--- title: How to Clean Or Replace Vanes On A GPRO PRO20/PRO35 Fuel Transfer Pump description: Replace or clean the vanes on GPRO PRO20/PRO35 pumps with this 10-step walkthrough. --- [Skip to content](https://support.farmchem.com/knowledge-base/how-to-clean-or-replace-vanes-on-a-gpro-pro20/pro35#main-content) [![FarmChem Logo Supporting Hands Black](https://support.farmchem.com/hs-fs/hubfs/FarmChem%20Logo%20Supporting%20Hands%20Black.webp?width=275&height=68&name=FarmChem%20Logo%20Supporting%20Hands%20Black.webp)](https://support.farmchem.com/knowledge-base?hsLang=en) - [Shop](https://farmchem.com/) - [Blog](https://support.farmchem.com/blog) - [About Us](https://farmchem.com/about-us) - [Tender Trailer Tool](https://farmchem.com/tender-trailer-tool/) - [Knowledge Base](https://support.farmchem.com/knowledge-base) Open main navigation Close main navigation - [Shop](https://farmchem.com/) - [Blog](https://support.farmchem.com/blog) - [About Us](https://farmchem.com/about-us) - [Tender Trailer Tool](https://farmchem.com/tender-trailer-tool/) - [Knowledge Base](https://support.farmchem.com/knowledge-base) - [Contact us](https://farmchem.com/contact-us/) [Contact us](https://farmchem.com/contact-us/) How can we help you? - There are no suggestions because the search field is empty. 1. [Knowledge Base](https://support.farmchem.com/knowledge-base?hsLang=en) 2. [Helpful Videos](https://support.farmchem.com/knowledge-base/helpful-videos?hsLang=en) 3. [Repairs & Maintenance](https://support.farmchem.com/knowledge-base/helpful-videos?hsLang=en#repairs-maintenance) # How to Clean Or Replace Vanes On A GPRO PRO20/PRO35 Fuel Transfer Pump ## Here's a 10-step walkthrough on how to take out the vanes for replacement or cleaning on a PRO20/PRO35 fuel pump. Here's 10 steps to clean or replace the vanes inside your PRO20/PRO35 fuel pump. *Remember to wear properly fitting PPE when doing this task!* 1. Turn off the pump and disconnect from power 2. Use a 9/16" hex wrench to remove the cover plate 3. Use a pair of pliers to remove the vanes (part numbers 133501-1, 133502-1) from the pump cavity. 4. Use an Allen key to remove the rotor and shaft key from the pump cavity. Be sure to not drop the vanes or shaft key into the pump cavity 5. Inspect the vanes and o-ring for wear, debris and damage. Replace if needed 6. If there is debris, clean the pump cavity and all components with a clean cloth 7. To reassemble, place the rotor, shaft key, and vanes in the cavity. Make sure the flat side of the vanes are oriented clockwise within the rotor. 8. Remove the o-ring and lightly coat it with grease 9. Re-insert the o-ring securely into its grooves 10. Bolt the cover plate back onto the housing. Ensure there are no gaps between the cover plate and the pump housing --- **Offerings covered by this post:** 1. [GPI PRO20 115V Fuel Transfer Pump, 1″ Manual Nozzle, 18′ Hose & Tank Adapter Mount (20 GPM) – PRO20-115MD](https://farmchem.com/product/pro20-115v-fuel-transfer-pump-1-manual-nozzle-18-hose-tank-adapter-mount-20-gpm-pro20-115md/) 2. [GPI PRO20 115V Fuel Transfer Pump w/QM Meter (20 GPM) – PRO20-115PO/QM40G8N](https://farmchem.com/product/115v-fuel-transfer-pump-w-qm-meter-20-gpm-pro20-115po-qm40g8n/) 3. [GPI PRO20 115V Fuel Transfer Pump w/QM Meter, 18′ Hose & 1″ Auto Nozzle (20 GPM) – PRO20-115AD/QM40G8N](https://farmchem.com/product/pro20-115ad-qm40g8n/) 4. [GPI PRO20 115V Fuel Transfer Pump, 1″ Auto Nozzle, 18′ Hose & Tank Adapter Mount (20 GPM) – PRO20-115AD](https://farmchem.com/product/pro20-115v-fuel-transfer-pump-1-auto-nozzle-18-hose-tank-adapter-mount-20-gpm-pro20-115ad/) 5. [GPI 115V/230V PRO35-115AD Fuel Transfer Pump, 1″ Auto Nozzle & 18′ Hose (35 GPM) – PRO35-115AD](https://farmchem.com/product/115v-230v-pro35-115ad-fuel-transfer-pump-1-auto-nozzle-18-hose-35-gpm-pro35-115ad/) 6. [GPI 115V/230V PRO35-115 & QM40 Combo, No Nozzle (35 