I have only one set of jacks (nose-main LH and RH) and I need to swap the main landing gear from one aircraft to another. I don't have a dummy landing gear. Is this possible?
If the maintenance manual says to use two main gear jacks, then use two main gear jacks. Using anything other than that makes you liable for any injuries or damage to equipment. Don’t let your lead push you around. Tell him to pound salt or get you another jack. Guys who cave to pressure like this make it tough for every other mechanic in the world who try to do things right. All we hear the rest of our careers are from guys who did things wrong and say, “Well, at ‘X’ airlines we didn’t have problems doing it this way.”
Furthermore, by not doing it right this time, you set the precedent to do everything else wrong every time. It’s like blackmail. “Boss, I don’t feel comfortable changing the engine with a 2x4 and a fishing pole.” Their response? “Remember when you did the lopsided gear change? You didn’t have any problems then, did you?”
Do it right or go find a job where shoddy workmanship won’t get people killed.