Home » Samson PM3 55:1 HP Piston/Cylinder & Check Valve Kit (GK-5) #740954
Samson DP200 Pump Repair Kit - Directional Valve #558525, AlamoEquipment.com
Samson DP200 Pump Repair Kit - Directional Valve #558525, AlamoEquipment.com

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Samson

Samson PM3 55:1 HP Piston/Cylinder & Check Valve Kit (GK-5) #740954

SKU: ALMSAM740954
(0)
$61.58
-31% $89.25 $61.58
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Quick Specs
Part number 740954
Manufacturer Samson Corporation
Kit GK-5 — Pressure Check Valve + High-Pressure Cylinder and Piston Kit
Fits Samson PumpMaster 3 (PM3) 55:1 air-operated grease pump
Kit contents Pressure check valve, high-pressure cylinder and piston — positions 25–34 of the manual's parts numbering
Named parts Grease valve ball (28), high-pressure piston (29), high-pressure cylinder (33)
Service note The high-pressure piston and cylinder must always be replaced at the same time
Type Samson factory repair kit (listed in service manual 840803)
Reference manual Samson 840803

Samson PM3 55:1 HP Piston/Cylinder & Check Valve Kit (GK-5) (#740954)

The Samson PM3 55:1 HP Piston/Cylinder & Check Valve Kit (GK-5) (#740954) is the high-pressure repair kit Samson lists for the PumpMaster 3 55:1 air-operated grease pump — the pressure check valve, high-pressure cylinder, and piston (positions 25–34). The manual's troubleshooting table lists the high-pressure cylinder or piston among the causes of grease pressure loss, and it notes that the piston and cylinder must always be replaced at the same time.

Compatibility & Fitment

  • Kit GK-5 in the Samson repair kits table (service manual 840803) for the PumpMaster 3 55:1 grease pump.
  • The manual's pressure check valve / high-pressure cylinder and piston procedure is tagged with this kit.

Frequently Asked Questions

When is this the right kit?

Samson's troubleshooting table lists the high-pressure cylinder (33) or piston among the causes of grease pressure loss on the PM3 55:1. The manual's procedure covers the pressure check valve, the high-pressure piston, and the cylinder — the parts this kit covers.

Do the piston and cylinder really have to be replaced together?

Yes. The service manual states that the high-pressure piston and cylinder must always be replaced at the same time.

What does this kit contain?

The pressure check valve, high-pressure cylinder, and piston — positions 25–34 of the manual's parts numbering, including the grease valve ball (28), the high-pressure piston (29), and the high-pressure cylinder (33).

What is the part number?

It is Samson 740954, kit GK-5. Match it against the repair kits table for your PM3 55:1 before you order.

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