Rebuilding a Pump (in Under 30 Seconds)

Our trucks and skids often get the majority of our limelight, but our in-house repair team is a key part of our TPL powerhouse. Working with a variety of oil pumps, meters, and reels, this team often has the tedious (but rewarding) job of diagnosing, repairing, and reassembling equipment for almost every customer in our roster. And while we cannot guarantee your pump will be fixed quite this quick – our team is known for their industry-leading turnaround times. Check out the full step-by-step write up of our pump reassembly and testing timelapse below. [A special thanks to Gene for starring in our video!]

PREP:
Prepare the pump by cleaning it thoroughly, then drying the pump and any additional parts with an air source. Collect the below before you begin:

• Upper piston
• Body seals (part #393530-22 and -23)
• Repair kit (part #353930)

A – 2 3/4″ x 3″
B – “Mickey Mouse” #1
C – 3/8″ x 1/2″
D – 2 5/8″ x 3″
E – 3″ x 3 13/16″
F – “Mickey Mouse” #2

PUMP REASSEMBLY:

1. Grease and place the seals into the body of the pump (Note: the lips should be facing UP)
2. Add the metal spacer and washer
3. Grab the rod and apply a small amount of grease on the chamfer
4. Tap the rod halfway into the bottom of the pump body
5. Flip the pump over and place it into the vise
6. Grab the upper piston screw washer and O-ring
7. Put the screw with the washer into the top of the piston, sliding the O-ring onto the screen from the bottom
8. Apply blue thread locker to the screw and snug the piston onto the rod (Note: make sure not to pinch the O-ring between the piston and the rod itself)
9. Grab the lower cap and body O-rings, and one of the “mickey mouse” o-rings and grease it so it stays in place
10. Put the upper piston O-ring on and grease
11. Put the spool valve into the cylinder
12. Apply a heavy amount of grease to the inside of the cylinder and put it into the upper piston (making sure not to pinch any of the three O-rings!)
13. After getting the cylinder in, add the 2nd “mickey mouse” O-ring onto the top cap along with the top cylinder O-ring
14. Apply grease to both and to the inlay (so they don’t fall down)
15. Add the muffler cover, along with the top cap, and inserts the long bolts (make sure the keeps are at the bottom)
16. Add nuts and tighten
17. Flip the entire assembly sideway in the vise, and get the tube started on the lower piston (if it’s tight, add oil to the lower piston and inside the tube)
18. Once on the lower piston, push the tube into the body of the pump (be careful not to strip the threads of the aluminum body)
19. Make sure the threads are lined up and screw the tube in (again, be careful not to pinch the two O-rings on the tube)
20. Once past the O-rings, snug the tube into the body
21. Air test the pump without any product to ensure the pump is at least cycling
    

TESTING:

1. Bring the entire pump assembly to a test bench/oil tank
2. Screw the pump on, hook the air line (80 PSI) up to the pump, and oil line up to the oil outlet
3. Turn the air on until the pump primes and begins to push oil through
4. Check if it stalls out or does not blow air
5. If every thing works properly, remove hoses and unscrew the pump from the test bench
6. Drain test oil, and put plugs in the oil inlet and outlet
7. Pump is now ready to go!

Don’t feel like doing all that yourself? Our in-house repair team is available to help diagnose and repair your oil and grease pumps for you. Submit a quote request, or call us directly and ask to speak with a member of our Repair team!