I have a MH 33 diesel with an American Bosch PSB injection pump. Does anybody know if when the marked gear tooth lines up with the "0" mark on the pump housing (this is necessary to remove/install pump head), the timing line on the pump hub (viewable through the timing window) should line up with the timing pointer? According to instructions in past posts on this forum, sometimes the marked gear is supposed to line up with the "0" when the timing line is lined up with the pointer, and sometimes it's supossed to be one gear tooth off. (I found the pump adjusted one tooth off.)
I've got the pump reassembled so both lines line-up at the same time and the engine runs OK, but I'm thinking that maybe intead of running 24 BTDC, I'm running closer to 30 BTDC.
I've seen recommendations to do it both ways in past posts on this forum. Maybe it depends on the engine?
Then again, if somebody can tell me how to adjust the timing by looking at the exhaust and monitoring the rpm, I'll just do it that way and call it good enough.
I've got the pump reassembled so both lines line-up at the same time and the engine runs OK, but I'm thinking that maybe intead of running 24 BTDC, I'm running closer to 30 BTDC.
I've seen recommendations to do it both ways in past posts on this forum. Maybe it depends on the engine?
Then again, if somebody can tell me how to adjust the timing by looking at the exhaust and monitoring the rpm, I'll just do it that way and call it good enough.