red hot gearbox
Hi folks, I need a bit of help with a PRM150 gearbox fitted to a four year old 45hp Shire with over 5,000 hours on the clock,
Last year coming up the Trent against the tide I lost the drive due to the gearbox overheating, it got that hot some of the paint fell off the gear box casing, I got the boat moored up and changed the oil over night and managed to finish the journey with one more overheat, I have fitted a temperature gauge to the box now and on a short trip today found that it started to over heat ( up to 100 before I slowed down) , the engine temperature reads 80 on a run with no over heat problem so the only thing I can come up with is a blocked oil cooler could it be the tubes inside have got furred up?.
The gear box is working fine even though it got so hot the first time round