Coolant leak help
Cargo Master
Joined: Oct 2018
Posts: 2,811
Likes: 1,907
From: unfortunately Germany
@ blicharski1989: I wonder how the gear could come loose on your pump. Is it possible that you used a tool on the central gear screw of the pump to turn/crank the motor by hand? If so, it may have come loose?
With the early pump, a half turn of the central screw counterclockwise is sufficient for the gear to become loose and no longer drive the pump!
With the early pump, a half turn of the central screw counterclockwise is sufficient for the gear to become loose and no longer drive the pump!
Thread Starter
|
Tuned
Joined: Oct 2021
Posts: 478
Likes: 194
@ blicharski1989: I wonder how the gear could come loose on your pump. Is it possible that you used a tool on the central gear screw of the pump to turn/crank the motor by hand? If so, it may have come loose?
With the early pump, a half turn of the central screw counterclockwise is sufficient for the gear to become loose and no longer drive the pump!
With the early pump, a half turn of the central screw counterclockwise is sufficient for the gear to become loose and no longer drive the pump!
Cargo Master
Joined: Oct 2018
Posts: 2,811
Likes: 1,907
From: unfortunately Germany
What is incomprehensible to me about this is that the cam gear turns counterclockwise and drives the HPOP gear. That means that the central bolt of the HPOP is tightened during operation because the wheel of the HPOP rotates clockwise and it is theoretically impossible for this to loosen
Hotshot
Joined: Dec 2014
Posts: 17,828
Likes: 3,113
From: Jersey Shore
Assuming the bolt head stays in relation to the gear. A lot depends on the friction under the bolt head for it to self tighten. With a non-keyed straight shaft, the resistance to slipping is all about the correct clamp force/friction between the gear and the shaft face in the back. The surface area under the bolt and its radius is the minor player.
Thread Starter
|
Tuned
Joined: Oct 2021
Posts: 478
Likes: 194
Assuming the bolt head stays in relation to the gear. A lot depends on the friction under the bolt head for it to self tighten. With a non-keyed straight shaft, the resistance to slipping is all about the correct clamp force/friction between the gear and the shaft face in the back. The surface area under the bolt and its radius is the minor player.
FTE Stories
Ford Trucks for Ford Truck Enthusiasts
Top 10 Most Expensive Ford Trucks Ever Sold on Bring a Trailer
Joe Kucinski
2027 Ford Super Duty Buyer's Guide (Every Model, Engine, & Package)
Brett Foote
Top 10 Ford Truck Tragedies
Joe Kucinski
AEV FXL Super Duty - the Super Duty Raptor Ford Doesn't Make
Brett Foote
Lobo Vs Lobo: Proof the F-150 Lobo Should Be Even Lower!
Michael S. Palmer
Ford's 2001 Explorer Sportsman Concept Looks For a New Home
Verdad Gallardo
10 Best Ford Truck Engines We Miss the Most!
Joe Kucinski
2026 Shelby F-150 Off-Road: Better Than a Raptor R?
Brett Foote
2027 Super Duty Carhartt Package First Look: 12 Things You NEED to Know!
Michael S. Palmer
Mountain Pass
Joined: Oct 2012
Posts: 233
Likes: 65
From: Southern Indiana
I suspect that part of the gear to shaft, friction design is to protect the cam gear in case the pump has a failure and locks the shaft -- kinda goes along with the press fit swash plate idea
Fleet Owner
Joined: Nov 2003
Posts: 27,900
Likes: 3,617
Credit to @Ford_Doctor for these pics
https://www.forddoctorsdts.com/galle...50-60l-hpop-1/
https://www.forddoctorsdts.com/galle...51-60l-hpop-2/
https://www.forddoctorsdts.com/galle...-hpop-failure/
Plus the links to some early work on diagnosing an early HPOP that Sean eluded to is attached
https://www.forddoctorsdts.com/galle...50-60l-hpop-1/
https://www.forddoctorsdts.com/galle...51-60l-hpop-2/
https://www.forddoctorsdts.com/galle...-hpop-failure/
Plus the links to some early work on diagnosing an early HPOP that Sean eluded to is attached
Thread Starter
|
Tuned
Joined: Oct 2021
Posts: 478
Likes: 194
makes sense
Fleet Owner
Joined: Apr 2012
Posts: 27,307
Likes: 549
From: Spanaway
Credit to @Ford_Doctor for these pics
https://www.forddoctorsdts.com/galle...50-60l-hpop-1/
https://www.forddoctorsdts.com/galle...51-60l-hpop-2/
https://www.forddoctorsdts.com/galle...-hpop-failure/
Plus the links to some early work on diagnosing an early HPOP that Sean eluded to is attached
https://www.forddoctorsdts.com/galle...50-60l-hpop-1/
https://www.forddoctorsdts.com/galle...51-60l-hpop-2/
https://www.forddoctorsdts.com/galle...-hpop-failure/
Plus the links to some early work on diagnosing an early HPOP that Sean eluded to is attached
Tuned
Joined: Aug 2018
Posts: 259
Likes: 37
From: South Dakota
Man, I just caught up on this after a few weeks or almost a month and was bummed when I got to the second test drive part. I'm really hopeful you get it figured out and it's something simple (I guess if you want to call a few hours of work "simple") and it's just the HPOP.
Thread Starter
|
Tuned
Joined: Oct 2021
Posts: 478
Likes: 194
Man, I just caught up on this after a few weeks or almost a month and was bummed when I got to the second test drive part. I'm really hopeful you get it figured out and it's something simple (I guess if you want to call a few hours of work "simple") and it's just the HPOP.