Thread: My baby is sick

Originally Posted by LandyAndy

My Volvo Grader is ill.
She has been loosing coolant for some time.
They replaced the radiator cap,SAME.
Just had a service done,crack in header tank,replaced,SAME.
The return feed from the head to the header tank is flowing aerated coolant.
The header tank fills to completely full whilst running then drains back to below the low level on shut down,coolant returns on startup.
I think we have an exhaust gas in the coolant issue
No complaints about the dealer,CJD.They are great to deal with,still under warranty,2700hrs done.They are sending a mechanic back down in the morning to investigate.
WE HAVE LOTS OF ISSUES WITH OTHER EQUIPMENT SUPPLIERS DOING ANY WORK,NEXT WEEK OR THE WEEK AFTER IF POSSIBLE!!!
Andrew

Hmmm, does sound like a coolant/ combustion gas issue Good to hear they are looking after the client
...poor baby!
(I havent yet formed an emotional attachment to any of my hoists, but theres still time... But the Rangie! Don't get me started about her )

JC

Hey Justin
I really enjoy steering my BABY
The boss was away for 3 weeks,and I put one of our chilren at work on to learn whilst he was away as I was doing his job.
AFTER 3 WEEKS I WAS MORE THAN HAPPY TO STEER HER AGAIN
Andrew

its amazing what lengths some of us guys will go to,just to have a few slack days

wet or dry sleeve engine?
cheers
blaze

If it is not overheating, there could be a leak on the inlet side of the water pump, sucking air into the system.
The air then gets hot & expands, makes lots of bubbles and blows coolant out the top tank.... Just a thought.

Originally Posted by Davy

If it is not overheating, there could be a leak on the inlet side of the water pump, sucking air into the system.
The air then gets hot & expands, makes lots of bubbles and blows coolant out the top tank.... Just a thought.

i'd say its not that considering the coolant returns to the header tank as if by magic when you start it up in the morning.....

Sorry to hear about the break down mate !









Do you wear a bowls hat and sunglasses while driving it .

andy, any idea what boost pressure the graders motor runs?

i'm guessing there may be a small issue with porosity in a cylinder head, boost pressure forces a certain amount of coolant outbefore pressure possibly equalises between inlet charge pressure and coolant pressure, header tank fills up, then before the engine cools down when the engine is shut down and theres no boost, the air pocket in the water jacket slowly leaks back into the inlet tract, with either the pressure dropping off so the coolant isnt forced into the inlet tract, or not all the air is forced back out......

just a random thought tho.....