GPM) – PRO35-115PO/QM40G8N](https://farmchem.com/product/115v-230v-pro35-115-qm40-combo-no-nozzle-35-gpm-pro35-115po-qm40g8n/) 7. [GPI 115V/230V PRO35-115 & QM40 Combo w/1″ Automatic Nozzle (35 GPM) – PRO35-115AD/QM40G8N](https://farmchem.com/product/115v-230v-pro35-115-qm40-combo-w-1-automatic-nozzle-35-gpm-pro35-115ad-qm40g8n/) - [What is AgriPerks?](https://support.farmchem.com/knowledge-base/what-is-agriperks?hsLang=en) - [FarmChem Policy](https://support.farmchem.com/knowledge-base/farmchem-policy?hsLang=en) - [FAQ's](https://support.farmchem.com/knowledge-base/faqs?hsLang=en#main-content) - [DEF FAQ's](https://support.farmchem.com/knowledge-base/faqs?hsLang=en#def-faqs) - [Chem FAQ's](https://support.farmchem.com/knowledge-base/faqs?hsLang=en#chem-faqs) - [General](https://support.farmchem.com/knowledge-base/faqs?hsLang=en#general) - [Helpful Videos](https://support.farmchem.com/knowledge-base/helpful-videos?hsLang=en#main-content) - [Repairs & Maintenance](https://support.farmchem.com/knowledge-base/helpful-videos?hsLang=en#repairs-maintenance) - [Product Installation](https://support.farmchem.com/knowledge-base/helpful-videos?hsLang=en#product-installation) - [Calibration](https://support.farmchem.com/knowledge-base/helpful-videos?hsLang=en#calibration) - [Product Overview](https://support.farmchem.com/knowledge-base/helpful-videos?hsLang=en#product-overview) - [Winterization](https://support.farmchem.com/knowledge-base/helpful-videos?hsLang=en#winterization) - [Assembly](https://support.farmchem.com/knowledge-base/helpful-videos?hsLang=en#assembly) - [Walkthrough](https://support.farmchem.com/knowledge-base/helpful-videos?hsLang=en#walkthrough) - [Product Manuals & Schematics](https://support.farmchem.com/knowledge-base/product-manuals-schematics?hsLang=en#main-content) - [Calibration](https://support.farmchem.com/knowledge-base/product-manuals-schematics?hsLang=en#calibration) - [Closure Instructions](https://support.farmchem.com/knowledge-base/product-manuals-schematics?hsLang=en#closure-instructions) - [Product Manuals](https://support.farmchem.com/knowledge-base/product-manuals-schematics?hsLang=en#product-manuals) ## Contact **Sales & Support:** *💬 8AM – 5PM CST (M-F)* ☎ [(800)-247-1854](tel:8002471854) ✉ [Contact Us Form](https://farmchem.com/contact-us/) **Iowa Location** *📍 1017 Pearl Street, Floyd, IA 50435* **Tennessee Location** *📍 5558 Federal Ave, Memphis, TN 38118* ## Services - [Customer Portals](https://farmchem.com/customer-portals/) - [JDDEF Equipment](https://farmchem.com/jddef/) - [Senergy Equipment](https://farmchem.com/senergy/) - [Tank Monitoring](https://farmchem.com/tank-monitoring/) - [Plant Automation](https://farmchem.com/plant-automation/) - [Bulk Chem Facilities](https://farmchem.com/bulk-chemical-facilities/) - [Bulk Seed Facilities](https://farmchem.com/bulk-seed-facilities/) - [Custom Engineering](https://farmchem.com/custom-engineering/) - [FarmChem E-Quip](https://farmchem.com/e-quip/) - [All Services](https://farmchem.com/services/) ## Explore - [About Us](https://farmchem.com/about-us/) - [Customer Reviews](https://farmchem.com/reviews/) - [Terms Of Service](https://farmchem.com/terms-of-service/) - [Privacy Policy](https://farmchem.com/privacy-policy/) - [Shipping & Returns](https://farmchem.com/shipping-and-returns/) - [Online Catalog](https://farmchem.com/catalog/) - [Knowledge Base](https://support.farmchem.com/knowledge-base/?hsLang=en) - [Spray Tip Finder](https://farmchem.com/spray-tip-finder/) - [Tender Trailer Tool](https://farmchem.com/tender-trailer-tool/) - [Customer Account Form](https://farmchem.com/customer-account-form/) ![FarmChem Logo](https://farmchem.com/wp-content/uploads/2024/07/farmchem-logo.webp) ![SSL Secure Website](https://farmchem.com/wp-content/uploads/2024/07/ssl-secure-website.webp) ![Accepted Credit Cards](https://farmchem.com/wp-content/uploads/2024/07/credit-cards.webp) Copyright © 1974 – 2026 FarmChem® | All Rights Reserved