ZF Hurth 220A Oil change questions

For those of you who have this transmission, do you drain the oil through the dipstick hole or is there a drain plug and, if there is, where is it located? I see two largish hex plugs on the bottom of the aft part of the transmission. Is one of these for draining oil? I have been draining through the dipstick, which is a pain, but I'd like to rig up a permanent oil drain hose arrangement as is on our main engine (Cummins 6BTA) and on our Westerbeke 5.0kw BCDB generator.

Also, is there an oil filter on the ZF 220A? I don't see one and I don't think that there is one, but I want to be sure I am not overlooking a maintenance item.

Lowest plug centered under shaft coupling is drain. Plug to the port side hides a metallic strainer.

Just found this useful info on a Perkins site. Seems to answer my questions.

"How to renew the lubricating oil of the ZF IRM 220A reverse gearbox".

It appears that there may indeed be a cleanable filter. Will have to check next time I go to the (now winterized and stored) boat if there is one on our trans.

dwhatty said:

Just found this useful info on a Perkins site. Seems to answer my questions.

"How to renew the lubricating oil of the ZF IRM 220A reverse gearbox".

Click to expand...

Apparently, one needs "permission" to view that link.

rwidman said:

Apparently, one needs "permission" to view that link.

Click to expand...

Hmm. Try it again please. Not used to google drive. Changed permission to general public, I think.

Thanks

Thanks DWHatty! I've got this transmission on my Mainship 390 and I've been looking for this document. -Norm

I sure wish there were a remote line for this. Mine is way too low in the bilge to get a container under it.