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Graco B Series - User Manual

Graco B Series
20 pages
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308883
Rev. F
First choice when
quality counts.
INSTRUCTIONS–PARTS LIST
INSTRUCTIONS
This manual contains important
warnings and information.
READ AND KEEP FOR REFERENCE.
50:1 Ratio Fire-Ballr Grease Pumps
FOR LUBRICATING PRODUCTS ONLY
8400 psi (58 MPa, 580 bar) Maximum Fluid Working Pressure
140 psi (0.97 MPa, 9.7 bar) Maximum Air Working Pressure
Model No. 239877, Series B
pail length
Model No. 239887, Series B
120-pound drum length
Model No. 239888, Series B
400-pound drum length
WARNING
This product is designed to be used only in
pumping non-corrosive and non-abrasive lubricants
and greases. Any other use can cause unsafe
operating conditions and result in component
rupture, fire, or explosion, which can cause serious
injury, including fluid injection.
Table of Contents
Warnings 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Installation 6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Operation 8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Troubleshooting 9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Displacement Pump Service 10. . . . . . . . . . . . . . . . . . . .
Air Motor and Throat Service 12. . . . . . . . . . . . . . . . . . . .
Parts Drawing 16. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Parts List 17. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Dimensional Drawings 18. . . . . . . . . . . . . . . . . . . . . . . . .
Mounting Hole Layout 18. . . . . . . . . . . . . . . . . . . . . . . . . .
Technical Data 19. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Warranty 20. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Graco Phone Number 20. . . . . . . . . . . . . . . . . . . . . . . . . .
GRACO INC. P.O. BOX 1441 MINNEAPOLIS, MN 55440–1441
COPYRIGHT 1999, GRACO INC.
Graco Inc. is registered to I.S. EN ISO 9001
Model No. 239887 shown
9038B
Parts

Questions and Answers

  • R
    Richard RoweAug 19, 2025
    How to fix grease leaking from muffler plates on Graco B Series Water Pump?
    • L
      Lindsey WintersAug 19, 2025
      If grease is leaking from the muffler plates of your Graco Water Pump, it is likely due to a worn throat seal, which needs to be replaced.
  • M
    Megan HernandezAug 21, 2025
    What to do if grease is leaking from the muffler plates of my Graco Water Pump?
    • W
      William HallAug 21, 2025
      If grease is leaking from the muffler plates, it's likely due to a worn throat seal, which will need to be replaced.
  • X
    xavilaAug 23, 2025
    What to do if Graco B Series Water Pump operates, but output is low on both strokes?
    • M
      Mary Caldwell MDAug 23, 2025
      If your Graco Water Pump operates but the output is low on both strokes, it could be due to several reasons. First, check for an inadequate air supply or a restricted air line and increase the air supply and clear any restrictions. Second, ensure that the valves are open and clear of any clogs. Also, make sure that the fluid supply is not exhausted; refill it and reprime the pump. Additionally, inspect the fluid lines, hoses, and valves for any clogs and clear any obstructions. Finally, check for worn seals and replace them if necessary.
  • K
    Kevin WilkinsonAug 26, 2025
    Why my Graco B Series Water Pump fails to operate?
    • M
      Mrs. Madison JacksonAug 26, 2025
      If your Graco Water Pump fails to operate, there might be several reasons. First, ensure that the air supply pressure is adequate and that the air lines are not restricted; increase the air supply and clear any restrictions if needed. Second, check for closed or clogged valves and open or clear them. Also, inspect the fluid lines, hoses, and valves for any clogs and clear any obstructions. A damaged air motor can also cause this issue, so assess the damage and service the air motor. Finally, ensure that the fluid supply is not exhausted; refill and reprime or flush the pump.
  • H
    hansenseanAug 28, 2025
    What to do if Graco B Series operation is erratic?
    • E
      Elizabeth LewisAug 28, 2025
      If the Graco Water Pump operation is erratic, it could be due to several reasons. Ensure that the fluid supply is not exhausted; refill and reprime or flush the pump. Check for worn pump seals and replace them if necessary. Also, inspect the shovel tube for damage and replace it if needed. Finally, a damaged check seat can cause this issue, so replace the pump piston or shovel rod, or any other damaged part.
  • B
    Brian MurphyAug 30, 2025
    What to do if Graco Water Pump operates, but output is low on upstroke?
    • M
      Mark WilliamsAug 30, 2025
      If your Graco Water Pump operates, but the output is low on the upstroke, it could be due to a worn piston seal, so replace it. Alternatively, the upper check seat might be damaged, in which case you should replace the pump piston.
  • C
    Carlos SmithSep 1, 2025
    What to do if Graco Water Pump operates, but output is low on downstroke?
    • D
      Daniel WilcoxSep 1, 2025
      If your Graco Water Pump operates, but the output is low on the downstroke, it may be due to a worn fluid intake seal, so replace it. It could also be caused by a damaged lower check seat, in which case you should replace the shovel rod.
  • M
    Mark MillsSep 4, 2025
    Why is there continuous air exhaust from my Graco B Series?
    • J
      James MoodySep 4, 2025
      If there is continuous air exhaust from the Graco Water Pump, it may be caused by a worn or damaged air motor gasket or seal. Assess the wear or damage and service the air motor.
  • B
    bfloydSep 6, 2025
    Why is my Graco B Series Water Pump operating, but the output is low on both strokes?
    • L
      lopezmarcusSep 6, 2025
      Several factors can cause low output on both strokes. Check for these issues: * Inadequate air supply pressure or restricted air lines: Increase air supply and/or clear any restrictions. * Closed or clogged pump valves: Open and/or clean the valves. * Exhausted fluid supply: Refill the fluid supply and reprime the pump. * Clogged fluid line, hose, valve, or other accessory: Relieve pressure and clear any obstructions. * Worn seals: Replace the worn seals.
  • K
    Karen TurnerSep 8, 2025
    What to do if my Graco B Series Water Pump fails to operate?
    • A
      Alfred GarciaSep 9, 2025
      If your pump isn't operating, consider these potential causes and solutions: * Inadequate air supply pressure or restricted air lines: Increase the air supply and clear any restrictions. * Closed or clogged pump valves: Open and clean the valves. * Clogged fluid line, hose, valve, or other accessory: Relieve pressure and clear any obstructions. * Damaged air motor: Assess the damage and service the air motor. * Exhausted fluid supply: Refill and reprime or flush the system.

Graco B Series Specifications

General IconGeneral
BrandGraco
ModelB Series
CategoryWater Pump
LanguageEnglish

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