|Gray Marine Transmission parts 1954 era
Post Number: 2
|Posted on Monday, June 29, 2009 - 07:34 pm: ||
Why will my 1954 Gray Phantom 6-112 not go into reverse? The boat was idle for 16 years prior to restoration. Has it locked up? Do I need to replace discs?
Post Number: 40
|Posted on Monday, June 29, 2009 - 10:46 pm: ||
It is possible that the paper coated disks are stuck to the plain disks but you have to check something’s first. If the transmission is a Paragon I can almost bet that the transmission is far out of adjustment. There are two adjustments that have to be made, one for forward and one for reverse. Take the cover off and see if the shifting lever, shafts etc. in place. Second, With the transmission in a neutral position rotate the output shaft until you find a 5/8 bolt that goes into the disk housing. Loosen the bolt until you can turn the housing. Turn the housing counterclockwise to remove the pressure on the disks. Do not drop the bolt. You can take it out completely as insurance. This should remove the pressure and begin to give some movement to the lever. Using the bolt as a guide, rotate the disk housing clockwise to apply pressure to the disks. The reverse adjustment is on top of the disk housing and is usually 7/8 nut. Although I have seen it where the adjustment is done by lengthening a clevis rod on the right side above the disk housing. You have to adjust each separately. The book calls for about 22 ft pounds of pressure at the end of a 2 ft lever in both directions. When the transmission is adjusted correctly you should feel the transmission drop into a detent in both directions. This is just a course adjustment, as the final adjustment should be done when the boat is in the water and running. There shouldn’t be any slippage when power is applied in either direction. Don’t forget to tighten everything back up prior to closing the cover. I can’t help you if the transmission is a hydraulic as I don’t have a lot of knowledge about the proceedure. If all else fails contact a marina as that tranmission has been around a long time and is still used in new boats.