Working on a 91 Accord with 170K miles. I've replaced the front balance shaft seal, crank seal, and cam seal when I did a timing belt replacement over the weekend. The car was leaking oil before I did this project and I could not identify where the oil was coming from. I didn't replace the rear balance shaft seal which was probably a mistake.

I've got to open it back up again now to find where it's leaking from. Is # 8 my next possible source if all the other seals that I replaced are fine? Is it pretty straight forward on removing that gear assembly to get to that #8 seal above?

Appreciate any advice and guidance.

 

it is a good idea to replace the "balance shaft o-ring," stinks that you have to go back in to do it though..

anyway, be sure to make use of the alignment plug on the back of the block. remove it and insert a long narrow bolt or pin punch (anything around 4mm in diameter should do) to hold the shaft steady while you have the housing and drive gear off.

keep in mind that the gear set is helical so the pulley will turn slightly as you remove it from the block (...technically from the oil pump ) it can sometimes be tricky to get it back on in line with the timing mark.

other than that, once the timing cover is off and the belt is removed, it's two bolts and a nut (12mm) and no need to apply any sealant as i've seen some folks do. the o-ring does the job fine.

 

Thanks for the reply. I followed a Haynes manual the first go around. I think I can get back in there in fewer steps on the next go around.

Appreciate the tip on the helical gear. I'll take extra note of it's position as I remove.