Medium and Heavy Trucks

Have truck repair questions? Ask an Expert

Ask an Expert,
Get an Answer ASAP!

The issue i'm having is on a TH83 Cat S/N 3RN04820. Anyway…

Customer Question
Hello my name is...

Hello my name is ***** ***** issue i'm having is on a TH83 Cat S/N 3RN04820. Anyway when the machine was first purchased we noticed that the coolant looked aweful oily. Also that the transmission wasnt working properly. So we drained the transmission oil to find some coolant in the bottom. We also figured thats where the oily coolant was coming from. Next we changed the transmission oil cooler and trasmission filter. The coolant was then fushed and replaced.

Mechanic's Assistant: Thanks. Can you give me any more details about your issue?

The transmission worked better after that but not as good as it should of. Now the transmission has stopped working altogether and the oil smells completely burnt. along with making a really loud wining noise. like a pump cavitating . Any ideas on where to start.

Submitted: 2 years ago.Category: Medium and Heavy Trucks
Show More
Show Less
Ask Your Own Medium and Heavy Trucks Question
Answered in 21 minutes by:
1/26/2016
Technician: Daniel Wilson,
 replied 2 years ago
Daniel Wilson
Category: Medium and Heavy Trucks
Satisfied Customers: 6,770
Experience: Owner at DJ Wilson
Verified

Hi Pat, My name is***** will be glad to help. Coolant is the worst thing to have in any engine or transmission due to its corrosive properties on the bearing surfaces, etc. Once the chemical process starts from coolant contamination, failure is inevitable and usually at the very least you will do a reaseal and rebearing

Ask Your Own Medium and Heavy Trucks Question
Customer reply replied 2 years ago
I dont believe the coolant was in the system for very long. We're on a budget, where can i find the clutch and bearing part numbers for this machine? Caterpillar doesn't give a break down of the transmission.
Technician: Daniel Wilson,
 replied 2 years ago

Whats your serial number? There should be a breakdown available

Ask Your Own Medium and Heavy Trucks Question
Customer reply replied 2 years ago
3RN04820 TH83
Technician: Daniel Wilson,
 replied 2 years ago

Unfortunately with the burnt oil and the symptoms you are having it means the transmission needs to be replaced or rebuilt. Remove the filter and cut it open using a filter cutting tool so you do not contaminate the sample with cutting filings and inspect a sample of the filter for metal and friction material which confirms the transmission failure. the burnt oil and the slipping is confirmation but inspecting the filter is also further confirmation. Let me know

Ask Your Own Medium and Heavy Trucks Question
Technician: Daniel Wilson,
 replied 2 years ago

If confirmed you may be able to save some money by purchasing used from a salvage. They can put this on a locator for you.

Ask Your Own Medium and Heavy Trucks Question
Customer reply replied 2 years ago
Okay I'm heading to cut the filter as we speak. I figure at the very least the torque converter will need to be replaced. I have that part number for the torque converter from cat. I also have an assembly/disassembly manual for the transmission. Unfortunately it does not have a parts break down. Neither does my local cat dealership. If you could help me find the part #'s for internal parts of the transmission that would be great. I would like to take it apart and inspect it, but do not want to do so with having no part numbers. Thanks
Technician: Daniel Wilson,
 replied 2 years ago

If you find aluminum it will be converter and also likely charge pump

Ask Your Own Medium and Heavy Trucks Question
Technician: Daniel Wilson,
 replied 2 years ago

If there is friction material then you will be looking at clutches too

Ask Your Own Medium and Heavy Trucks Question
Technician: Daniel Wilson,
 replied 2 years ago

Click on this link. you can do a short subscription here to access the parts pages you need if the dealer will not help

Parts

Ask Your Own Medium and Heavy Trucks Question
Technician: Daniel Wilson,
 replied 2 years ago

Hi, Did you get this resolved?

Ask Your Own Medium and Heavy Trucks Question
Was this answer helpful?

How JustAnswer works

step-image
Describe your issueThe assistant will guide you
step-image
Chat 1:1 with a technicianLicensed Experts are available 24/7
step-image
100% satisfaction guaranteeGet all the answers you need
Ask Daniel Wilson Your Own Question
Daniel Wilson
Daniel Wilson
Daniel Wilson
Category: Medium and Heavy Trucks
Satisfied Customers: 6,770
6,770 Satisfied Customers
Experience: Owner at DJ Wilson

Daniel Wilson is online now

A new question is answered every 9 seconds

How JustAnswer works:

  • Ask an ExpertExperts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.
  • Get a Professional AnswerVia email, text message, or notification as you wait on our site. Ask follow up questions if you need to.
  • 100% Satisfaction GuaranteeRate the answer you receive.

