Mack Technician

Start by Installing an In-line sight glass and pressure gauge at fuel line coming into pump. I Built a little 12" jumper to link into line. Watch for air bubbles and then monitor fuel pressure during running under load. The line Gregball is talking about is a troublemaker. It goes to the elbow of the injection pump fuel-out via a little nipple. That motor likely has a restricted orifice to set fuel pressure, no overflow/ball/seat set-up. Any air leaks in a line are a syphon back issue. The little line should not affect the running though, you may have a couple issues.

Mack engine........lack of engine brake = lack of oil flow. Is jake spitting/sputtering weak at 1,200 to 1,000?

Nasty. I want to beat it with a club so it can't harm my children.

What technique was used to draw the pin out? They have to go full allahu akbar on it or was it easy money?

Sharia law is a quick fix, the Muslim faith isn't. Since sharia is a political system, and not a defined religion, you can mandate that it be denounced by an immigrant and the organizing made illegal because of it's unethical, inhumane, often illegal, mandates. Do a google on how many sharia courts are currently active in England. They chose not to nip it in the bud. Liberalism is the driving force behind the mistake.

My wife never says stuff like that....Lucky Man 41! It's more like "STOP, BABY GARAGE SALE"..... "TAKE ME TO THE LIBRARY"....... "WHY DO YOU EVEN DRINK, BEER IS A WASTE OF MONEY, IT HAS NO NUTRITIONAL VALUE!!!".....

I spend 1/4 of my work hours between the turbo outlet pipe and the exhaust tip.

Cornwell made slide hammer bits that mated to vise grip rear. It's been my friends in a lot of fights. You just need to get a hook of any kind into your victim and hammer away.

When I hit a wall with service departments the next call is to reman center for suggested repairs. My John Deere dealer is especially good about that, don't know about Mack. Reman always get's it out and it's probably not as surgical as you'd imagine. I've seen some burnt, blue metal, butchery come back with reman paint over it. If you can't get a magnetic press into the space find a guy with a good cool hand. Once got a T2180 from reman with a 3"-4" crack in the dry bell. Looked like cast flaw. They had it epoxied and painted.

Good motor with perfect HP range for a 12liter engine. Dealing with this on the CV713. Previous owner put wrong drive axle camber spacer under right side Z-member of air ride (AL). Leans above the suspension. Imagine yours is a camel (RD chassis)?

No keeping secrets bro....we are about to buy another L180H next month? Hoping they would produce a spectrum test someday.

Most breaks i've seen have started with a broken valve spring that releases the keepers. I experienced it ......Slap slap slap slap bang. Once had a valve spring break, release the keepers, snap the head off stem, drive head sideways splitting piston and cracking head dumping entire cooling system into engine. 302 Ford.

This cannot be a mistake..... has to be prophetic and prospective? Packers takes the ring this season and that sucker sells like.... HOT CAKES!!!

Mack never built for inter-OEM space diversity in the CH. Even the CL created some stuffing issues(ex: pulling range shift cylinder on back of 18 spd with a ISX). 1999 was a nice vintage for E-tech, IMO, I'd hold on tight. Send pics if you do get it in!

I've been having a fuel dilution issue on an engine. Liehberr Dealership Tech came up for a warranty diagnostic and high pressure fuel pump replacement. Guy was dabbing oil on white paper to find the "fuel halo". I grabbed an oil drop from a known good engine oil sample kit......same paper........no halo. I figure by the sample curve this drop has about 5%-7% dilution. Takes about 15 seconds to appear.

Have you left 15PSI on it for a good sit-n-wait? No gray paint burn offs, no pink crust anywhere? Engine fans are great for diffusing coolant drops, forward facing side of any filter missing it's cheap paint job?

Bought a tub of rodent bait pellets the other day. At the bottom of the warnings there is a list of seven varieties of mice and rats that you can't legally kill in California.............. Really????

You should have had a white, monkey funk, slime festival inside your motor particularity under valve covers, in breather tube and coalescing mesh. That's a lot of coolant. Grab an oil sample and send it in to be sure the moisture drops are coolant and not natural aspiration moisture. If you saw nothing in motor I would starting hunting for other outlets. There are a couple worm clamps on an AC motor you can't see or tighten. You have to dig to get on them. Egr cooler? FJH has a good point about maintaining psi during an internal insection. Sounds like you know your machine ( bearing roll). Good luck and good returns!!!

Include Wisconsin in that salt free truck fist fight. politics and common sense would make strange bed fellows.

The long awaited exhaust quote for upgraded 5" has arrived from Rock!!!!!!!!!!! The custom Grand Rock, CV713, single run, exhaust part numbers are as follows: MK-41112M2-5, 5" 2-BEND W/BELL FLARE & PYRO; ALZ (front pipe) MK-5110A-5, 5" 4-BEND W/LIST & WELDS OD/OD; ALZ (rear pipe) My Mack Dealership prices, w/mark-up, are as follows: $206.99 front pipe $221.03 rear pipe Despite a couple requests they did not send a part number for the 5"-in/5"-out stack muffler so I'm going to go after that manually. No pre-cut 5" flex pipe included, so we will be cutting from bulk. We could use the listed dimensions from the Rock's standard 4", but I'm more comfortable cutting it ourselves since my remounts may adjust that length dimension. We are pleasantly surprised at the very reasonable price. When the parts get here I will attach pics.

We advanced all our mechanicals 2 degrees over spec to clean up the cold run and assist starting ( Wisconsin). No bad returns.

Mechanics are telling me they are virtually unserviceable, referring to internal repairs or on-site overhaul.

We also worked to get rid of all non-Armoloy pins whenever we invaded a valve cover. Trained up to flip and check. I recall them having a frosted, non-reflective silver coat. It's easy to flap jaw when I'm not the one working on your engine, but our group never condemned a single head for a break off.

I am getting together with the owner to do an audio file interview I will upload. If I had a dyno we would hit you with numbers, but we only have interpretation. Sounds like a fine idea. It would be a minimal cut. I've never seen a camshaft under cut on a Mack, but I wouldn't hesitate to try it on someone else's truck. Barry Cam Service in Minnesota built a customer roller cam for the engine in my Cougar, so I'd try them first. Mack doesn't like folks cutting engine metal, predictably. My dealership was told not to install any crankshaft that was cut outside of Mack reman. Any squareness at a journal transition ends was expected to break. Considering the torque they drive out of a 12 liter crank I'd consider it good advice.

They wouldn't have seen a fractured pin, you can't diagnose it particularly since it broke sub-deck. The bridge would have been set uneven causing the break after last adjustment. Metal, like a leaf spring, will bend indefinitely and without a predicted service life till ~pop~. A well adjusted bridge won't side load a centering pin. Center pins typically die as the result of outside influence. Good Luck EZ rider.