For this instance first you have two options, first, you want to travel with your bike (item booking) or you want to parcel it (parcel booking) and catch it up at destination.
If you choose option one, first you have to visit to parcel booking office prior 48 hours of your journey date and take 2 sets of photo copy of R. C., D. L., Ticket (in which train you travelling), Photo ID Proof of yourself and carry original of all these papers also. Remove full petrol from your vehicle and pack your vehicle yourself (you can find people for this work at parcel office). They can check all the papers and weight it and they give you receipt (only by...
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this receipt you can take your vehicle). On journey day reach station before departure time of your train approx. 1 hour and enquire about your parcel, has it reached at platform and also see they are loading your parcel on train or not (in some cases they are forgotten to load) and when you deboard from train check unloading of your vehicle and wait for some time and visit to destined parcel office give receipt and collect your vehicle.
For second option, also you have to visit parcel office and carry 2 set of photo copy of R. C., D. L., Photo ID Proof of yourself and carry original of all these papers also. Remove full petrol from your vehicle and pack your vehicle yourself (you can find people for this work at parcel office). They can check all the papers and weight it and they give you receipt (only by this receipt you can take your vehicle). They will give you date and time when they will parcel it. On date when the parcel reached destination go to parcel office and give them receipt and take your vehicle.