Lemme tell ya bout a story of ah man named Ben, bought a motorhome ran good but wouldn’t stop… OK, I know, I won;t quit my day job….
Ben picked up a pretty nice coach a built up twin bed refinished in the middle 90’s now in to see what the past 20 years has done to it.
The GMC uses a hybrid system with disc brakes on the front 2 wheels and drum on the rear 4. There have been all sorts of brake modifications perpetuated on the GMC, we do not do any of that. We can bring the original hybrid system to a serviceable condition giving you very useable stopping capacity and given that fact the system was designed together and balanced… if you follow the narrow path you can renew you brake system with the least amount of issues.
First are the rear 4 brakes, anything you do to one all 4 should get. 
Bearings were water contaminated so they all get replaced 
With the brake plate stripped you can see how much the wheel cylinder had been leaking 
Everything… hoses, cylinder, shoes, hardware kits, bearing & seals all get renewed x 4 
On to the front wheels, pulling the upper ball joint out you can see the CV boot issue and not knowing the front bearing history we’ll replace those too 
, the knuckle off we’ll replace the calipers, bearings, seals , new Teflon lined hoses and install some of those new Delco organic riveted pads 
Lets move to the brake master cylinder…. Wow, what’s that stuff 
Needs a new brake master and all the lines cleaned out with a new brass combination valve.
Hey Hank has the fuel tanks down… whatcha lookn at Hank? Somthin good I hope 
Looks like the face of the moon in there! 
Actually we had to replace 1 tank after it was cleaned where the rust was holding hands. All back together now we move to the motor and the leaking water pump we knew would be there 
Note the goo coming out of the weep hole in the snout of the pump/ The coach had the original cast impeller pump next to an all new, full sized impeller replacement. If you have a cast impeller on your water pump I would replace it. New is the deal…
With the radiator out, it had seen it’s better day…. you can see the timing chain cover 
and now with new double roller timing chain taking out the original, loose plastic gear original set up 
With the newly cored radiator, don’t buy aluminum, Hank fired the coach up today and pulled her off the lift. I’ll be getting with you soon there Ben for a trip to see how she looks. Stay tuned…
