HK Trucking

That's what makes all these "Nanny State" regulations & laws to protect us from ourselves so pointless!

3/16 wall rectangular tubing makes kick ass sideboards, yeah it's heavier and more expensive than using boards from Home Depot, but you install them once and it's good for the life of the dump box or trailer. I used rectangle tubing on my dump boxes, because wood sideboards always get broken by reckless operators & look like hell, not to mention the fact that it's a PITA to always be replacing them. I always just went to Schoessow Steel in Briarton or DePere & bought new steel. .

I think it was 236GB244 on the ones I had, but the best thing to do is pull it apart and get the number off the element that's in there. .

That's the "Centrimax" bypass type oil filter. Yes, it needs to be changed too, Mack recommends changing it at every oil change, I used to change the spin on filters every change, and the centrimax every other oil change. You take off that rubber hose on the bottom, use a filter wrench to remove the canister (put the filter wrench at the bottom of the canister to avoid crushing or deforming it). Throw out the element, wash out the canister and place a new element in it, and a new O ring at the top of the canister and reinstall. If that rubber hose looks sh*tty, replace it with a new one. .

Yup. It's a bitch being self employed ain't it! I worked for a slave driver like that for 19 years too! .

An R685SX would have a Mack ENDT675 (237 HP) Maxidyne engine, a Mack TRXL107 or TRXL1071 6 speed transmission, a heavy front axle (18,000 or 20,000 lbs) and Mack 55,000 lb. camelback rears.

When you install your new clutch, put in a "2 piece" clutch brake. That way if the clutch brake goes bad in the future you can remove it easily and replace it with another 2 piece clutch brake without the PITA of cutting out a broken 1 piece clutch brake with a torch. .

Hi Rob. We had a jack identical to the one pictured when I worked in the shop at Van Handels (1986 - 87). It was handy for clutch jobs & trans removals as you could jack the front of the truck way up and get enough clearance to roll the transmission jack & trans out from under the truck. One thing you had to watch out for was damaged bumper brackets on the DM 600's. If the brackets were cracked or damaged they would not take the strain of lifting the whole front of the truck. (this was the old type DM bumper brackets 87 - back). With a tilt hood, you cannot open the hood while the truck is on that type of jack. .

If it's RH and LH threads then it must be the old style Budds. Dayton and Unimount are all RH thread.

Welcome to the board Chris. Now throw away that automatic! lol. .

Yup! There's the problem! Throw away that automatic and put a manual trans. in it. .

I'll bet the owner of that Camaro was not a happy camper!!!!!!!

I'm surprised I've never heard of this "Big6" before, but it sounds like something that would have given the Cat 3406, Cat C15, Cummins ISX etc. a serious run for their money, IF it had ever been released for public consumption. .

That's why Bill Clintoon liked Monica. She was big enough to have extra capacity, if you catch my drift. .

You guys are funnier than hell sometimes. lol.

There are 2 filters - a red primary and green secondary. Remove both filters, making sure that the gaskets come off along with the filters. Fill each new filter with CLEAN fuel and put a film of motor oil on the gasket before installing it. Spin each filter on until the gasket contacts the base, then tighten further until snug. Don't overtighten or you could damage the filter, and it would also make it difficult to remove next time. If your truck has a manual priming pump on the transfer pump (located on the side of the injector pump), pump the plunger now until resistance is felt when pumping, indicating that fuel is being pumped thru the filters and inj. pump. Start the engine (it may run rough or stall a few times until the air is worked out of the system). You must prefill the filters as described or it will be next to impossible to get the fuel system "primed up" again. Valve cover gasket leaks on the E7 usually happen on the right side, I think the heat from the proximity to the exhaust ports causes gasket failure eventually. If your engine has Jake brakes on it, you'll also want to replace the gaskets between the Jake spacers and the heads while you've got the valve covers off. .

The precombustion Cat engines used glow plugs, and Cummins used a setup that had a small fuel sprayer and a spark plug that actually created a small fire in the intake manifold to warm the intake air. Some of the later model Cat engines used in heavy equipment, such as the 3116 and 3126 have an electric heating element in the intake manifold to pre heat the air. .

Nice work Larry. How about using an electronic speedometer head from a later model DM or R model? .

The way you're doing it is the correct way. Just keep adding oil and letting it flow thru the bearings until it finally stabilizes at the full line on the hub window. It goes a lot quicker in hot weather. .

Apparently the mother company can't be bothered with engineering an actual solution to the problem which would satisfy the customers. .

Even if the truck has been sitting on the lot for awhile, as long as the basic specs of the truck are correct for the job, the frame can be shortened/lengthened, or drive axles moved to the proper location for correct weight distribution. Setting up a truck correctly involves more than just slapping a dump body on it, however some salespeople are either unaware of the proper parameters, or they just don't care as long as they can get their commission. Then again, a competent truck body installation shop should see a red flag when ordered to set up a truck with the drive axles incorrectly positioned. . .

If that truck was otherwise spec'ed properly, why didn't the company just relocate the drives further to the rear? Would've been better than selling an otherwise good truck at a loss. .

Mornin' Rob. I've got one in my toolbox that's similar to that IR2161XP (short shank). I just use a impact type extension on it if I need extra reach, haven't had a problem. The reason I bought the short shank model was because it will get under the Mack rear spring boxes without jacking the truck way the hell up as would be necessary with the long shank model. Our shop also has 2 similar "company owned" impact wrenches, both short shank type. . .

If the trailer gets stuck, you can hook a chain onto the earring to pull it out. .

Let it run for a while with the compound in neutral and the main in 4th or 5th, that way the gears in the back box will be turning too. Mike, you said the bellhousing is loose where? Did you mean where the bellhousing attaches to the engine block, or where the trans attaches to the bellhousing? .