snocat_trf
Recruit
- Joined
- Jun 21, 2008
- Messages
- 5
I have an older (1975 Crestliner Crusader) with an OMC stringer drive that I picked up a while back and have got quite a bit of use out of. A couple years ago though I had a seal go out in the upper gearcase and melted the gears and destroyed a few parts and shafts. I have since rebuilt the upper and have it working great, the problem is in the lift mechanism the tilts the lower unit out of the water.
If anyone is familiar with the stringer setup, it uses a reversible 12v motor that spins a worm gear to a gearbox with a clutch in it and that drives a segment gear to tilt the lower unit.
The problem lies with the motor. I had one go out about 8 years ago and I replaced it with an oem replacement which is a prestolite. After I corrected the upper problems, I had it sitting in the driveway and was unable to tilt it up. The motor just seems like it doesn?t have enough torque to run in the up direction. If I keep throwing the switch, it will eventually get it lifted. To go in the down direction, it works just fine. I replaced the lift motor with an aftermarket and it does the same thing. The thermal overload (looks like a mini set of points) does have some arcing between them, when I run the motor in the up position it keeps tripping this thermal overload.
The motors both work in an unloaded condition with the tension taken off the clutch in the lift assy.
What is the thickness of the gasket between the motor and the intermediate housing?
I did remove the ?red blob? fuse and replace it with an inline spade plug in 50A fuse, should I go with a 100A?
I took the clutch pack assy apart and cleaned the plates and oiled them and put them back together, I have another one that does not have the adjustment screw and it does not have enough tension to hold the lower unit up. Do the Bellville washers need to be opposed?
I have also gone as far as replace all the solenoids as well.
Has anyone had any experience with these or knows what the problem might be I would appreciate it as the fishing season is flying by me and would like to get this boat on the water.
I have posted this on the OMC and marine engine boards and haven?t got any real help.
If anyone is familiar with the stringer setup, it uses a reversible 12v motor that spins a worm gear to a gearbox with a clutch in it and that drives a segment gear to tilt the lower unit.
The problem lies with the motor. I had one go out about 8 years ago and I replaced it with an oem replacement which is a prestolite. After I corrected the upper problems, I had it sitting in the driveway and was unable to tilt it up. The motor just seems like it doesn?t have enough torque to run in the up direction. If I keep throwing the switch, it will eventually get it lifted. To go in the down direction, it works just fine. I replaced the lift motor with an aftermarket and it does the same thing. The thermal overload (looks like a mini set of points) does have some arcing between them, when I run the motor in the up position it keeps tripping this thermal overload.
The motors both work in an unloaded condition with the tension taken off the clutch in the lift assy.
What is the thickness of the gasket between the motor and the intermediate housing?
I did remove the ?red blob? fuse and replace it with an inline spade plug in 50A fuse, should I go with a 100A?
I took the clutch pack assy apart and cleaned the plates and oiled them and put them back together, I have another one that does not have the adjustment screw and it does not have enough tension to hold the lower unit up. Do the Bellville washers need to be opposed?
I have also gone as far as replace all the solenoids as well.
Has anyone had any experience with these or knows what the problem might be I would appreciate it as the fishing season is flying by me and would like to get this boat on the water.
I have posted this on the OMC and marine engine boards and haven?t got any real help.