Join Date: Jul 2009
Location: Siler City, NC
Thanked 576 Times in 452 Posts
i have a mechanical 3406b. my #6 line coming out of the pump is leaking. its not leaking at the line. it leaks where the thread comes out of the pump and the line screws too. on top of the pump theres some circle indentions and thats where it leaks on the # 6 outlet. hope you understand what i am talking about. is this fixeble or do i need a new pump.
That's a bushing.....it threads in the top of the pump and holds the barrel and plunger down.
NO you don't need a new pump, and YES is if fixable. It's a $5 o-ring, but the barrel and plunger is timed. Need to loosen half of the bolts on the side plate, and drain the fuel from the manifold. Also need the CAT splined socket to remove the bushing, and re-torque to 200 ft/lbs. Turn key switch on, drop the CAT timing pin in the hole, and rubber strap the throttle all the way back.
If you want to attempt it, me or someone on here can walk you through it. Not a big deal at all. When re-assembling just need to have a can of Brake Clean or Ether and make sure your hands are perfectly clean. If not, you will have fuel in the oil in a very short period of time.
2005 250 Super Duty Crew. White and Grey. ARP studs, EGR Delete, and SCT from Vivian. CCV re-route, and 4" Magnaflow turbo back.
Other trucks:1980 KW Ext hood, 1982 Kenworth Cabover Aerodyne (BJ and the Bear) 2000 and 2003 Kenworth W900's. 2003 Pete EXHD. All Caterpillar Power. My 2003 has an MBN I converted to 6NZ. Early 550 file, 211-3025 squirts. 800 cam. Acert twins via custom mount. ARP head bolts.
Transporter and Operator of a Bauer Built Championship Unlimited Tractor Pulling Sled for the United Pullers of the Carolinas, Region IV affiliate of the National Tractor Pullers Association (NTPA), and damn proud of it!!!!