aquaskiman
New Member
Does any one have the end play or pre load of the bearing under the water pump for the drive shaft in a alpha 1 lower unit. Thanks
Alpha 1 drive shaft
- Thread starter aquaskiman
- Start date
- Nov 12, 2006
- 5,334
- Boat Info
- 1999 Sea Ray 330DA
Twin 7.4 MPI (310 propshaft HP) V-drives
- Engines
- Twin Mercury Marine marinized 7.4L L-29 V8s
Cast iron block w 4-bolt mains
Get the factory service manual. According to my manual, you need special tools to set the preload and a dial indicator with fixture to hold it. Doesn't look like the typical do-it-yourself job.
aquaskiman
New Member
I can make the tools, I have a dial indicator I just need the spec. This is an old boat and I am just getting it ready to sell, so I don’t want to buy a manual for it. It is not the one in the pic. Thanks George
- Nov 12, 2006
- 5,334
- Boat Info
- 1999 Sea Ray 330DA
Twin 7.4 MPI (310 propshaft HP) V-drives
- Engines
- Twin Mercury Marine marinized 7.4L L-29 V8s
Cast iron block w 4-bolt mains
It's several pages depending on which drive it is, IE Alpha 1, IR, MR, etc which is a lot of scanning since each drive is set differently. The preload adjusting tool is several parts, including a calibrated spring.
Which drive? Maybe I can scan the pages.
Which drive? Maybe I can scan the pages.
aquaskiman
New Member
It is a 1988 alpha one MR, I have done it before on a outboard, I think they set it up with a backlash setting from what I have seen on line. I have a friend that is going to lend me the tools if he can find them, if not I can make what I need. He can’t find his manual. Thanks George
aquaskiman
New Member
I got the info I needed Thanks Westie. George
