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Old 08-23-2008, 04:11 PM   eBay Motors   #1 (permalink)
Hook'em_Horns!
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Power Steering/Hydro-Boost Flush

Today, I serviced the PS/HB system with a flush; I took some pictures and thought I’d share my procedure I do regularly to prolong the life of the PS and HB units and keep them functioning properly.

ITEMS NEEDED:

Drain pan
Large channel-lock pliers
5-6’ of 5/16” Fuel Line Hose
Scrap piece of 1x6
Small funnel
2-3 quarts p/s fluid, Just buy a Gallon Jug, it's cheaper.

I'm experimenting with synthetic Dex-VI, but plain PS fluid is fine. I pull heavy in bad traffic and experience higher heat levels than the average user. Looking for a synthetic PS fluid has proven to be an elusive endeavour.



Here we have the culprit at hand,



Compressing the spring clamp,



turn the hose left and right to break the seal, then pull back off the nipple.

CAUTION: in the picture below, you’ll see the curved metal brace coming from the cowl. I STRONGLY recommend you place a rag, towel, blanket, or some kind of cushion here.




When giving the final pull, the release/recoil will have the underside of your wrist striking this, with potential gashes and blood on your truck, resulting in you cussing me later. I pull mine regularly and it comes off much easier than one that's been on for 70-80k miles.

Using the spring clamp, I secure the drain hose at the HB unit




and lay the board to hold the hose in place with the drain pan in site from the Driver’s seat.



With the engine running and in Park, SLOWLY depress the brake pedal till it feels firm at the bottom and hold, turn the steering wheel from 12-3 o’clock and hold, release the pedal SLOWLY to the top, then bring the wheel back to 12 o’clock. Look down and you'll see the flow and then you can adjust your speed of press and release actions so as not to spray fluid out of the drain pan.

Here we see the old, burnt, and dirty fluid beginning to flow.





......................Continued on the next post, I'm too picture happy to conform here.
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2005 Chev Duramax/Allison 3500LS DRW Crew Cab
CAI / LMM intake OH kit, Sulastic springs, Bilsteins,
B&W 30K-Turnover GN, Putnam XDR 15K, Ride-Rite Air Springs, A/T Revos.
Pulling 10 tons daily.

2006 Chev 6.0L/4L80e 3500WT DRW Ex-Cab
9 'Flat/GN, Ride-Rite Air Springs, A/T Revos.
Pulling 6 tons daily.

"The difference between liberals and cannibals, is that cannibals eat only their enemies." -Lyndon B.Johnson 100th

Last edited by Hook'em_Horns! : 08-24-2008 at 01:32 AM.
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Old 08-23-2008, 11:37 PM   eBay Motors   #2 (permalink)
Tow Master
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Good wright up!!
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Old 08-24-2008, 12:39 AM   eBay Motors   #3 (permalink)
Hook'em_Horns!
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Part 2

Continue the same procedure alternately turning from 9 to 12 to 3 o’clock until you start to feel the steering bind a bit, usually 4-6 pedal cycles, then turn off the engine.

Grab your funnel and refill to the bottom of the neck of the PS reservoir.



Hold up the funnel so you can see the fluid level coming up and not pour fluid all over, usually about a third of a quart at a time.



Climb back in, start ‘er up, and get after it again, repeating over and over till you see the fluid start to run clear. I know it is tempting to do but, PLEASE!, don’t leave it running while you refill the PS reservoir, the danger is too great to have your Left Arm get caught and have it get D-MAXED.

Here, we see the fluid is now running clean.



Leave the drain hose connected, check the fluid level in the pump, and fill accordingly to the Cold Line. It you over fill it, just pump the pedal a few times to drain.

Remove the drain hose, wipe the nipple clean of residual fluid, and replace the Return Line using the Spring Clip.



Start ‘er up, roll forward turning the wheel and feel the new ‘Creamy Cool Whip’ resistance in your steering, and yer ‘Good to Go’.
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2005 Chev Duramax/Allison 3500LS DRW Crew Cab
CAI / LMM intake OH kit, Sulastic springs, Bilsteins,
B&W 30K-Turnover GN, Putnam XDR 15K, Ride-Rite Air Springs, A/T Revos.
Pulling 10 tons daily.

2006 Chev 6.0L/4L80e 3500WT DRW Ex-Cab
9 'Flat/GN, Ride-Rite Air Springs, A/T Revos.
Pulling 6 tons daily.

"The difference between liberals and cannibals, is that cannibals eat only their enemies." -Lyndon B.Johnson 100th

Last edited by Hook'em_Horns! : 08-24-2008 at 01:21 AM.
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Old 08-24-2008, 07:56 AM   eBay Motors   #4 (permalink)
delong_1
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thanks for the "how to" i think im going to try that today
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Old 08-24-2008, 11:53 AM   eBay Motors   #5 (permalink)
Hook'em_Horns!
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It's amazing to see the junk that comes out of the bottom of the system. You'll wonder how it ever performed in that condition.
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2005 Chev Duramax/Allison 3500LS DRW Crew Cab
CAI / LMM intake OH kit, Sulastic springs, Bilsteins,
B&W 30K-Turnover GN, Putnam XDR 15K, Ride-Rite Air Springs, A/T Revos.
Pulling 10 tons daily.

