So I installed a HD powersteering pump, inline filter and cooler.
Was the cooler a new installation (i.e. a modification to the stock system) or did you just replace what was already there?
If it was a modification where did you insert it? Not where it's physically mounted. But rather, it's location in a schematic sense?
Here is an image showing the proper plumbing and flow directions of a PS/hydroboost set-up with a cooler and filter:
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And here is the bleeding procedure for a complete new installation of a P/S pump, cooler and filter (ignore the steps that don't apply to diesels). Note the trick at the bottom.
BTW: I do the bleeding like Bucket suggests - with the front end raised off the floor:
Bleeding the Hydraulic System
1. Fill the power steering pump reservoir to the top.
WARNING: DO NOT START THE ENGINE AT THIS TIME!
2. Remove the coil wire and crank the engine for several revolutions..
3. Turn wheels from stop to stop TWICE
4. Check the fluid level in the reservoir and add if necessary.
5. Repeat Steps 2 and 3 until fluid level does not drop.
6. Replace coil wire and start engine.
7. Turn off engine and depress brake pedal 4 or 5 times to relieve accumulator pressure.
8. Check fluid level and add as necessary.
9. Start engine and turn wheels from stop to stop.
10. Turn off engine and depress brake pedal 4 or 5 times to relieve accumulator pressure.
11. Check fluid level and add as necessary.
WARNING: IF AT ANY TIME THE PUMP GROWLS OR FOAMING OCCURS IN THE FLUID, TURN OFF ENGINE, WAIT FOR 1 HOUR AND CHECK FLUID LEVEL ADDING AS NECESSARY.
If continued bleeding does not work, fill power steering pump reservoir to top, start engine, and watch fluid level in reservoir. On occasion, the system will draw the fluid down to a point where it is sucking air. If this happens, install a piece of clean new 1 1/2” diameter x 12” - 18” long radiator hose to the neck of the power steering pump reservoir with a hose clamp. Fill the hose about half full, and restart the engine. The hose will in essence increase the capacity of the reservoir and keep the system from taking on air. After all the air is bled out of the system, remove the hose.
