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1. Introduction
2. Safety
3. ARO Aftermarket Parts Information
4. Disassembly – Overview Required Tools
5. Disassembly – Alignment Markings
6. Disassembly – Disconnect Motor / Lower
7. Disassembly – Primer Plate Disassembly
8. Disassembly – Remove the Solvent Cup
9. Disassembly – Remove Outlet Body
10. Disassembly – Remove Tie Rods
11. Disassembly – Remove Suction Tube
12. Disassembly – Disassemble Plunger and Packing Assembly
13. Disassembly – Disassemble Packing Assembly
14. Disassembly – Remove Check Stop Assembly
15. Disassembly – Disassemble Check Stop Assembly
16. Disassembly – Remove and Disassemble Upper Check
17. Disassembly – Disassemble Pressure Chamber Body
18. Disassembly – Disassemble Outlet Body
19. Kit Installation & Assembly
20. Kit Installation & Assembly Overview
21. Assembly – Lubricate Packings & Seals
22. Assembly – Check Reassembly
23. Assembly – Seat and Packing Assembly
24. Assembly – Seat Assembly
25. Assembly – Pressure Chamber Body
26. Assembly – Check Stop Into Pressure Chamber Body
27. Assembly – Valve and Primer Rod Assembly
28. Assembly – Valve Rod Assembly
29. Assembly – Plunger Rod Assembly
30. Assembly – Suction Tube Assembly
31. Assembly – Check Stop Assembly
32. Assembly – Primer Rod Assembly
33. Assembly – Tie Rod Installation
34. Assembly – Outlet Body Assembly
35. Assembly – Solvent Cup Assembly
36. Assembly – Outlet Body Assembly
37. Assembly – Outlet Body Installation
38. Assembly – Tie Rod Assembly
39. Assembly – Plunger and Primer Rod Installation
40. Assembly – Primer Plate Assembly
41. Assembly – Primer Plate Assembly
42. Assembly – Solvent Cup Assembly
43. Assembly – Pump Connection Upper / Lower
Step 20 of 43

Kit Installation & Assembly Overview

Use 637071-XXX-B for general repair of 66243-XXX lower pump ends.

Completely clean parts, evaluate and inspect for wear.

Key areas for wear:

  • Plunger
  • Main material tube
  • Balls
  • Seats
  • Packings
  • Foot valve body parts

With the foot valve body parts, inspect the ball, seat, pin and the ball guides for wear and damage. Inspect the parts for scratches etc. Dirty and/or worn parts should not be returned to pump during assembly.

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