JustAnswer in the News:

Ask-a-doc Web sites: If you've got a quick question, you can try to get an answer from sites that say they have various specialists on hand to give quick answers... Justanswer.com.
JustAnswer.com...has seen a spike since October in legal questions from readers about layoffs, unemployment and severance.
Web sites like justanswer.com/legal
...leave nothing to chance.
Traffic on JustAnswer rose 14 percent...and had nearly 400,000 page views in 30 days...inquiries related to stress, high blood pressure, drinking and heart pain jumped 33 percent.
Tory Johnson, GMA Workplace Contributor, discusses work-from-home jobs, such as JustAnswer in which verified Experts answer people’s questions.
I will tell you that...the things you have to go through to be an Expert are quite rigorous.

What Customers are Saying:

Wonderful service, prompt, efficient, and accurate. Couldn't have asked for more. I cannot thank you enough for your help.

Mary C.Freshfield, Liverpool, UK

This expert is wonderful. They truly know what they are talking about, and they actually care about you. They really helped put my nerves at ease. Thank you so much!!!!

AlexLos Angeles, CA

Thank you for all your help. It is nice to know that this service is here for people like myself, who need answers fast and are not sure who to consult.

GPHesperia, CA

I couldn't be more satisfied! This is the site I will always come to when I need a second opinion.

JustinKernersville, NC

Just let me say that this encounter has been entirely professional and most helpful. I liked that I could ask additional questions and get answered in a very short turn around.

EstherWoodstock, NY

Thank you so much for taking your time and knowledge to support my concerns. Not only did you answer my questions, you even took it a step further with replying with more pertinent information I needed to know.

RobinElkton, Maryland

He answered my question promptly and gave me accurate, detailed information. If all of your experts are half as good, you have a great thing going here.

DianeDallas, TX

< Previous | Next >

Meet the Experts:

Daniel Wilson

Daniel Wilson

6,770 satisfied customers

Owner at DJ Wilson

Cat Man

Cat Man

Cat Engine Expert

4,493 satisfied customers

I am ASE Master Truck Certified.

Wayne

Wayne

Journeyman

2,868 satisfied customers

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

Jeremy

Jeremy

Certified Truck/Bus Technician

2,235 satisfied customers

ASE Med/HD Truck Technician, NATEF Diesel Engines and Electrical/Electronics Technician, EPA 608/609 HVAC Certified, Steering/Suspension and ABS/Brakes Technician

cumminsdr

cumminsdr

Mechanic

1,337 satisfied customers

All types of Cummins applications

Curtis B.

Curtis B.

Technician

960 satisfied customers

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

dieseldan55

dieseldan55

Contractor

74 satisfied customers

Road Service mechanic for Volvo Construction.

