Tech Tip: Avoid Cadillac Water Pump Installation Woes

Tech Tip: Avoid Cadillac Water Pump Installation Woes

Anyone who has ever changed a water pump on a 1985-'95 Cadillac 4.1L, 4.5L or 4.9L knows that it is a job they don’t want to have to redo due to a false step during installation. However, there is some useful information available that could help avoid a potentially big installation headache.

Anyone who has ever changed a water pump on a 1985-’95 Cadillac 4.1L, 4.5L or 4.9L knows that it is a job they don’t want to have to redo due to a false step during installation. However, there is some useful information available that could help avoid a potentially big installation headache.

These particular Cadillac models’ water pumps are tough to get to under the hood because of their tight location. Plus, the pumps are secured with what seems like hundreds of fasteners. What some installers may not realize is that there are two bolts located very close to the outside edge of the water pump that must not be disturbed during the pump’s replacement. THESE BOLTS SHOULD NOT BE REMOVED! (See figure below.)

Two bolts connect the timing cover to the water pump inlet cover located behind the timing cover. If the bolts are removed, the inlet cover gasket, which is sandwiched between the timing cover and the inlet cover, will likely shift and leak upon installation of the new pump. Coolant can seep downward, clinging to the timing cover as it runs, making it appear that the new water pump has developed a leak. Several unproductive hours (and more banged up knuckles) can result while locating and correcting this new leak. Additionally, the timing cover should be checked for flatness prior to pump installation. It may be dimpled where the 6mm studs protrude from the cover because of prior over-tightening of the corresponding nuts. A dimpled cover will prevent proper gasket sealing. Repairing today’s vehicles can be frustrating enough without allowing either of these unnecessary headaches to occur.

Be sure to remember that the fasteners should be tightened to proper torque value in a staggered pattern, alternating from one side of the pump to the other in a circular fashion, to make sure the gasket seats evenly. The torque specifications and sequence for the fasteners are as follows:

1. 4 torx head bolts = 30 FT. LBS.
2. 7 hex head nuts = 5 FT. LBS.
3. 1 stud = 30 FT. LBS.
4. 7 hex head bolts = 5 FT. LBS.

For more selling tips, technical information or water pump installation assistance, visit ASC Industries, Inc., online at www.asc-ind.com.

You May Also Like

Channellock to Feature New Tools at National Hardware Show

NHS attendees can expect daily demos and/or giveaways of CHANNELLOCK tools when they visit Booth SL6065. 

Channellock, Inc. will feature its newest hand tools at this year’s National Hardware Show in Las Vegas, N.V. on January 31 - February 2, 2023. Attendees are encouraged to stop by Booth SL6065 at the Las Vegas Convention Center to learn more about CHANNELLOCK tools and their use in the skilled trades, as well as participate in daily tool demos and giveaways. 

Marketing To High-Value Customers

Neglecting vehicles could lead to more costly repairs for customers down the line. This video is sponsored by Continental.

Updated John Bean Website Provides More Information

Redesign makes it easier to locate more in-depth information.

Stertil-Koni Reports Record Lift Orders, Sales in 2022 

Superior engineering, customer support and real-world performance fuel accelerated growth.

Prevent Cold Stress with 3 Steps for Choosing Winter PPE

Protect workers from hypothermia, frostbite, and other dangerous illnesses.

Other Posts

New Digital Lifting Points Guide from ALI

Electronic guide makes it easy to find OEM lifting point information.

Auto Techcelerators Joins Opus IVS

Combination opens new opportunities for innovation and productivity advances in ADAS services processes.

OIL EATER Launches Overnight Stain Remover

Pulls out oil stains in 3 effortless steps: apply, dry & sweep away.

New Master Series HL1000 and PL 500 from NEBO Lights

The HL1000 Headlamp and Task Light provide up to 1,000 lumens of bright light and various hands-free lighting option.