GRACO Repair Kit, Pinion Housing, 3900 Series - (SKU: 245398)The GRACO 245398 is a repair kit for the pinion housing of the 3900 series airless sprayers. It is designed to restore or maintain the functionality of the pinion housing assembly, which is a critical component in the drive system of GRACO airless sprayers. The kit is intended for use in professional and industrial settings where reliable equipment performance is essential. Material specifics are not specified, but GRACO repair kits are typically made

ensuring consistent pressure and delivery in applications such as lubrication

Supply Tube

Verify correct connector orientation before plugging in

Regularly inspect and replace worn piston rods to prevent pump failure

Engineered for high output applications

ensuring operational integrity and safety

and traceability for maintenance and warranty purposes

Clean all parts during disassembly and inspect for wear or damage

3/8 NPT(f) x 1/4 NPSM(f)

Regular preventative maintenance is recommended for longevity

Consult GRACO specialists for expert guidance on setup and maintenance

but it is engineered for heavy-duty performance and reliability