Classic Ford Maintenance

Flathead V8 Water Pump and Mount Service Guide

Flathead V8 Water Pump & Mount Service Guide
1937–1948 Ford Passenger Car | 1939–1948 Mercury V8

Servicing the cooling system on a 1937–1948 Ford passenger car or 1939–1948 Mercury V8 requires more than just swapping a part. The flathead platform integrates the water pumps, front engine mounts, and cooling hoses in a way that makes access and sequencing important. Whether you’re replacing water pumps, water pump bolts, or addressing motor mounts at the same time, the process benefits from a clear plan.

The parts referenced here include:

These components are commonly serviced together on 37–48 Ford and 39–48 Mercury V8 applications due to their physical proximity and shared mounting areas.

Why These Systems Overlap

On these flathead V8 engines, the water pumps mount at the front of the block and are positioned near the front motor mount assembly. In many cases, removing the pumps requires relieving load from the mounts. Aging rubber mounts can sag over time, changing engine position slightly and complicating pump removal or installation. Addressing motor mounts during cooling system service can help maintain proper engine alignment.

Fitment may vary slightly by model year or chassis configuration. Always confirm application for Ford passenger car versus Mercury V8 before ordering parts. Give us a call or email and we will answer your questions!

Basic Removal Sequence

A structured approach reduces stress on hardware and surrounding components:

Drain Coolant
Begin by fully draining the cooling system. Open the radiator petcock and, if equipped, block drains to remove as much coolant as possible.
Remove Radiator Hoses (Upper and Lower)
Disconnect both hoses from the radiator and water pump outlets. Inspect hose condition during removal.
Loosen Motor Mount Bolts
The front motor mount assembly may need to be loosened to allow slight engine movement. Do not fully remove the mount until the engine is properly supported.
Support the Engine
Carefully jack up the engine using a wood block under the oil pan. The wood block helps distribute load. Raise only enough to relieve tension from the mounts.
Remove All Eight Water Pump Bolts
Each pump is secured with multiple bolts. Remove all mounting hardware evenly to prevent binding. The water pump bolt kit (78-8501-HK) ensures proper hardware replacement if originals are corroded or worn.
1. *PRO TIP there is a bolt in each of the lower water pump outlets.

Once the bolts are removed, the water pumps (78-8501-PR) can be removed from the block. Surfaces should be cleaned thoroughly before re-installation.

Motor Mount Considerations

The motor mount kit (78-6038-BDK) supports the engine’s front weight and isolates vibration from the frame. When mounts are deteriorated, engine position may shift slightly. Replacing mounts during water pump service is practical because access is already established and the engine is supported.

Fitment should always be verified for specific Ford passenger car or Mercury V8 applications within the 1937–1948 and 1939–1948 ranges.

Restoration-Focused Approach

Flathead cooling system service is straightforward when handled methodically. These engines were designed for serviceability, but age introduces corrosion, hardware fatigue, and rubber deterioration. Replacing water pumps, water pump bolts, and motor mounts as a coordinated service helps maintain structural alignment and cooling integrity.

Taking the time to follow proper removal steps protects original components and ensures the flathead V8 continues operating as intended.

View our full selection of Flathead V8 Water Pumps and Cooling Components.

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General

YOUR CLASSIC FORD PARTS STORE

YOUR CLASSIC FORD PARTS STORE If you own a classic Ford, you’re used to dependability. You go out, you start the vehicle, and it runs. That’s the way it should be. After all, when it’s an older Ford, it has longevity built right into it. Sometimes, though, things will take a toll on the best ride you’ve ever owned. Could be the weather - or a little ding or two that happens when someone isn’t paying attention and they run into you. Whatever the reason, if you’ve got something on your list that you need for your old Ford, you can find it at a C&G Ford Parts. You’ll find thousands upon thousands of parts that can get your Ford in the best shape, even if you own one from the late 1970's. That’s sure to give you peace of mind right there. Say you’ve got a 1979 Ford F150 pickup. The jet-black custom paint on it just glints in the sunlight. Your truck is the envy of the neighborhood and everywhere else that you take it. You worked hard for that truck and you deserve to show it off. Taking a friend out for a round or two of golf, you park the truck in the lot carefully away from other cars. But you know how it goes. There always has to be someone who parks right up on you. Only this time, they broke your driver’s side mirror up pretty good and took off without having the decency of letting anyone know. When you do a thorough examination, you see that the door is fine, but the mirror can’t be repaired - the damage is too bad. It’s got to be replaced. Besides making you mad, you’re now faced with the task of figuring out where you’re going to go to get one like it. No worries, because you can get the part you need right at a classic Ford parts store, C&G Ford Parts to be exact. Places that have the stock you’re looking for can easily cover getting you that mirror in no time. Best of all, getting that replacement mirror in an exact match for your truck isn’t going to cost you every penny you’ve got in the bank. At C&G Ford parts, not only will you find what you need when you need it, but you’ll find it for a reasonable price as well. You can’t always prevent bad drivers from doing foolish things and ending up damaging your Ford. But you can rest assured knowing that a C&G Ford parts has got you covered. So take that truck out for a spin any time. They’ll be waiting on you when you need them.

