to follow all of the common rebuild procedures when rebuilding the pump: proper clearances, alignments, and so on.
Don’t forget to install all the
ground wires to the transmission case, and make sure they’re clean a tight. Faulty grounds can redirect current through the transmission and burn out transmission bushings and bearings, including the pump bushing. Make sure your converter remanu-
facturer checks the hub runout. This may seem obvious, but not everyone does.
Next, take a look at the converter
pilot (figure 2). It’s a tight fit with the crankshaft so make sure it doesn’t have any paint on it, and the journal is smooth and free of any burrs or nicks. Same thing with the crankshaft; make sure it’s clean and free of any corrosion or gunk that can bind the pilot. Take some extra time to slide the
converter up to the flexplate and make sure the pilot fits smoothly into the crankshaft. And when you bolt up the converter to the flexplate during instal-
lation, make sure you pull the converter all the way toward the crankshaft, and tighten the converter bolts gradually as you turn the con- verter. This is to make sure the converter pilot doesn’t bind as you tighten the bolts.
Those are
the major items that’ll help prevent this problem, but there’s one more: Mercedes updated the pump to use a bearing in place of the bushing (figure 3). It’s a nice update and will give you a bit more insurance against pump failure. We recommend you replace the old style pump with the new one on every 722.9 you rebuild. The Mercedes part number for the
updated pump is 722-270-01-97. But before you order the factory pump,
Figure 3
check with your local parts distributor; aftermarket distributors are always add- ing parts to their lines as they become available, particularly those in high demand. The 722.9 has been out for a while
and we’re seeing more of these come to shops for repairs. And with a little extra attention, you can keep these breaks from breaking you.
MACHINE IS THE SUM OF ITS
A PARTS. Ever wonder what makes a Power Stroke® Diesel engine so dependable?
It’s the combined effort of high-quality components that are specially designed to work with each other to ensure long engine life and achieve impressive results.
Don’t mess with that. Demand OE parts. Using OE-recommended parts for repair makes sense. They t right the rst time, help reduce vehicle downtime, and are the only parts that come recommended by Ford Motor Company. With a nationwide warranty* that is backed by more than 3,000 Ford and Lincoln Dealerships, go with what got you here.
*See dealer for limited-warranty details. Visit your local Ford Dealer or
FordParts.com to purchase and see
PowerStrokeDiesel.com for additional product information. GENUINE POWER. GENUINE PERFORMANCE. GENUINE PARTS. GEARS August 2012
FCSD00018_2437112_MAG_R03.indd 1 3/14/12 1:04 PM 29
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