Truck Repair: 4 cyl cumins diesel, aftercooler, o clock

Question
Where are the timing marks located on the crank cam and injector pump.

Answer
There is a 0 on the crank & 00 on the camgear that line up(hint:both crank & cam gear keyways will be at 12 o-clock).The fuel pump gear has letters for correct timing depending on what type fuel pump & engine size.The Bosch pumps have a mark on the fuel pump that lines up with the key way for #1.Tell me what engine & pump you have & I will get correct letter if you cant figure it out.  ie 4BTA(Turbo,Aftercooler),4BT(Turbocharged),4B(naturally aspirated)