06 2.5T V70 oil trap drain fitting orientation

[ogatrulle]

I'm replacing my PCV components and forgot to note the orientation of the stubby (1-inch) fitting that goes between the oil trap drain and the crankcase (this is part 8653339). There is a plastic flange on one end.

fitting.jpg (5.86 KiB) Viewed 1530 times

VIDA shows the flange toward the crankcase, but that diagram also seems to show the upper hose connections wrongly reversed. Various videos show the flange toward the oil trap.

There seems to be a "stop" inside the fitting that prevents it from being pushed all the way onto the oil trap in one direction but not the other (I am installing genuine Volvo parts).

Anyone remember which way it goes?

Thanks!

[ogatrulle]

Oh, lawd, I didn't realize this was already a hot topic.

viewtopic.php?f=9&t=82097&hilit=etm+harness#p445155

[abscate]

I decided I wanted the metal edge away from the plastic PCV box, so I put metal towards the engine block.

When I to ok it off I didn't even have the metal part, I had a short piece of hose with two hose clamps

[precopster]

I decided I wanted the metal edge away from the plastic PCV box, so I put metal towards the engine block.

When I to ok it off I didn't even have the metal part, I had a short piece of hose with two hose clamps

That's the superseded part. I always aim the rubber end toward the PCV box. To aid fitting I put a light film of engine oil on the inside of the tube.

[abscate]

Just to stir the pot, we have found references in Volvo literature for both ways, as well as unmolested cars bring serviced for the first time with this part installed both ways

[Georgeandkira]

Two clamps on a short thing like that? Are they narrow?

[jimmy57]

If you put the coupler on block first then rubber ridge out. If you put the coupler on box first then again rubber ridge out. The rubber ridge facilitates a straight in slide fit. The other end is tougher to start for a straight in slide fit. The abrupt end can be wiggled to fit onto the the first place it is installed. When you install box to block you don't have a ready way to wiggle it around so it could slide into the abrupt end so the rubber end allows easier insertion start. As mentioned use oil to aid the process.

[precopster]

Two clamps on a short thing like that? Are they narrow?

As I previously mentioned Abscate refers to the superseded part which has no metal and is just a tube of rubber with T25 clamps at either end. They are narrow clamps.

[ogatrulle]

Thanks for all the good discussion. I got the PCV system back together yesterday (first time I did this job!). New volvo everything. Also oetiker clamps everywhere. It was a right bas**** getting the pliers onto the clips at the PTC nipple and the thermostat nipple (for the PCV hose coolant). Maybe there is a low-profile clamp pinch tool for narrow spaces - I'll have to look online.

I did not have too much difficulty making the other hose attachments. I think the order of operations make all the difference. First I did the oil drain fitting and the crankcase elbow hose along with the oil trap (2 clamps + 2 screws). That left the two nipples on top of the oil trap.

Next was the heated PCV hose hollow bolt/banjo fitting at the left end of the block (opposite side from the timing belt). This fitting is for coolant so I cleaned and reused the existing hollow bolt, which had no internal valve or other parts. It did not have any noticeable accumulation inside. New metal gasket washers of course.

I made a small cut to the new IM gasket at the lower bolt hole next to the thermostat because that bolt hit the thermostat housing before I could back it out all the way. Cut was straight down from the screw hole, away from the bore.

Then I maneuvered the intake manifold into the neighborhood, but did not attach to the block yet. I torqued the new 2014-stamped hollow bolt and the banjo fitting for manifold vacuum at the IM hole at the right front underside of the IM, being careful to align the outboard arm of the coolant "L" parallel to the nose-to-tail axis of the vehicle. Since the IM was not attached, it was easy to get a torque wrench onto this bolt.

Then I clamped the heated PCV hose and the curvy upper hose (that goes up next to the oil filler cap) to the oil trap. There was just enough room to get the clamp pliers in there, and I could still move the IM around a bit. At this point, I still had not attached the coolant hose part of the heated PCV hose to the nipple next to the thermostat.

I think I made a mistake by attaching the IM before clamping the coolant part of the PCV hose, because I had to use a whole bunch of swear words to get the clamp pliers into position (and that was with the steering pump and alternator unbolted).

Finally I got to the PTC nipple and futzed with the clamp/pliers and swore a bunch but finally got the clamp pinched.

The good news is that I now have good suction at the oil cap, and no more smoke from the dipstick hole.

Now I can drive it around while I work out the remaining issues: needs new ignition key cylinder, rear hatch latch (won't open, dunno how I'll get that apart), fuel door hinge (quickie 25-cent cable clamp fix described elsewhere), upper engine mount (Boy will do this one under my watchful eye). AND, joy, I noticed hard 1-2 shifts both up and down after I drove it for a while today. I'm praying that having the battery disconnected for a month caused the tran to lose its mind and that it will automatically relearn as I drive, but maybe that's unrealistic.