Service Home How To Procedures Standard Coolant – Universal - Pump - 3/4 HP - Replacement - AD0217

Standard Coolant – Universal - Pump - 3/4 HP - Replacement - AD0217

3.2 Coolant Pump - Replacement

Last updated: 02/15/2021

Standard Coolant - Pump - 3/4 HP - Replacement

AD0217

Applies to machines built from: April, 1998

Introduction

The 3/4 hp Single-Phase Universal Replacement Pump:

  • You can adapt this universal replacement pump to fit all machines that use a 3/4 hp single-phase pump.
  • The replacement pump fits and will operate the same as the old pump, although it may look different from the old pump.
  • Sheetmetal from your old pump will bolt onto the new unit. 
  • If the power cable on the new pump is different from the old pump, move the cable from the old pump to the new pump.

Inspect the impeller before replacing entire pump assembly. Replacing a damaged impeller can correct noise and output issues. Refer to Standard (Flood) Coolant - System - Troubleshooting Guide for impeller replacement instructions.


Machine Compatibility

You can install the 3/4 hp, single-phase Universal Replacement Pump on any machine that currently has a 3/4 hp, single-phase coolant pump.

Document Applies to these Parts

[A] 30-11848A QTY: 1 CLNT PUMP/MOTOR ASSEMBLY 3/4HP 1PH

[B] 26-7650A QTY: 1 PUMP IMPELLER

Tools Required

  • Wire Cutters
  • Crescent Wrench
  • Phillips Screwdriver
  • 3/16" Allen Wrench
  • Drill Bit - "Q" (0.322")
  • 1/8" NPT Tap and Handle
  • Drill
  • Thread Sealing Tape

Replacement

1

If a standard auxiliary coolant filter (AF-STD) system [1] is not connected to the old pump, do Step 2.

If a standard auxiliary coolant filter (AF-STD) system [1] is connected to your old pump, drill and tap a 1/8" NPT hole at the location on the pump shown.

2

Disconnect and remove the old pump [1] from the coolant tank.

Remove the hose fittings [3] from the old pump. Note their orientation and order.

Remove the old pump from the stand [2], if applicable.

Install the PUMP/MOTOR [A] into the old stand, if applicable. Use the old hardware.

Apply sealant to the threads of the old fittings [3]. Install the fittings [3] on the PUMP/MOTOR [A] in the correct location [4].

Connect the AF-STD fittings to the new pump, if applicable.

3

Do this step if you must replace the PUMP/MOTOR [A] and the plug on new cable [1] is not compatible with the machine:

Note the wiring before removing the cable. Remove the cable [1] from the old pump motor. Remove the cover and cable from the new PUMP/MOTOR [A]. Install the cable [1] from the old motor to the new PUMP/MOTOR [A].

Correctly connect the old cable to the new PUMP/MOTOR [A]. Use the (2) CRIMP WIRE NUTS [B]. Use wire strippers and crimp pliers to correctly connect the cable.

Install the new pump assembly into the coolant tank. Connect the supply hoses and power connector.

If you have an AF-STD system, install the 1/4" hose and the 1/8" to 1/4" fitting from the AF-STD kit into the hole you drilled in STEP 1.

Push COOLANT. Make sure the coolant system operates correctly. Examine all connections for leaks.