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Related Medium and Heavy Trucks Questions
I have a 3306 that has bent/broken the rocker shaft twice at
Hi, I have a 3306 that has bent/broken the rocker shaft twice at no. 6 intake. The valve and guide looks OK, the camshaft looks OK and there isn't any sign of the piston hitting the valve. We have run… read more
catmastertech
catmastertech
Field service technician
Vocational, Technical or Trade Scho
1,317 satisfied customers
I need to replace the rocker arm on Nr 7.....and when
I need to replace the rocker arm on Nr 7.....and when cranking the engine to lower the rods to the lowest point,the left rocker stays loose … read more
Mike Mcmillan
Mike Mcmillan
Triage Tech/Shop Foreman
Associates
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How are you remember I spoke t u about cummins that it was
Hello how are you remember I spoke t u about cummins that it was hard to turn I asked u about if that timing would it cause that ok this is what I found a broken rocker… read more
NicholasM1019
NicholasM1019
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Vocational, Technical or Trade School
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Engine knock, no smoke at all. It's in #2 didnt start until
Engine knock, no smoke at all. It's in #2 didnt start until after i changed fuel lines … read more
Bradey V
Bradey V
Certificate
I will try and get straight to the point; our c9 [serial
Second opinion] I will try and get straight to the point; our c9 [serial number C9A00831-ARR. NO.(###) ###-#### has been changed out with a new C9 engine [serial number C9Z00679-ARR.NO.(###) ###-####;… read more
Wayne
Wayne
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Vocational, Technical or Trade Scho
4,563 satisfied customers
I will try and get straight to the point; our c9 [serial
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Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
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I HAVE A 3176B CAT I HAVE ADJUSTED VALVES AND INJECTORS
I HAVE A 3176B CAT I HAVE ADJUSTED VALVES AND INJECTORS THERE IS A MISFIRE ON NUMBER 4 CYLINDER CHECKED ALL WIRING COMPRESSION IS 400 LBS. WE HAD A BENT PUSH ROD ON NUMBER 4 REPLACED IT BUT ARE STILL … read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
5,454 satisfied customers
It started to clatter while driving down the interstate.
It started to clatter while driving down the interstate. When I slowed down it stopped but had to go slower and slower to get to a safe spot to stop. Never lost oil pressure. It starts right up and id… read more
Mike Mcmillan
Mike Mcmillan
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Trying to set injectors. Cpl 2026 ser# 11793354.. when
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cumminsdr
cumminsdr
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High School or GED
1,824 satisfied customers
Have a 3406c 585 hp in a boat. Ran perfect for a few years.
Have a 3406c 585 hp in a boat. Ran perfect for a few years. Then after sitting for 5 months with full tanks on of the injectors leaked in to the cylinders. When started it sounded like either had been… read more
Curtis B.
Curtis B.
Technician
Associate Degree
1,806 satisfied customers
I have a deutz 1011 turbo went bad we replaced it then the
i have a deutz 1011 turbo went bad we replaced it then the timing belt broke we replaced it the push rods and the rocker bolts now the crankcase builds enough pressure to blow the dipstick into orbit.… read more
Curtis B.
Curtis B.
Technician
Associate Degree
1,806 satisfied customers
400 big cam Cummins breaking pushrod in half, 11486 307, Yes
Yes nothing just change pushrods and keeps breaking … read more
cumminsdr
cumminsdr
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I working C7 Acert with diesel in the oil with major smoke,
I working C7 Acert with diesel in the oil with major smoke, problem started when someone he ran out of fuel and use starter fluid to start, I inspected and found bend push rod on intake valve #3 cylin… read more
Cat Man
Cat Man
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Vocational, Technical or Trade Scho
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Cat C7 engine just started blowing copious amounts of oil
Cat C7 engine just started blowing copious amounts of oil out of the blowby tube. The engine was rebuilt 300+ hours ago and has had no problems. The engine also does not appear to be running poorly as… read more
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Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
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I have a 3126 with bad injector, hold down bolt broken, pulled
I have a 3126 with bad injector, hold down bolt broken, pulled injector, the tip has been knocked off, looking down a the piston there is a small indentation as if it hit the injector, how could that … read more
Cat Man
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Recently overhauled M11 engine pushrod or crosshead problems.
Recently overhauled M11 engine pushrod or crosshead problems. For some reason they come loose . Need help please!… read more
cumminsdr
cumminsdr
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Have a 3406c cat, driver was outside truck while it was idling
Have a 3406c cat, driver was outside truck while it was idling said he heard bad knock type sound for a few seconds then it went away but was followed by a miss, I pulled the covers found #2exh pushro… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
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Hello, I need a gen detroit service manual in pdf form for
Hello, I need a gen detroit service manual in pdf form for an inframe job I am doing. It is a 2004 Freightliner w/ egr 14 liter engine ser#06r0748664. If no manual gen torque specs, rod,mains, head bo… read more
spankyjr1
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Vocational, Technical or Trade Scho
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Meet the Experts:

Daniel Wilson

Daniel Wilson

5,454 satisfied customers

Owner at DJ Wilson

Cat Man

Cat Man

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I am ASE Master Truck Certified.

Wayne

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

Jeremy

Jeremy

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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

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All types of Cummins applications

Curtis B.

Curtis B.

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Technician turned service manager on multiple lines of trucks and engines, used in industry.

Chris (aka-Moose)

Chris (aka-Moose)

Technician

462 satisfied customers

24 years of experience diagnosing & repairing

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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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