DAVIES CRAIG EWP80 EWP Remote Electric Water Pump Kit

Product Information

The EWP80, Alloy EWP80, EWP115, EWP140, and EWP150 Kits are water pumps manufactured by Davies Craig. These water pumps are designed to improve engine cooling efficiency and replace the mechanical water pump in vehicles. They are suitable for various applications and can be installed in any orientation once properly bled of air.

Kit Components:

• 1 Self-Tapping Screw
• 2 3mm (1/8) Rubber Sleeves (EWP80)
• 2 O-Rings (EWP80 & EWP140 Only)
• 1 Straight Flange Fitting (EWP80 & EWP140 Only)
• 1 Elbow Flange Fitting (EWP80 & EWP140 Only)
• 12 Nuts/Bolts (EWP80 & EWP140 Only)

Mounting Bracket:
To mount the EWP115, EWP140, and EWP150 models, it is recommended to use either Part #8700 or Part #8710 Mounting Bracket. These brackets provide additional support and help protect against vibration.

Product Usage Instructions

Leaving Mechanical Water Pump In Place:

1. Install the EWP into the bottom radiator hose, while keeping the mechanical water pump intact.
2. If running the pump continuously, remove the thermostat and drill two approximately 3mm (1/8) holes in the thermostat plate to allow coolant circulation. Re-install the thermostat housing with a new gasket if necessary.

Disabling Mechanical Water Pump:

1. Install the EWP into the bottom radiator hose, while leaving the mechanical water pump in place.
2. Remove the manufacturer’s thermostat.
3. Bypass the water pump pulley by installing an appropriate length belt (not supplied).
4. If running the pump continuously, remove the thermostat and drill two approximately 3mm (1/8) holes in the thermostat plate to allow coolant circulation. Re-install the thermostat housing with a new gasket if necessary.

Disengaged Mechanical Water Pump (Recommended):

1. Remove the mechanical water pump and thermostat from the engine.
2. Remove the impeller from the mechanical pump shaft.
3. Retain the mechanical water pump using the pump pulley as an idler to avoid re-routing the drive belt.
4. Block any bypass passages.
5. Re-install the disengaged water pump, ensuring clean gasket surfaces and proper fitting of new gaskets to prevent leaks.
6. Install the EWP into the bottom radiator hose.

Removed Mechanical Water Pump (Ideal):

1. Remove the mechanical water pump and thermostat from the engine.
2. Install a Davies Craig EWP Block Adapter or blanking plate (not supplied), ensuring clean gasket surfaces and using the correct gasket or sealant to prevent leaks.
3. Install the EWP into the bottom radiator hose.
4. Modify or replace the standard radiator hose if needed.
5. Install an appropriate length belt (not supplied) to drive the accessories.

Orientation:
The EWP can be installed in any orientation once it is completely bled of air. The preferred orientation is with the inlet horizontal or on an upward angle with the outlet at the highest point. This orientation assists with bleeding the pump and prevents air from becoming trapped.

EWP80 Specific:
Avoid installing the EWP80 with the inlet pointing vertically downward, as this can trap air in the seal chamber. The preferred orientation for the EWP80 is with the inlet horizontal or on an upward angle with the outlet at the highest point. This orientation is temporary and aids in bleeding the pump.

EWP KIT COMPONENTS

• 1 – EWP® assembly
• 1 – EWP® Wiring Harness
• 2 – Hose Clamps
• 1 – Wire joiner
• 1 – Ring Terminal
• 1 – Relay
• 1 – Self-Tapping Screw
• 2 – 3mm (1/8″) Rubber Sleeves (EWP80)
• 2 – O-Rings (EWP80 & EWP140 Only)
• 1 – Straight Flange Fitting (EWP80 & EWP140 Only)
• 1 – Elbow Flange Fitting (EWP80 & EWP140 Only)
• 12 – nuts/Bolts (EWP80 & EWP140 Only)

INSTALLATION OPTIONS

NOTE:
Before the EWP® is installed it is recommended that the cooling system is properly flushed.

