The bleed pipe is a small dia pipe under the passenger seat.
It starts near the alternator (a favourite area for chafing) and loops around via a clip to near the passenger door where there should be some sort of plug/bung in the end.
To bleed, with engine running, pour water/coolant into expansion tank whilst holding the open end of the bleed pipe above the level of the expansion tank.
Lower end of bleed pipe until water/coolant comes out . If there are bubbles then keep pouring in water/coolant until bubbles stop. You can raise/lower (see-saw) the end of the bleed pipe to stop water coming out.
Make sure your aircon is on (both front and rear)
Check your rad is full by removing/replacing the rad cap (not when the engine is hot and not with the expansion cap in place...system not pressurised).
When all is clear of bubbles...replace all the caps/bungs and go for a run to warm the engine up properly so that the thermostat opens (11 o'clock on the temp guage and bottom hose should get warm ...not hot)
Shut down engine and recheck levels.
Start engine and check every hose you can find.
Check for drips under van.
Be awasre that if you've had the aircon on, then there may be some water drips as the condensed water on the heater matrix melts. Shouldn't be very much.
Good luck
H
If you would like to talk it through, PM me with your phone number (preferably mobile so you can be by your bongo)..I'll phone you when I'm free.
