an e7 engine that were are working
We have a 2003 mack ch613 with an e7 engine that were are working on. We pulled it apart and renewed the rings. After reassembling the unit we have two injectors not firing. We have removed cleaned an… read more
dieseldoctorkev
dieseldoctorkev
power system tech 1
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I NEED THE VALVE ADJUSTMENT PROCEDURE FOR A 98 MACK CH613,
I NEED THE VALVE ADJUSTMENT PROCEDURE FOR A 98 MACK CH613, I HAVE THEM CLOSE BUT THE ENGINE IS STILL RUNNING ROUGH AND I KNOW THEY NEED TO BE FINE TUNED, I JUST DONT HAVE ANY BOOK WORK ON THIS TRUCK… read more
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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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