Mack Technician Posted November 15, 2019 Share Posted November 15, 2019 Flashback to 2001 E-Tech casting sand dilemma. Are you guys getting casting sand issues on the MP8's? This is the third go round in two years on the Volvo side. All three lost heat, all three cured by reverse flowing the heater cores to blow engine casting sand out. Quote Link to comment Share on other sites More sharing options...
Mackpro Posted November 15, 2019 Share Posted November 15, 2019 Not yet. But I remember the days of roasted air compressors on the 2001 engines. If the paint was cooked off the head of the compressor, you knew you had a casting sand problem. We had 2 trucks in one day blow the air compressor head gasket and pump coolant back through the air intake and go right into #6 cylinder. Bent the connecting rod so bad on one truck we had to cut it out with a torch. 1 1 Quote Link to comment Share on other sites More sharing options...
Mack Technician Posted November 15, 2019 Author Share Posted November 15, 2019 (edited) They should have never removed the E-Tech coolant filter. I think it was always there, but after the filter was removed it became apparent. Looks like they still haven’t got it figured out? This is a D-13J, same as MP engine, different paint booth. Edited November 15, 2019 by Mack Technician Quote Link to comment Share on other sites More sharing options...
Mackpro Posted November 16, 2019 Share Posted November 16, 2019 I believe the coolant filter became an option around 2001. It was a less than $50 option and lots of fleets didn’t opt for it . 10 years later the counter bore in the block would be pitted so bad that it was borderline to cut and save . Quote Link to comment Share on other sites More sharing options...
h67st Posted November 16, 2019 Share Posted November 16, 2019 1 hour ago, Mackpro said: I believe the coolant filter became an option around 2001. It was a less than $50 option and lots of fleets didn’t opt for it . 10 years later the counter bore in the block would be pitted so bad that it was borderline to cut and save . Would that happen even if the owner kept up the SCA treatment? Quote Link to comment Share on other sites More sharing options...
Mack Technician Posted November 17, 2019 Author Share Posted November 17, 2019 2 hours ago, h67st said: Would that happen even if the owner kept up the SCA treatment? I blame the block worms on low SCA. The sand sure isn’t helping anything though. Quote Link to comment Share on other sites More sharing options...
Mack Technician Posted December 18, 2019 Author Share Posted December 18, 2019 Here's the cure boys. It's not the prettiest set-up for remediation of casting sand, but you have my guarantee it works. I have a unit that plugged the heater core with casting sand twice in a month. Like some big nasty pocket of it let go inside? When your heating goes south...…….change the filter. I plan on replumbing and attaching things a bit, but this is essentially where I'm at. The filter is a non-paper, steel mesh inline strainer, NAPA #3248. The heater works fine in all settings and it was -15F down in the river valley this morning. I'm going to run it for a while, see what I capture and when it seems clean put the elbow back in or permanently move the filter closer to the cab in some straight run of factory hose. 1 Quote Link to comment Share on other sites More sharing options...
Bullheaded Posted December 18, 2019 Share Posted December 18, 2019 I remember living this nightmare. My 2000 E7 460 came back on wrecker the first 5 trips I made with it, with a cooked compressor and the air lines melted off it from the sand plugging it up. Finally got that cleared up, then it dropped a valve, LOL. 1 Quote Link to comment Share on other sites More sharing options...
Mack Technician Posted January 31, 2020 Author Share Posted January 31, 2020 Found out today...…………… This isn't casting sand. Its a type of welding flux that's going free-agent into the cooling system. I'm requesting more info from Volvo, if they will send the service bulletin I'll copy it over. Quote Link to comment Share on other sites More sharing options...
david wild Posted January 31, 2020 Share Posted January 31, 2020 WOW Quote Link to comment Share on other sites More sharing options...
fjh Posted February 1, 2020 Share Posted February 1, 2020 17 hours ago, Mack Technician said: Found out today...…………… This isn't casting sand. Its a type of welding flux that's going free-agent into the cooling system. I'm requesting more info from Volvo, if they will send the service bulletin I'll copy it over. So is the engine assembly plant right next to the FAB SHOP COME ON! Give me a break! Quote Link to comment Share on other sites More sharing options...
Mack Technician Posted February 2, 2020 Author Share Posted February 2, 2020 On 2/1/2020 at 7:40 AM, fjh said: So is the engine assembly plant right next to the FAB SHOP COME ON! Give me a break! He said it’s leaching out of the interior core welds. I’m going to bug this one for more info. Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.