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HomeUpgrade & Repair KitsRepair & Service KitsMaintenance120-9989: Check Valve Seal Kit
HomeUpgrade & Repair KitsRepair & Service KitsMaintenance120-9989: Check Valve Seal Kit
Parts included in this kit

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133-8577: SEAL
133-8577: SEALQuantity: 1
120-7345: SEAL O RING
120-7345: SEAL O RINGQuantity: 1
095-1733: 5.7 x 209.3mm 90A NBR O-Ring
095-1733: 5.7 x 209.3mm 90A NBR O-RingQuantity: 1
3Q-7653: SEAL
3Q-7653: SEALQuantity: 1
3Q-7882: SEAL
3Q-7882: SEALQuantity: 2
3Q-7851: WIPER
3Q-7851: WIPERQuantity: 1
4D-9986: 23.47mm Inner Diameter O-Ring Seal
4D-9986: 23.47mm Inner Diameter O-Ring SealQuantity: 1
3J-7354: 1.83 x 8.92mm 90A NBR O-Ring
3J-7354: 1.83 x 8.92mm 90A NBR O-RingQuantity: 1
142-5943: SEAL
142-5943: SEALQuantity: 1
120-9975: O RING
120-9975: O RINGQuantity: 2
3E-6713: 19.2mm Inner Diameter Hammer Cylinder O Ring Seal
3E-6713: 19.2mm Inner Diameter Hammer Cylinder O Ring SealQuantity: 1
3E-6712: 179mm Inner Diameter O Ring Seal
3E-6712: 179mm Inner Diameter O Ring SealQuantity: 1
3E-6726: O-Ring
3E-6726: O-RingQuantity: 1
3E-6718: 3 x 24.2mm 90A NBR O-Ring
3E-6718: 3 x 24.2mm 90A NBR O-RingQuantity: 1
3Q-7652: WIPER
3Q-7652: WIPERQuantity: 1
3Q-7853: SEAL
3Q-7853: SEALQuantity: 1
3Q-7749: Purge Screw Seal
3Q-7749: Purge Screw SealQuantity: 1
3Q-7787: SEAL
3Q-7787: SEALQuantity: 1
3Q-7780: 54.2mm Inner Diameter O Ring Seal
3Q-7780: 54.2mm Inner Diameter O Ring SealQuantity: 1
153-1109: Control Valve Body Cover Seal
153-1109: Control Valve Body Cover SealQuantity: 6
133-8606: 126mm Inner Diameter U Cup Seal
133-8606: 126mm Inner Diameter U Cup SealQuantity: 1
120-9973: SEAL
120-9973: SEALQuantity: 1
095-1692: 5.7 x 229.3mm 75A NBR O-Ring
095-1692: 5.7 x 229.3mm 75A NBR O-RingQuantity: 2
3Q-7779: Hydraulic Guide Seal
3Q-7779: Hydraulic Guide SealQuantity: 1
3Q-7861: 114.3mm Inner Diameter Backup O Ring Seal
3Q-7861: 114.3mm Inner Diameter Backup O Ring SealQuantity: 1
3E-6725: 44.2mm Inner Diameter O Ring Seal
3E-6725: 44.2mm Inner Diameter O Ring SealQuantity: 1
3E-6739: O-Ring
3E-6739: O-RingQuantity: 6
3E-6702: 104.5mm ID Seal-O-Ring
3E-6702: 104.5mm ID Seal-O-RingQuantity: 2
3E-6729: O RING
3E-6729: O RINGQuantity: 1
3K-0360: 2.21 x 16.36mm 90A NBR O-Ring
3K-0360: 2.21 x 16.36mm 90A NBR O-RingQuantity: 1
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DescriptionSpecificationsCompatible Models
Description for part number 120-9989

A Check Valve Seal Kit helps regulate the pressure within the hydraulic system. It ensures that the relief valve operates effectively, opening when the pressure exceeds the set limit and closing when the pressure returns to the desired range. This prevents excessive pressure build-up that could damage system components.Attributes: • Prevents leakage.• Maintaining the desired pressure levels.Applications:The Check Valve Seal Kit plays an important role in preventing fluid leakage around the Relief valve.

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Warning:This product can expose you to chemicals including Lead and lead compounds, which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.
Specifications for part number 120-9989

We are still working on adding a specification for this part.

Compatible Models for part number 120-9989

HAMMER

130

EXCAVATOR

330-A 322N 320B N 325 LN 322-A LN 322B L 330 L 320N 320-A L 322 LN 325D L 320-A S 320C 320-A N 324D 322C 324D LN 320-A 330 LN 325-A 323D L 320 L 322 L 325 L 330D LN 324D L 330C L 330D L 322-A L 322-A N 325C 325D M320

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KeyKey
Factory Fit

This part is designed to fit your Cat equipment based on the manufacturer’s specifications.

Any changes to the manufacturer’s configuration might result in the product not fitting your Cat equipment. Please consult your Cat Dealer before purchasing to ensure that this part is appropriate for your Cat equipment in its current condition and assumed configuration. This indicator cannot guarantee compatibility for all parts.

Remanufactured

Non-Returnable

Kit

Replaced

Remanufactured

Non-Returnable

Kit

Replaced