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Graco 101173 Driv-Lok Pin

The Graco 101173 Driv-Lok Pin is an OEM drive assembly fastener designed to align and lock pump components securely for smooth, consistent operation. Ideal for professional Graco sprayers requiring reliable mechanical connection.

  • Part Number: 101173
  • Type: Drive Lock Pin
  • Used In: Ultra Max II 695, 795, GMAX II 3900, Mark V (verify model)
  • Function: Prevents slippage and ensures precise drive alignment
  • Quality: Genuine Graco OEM component for long service life

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OEM Details & Fitment — Graco 101173 Driv-Lok Pin

A genuine Graco drive-assembly locking pin used to secure/align components within the pump drive end. Always match by part number 101173 in your machine’s parts diagram.

Compatible Machines

The 101173 Driv-Lok Pin appears in multiple professional Graco airless sprayers’ drive assemblies. Typical usage includes the models below; please verify against your exact model/series and serial prefix in the official parts manual.

  • Graco Ultra Max II 695 (drive assembly) — verify P/N 101173 in the model’s parts list
  • Graco Ultra Max II 795 — confirm in the pump/drive exploded diagram
  • Graco GMAX II 3900 — check drive section bill of materials
  • Graco Mark V (ProContractor/HD generations may vary) — confirm by serial range

Product Overview

The Graco 101173 Driv-Lok Pin is a precision OEM fastener that locks/aligns drive-end components to maintain correct motion transfer and reduce wear. Using the exact OEM pin helps preserve pump longevity and consistent pressure output.

Key Benefits

  • OEM accuracy: Made to Graco tolerances for proper fit and retention
  • Reliable alignment: Helps prevent slippage/mis-stroke in the drive assembly
  • Long service life: Correct pin fit reduces premature wear on mating parts
  • Easy identification: Replace by exact part number 101173

Specifications

OEM Part No. 101173
Part Type Driv-Lok Pin (drive assembly fastener)
Function Locks/aligns drive components to ensure smooth, consistent pump operation
Compatibility Used across select Graco professional airless sprayers (see list above; verify by manual)
Package Contents 1 × Driv-Lok Pin
Installation Install per manufacturer torque/fit guidance; inspect mating parts for wear before reassembly

Installation & Maintenance Tips

  • Confirm part number 101173 in your model’s parts diagram before ordering.
  • Clean mating bores/shafts; remove burrs and replace any worn components during service.
  • If the original pin shows wear or looseness, inspect the drive link, gear, and bushings.
  • After assembly, test at low pressure and observe for vibration or irregular stroke.

Frequently Asked Questions

Not necessarily. Many Ultra Max II units use this pin, but generations/series differ. Always confirm against your model’s official Graco parts list by serial prefix.

Increased vibration, irregular stroke, unusual drive noise, or difficulty maintaining pressure. Inspect the pin and adjoining drive components during service.

Substitutions are not recommended. The OEM pin meets specific tolerances/hardness. Using non-OEM may lead to slippage or premature wear.

Check your machine’s parts manual (drive/pump exploded view). If the pin is listed as 101173, it’s correct. You can also provide your model and serial number for assistance.

Follow the Graco service manual for your specific model. Ensure proper seating and retention; replace any deformed pins and inspect mating components for ovality or burrs.

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