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Coolant Pressure Regulator Valve - Installation - AD0978

24.4 COOLANT PRESSURE REGULATOR VALVE - INSTALLATION

Last updated: 06/11/2026

Coolant Pressure Regulator Valve - Installation

AD0978

Revision A - 06/2026

Introduction

This procedure describes how to install a ball valve onto the coolant separator to allow manual control of coolant flow.

This procedure applies to the following kits :

  • 93-6528 COOLANT PUMP VALVE SVC KIT

 

 

 

Installation

1

Important : Make sure to depressurize the coolant system by using the washgun after turning off the machine before installation.

Release hose clamp [1] and remove coolant hose [2].

Remove cap [3].

Remove Barbed fitting [4] from coolant bypass valve.

 

2

Install the ball valve [1] onto bypass valve.

Reinstall barbed fitting [2] onto ball valve.

Install cap onto barbed fitting [3].

Important : Ensure the concave face of the hose cap [3] points toward the hose. Refer to the image.

 

3

Reinstall the hose and verify that the cap is facing the correct direction.

Slip the hose clamp [2] onto the hose near the end.

Install the hose onto the barbed fitting.

Crimp hose clamp using a crimping tool.

Lightly tug onto hose to verify a secure connection.

Turn on machine and run coolant through hose to verify there are no leaks.

 

Note : May need to cut hose to compensate for added length due to the addition of the ball valve. 

 

DC-Series Installation

Note : The following procedure pertains to the DC-Series machines. The use of the cap and hose clamp will not be used in this procedure.

 

1

Important : Make sure to depressurize the coolant system by using the washgun after turning off the machine before installation.

Remove elbow and coolant hose adapter fittings [1] from coolant bypass valve.

Note : Fittings [1] comes with two peices, do not seperate them.

2

Install the ball valve [1] onto bypass valve.

Reinstall fitting [2] onto ball valve.

Install hose to fitting [2]. 

Lightly tug onto hose to verify connection.

Turn on machine and run coolant through hose to verify there are no leaks.

Note : May need to cut hose to compensate for added length due to the addition of the ball valve.