Compatible Machines
- GH 833 – see parts breakdown in the GH 833 manual for spring usage
- GH 933 – listed in Graco parts documentation for compressor and pump assemblies
- GH 2570 – referenced in the older parts list where spring, compression appears
Product Overview
Introducing the 120139 SPRING, COMPRESSION — a genuine OEM coil compression spring from Graco, engineered for reliable force and return action in hydraulic and fluid-handling assemblies. This part is specified for critical installation points in several Graco machine models.
Key Features & Benefits
| Feature | Benefit |
| OEM-specified spring rate | Ensures correct preload and consistent return force in the assembly. |
| High-grade material construction | Durable against fatigue and suited for repeated cycles under pressure. |
| Exact fit for listed machines | Reduces downtime and ensures proper performance when servicing these Graco models. |
Suggested Use & Installation Tips
- Use this spring when performing repair or rebuild of hydraulic motors, pump assemblies or fluid control modules on the compatible machines listed above.
- Before installation, clean the surrounding components and ensure surfaces are free of debris or damage to maintain correct spring function.
- Check the service manual for your machine to confirm torque and assembly sequence — incorrect installation may lead to premature wear.
- Inspect the old spring: if coils are distorted, length has reduced, or visible wear is present — replacement is recommended to keep system reliability high.
Frequently Asked Questions
The spring is referenced in service/parts manuals for the GH 833, GH 933, and GH 2570 series machines. Always verify your machine’s model and serial number before ordering.
While a generic spring might physically fit, the OEM spring ensures correct spring rate, material compatibility and fits precisely in the assembly where Graco specifies this part — for critical hydraulic systems it’s best to use the genuine part.
After installation, verify the spring sits correctly in its seat, check for smooth movement or any binding, monitor the machine under operation for proper function, and inspect again after initial use. Any looseness or abnormal behaviour may indicate incorrect installation or incorrect part.
If your machine model is not listed above, please consult your OEM parts manual or contact your authorised distributor to confirm compatibility.