INSTALLING AN EWP AS AN AUXILIARY PUMP

• Leaving the mechanical water pump in place, install the EWP into the bottom radiator hose.
• Remove the thermostat and drill two approx. 3mm (1/8″) holes in the thermostat plate to allow some coolant circulation. Re-install ensuring that the thermostat housing is clean, and a new gasket is used if required.

DISABLING MECHANICAL WATER PUMP

• Leaving the mechanical water pump in place, install the EWP into the bottom radiator hose and remove the manufacturer’s thermostat.
• You will need to bypass the water pump pulley by installing an appropriate length belt (not supplied). This method makes for an easy installation.
• If running the pump continuously remove the thermostat and drill two approx. 3mm (1/8″) holes in the thermostat plate to allow some coolant circulation. Re-install ensuring that the thermostat housing is clean, and a new gasket is used if required.

In both these cases, the EWP will pump past the impeller of the mechanical water pump.

In most cases, the weight of the EWP will be adequately supported by the radiator hose. Where mounting is required, the EWP must be soft-mounted to protect against vibration. For the EWP115, EWP140and EWP150 Part #8700 or

8710 Mounting bracket is recommended.

DISENGAGED MECHANICAL WATER PUMP (RECOMMENDED)

Note:
Recommended when using the EWP® & Fan Digital Controller.

• Remove the mechanical water pump and remove the thermostat.
• Then remove the impeller from the mechanical pump shaft. Retain the mechanical water pump using the pump pulley as an idler to avoid re-routing the drive belt.
• Block any bypass passages and re-install the disengaged water pump ensuring that all gasket surfaces are clean, and the new gaskets are properly fitted to prevent leaks.
• Install the EWP into the bottom radiator hose.

REMOVED MECHANICAL WATER PUMP (IDEAL)

Note:
Recommended when using the EWP® & Fan Digital Controller.

• Remove the mechanical water pump and thermostat from the engine.
• Install a Davies Craig EWP Block Adapter or blanking plate (not supplied). Ensuring the gasket surfaces are clean and the correct gasket or sealant is used to prevent leaks.
• Install the EWP into the bottom radiator hose. This method will require you to modify or replace the standard radiator hose.
• Install an appropriate length belt (not supplied) to drive the accessories.

PREFERRED ORIENTATION

Note:
The EWP® is not a self-priming water pump.

The EWP can be installed in any orientation once it is completely bled of air. The preferred orientation will assist with bleeding the pump and preventing air from becoming trapped in the pump.

FOR THE EWP80

• Avoid installing the EWP80 with the Inlet pointing vertically downward, where air can be trapped in the seal chamber.
• The preferred orientation for the EWP80 is with the inlet horizontal or on an upward angle with the outlet at the highest point.
  • This orientation is a temporary requirement for the purpose of bleeding the pump and ensuring there is no air trapped within the pump housing. The pump can be set up in another orientation upon completion of the bleeding procedure.

FOR THE EWP115, EWP140 AND EWP150

• The preferred orientation for the EWP115, EWP140, and EWP150 is with the inlet horizontal or on a downward angle with the outlet at the highest point.
• Avoid installing the EWP115, EWP140, and EWP150 with the Inlet pointing vertically Upwards. in this orientation, air can be trapped in the seal chamber.

WIRING

IMPORTANT:
The black wire of the EWP motor must go to earth (negative)

Wiring for Continuous Running

• Using the provided wiring harness connect the GREEN wire to the ignition.
  • You may use a manual or thermal switch on the ignition wire for added control over the pump.
• Plug the EWP into the plug on the BLUE and BLACK wires on the wiring harness.
• Connect the BLACK wires to earth (negative).

Wiring to EWP® & Fan Digital Controller, #8002 (Recommended) 

• Install the Controller as per instructions and plug the EWP into the BLUE and BLACK wire on the controller’s loom.

