The Commodore

Got back to the boat today and got pictures, unfortunately have no clue how to get them on here, I did find a data badge on the motor and identified it as a Denison M6 1" with a smaller badge indicating its "Dual rotation", does that help ? is it serviceable by myself ?

Not a drop in 18mts. I have done as you suggest the last time this happened and not a sign of a leak. It is very frustrating knowing that there is an issue and having to always carry the hydraulic fluid in wait for the next time.

Thanks for that Tony, not at boat so can't do pictures, it is a broads bounty carribean with the 3.8 BMC,there are 3 hoses, 2 large 1 small. Are these pump a servicable item, is the shaft seal a diy job ?

Thanks for that murflynn but nothing like that visible, could this PRV be built into the motor and there be just an outlet.

I would know what a PRV looks like on a heating system but that type of device is definetly not on my system, could someone link me to what a prv on a hydraulic system would look like ?

Hi Martin, I can see nothing like a valve anywhere on the system.

Hi All, I have a BMC engine that drives a hydraulic pump that goes onto power an hydraulic motor that drives the prop. The issue i have is that on 3 occasions over the past few years i have lost drive and on inspection found that i had lost all (2 gallons) the hydraulic fluid into the bilge, its obviously happening at the motor as its in a seperate bulkhead and thats where the fluid collects, hoses and connections fine and no sign of leakage on motor, i refill system and everything is fine until it happens again, 18months since last dump. Any thoughts please.

Well in frustration and with nothing to loose i went at this myself, i firstly noticed that a touch on the fan blades of the blower fan would see the heater roar into action, brushes!, after a murderouse time in getting the blower motor apart (combustion fan removal) sure enough, brushes were knackered, made up a set from a set of washing machine brushes sanded down with a sheet of 400grit paper, decide to replace bearings whilst there, 626zz bearings, all back together and awaiting refit. I think the error code E33 that indicates an issue with fan speed pointed me in the write direction, great job in the diognostics on these controlers.

i believe initially it was from an ambulance.

Ok, so I fitted the 801 and cleared the faults ( 12 / 33 )and away it went, for around 20 minutes, then again it cuts out with a e52- safety time exceeded ? heater seems to be running normally but starts to slow down too soon, but I notice that the pump is still running full belt, then it stops.

Many thank.

Will PM you, and I will take that advice i have sorced a 801 on ebay. If i fitted the 801 now would it give me the dianosis of this fault.

A stab may help, please.

Hi NMEA, Thanks for replying. Im honestly not sure at all as the unit is used by other members of my family when im not around so im not sure how many times it has failed. It seemed to me that it last failed when the rheostat had been turned up on a couple of occasions, the stat started blinking and it all shut down, now as soon as it is switched on it just blinks, i have checked power and fuse and all good. i am prity sure this happened to me some years ago and this linked connection cured the problem, i can't be 100% sure as my brain cells are not what they used to be. Any help on this would be greatly appreciated.

Hi All , Eberspacher problem, after overheat a few times the unit has now gone to lockout, my problem is the control is a Rheostat, i have had issues in the past with lockout but had managed to find info on the net explaining how by linking across 2 conections on the Rheostats connector block it would reset the ECU, i unfortunetly did not take note of which connection it was and cannot now find the information, anyone assist me please ?