< Previous | Next >

Related Medium and Heavy Trucks Questions
On my cat 272D, the work tool control that locks buckets
on my cat 272D , the work tool control that locks buckets etc. into place has stopped working, I checked all fuses inside the cab , and the switch itself, still cannot diagnosr … read more
catmastertech
catmastertech
Field service technician
Vocational, Technical or Trade Scho
1,287 satisfied customers
I have a Perkins 4cyl that has cracks in the head some go to
I have a Perkins 4cyl that has cracks in the head some go to the glow plug holes and across the intake seat are these cosmetic or do you think this head is junk?… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
4,493 satisfied customers
CumminsDr i have a 2008 peterbilt with cuimmins isxESN
Customeri have a 2008 peterbilt with cuimmins isxESN 79284576.. ecm went in to bootrom mode. had to get a new ecm and programmed by some ECM people, not cummins dealer..... they told me since ecm went… read more
cumminsdr
cumminsdr
Mechanic
High School or GED
1,337 satisfied customers
My 2001 Hino 2620 ran out of gas. How do I get it restarted?
My 2001 Hino 2620 ran out of gas. How do I get it restarted? … read more
Wayne
Wayne
Journeyman
Vocational, Technical or Trade Scho
2,868 satisfied customers
My Yale GLC025UAS071P just completely lost steering. Wheel
Hello, My Yale GLC025UAS071P just completely lost steering. Wheel just spins. Any clue? Thanks … read more
Curtis B.
Curtis B.
Technician
Associate Degree
960 satisfied customers
I have a 3406e cat engine with overhead cam Looking for
I have a 3406e cat engine with overhead camLooking for torque specs on main bearings Rod bearings Head Valves Jake brakes Oil panI'm doing a rebuild just want to make Sure I tighten to spec… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
4,493 satisfied customers
I got a 2008 isx 15 with a 2387. This morning i pulled
I got a 2008 isx 15 with a 2387. This morning i pulled actuator and checked it along with turbo. Both moved freely. I reinstalled and calibrated with insite, all tests passed. I forgot to mention i al… read more
Andy3221
Andy3221
truck /coach technician
Vocational, Technical or Trade Scho
222 satisfied customers
NEED TO REPLACE AIR COMPRESSOR ON A ISM370, NEED TO KNOW IF
NEED TO REPLACE AIR COMPRESSOR ON A ISM370, NEED TO KNOW IF THERE IS ANY TIMING THAT NEEDS TO BE DONE BEFORE REMOVING OLD COMPRESSOR AND INSTALLING NEW ONE … read more
Daniel Wilson
Daniel Wilson
6,770 satisfied customers
I have a allison mt 643 behind a 3208 cat engine. in gears 1
i have a allison mt 643 behind a 3208 cat engine. in gears 1 and 2 it will not upshift until engine rpms are at 2750 if i am on much of an incline it wont maqke the shiftuntil the road levels out. thi… read more
Curtis B.
Curtis B.
Technician
Associate Degree
960 satisfied customers
Cannot get starter off, 1925 model serial unknow, got two
cannot get starter off JA: What is the complete model and serial number of your machine? Customer: 1925 model serial unknow JA: Are you fixing this yourself? What have you tried so far? Customer: got … read more
Curtis B.
Curtis B.
Technician
Associate Degree
960 satisfied customers
87. Mitsubishi fork lift. Engine G463. What is the tork
87. Mitsubishi fork lift. Engine G463. What is the tork expec. On the cylinder head? … read more
Curtis B.
Curtis B.
Technician
Associate Degree
960 satisfied customers
The turbo boost gage on the dash is not registering. I have
the turbo boost gage on the dash is not registering . I have just had the radiator replaced and the air conditioner serviced . where do you think the best place to trouble shoot would be , the turboch… read more
FIX-IT
FIX-IT
Comercial transport technician
Vocational, Technical or Trade Scho
784 satisfied customers
Have ts100 ,won't start, no power from ignition to starter
Have ts100 ,won't start , no power from ignition to starter solenoid … read more
Curtis B.
Curtis B.
Technician
Associate Degree
960 satisfied customers
I have a ISX 15,just got it and need pass code to get into
I have a ISX 15,just got it and need pass code to get into ECM,how so do this? … read more
roy
roy
Associate Degree
3 satisfied customers
07 ram 4500 w/ 6.7 Cummins. A/C works intermittently while
07 ram 4500 w/ 6.7 Cummins. A/C works intermittently while driving and never at a stand still due to compressor clutch not engaging. clutch has good ground and no power and reads 3.5 ohms across it. s… read more
roy
roy
Associate Degree
3 satisfied customers
Why would my 3406B cat engine with a retarder be leaking oil
why would my 3406B cat engine with a retarder be leaking oil around the starter … read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
4,493 satisfied customers
I have a 2005 international 4300 with a dt 466 and it died
I have a 2005 international 4300 with a dt 466 and it died yesterday. The active codes were 534 fmi 4 sid 221 (Idm relay voltage low) and 525 fmi 6 sid 254 (injector driver circuit fault *m*. I checke… read more
Andy3221
Andy3221
truck /coach technician
Vocational, Technical or Trade Scho
222 satisfied customers
I have a CAT 309 in Vanuatu that I will have to operate in
I have a CAT 309 B in Vanuatu that I will have to operate in August. I want to get practice before I go but the local contractor uses John Deere controls. Where is the switching lever on the Cat to re… read more
catmastertech
catmastertech
Field service technician
Vocational, Technical or Trade Scho
1,287 satisfied customers
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.

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.

Show MoreShow Less

Ask Your Question

x