Valve check - Track Greaser suitable for the tensioner in JCB 801 / 802
GX-AFTER

Valve check - Track Greaser suitable for the tensioner in JCB 801 / 802

Catalog number:331/46320 Nr OEM:331/46320 Manufacturer:GX-AFTER
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Track Tensioner Grease Valve suitable for JCB / CAT - 331/46320

Technical Specification and Compatibility

A high-quality 331/46320 track tensioner grease valve (nipple) by GX-AFTER. This is a specialized check valve that screws into the track adjuster cylinder, allowing high-pressure grease to be pumped in to tension the track. It fits a wide range of machines: from JCB mini excavators (801x series) to the heaviest Caterpillar dozers (D11) and tracked excavators.

Part Number: 331/46320
Type: Track Adjuster Valve / Grease Nipple
Location: Undercarriage (Track Tensioner Cylinder)
Function: Tensioning and releasing the track

GX-AFTER is the smart choice for your machine. We provide high-class replacements that combine excellent quality with an attractive price. Each part is carefully verified to ensure full compatibility and reliability you can depend on.

Features of the 331/46320 Valve

High Pressure Resistance: Designed to hold the immense grease pressure inside the cylinder required to tension heavy tracks.
Integrated Check Valve: Internal ball mechanism prevents grease backflow, maintaining constant track tension.
Corrosion Resistance: Protective coating shields the valve from water, mud, and salt, critical for undercarriage components.
Universal Fit: One of the most versatile valves, used in both small JCB machines and giant CAT equipment.

Application in machinery

Brand Machine Type Models / Series
JCB Mini Excavators 8014, 8015, 8016, 8017, 8018, 802, 8020, 8025, 8026
Caterpillar (CAT) Dozers D2, D3, D4, D5, D6, D7, D8, D9, D10, D11 (various series: C, G, K, N, R, T, XE)
Caterpillar (CAT) Tracked Excavators 307, 311, 312, 315, 317, 318, 320, 322, 330 (series B, C, N, L)

The list above is for reference. It is crucial to verify the appearance and thread of the old valve before purchasing.

Related Parts and Hardware

This valve screws into the track tensioner cylinder. To service it, you need a standard grease gun with a suitable coupler and high-quality grease.

⚠️ Safety Warning

DANGER! HIGH PRESSURE! Never fully unscrew this valve while the track is under tension. The grease inside is under tremendous pressure, and forceful ejection of the valve can cause serious injury or death. Always loosen the track slowly and carefully, following the machine's manual.

Part Role in the Machine and Failure Diagnostics

Valve 331/46320 is used to adjust track tension. Pumping grease through this valve extends the tensioner piston, tightening the track. Loosening it slightly allows grease to escape, slacking the track (e.g., for service).

  • › Track frequently loses tension (valve is leaking grease back out).
  • › Grease leak around the valve threads or through the zerk head itself.
  • › Unable to pump grease in (internal check ball is seized).
  • › Broken or damaged zerk head.

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🔧 Expert Guide: Key Installation Tips

  1. Careful Removal: Loosen the old valve very slowly, standing to the side, never directly in front of it. Wait for grease to stop oozing before unscrewing it completely.
  2. Clean Threads: Thoroughly clean the threads in the tensioner cylinder before screwing in the new valve.
  3. Do Not Overtighten: Tighten the valve with appropriate force. Overtightening can damage the threads or the valve body.
  4. Clean Before Greasing: Always wipe the zerk head clean before attaching the grease gun to avoid forcing sand into the cylinder.

Frequently Asked Questions (FAQ)

How is this different from a regular grease nipple?

A regular grease nipple is for lubricating bearings and pins. This valve (331/46320) has a reinforced design and a special check valve to withstand the immense hydraulic pressure inside the track tensioner, which would burst a standard nipple.

My track keeps losing tension. Will replacing this valve help?

If the cause of loosening is a leak through this valve (which is very common), then yes. Replacement is cheap and simple, so it's worth starting diagnostics here before replacing the entire cylinder seals.

Question mark

Do you have doubts or need confirmation to avoid costly downtime? Call us. Our experts will help you select the right part to get your equipment back to work as quickly as possible.

331/46320
331/46320
0.07 kg

Data sheet

SUITABLE FOR
JCB
MACHINE TYPE
MINIEXCAVATOR
OEM NUMBERS
331/46320

Specific References

MPN
331/46320
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Valve check - Track Greaser suitable for the tensioner in JCB 801 / 802

Catalog number: 331/46320
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Manufacturer

  • Serwis Kop Sp. z o.o. Sp. K.
  • Podkarpacka 57a
  • 35-082 Rzeszów
  • Poland
  • [email protected]
  • +48178643100

Responsible person

  • Serwis Kop Sp. z o.o. Sp. K.
  • Podkarpacka 57A
  • 35-082 Rzeszów
  • Poland
  • [email protected]
  • +48178643100
gross price

122.39 zł

net price
99,50 zł
Available in large quantity Temporarily unavailable
99,50 zł
net price

122.39 zł

gross price
Nie możesz dodać więcej produktów
  • You will receive 10 points, it gives you 4.00 zł
  • Lowest price from 30 days before the discount: 122.39 zł
    PRODUCT SPECIFICATION
    SUITABLE FOR
    JCB
    MACHINE TYPE
    MINIEXCAVATOR
    OEM NUMBERS
    331/46320

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    SERWIS KOP Sp. z o.o. Sp.k.
    ul. Podkarpacka 57A, 35-082 Rzeszów
    NIP: 813-352-97-49 REGON: 180286726

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