Friday 26 July 2013

The Bad Oil...

I'm sure gear box oil shouldn't be black!
 
 Red thing on the right? That'll be the nurse valve. Rare as stuff that is excreted by rocking horses.

After a few weeks of neglect, the on-going servicing tasks continued apace today! Predictably this involved parting with more hard-earned cash and ordering yet more oil from Morris Lubricants. The target this time was the gear box and transfer box which require AG90 rather than the EP 90 used in the differentials and steering box etc, presumably because of phospher-bronze components which don't work well with the extreme pressure (EP) additives. The main gearbox was full with new oil having been serviced last year when the clutch was changed (although it's filled with EP 90 so I will change this soon). The transfer box, however, was a different story!! The oil (EP 90) was black with an awful lot of fine sediment in. So, this was drained and bottled then replaced with new AG 90. This took ages to pour in - trying to use a straight funnel to pour two litres of thick oil into a filler hole which is vertical takes some time and patience! Anyway, another job done....

I then tried to get EP 90 into the steering box using an oil gun but this proved to be troublesome and I suspect I ended up wearing more than went into the nipple! Hey ho, a job to be completed another day!!

I then dropped the newly-acquired nurse valve into the locker. These were used when 6 inch pumping from machine to machine in the AFS days to prevent too much pressure building up in the pump. I borrowed one at Derby Fire Show but as it is useful to have one, I acquired one from a fellow owner yesterday.


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