*** Before starting this procedure, check all the vacuum lines. Many times they are the issue. For a few bucks go ahead and replace them. ***
I have been piecing back together a GSA M1009. One of the many issues was the tranmission was shifting hard. I searched the CUCV forum and found a few threads.
http://www.steelsoldiers.com/cucv/6748-whats-part-called.html
http://www.steelsoldiers.com/cucv/33767-m1009-vacuum-lines.html
The TM 9-2320-289-20 tells you how to adjust the Vacuum Valve, but you need the special tool J-33043. I found it in the internet for $150.
Instructions are in the TM 9-2320-289-20, Chapter 3-21.1 page 3-64. Adjustments are made with the engine off.
Kent-Moore Tools J-33043 VACUUM GAUGE BLOCK ASSEMBLY
I found the size on another website of .646" or 323/500". I didn't have one laying around. So being the cheap Bas***d I am, I made my own...
I took a piece of wood and cut it down to size. I added the wire so I wouldn't drop it into the manifold again....
Instructions are in the TM 9-2320-289-20, Chapter 3-21.1 page 3-64. Adjustments are made with the engine off.
Here are the steps:
Before you begin, install a vacuum gauge on the vacuum pump and make sure the pump is functioning correctly. It should produce 20" of vacuum.
1. Replace bad vacuum lines
2. Loosen bolts on valve
3. Hooked up my MightVac to the bottom port
4. A vacuum gauge to the top port
5. insert block under throttle shaft per instructions, hold throttle against block
6. Apply 20" vacuum to bottom port
7. Rotate valve until you have 8" of vacuum at top port.
8. Tight bolts and put everything back where it belongs
(The vacumm pump hose to the bottom port, transmission line to the top
port)
9. Take it for a test drive
If your valve is bad you will not find it at the usual parts houses. I have seen them at some of the Military Supply Houses and they run ~$90.
From the TM 9-2320-289-20p parts manual Figure 10 , Item #10 the GM part number is 14057219. Sometimes you can find them at the dealership or online.
Another item off of the check list.
I have been piecing back together a GSA M1009. One of the many issues was the tranmission was shifting hard. I searched the CUCV forum and found a few threads.
http://www.steelsoldiers.com/cucv/6748-whats-part-called.html
http://www.steelsoldiers.com/cucv/33767-m1009-vacuum-lines.html
The TM 9-2320-289-20 tells you how to adjust the Vacuum Valve, but you need the special tool J-33043. I found it in the internet for $150.
Instructions are in the TM 9-2320-289-20, Chapter 3-21.1 page 3-64. Adjustments are made with the engine off.
Kent-Moore Tools J-33043 VACUUM GAUGE BLOCK ASSEMBLY
I found the size on another website of .646" or 323/500". I didn't have one laying around. So being the cheap Bas***d I am, I made my own...
I took a piece of wood and cut it down to size. I added the wire so I wouldn't drop it into the manifold again....
Instructions are in the TM 9-2320-289-20, Chapter 3-21.1 page 3-64. Adjustments are made with the engine off.
Here are the steps:
Before you begin, install a vacuum gauge on the vacuum pump and make sure the pump is functioning correctly. It should produce 20" of vacuum.
1. Replace bad vacuum lines
2. Loosen bolts on valve
3. Hooked up my MightVac to the bottom port
4. A vacuum gauge to the top port
5. insert block under throttle shaft per instructions, hold throttle against block
6. Apply 20" vacuum to bottom port
7. Rotate valve until you have 8" of vacuum at top port.
8. Tight bolts and put everything back where it belongs
(The vacumm pump hose to the bottom port, transmission line to the top
port)
9. Take it for a test drive
If your valve is bad you will not find it at the usual parts houses. I have seen them at some of the Military Supply Houses and they run ~$90.
From the TM 9-2320-289-20p parts manual Figure 10 , Item #10 the GM part number is 14057219. Sometimes you can find them at the dealership or online.
Another item off of the check list.
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