Graco 101545 Cotter Pin
$7.20
In Stock
Graco 101545 Cotter Pin is a genuine OEM fastener designed to secure pump or tie-rod connections in select Graco sprayers and pump assemblies.
- Ensures firm locking and prevents loosening under pressure
- Used in Monark and President pump assemblies
- Corrosion-resistant and easy to install
- OEM quality for long-lasting reliability
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Overview & Compatibility for Graco 101545 Cotter Pin
Compatible Machines / Assemblies
- Graco 223596 Monark Pump (23:1) — uses cotter pin in old-style ball-check assembly.
- Graco 237958 Monark SST Pump (23:1) — same application.
- Graco 239140 President SST Pump (46:1) — listed for old-style ball-check version.
Product Description
Graco 101545 Cotter Pin (sometimes written as 101-545) is an OEM locking fastener used to secure pump/tie-rod or clevis connections in select Graco displacement pump assemblies. It prevents loosening and misalignment under repeated high-pressure cycling.
Key Features
- Genuine OEM replacement part for select Graco pumps.
- Simple, reliable mechanical lock for rods/links within the pump module.
- Corrosion-resistant construction for long service life.
- Lightweight hardware that’s easy to keep in a rebuild kit.
Fitment Notes
- Use only where the official parts diagram specifies 101545 (older “ball-check” pump styles commonly).
- If your diagram references a different pin (e.g., another part number), do not substitute.
- When installing, insert through the drilled hole and bend ends per Graco service procedure.
Specifications
| Part Number | 101545 (aka 101-545) |
|---|---|
| Part Type | Cotter Pin / Locking Fastener |
| Typical Use | Securing displacement-rod / tie-rod / clevis connections in pump assemblies |
| Material | Corrosion-resistant metal (stainless or equivalent, per assembly spec) |
| Package Contents | 1 × Cotter Pin |
Maintenance Tips
- Replace any bent, fatigued, or corroded cotter pins during pump service.
- Always verify orientation and fully secure the legs after insertion.
- Re-check after initial run-in; vibration should not back the joint out.
Frequently Asked Questions
Check your sprayer’s parts diagram or pump manual. If it lists Graco 101545 at the relevant joint, this is the correct replacement.
For pressure equipment, always follow Graco specifications. Using the OEM-specified pin ensures proper fit and retention under load and vibration.
Commonly at the displacement-rod, tie-rod, or clevis connection points in older ball-check style pump assemblies (e.g., Monark/President modules listed above).
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