2H vacuum pump - oil leak from vacuum line?

[FJ603]

I’m looking to see if there is anyone out there familiar with the 2H vacuum pump setup up. Particularly in an 83 HJ60 Sahara. I have not come across anything that shows the system in detail, only diagrams of the pump. I am interested in the system because it seems I am having issues with it at the moment.
On a recent drive, I pulled over to check under the hood as I felt the power steering had failed to find that the power steering belt had let go. While investigating I noticed the belt must have exited through the passenger side wheel well busting through the shroud. That is when I noticed oil covering the wheel well inside the engine bay coming from a series of hoses that originated from the alternator.

It would appear that oil was leaking from one of the 2 hoses after what looks to be valve of some sort coming from the vacuum line.
when I get time this weekend, I will replace these hoses, along with the putting on a new power steering belt and possibly idler pulley bearings.
I guess I am looking for input on the vacuum system and whether oil should be in those hoses past the pump, if the line failing could have anything to do with the power steering belt failing, and (if oil shouldn’t be in those lines past the vacuum pump) would I need to replace/clean out the lines and would that mean that the vacuum pump failed and needs to be replaced/rebuilt?
Any help is appreciated!

 

[Eurasiaoverland]

Looks like engine oil coming out so it's not brake fluid getting sucked out of the brake/clutch booster.

There should be an output port/nipple on the vacuum pump with a non-return valve. I would pull the hose off the pump and see if the valve is damaged though you'll probably need to remove it to test it. Are you still getting good vacuum?

That said, I'm a bit concerned by the wet oil mark on the high pressure oil hose above. Maybe it's just perspective but it looks like that black thing (which looks to be some aftermarket accessory) might be rubbing the hose. If that hose is weeping, perhaps it has just dripped onto the 3-way vacuum junction. I would however expect to see more oil on that high pressure hose if this was the cause.

The hoses are likely past their best if they are original, but there should not be oil in them so they are not the cause of the problem.

 

[FJ603]

Looks like engine oil coming out so it's not brake fluid getting sucked out of the brake/clutch booster.

There should be an output port/nipple on the vacuum pump with a non-return valve. I would pull the hose off the pump and see if the valve is damaged though you'll probably need to remove it to test it. Are you still getting good vacuum?
View attachment 3892038

That said, I'm a bit concerned by the wet oil mark on the high pressure oil hose above. Maybe it's just perspective but it looks like that black thing (which looks to be some aftermarket accessory) might be rubbing the hose. If that hose is weeping, perhaps it has just dripped onto the 3-way vacuum junction. I would however expect to see more oil on that high pressure hose if this was the cause.

The hoses are likely past their best if they are original, but there should not be oil in them so they are not the cause of the problem.

Thanks. I will check that high pressure hose. Also, will remove the hose coming off the vacuum pump and the two coming off the junction.
Should I then start her up to see if there is oil coming out the vacuum line at that point? The oil feed and return line seem fine, though ancient.

 

[FJ603]

I took out the air on-board air compressor (aftermarket accessory) so there was more space to work with. The hose I thought you were referring to as the high pressure oil hose appears to be part of the AC .

I removed the hose coming off the pump, the junction, and the two hoses coming off of the junction into the reservoir and cleaned up the area a bit. The hoses were oil soaked but there didn’t see. To be any oil that got into the hose or the union as they seemed clear with a flashlight inspection. I then started the rig and the vacuum pump began creating suction. I am confused as to where the oil could come from.