National Wildfire Coordinating Group

Pump – Trombone, Backpack, Single Action

NFES Number: 
Water Handling
Storage and Shelf Life Checks: 

Initial Inspection/Disposal Criteria

  1. Inspect for obvious damage. 
  2. Inspect for burns and cracks. Dispose of if these are found.
  3. Inspect for damaged threads. If beyond repair dispose of. Ensure tip is secured to wand with a 3-4 inch length of ball chain.
  4. Place hose in water and pump handle to validate that pump works properly.
  5. Return item to stock if it shows no sign of use or damage.
  6. Dispose of item if unable to repair.

Refurbishing Procedures

A. Cleaning

  1. Wash and clean all items of foreign matter, such as mud, dirt, and grease.
  2. Clean in mild detergent with brush or scouring pad as needed.
  3. Rinse thoroughly.

B. Repair

  1. If pump pressure is not sufficient, remove pump unit and replace O-rings.
  2. If suction hose is kinked, replace hose.
  3. Ensure quick connection on pump has proper seating.
  4. Check hose connection to pump for tightness; if loose, use a hose clamp.
  5. Replace length of ball chain between wand and removable tip if missing.
  6. Check supply hose on pump assembly for obstructions and tight connections, bent push rods, and clogged tips.
  7. Check spring and ball bearing.
  8. Lubricate slide with appropriate lubricant, e.g., Chevron NLGI2 or equivalent.

C.  Tests for Performance

  • Place end of hose in water and pump trombone. Ensure that it fills and discharges water properly without back feeding water out of the suction hose.

D.  Repackaging

  1. Suggested packaging of NFES #000151, 10 each in NFES #000385 carton (7.25” x 9.25” x 26”) or 25 each in NFES #002006 carton (23” x 19” x 10”).
  2. Ensure suction hose is not kinked when packaging.


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