[Mike Gurr]

The help available from this forum never fails to amaze me. Jordan, well spotted and many thanks. Ron - yes will do and Hanno, I don't know about standardisation as every Carrier seems to be slightly different. A friend of mine has a carrier same mark as mine and only 3 months apart from mine in build date but has various differences. His has a bypass oil filter which mine does not, each Carrier has different fire extinguisher brackets etc etc whether they started life the same and have had changes to some parts since is most likely or maybe the parts fitted did vary from month to month even when new. so far as anecdotal evidence has it the crankcase air filter has always been on my carrier but who knows as that 'evidence' certainly does not go back all the way to 1944. Variety is the spice of life!!