Wiring for Control by Thermatic® switch

(Recommended for auxiliary pump applications only)
Davies, Craig has a full range of Thermatic® Switches available in both mechanical (#0401, #0404 & #0400) and Digital Thermatic® Switches (#0444 &

0500).

• Wire the pump as directed by the wiring instructions provided with the Thermatic® Switch.
  • All Davies, Craig Thermatic® Switches are ON/OFF.
  • To allow EWP to run on after hot shutdown, wire the Switch directly to the battery.

IN ALL CASES, ONCE EWP INSTALLATION AND WIRING ARE COMPLETE.

• Road test the vehicle and allow the engine to reach normal operating temperature.
• Check the coolant level again once the engine has cooled sufficiently. Top up if needed.

INSTALLATION RECOMMENDATIONS

• It is highly recommended the EWP® is operated for at least 5 minutes of constant running every month. This will minimize the build-up of any sediment in the EWP and lubricate parts within the pump.
• For some vehicles, in cold climates, or when running the EWP continuously you may require the use of a thermostat to help control the coolant temperature. In these cases, you will need to drill 2 x 3mm (1/8″) holes in the thermostat plate.
• The installation of an EWP® may affect coolant flow through auxiliary coolant loops and the heater core. This change in flow may affect the performance of these loops unless the return line is relocated to the EWP Inlet.
• Block the Thermostat bypass passage, to prevent flow from your EWP passing directly back to the radiator without passing through the engine.

WARNINGS

• Do not operate your EWP® dry as seal damage may occur, and your warranty may be jeopardized.
• Waterless coolants increase the load on an EWP® and may reduce pump life.
• Do not use ‘stop leak’ or similar leak or crack repair additives as pump damage may occur and your warranty will be jeopardized.
• The EWP® must always completely full of coolant to achieve the life and performance expectations of your EWP®.
• The EWP® impeller tip clearance has been designed to achieve maximum efficiency and is therefore very close to the housing. When new and bedding in, the impellor may touch the internal wall of the EWP® housing causing a slight noise. This sound will cease within a short time after the impeller has bedded in.
• The installation of an EWP® may affect coolant flow through auxiliary coolant loops. This change in flow may affect the performance of auxiliary systems like the heater, LPG converter and Turbo cooling. In these cases, you may require an Electric Booster Pump (EBP) to provide constant flow to these systems.
• DO NOT ATTEMPT to tamper with the EWP including loosening or removing any bolts/screws as this will void any warranty. If you suspect there is a fault or defective product please contact Davies, Craig IMMEDIATELY.

These installation instructions will suit most applications but there are circumstances surrounding some engine designs, environments, and the nature of the system involved, which may require other installation arrangements not outlined here. Frequently Asked Questions (FAQ) are listed on our website www.daviescraig.com.au Emails can be directed to info@daviescraig.com.au or Telephone at +61 (0) 3 9369 1234 during business hours.

WARRANTY

Davies, Craig Pty Ltd warrants for a period of three years or 2000 hours of continuous running (whichever is the lesser) from the date of purchase. Davies, Craig will carry out, free of cost, any repairs that are reasonably necessary to correct any fault in the operation of your Davies, Craig product provided that such a fault is directly attributable to a defect in the workmanship or materials used in the manufacture of the part(s). This warranty is void if the product is misused, altered, tampered with, or is installed or used in a manner that is inconsistent with Davies, Craig’s written recommendations and/or installation instructions. Labour and consequential costs are excluded.

DAVIES, CRAIG PTY. LTD.
To make a warranty claim, go to: daviescraig.com.au/warranty.

EWP® KIT INSTALLATION INSTRUCTIONS (#29823).

References

• DAVIES, CRAIG WARRANTY POLICY AND CLAIM FORM - Davies Craig
• Davies Craig
• Davies Craig
• DAVIES, CRAIG WARRANTY POLICY AND CLAIM FORM - Davies Craig

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