Volvo MD2010B woes

[Duster]

I'm advise this place is the fount of all knowhow relating to an elderly MD2010B....

Advice, please?

(A) I need to remove the raw water pump to renew the seals. Four hex bolts, one head rusted. Is the inner end of the shaft threaded or slit? How best does one remove it?

(B) I have an oil leak from the sump pan somewhere. Access for inspection and remedy is proving v. difficult, due to the positioning of the runs of 2 raw water 'inward' and 'return' rubber hoses blocking access under the front/central. Shaft drive, not 'leg'.

These 2 hoses seem to meet at the rear/lower block ( according to diagrams ) but it is not clear what function is served by them being connected there. Could I disconnect them from back there and join them together in front of the engine, routing straight from the nearby strainer to the raw water pump on the front/high of the engine? That would give me clearer access underneath the sump, for inspection by mirror/hand/endoscope.

 

[Tranona]

REmoval of the water pump is straight forward except that the inside bolt is very difficult to access and you will probably need a jointed socket to get at it. Once you have the bolts out it just slides out of the front. It is gear driven. You can get an overhaul kit from Keyparts.

Can't envisage your issue with hoses - a photo would help. Thee leakage from the sump could be anywhere, but the simple things to check are the dipstick tube and the second pump out tube on the side of the block.

BTW these engines are usually fitted in yachts and you will find better response to questions on the PBO forum.

 

[Duster]

OK, thanks. Will do.

 

[VicS]

I'm advise this place is the fount of all knowhow relating to an elderly MD2010B....

Advice, please?

(A) I need to remove the raw water pump to renew the seals. Four hex bolts, one head rusted. Is the inner end of the shaft threaded or slit? How best does one remove it?

(B) I have an oil leak from the sump pan somewhere. Access for inspection and remedy is proving v. difficult, due to the positioning of the runs of 2 raw water 'inward' and 'return' rubber hoses blocking access under the front/central. Shaft drive, not 'leg'.

These 2 hoses seem to meet at the rear/lower block ( according to diagrams ) but it is not clear what function is served by them being connected there. Could I disconnect them from back there and join them together in front of the engine, routing straight from the nearby strainer to the raw water pump on the front/high of the engine? That would give me clearer access underneath the sump, for inspection by mirror/hand/endoscope.

The hoses sound like the cooling water to and from the gearbox cooler. One from the inlet seacock and strainer to the gearbox , the other returning to the seawater pump. However, I cannot find a diagram in which they are described as "inward" and "return"
If they are actually joined then someone has bypassed the gearbox cooler!