Steering Wheel Removal Guide

Ford Applications Using D4TZ-3600-A Steering Wheel & D3TZ-13A805-A Horn Pad Servicing the steering column on classic Ford vehicles often requires removing the steering wheel assembly. When working with steering wheel D4TZ-3600-A and horn pad D3TZ-13A805-A applications, the process is straightforward when approached in the correct sequence and with the proper tool. This guide outlines the removal procedure based on original shop notes and preserves the mechanical order of operations. Application Scope Applies to Ford vehicles equipped with: D4TZ-3600-A Steering Wheel D3TZ-13A805-A Horn Pad TOOL-3600 Steering Wheel Puller Application may vary by model year or steering column configuration. Always confirm fitment before ordering replacement components. Original Shop Notes Remove two screws holding horn pad Undo wiring clips for horn pad Loosen steering wheel nut Attach steering wheel tool Loosen wheel Remove tool and nut Remove wheel Step-By-Step Technical Interpretation 1. Remove Horn Pad Retaining Screws The horn pad is secured to the steering wheel by two screws. Removing these fasteners allows access to the internal wiring and steering wheel retaining nut. Use appropriate screwdriver to avoid damaging the screw head. 2. Disconnect Horn Pad Wiring Clips With the horn pad removed, carefully release the wiring clips connected to the horn contact assembly. These clips must be detached before steering wheel removal to prevent wire strain or terminal damage. 3. Loosen the Steering Wheel Retaining Nut Loosen the steering wheel nut but do not remove it completely at this stage. Leaving the nut partially threaded helps protect the steering shaft threads during puller use. 4. Install Steering Wheel Puller (TOOL-3600) Attach the steering wheel puller evenly to the threaded mounting holes in the wheel hub. The puller applies controlled pressure to separate the steering wheel from the tapered steering shaft. Using a puller prevents damage to the wheel hub and avoids stressing the column bearings or shaft splines. 5. Release the Steering Wheel from the Shaft Once the puller is properly secured, gradually tighten the tool until the steering wheel breaks free from the taper. After the wheel loosens, remove the puller and fully remove the steering wheel nut. The steering wheel can then be lifted off the column shaft. When Steering Wheel Removal Is Necessary Steering wheel removal is typically required during: Turn signal switch service Steering column restoration Column bearing inspection Steering wheel replacement Because the steering wheel is mounted on a tapered shaft, proper tool use is recommended to avoid damage. Restoration Considerations On older Ford steering columns, corrosion or age can increase resistance between the wheel hub and shaft taper. Controlled puller pressure is preferable to prying or hammering methods. Inspect wiring connectors and horn contacts while the assembly is disassembled. Access during wheel removal provides an opportunity to evaluate column components without additional tear down. Confirm steering column configuration and model year before ordering steering wheels, horn pads, or related steering components. Explore our full selection of classic Ford steering wheels, horn pads, and steering column components.

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Classic Ford Parts

Classic Ford parts are essential components for enthusiasts and collectors who aim to restore, maintain, or customize their vintage Ford vehicles. Ford, one of the most iconic automakers in history, has produced a range of classic cars that have a special place in the hearts of many. From the legendary Model T to the Mustang, the legendary F series pick ups and Mercury's each classic Ford model has its unique set of parts and accessories that are sought after by collectors and restorers worldwide. The allure of classic Ford parts lies in their ability to bring a piece of automotive history back to life. These parts are not just replacements; they are fragments of a bygone era, each with a story to tell. Restoring a classic Ford using reproduction parts is like preserving a piece of art. It's about maintaining the integrity and authenticity of a vehicle that has been a symbol of American culture and innovation. One of the challenges in restoring classic Fords is finding the right parts. Authentic parts are often scarce, and locating them can be a painstaking process. Fortunately, C&G Ford Parts has made it easier for enthusiasts and restorers to find what they need. We have have a vast inventory of reproduction parts, from crank pulleys to dash bezels, and we cater to a range of models and years. The quality of classic Ford parts is paramount. Authentic parts are typically more durable and fit better than aftermarket replicas, but are very hard to find. Reproduction parts on the other hand ensure that the vehicle remains true to its original form, which is crucial for maintaining its appeal. For those who cannot find authentic parts, high-quality reproductions are the next best option. These parts are manufactured to match the original specifications as closely as possible. For many, the restoration of a classic Ford is more than a hobby; it's a passion. It involves meticulous work and a deep appreciation for the craftsmanship and engineering of a bygone era. Whether it's a complete restoration or a minor repair, using classic Ford parts is essential to keeping the legacy of these timeless vehicles alive. As these cars continue to age, the demand for high-quality classic parts is only expected to grow, making them an integral part of the classic car community.