The D40S, dependent on serial number, could share many similar parts to the Cat V80E model. If you have specific questions contact me [email address removed] Daewoo did not build the V80E, it was built in the UK, but Daewoo built a similar model for Korea and Asian markets.
Daewo was once building Cat forklifts, today's trucks are no longer built to Cat spec, there is no Cat who's the D40S !