How to find TDC 185D

I think I messed up taking the pump off without the marks in the window being lined up so now that I have it back on it won't start. Is there a way I can line up the marks, pull the pump and then set the engine on TDC?

Your best bet is to pull the injector pump off, take out no. 1 injector , clean the balancer on the front to find the timing numbers ; then put a 1 5-16 wrench on the front crank bolt and slowly turn over the motor, you will be able to feel air come out of the injector hole on the no. 1 compression stroke ; I use a 6011 electrode to find exactly TDC , when the electrode starts back down ; stop; now look for the numbers on the balancer they should be close ; if the numbers are on the back side of the balancer ; turn it over to get the numbers to the front or to the notch or pin on the timing gear cover ; 185,s are at 24 deg. TDC ; ON THE INJECTOR PUMP SHAFT MAKE SURE THE DOT matches the dot inside the pump - on top or bottom- you can slide the pump on or I take the shaft out of the timing gear slide it in, then put it back on the gear ; if your on 24,and the dots are right , you should be really close on the pump timing marks , just turn the pump to get perfect ; theres no use to try to start it if the timings off, your wasting time, fuel, and prolly either,  when you get it on , crack the lines at the bottom of the injectors , get fuel there, tighten them up a she should start ; Good luck !!

I'll really show my lack of knowledge here but when Doug is talking about the balancer what am I looking for where?

Look at the inj pump drive shaft....it has a "dot" on one side of the flat tang. Look inside the inj pump...it also has a "dot" on one side of the socket for the drive tang to engage in. Rotate the pump with a big flat blade screwdriver to make it line up with the pump driveshaft....it has to be "dot" to "dot" or you'll be 180 degrees off. TDC isn't what you look for anyway....pump would be timed at  anywhere from 18 to 24 degrees BTDC depending on what pump p/n it is.