Yes you might be lucky and it is something simple. I have a wide D6 4R that uses the same drive train but has a different engine. The flange on the input shaft into the gearbox is welded to the shaft and has broken several times on mine necessitating the removal and disassembly of the gearbox.Has never happened on the 5R machines so I assume it is caused by greater load due to the wide tracks.
Fiber links on the main clutch are also problematic especially if the engine is not aligned correctly.
Have had brake bands snap due to corrosion.
Not sure about the D318 but you can turn the D4600 using the fan if the belt is tight enough if not you can turn it over with a lever in the clutch.
Thank you Phil, that's all very useful information to have. Gives me a few places to start.
I might do some research on the D318 engine.
A D4600 has a nut on the crankshaft accessible under the radiator (1 3/4” if I recall). You can get a socket with extension on it and try to turn it over that way. Not sure if the D318 has the same set up.
Hi, LangdonStevenson..
Try the gentler ways first, pressing hard on the fan belt while trying to turn the fan both ways, trying to gently bar the flywheel over or - if there is a nut on the crankshaft pulley - trying to turn that with a socket and bar. You really ned to rotate it a full revolution to be sure that it is fully free.
Make sure you have the decompressor in the Start position so that you are not battling compression. (I.D.10T. mistake.)
Just my 0.02.
The D318 also has a nut on the crankshaft but it's bigger.....2-3/8" if I'm remembering correctly.
pictures would help
yes we had a 3cyl ruston diesel that was in the local councils first excavator. this thing was that old it was cable operated and could be a dragline or excavator depending how it was setup.
you could wind it over with the crank handle till the decompressor was released then she would stop you and then try and dislocate your shoulder as it rolled back from compression
This machine if it is hydraulic will have the drive for the hydraulic pump mounted to the crankshaft pulley so you won't be able to access the nut. Similarly if it had a front PCU/CCU it would not be accessible
The D4600 has a nut with spurs on it for a crank handle. The La Plante Choate hydraulic pump has a cap on it that you can remove to fit a crank handle.
Hi, LangdonStevenson..
Try the gentler ways first, pressing hard on the fan belt while trying to turn the fan both ways, trying to gently bar the flywheel over or - if there is a nut on the crankshaft pulley - trying to turn that with a socket and bar. You really ned to rotate it a full revolution to be sure that it is fully free.
Make sure you have the decompressor in the Start position so that you are not battling compression. (I.D.10T. mistake.)
Just my 0.02.
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