Issue link: https://read.dmtmag.com/i/47076
6 10 6 7 8 9 Install the new filter and seal onto the nipple at the base, then gently force it downward to make sure it's fully seated. Lube both new O-rings with a sealer, and then install them into their grooves on the cap and the plastic housing. Install the plastic housing with the attaching nut onto the filter base until the housing seats. Then carefully turn the plastic nut until the threads are straight and engage so that it rotates easily. Turn it by hand until it starts to get tight, and complete tightening with the wrench. Tighten it only till snug. Fill the unit to the black ring near the bottom only with fil- tered fuel. 7 11 10 ary filter. Install a filter wrench over the filter in the proper direction for turning it counterclockwise, and use the wrench to turn it until loose. Once the filter can be turned by hand, remove it and then pour remaining fuel into the drain pan. 11 9 Make sure the spring that forces the filter downward is in place in the bottom of the plastic cap. Then install the cap, turning it gently till it's straight, the threads catch and it can be turned easily. When it starts to get tight, engage the cap with the semi-circular portion of the special wrench near the handle, and use the wrench to turn it until snug. Now place your drain pan under the spin-on second- 14 12 lubricant. Fill the secondary filter with filtered fuel. Pour the fuel through the outside holes only, if you can, to ensure all fuel will be filtered again before it reaches the injectors. 13 14 Note the instructions on the side of the filter regarding how far to tighten it, normally about one turn. Care- fully put the filter straight under the attaching nipple on the 15 continued on page 60 BIG RIG BASICS TIP DEHYDRATE THE FUEL SYSTEM BOB MADDOX IS THE OWNER OF NICK AND DEE'S TRUCKING, a Cummins-powered 13-tractor fleet in Hereford, Texas. "Water freezes at 32 degrees," Maddox says, "while diesel fuel won't normally gel until it's below 20 degrees." His suggestion is to drain water regularly from your filters to prevent not only injection system damage but freeze-ups in the winter. "Many drivers think they have gelled fuel when a filter clogs, even though the problem may just be water," he adds. He's found you get a slush that increases restriction and clogs the filter. Drain the filter at night, he says, after a day's run, when modern electronic engines will have heated the fuel in the tank to a warm temperature. Shut the engine off and then turn the key back on if you have an electric priming pump, as do most late model trucks. Then open the drain on the filter and let it drain until you get pure fuel. You should also drain water from your fuel tanks periodically. He also recommends using some sort of restriction gauge to tell you when your filters are clogged. He uses Cummins' Road Relay, which sets a code that indicates the filters are clogged, telling him it's time to change. This prevents you from wasting filters. DECEMBER 2011 TRUCKERS NEWS 23 Make sure the gasket has been removed with the filter. Wipe the filter mounting base with a clean rag. Lubricate the filter O-ring with the silicone O-ring