2006 Chev 6.0L/4L80e 3500WT DRW Ex-Cab
9 'Flat/GN, Ride-Rite Air Springs, A/T Revos.
Pulling 6 tons daily.

"The difference between liberals and cannibals, is that cannibals eat only their enemies." -Lyndon B.Johnson 100th
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Old 08-24-2008, 11:59 AM   eBay Motors   #6 (permalink)
daddysLBZ
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Smile That's good post..pics help too

I guess mine need it,I tow some heavy loads once a week or so.Thanks for the DIY.I will flush mine now that I know how smooth it goes...THANKS
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Old 08-24-2008, 12:02 PM   eBay Motors   #7 (permalink)
Hook'em_Horns!
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Quote:
Originally Posted by daddysLBZ View Post
I guess mine need it,I tow some heavy loads once a week or so.Thanks for the DIY.I will flush mine now that I know how smooth it goes...THANKS
Much easier to perform than coming up with $400+ for a NEW HB unit!
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2005 Chev Duramax/Allison 3500LS DRW Crew Cab
CAI / LMM intake OH kit, Sulastic springs, Bilsteins,
B&W 30K-Turnover GN, Putnam XDR 15K, Ride-Rite Air Springs, A/T Revos.
Pulling 10 tons daily.

2006 Chev 6.0L/4L80e 3500WT DRW Ex-Cab
9 'Flat/GN, Ride-Rite Air Springs, A/T Revos.
Pulling 6 tons daily.

"The difference between liberals and cannibals, is that cannibals eat only their enemies." -Lyndon B.Johnson 100th
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Old 08-24-2008, 12:09 PM   eBay Motors   #8 (permalink)
daddysLBZ
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Thumbs up Oh,don't worry...

Quote:
Originally Posted by Hook'em_Horns! View Post
Much easier to perform than coming up with $400+ for a NEW HB unit!
I'll do meself,and spend the spare $$$ on fuel!!D
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2006 GMC 2500HD 4x4{cc,sb,SLE} 90/175hp tune,nocat/muff!KB intake mod and my favorite pink thong hanging from the rear view.
Goodies waiting for installation!! LBZpowered!!
2002 GMC 1500 [2wd]5.3 power{98k}20 in. wheels waiting to be installed!!![wifey drives]
1987 Monte Carlo SS all orig!!89k.....
1978 Malibu [2 dr!!]too far in the $$$ to ever think of selling..[ZZ4 from GMPP coming in March!!]
HOT SHOT RIG:2002 GMC Yukon XL***312,674 miles***Hytech tuned,K&N cai[not my choice]...Runs like a whore in church...The left lane was meant to pass,move over or we'll run over your assss!!!P.H.inc. Hot shot 7080
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Old 08-24-2008, 12:12 PM   eBay Motors   #9 (permalink)
aggar
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NIce write up. Might have to give it a try. How many miles were on that dirty fluid??
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Old 08-24-2008, 01:00 PM   eBay Motors   #10 (permalink)
Hook'em_Horns!
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Quote:
Originally Posted by aggar View Post
NIce write up. Might have to give it a try. How many miles were on that dirty fluid??
Not sure on the miles, I don't even keep track on it anymore as my use is out of GM parameters anyway.

IIRC, under heavy use, GM suggests intervals of 20k miles. That’s a BIG guess as everyone’s definition of ‘Heavy Use’ varies as much as the Owners use varies under even more diverse conditions.

On one end is a light commuter that occasionally pulls the Bass boat out on the weekends. In between is the Owner that pulls 10k lbs, 2-3 times a week. I’m on the other end, sometimes moving 60+k lbs daily.

Add in level or hilly terrain, highway or city use, in light or heavy traffic with extended repeated heavy braking for more than an Hour, how can one pick a definitive point to schedule service?

I just look for the telltale signs of Fluid Wear for my intervals. When backing a trailer and applying the brakes while turning the wheel, you can feel and/or hear, the PS pump whine/strain and sometimes an unusual feel to the pedal also.

Many folks will drive their gassers for hundreds of thousands of miles and never think of changing their PS fluid, then seem perplexed when the unit finally gives up. I have never seen or witnessed a PS pump failure in high mileage vehicles that had the fluid changed regularly.

It’s not uncommon for the HB unit to fail at 50-70k miles on many HDs that have lacked service in this area.
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2005 Chev Duramax/Allison 3500LS DRW Crew Cab
CAI / LMM intake OH kit, Sulastic springs, Bilsteins,
B&W 30K-Turnover GN, Putnam XDR 15K, Ride-Rite Air Springs, A/T Revos.
Pulling 10 tons daily.

2006 Chev 6.0L/4L80e 3500WT DRW Ex-Cab
9 'Flat/GN, Ride-Rite Air Springs, A/T Revos.
Pulling 6 tons daily.

"The difference between liberals and cannibals, is that cannibals eat only their enemies." -Lyndon B.Johnson 100th

Last edited by Hook'em_Horns! : 08-24-2008 at 01:02 PM.
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