My son had a mate over today and they wouldn't leave my old truck alone... after removing the fuel pump, they decided to remove the rocker cover – then called me. I decided to keep going since they had started... looks like 2 broken rocker arms and a bent rod so far.

Since I am new to this pulling apart engine stuff, I was a bit horrified when I initially saw the pistons. But a lot of compressed air and WD40 seem to make a big difference. The 4 centre pistons now move freely but the end ones only have about 10mm of movement. (Is this a major problem?)

We kept at it till dark and I am happy so far with the results.
Does anyone know where to get rocker arms and rods? Do I just replace the broken ones or do I need more?
__________________
1942 Chevrolet C60L WO48 - (Workshop)
1944 F15A
1965 Workshop Platform Trailer, Binned ARN: 101-803
1967 Trailer, 1/2 ton AUST No 5 ARN: 154-748
1990 Perentie 6x6 ERV, ARN: 51-981