Some governors we have overhauled through the years
C290D3's and a C290D4 McCauley
C290D3's and a C290D4 McCauley
Woodward 210680 V-Band styles
Woodward 210680 V-Band styles
Hartzell F-6's
Hartzell F-6's
Hartzell's and Woodward Pulley Heads
Hartzell's and Woodward Pulley Heads
Early B210105 Woodward
Early B210105 Woodward
Newer 210800 Woodward
Newer 210800 Woodward
McCauley and Woodward
McCauley and Woodward
Woodward Pulley Head
Woodward Pulley Head
Hartzell S Series
Hartzell S Series
Hartzell S Series
Hartzell S Series
E Series Hartzell
E Series Hartzell
Woodward B210710's
Woodward B210710's
New Aero Technologies ATH-1
New Aero Technologies ATH-1
ATH-1 Replacement for Hartzell H-1
ATH-1 Replacement for Hartzell H-1
Before and after overhaul photos
McCauley DCF290D7's as received
McCauley DCF290D7's as received
Same pair after overhaul
Same pair after overhaul
DCFS290D7 (Master) and DCFS290D8 (Slave) as received
DCFS290D7 (Master) and DCFS290D8 (Slave) as received
Same pair after overhaul
Same pair after overhaul
DCFS290D7/T3 and DCFS290D8/T3
DCFS290D7/T3 and DCFS290D8/T3
Same pair after overhaul
Same pair after overhaul
Governors have been sent in for overhaul for various reasons and we have seen and repaired everything. We take photos of extraordinary issues for our customers. Showing them what we found is the easiest way to explain it. Below are some of the photos.
Pitting on the bearing race, pilot valve, and bearing of an old Woodward governor.
Pitting on the bearing race, pilot valve, and bearing of an old Woodward governor.
I often take photos next to the governor data plate so the customer can see it is theirs.
I often take photos next to the governor data plate so the customer can see it is theirs.
Obsolete style lever, pitted pilot valve, bearing and race, and also wear on the drive spline of the drive gear.
Obsolete style lever, pitted pilot valve, bearing and race, and also wear on the drive spline of the drive gear.
Pitting on a pilot valve right in the bearing track and a used serviceable pilot valve with no pits.
Pitting on a pilot valve right in the bearing track and a used serviceable pilot valve with no pits.
Same set as above. Photo taken so customer can see what we will use to replace theirs with.
Same set as above. Photo taken so customer can see what we will use to replace theirs with.
More pictures of pitting.
More pictures of pitting.
This governor came in with metal contamination from the engine.
This governor came in with metal contamination from the engine.
We take pictures of all the metal throughout the oil and save samples of the metal to help the customer determine where it came from.
We take pictures of all the metal throughout the oil and save samples of the metal to help the customer determine where it came from.
More metal chunks.
More metal chunks.
Closer view of the contamination.
Closer view of the contamination.
This is a brand new Hartzell governor straight from Hartzell. Customer said it wouldn't work at all.
This is a brand new Hartzell governor straight from Hartzell. Customer said it wouldn't work at all.
I pulled off the top cover and the speeder spring was found like this. It is cone shaped and upside down.
I pulled off the top cover and the speeder spring was found like this. It is cone shaped and upside down.
The spring fits tight in the spring cup on the pilot valve.
The spring fits tight in the spring cup on the pilot valve.
The top is smaller and the control shaft can now push down on it. It was just flipped back over and everything tested great.
The top is smaller and the control shaft can now push down on it. It was just flipped back over and everything tested great.
This is the sync coil that is inside of a Woodward B210710. The crimp had come loose and the coil dropped down allowing the flyweights to grind away at the coil.
This is the sync coil that is inside of a Woodward B210710. The crimp had come loose and the coil dropped down allowing the flyweights to grind away at the coil.
This is showing the four crimp spots on the other side of the coil assembly that I used to replace the damaged one.
This is showing the four crimp spots on the other side of the coil assembly that I used to replace the damaged one.
This is a Lycoming governor drive adapter that came in attached to a governor and had a crack in it. The customer had no idea. I was able to locate another good drive adapter for him.
This is a Lycoming governor drive adapter that came in attached to a governor and had a crack in it. The customer had no idea. I was able to locate another good drive adapter for him.
This is a Woodward idler gear that is from before they had a bearing pressed into them. The idler gear can't be used.
This is a Woodward idler gear that is from before they had a bearing pressed into them. The idler gear can't be used.
This is a Hartzell that had been on a shelf for years. The customer wanted to function test and use it. I saw rust on the drive gear and disassembled to find every steel part inside rusty.
This is a Hartzell that had been on a shelf for years. The customer wanted to function test and use it. I saw rust on the drive gear and disassembled to find every steel part inside rusty.
This is the rusty steel sleeve inside of the aluminum top cover.
This is the rusty steel sleeve inside of the aluminum top cover.
Governors in various stages of the overhaul process.
Some simple McCauley's ready to build.
Some simple McCauley's ready to build.
A pair of Woodward Pulley Heads.
A pair of Woodward Pulley Heads.
D8 McCauley parts. Sync motor assembly, etc.
D8 McCauley parts. Sync motor assembly, etc.
A pair of Hartzell's laid out.
A pair of Hartzell's laid out.
Working on several. Hartzell to the left, this is a Woodward, McCauleys to the right.
Working on several. Hartzell to the left, this is a Woodward, McCauleys to the right.
D7 and D8 McCauley
D7 and D8 McCauley
Governors being overhauled and manuals laid out for reference.
Governors being overhauled and manuals laid out for reference.
Just painted, ready to assemble and test.
Just painted, ready to assemble and test.
Several Woodward governors.
Several Woodward governors.
Alodine (Chemical conversion coating) on the aluminum parts.
Alodine (Chemical conversion coating) on the aluminum parts.
Shop Photos
Our governor test bench.
Our governor test bench.
Upgraded with a polished aluminum control panel fitted with digital gauges.
Upgraded with a polished aluminum control panel fitted with digital gauges.
Unfeathering governor mounted on the test bench for testing.
Unfeathering governor mounted on the test bench for testing.
1940 US Navy Greer Hydraulics propeller governor test bench from Pearl Harbor, HI.
1940 US Navy Greer Hydraulics propeller governor test bench from Pearl Harbor, HI.
Magnetic particle inspection bench.
Magnetic particle inspection bench.
Magnetizing a governor drive gear on a copper rod.
Magnetizing a governor drive gear on a copper rod.