Not surprising it's ZF4HP gearboxes de bendies mah.
Nope. If im not wrong they belonged to the same batch of Habits,
the Batch 1s, but excluding the Voith batch 1s. Thats because ALL
Voith habit comes as same system as the ZF 2nd batch habits. The
batch 1 ZFs might have a slight difference in its fuel system. PM
me if you are more interested in this details, i can tell you more,
but i cant guarantee that info is 100% correct.
The investigation report of 1110S stated that its fuel system
has a leakage. The diesel caught fire and that sparked off the
blaze. TIB541M has fuel injector leakage before. During its repair
the mechanic mentioned that the entire floor cover is covered in
diesel. Thankfully it didnt catch fire. This info was passed to me
by a BC after i told him that his bus stank of fuel vapour.
There are some Habits the enterior stank with smelly fuel vapour
as well.