If and when you install helper springs the wide part goes to the center plate. I installed mine backwards today and didn't know it mattered, a spring is a spring I thought. When I was reading up on greasing the slack adjusters I noticed it specified wide part to the plate. My image is wrong I have since reversed them. Only one of the pins was severely corroded but cleaned up nicely. It is temping to want to lube these pins but all the information says to leave them dry, so I did.
Old Town Motorcoach is replacing my left rear brakes and rotor due to the pads being stuck against the rotor...pads were completely gone and the rotor had a 1/4" grove cut into them buy the remaining pad plate. I was told by tech the cause was there was road tar on the slide pin which prevented the pad from retracting....the damage had been going on for quite some time, (long before I got the coach). Anyway, to your point, I was told to never grease the pins as doing so is a magnet for dirt, sand etc., was also told once the chrome finish on the pin has worn away....replace...the exposed area will supposedly quickly corrode and once again prevent the pad from moving back and forth. I was told to periodically stick a water hose through the holes in the wheel, especially on the duals and wash out the brake calipers.
FWIW!!
dave
I have 4 spare new pins but the old ones cleaned up fine. No pitting.
Maybe not grease, but dry Teflon lubricant that is super slick and doesn't attract dirt or grime. JMO
For those with them on backwards, I can't see a reason why it matters. The instructions say install a certain way, but I seriously doubt it will cause issue if installed backwards. If it was very crucial, the spring package would have instructions with them. I did what made sense to me at the time, because I couldn't find instructions....and I chose correctly (I'd rather be lucky than right).
For those like me that often can't read all the words, craneman said: "My image is wrong I have since reversed them."
If I was going to yield to the urge to put anything on the pins, it would have been graphite, seems like nothing ever sticks to it.
I also take a water hose to the calipers when I wash the coach. Been 2 years since the pins have been out and the ends look good no dust and dirt in the caliper Assembly.
Keep checking Ebay,found 7 brand new pins last year for under $100!!!!
Adding the picture of the correct installation of helper springs
What is the part no. of the pins for the 99 320
J.C.
Should be Meritor KIT-15016 Slide pins and all the hardware
KIT-15018 Helper springs
If you want just the pins and not all the other hardware you need 1259-A-287
Pamela & Mike
This is the tool I used to pull the pins. First I sprayed Kroil then hammered in about a 1/4 inch and pulled back out with jury rig tool. I cleaned the threads with a tap 3/8-16 and used molycoat on the threads.
Job well done Craneman,good info and pictures!!!!
Thankyou All for the info and part numbers..helper springs are next on my list.