Question w/r 280zx two different front brake caliper pins

[DADZSUN]

So I'm in the process of installing a 280zx brake system into my 510. '81 front calipers and the 'newer' '83 rear calipers. Getting a bracket for the rear is a PITA, but that's another story.

 

I've taken the front '81 calipers apart and cleaned/painted them. I'm about to reinstall and noticed that the sliding pins are different. Two are of the typical solid metal, and two have a plastic type of sheath. The bore on the caliper appears to be the same so I'm unsure of which order they go.

 

Anybody know what the idea/purpose is to the 2-piece pin and does it go in front or rear of the rotor direction?

 

Thanks!

 

Fritz

 

[NCLNDYM]

That's too funny. I just discovered the same thing today after I was done painting and cleaning the parts up. If I find anything out I'll let ya know. :cool:

[NCLNDYM]

I've looked and can't find anything out as to why there are 2 different pins, any help out there

[ggzilla]

They are called the Main pin and Sub-pin. Main pin goes in the top hole.

[NCLNDYM]

Thanks, which one is the main pin, solid or the one with the rubber sleeve

[ggzilla]

Main pin is the solid one. Coat both pins with a light layer of grease before installing so they slide easy, use the same grease that you use on the four sliding sufaces of the caliper.

[NCLNDYM]

four surfaces, can you name them please...new to rebuilding the brakes.

[ggzilla]

They don't have names, but the sliding surfaces are the places where the caliper touches the adapter bracket.

 

It's just like drum brakes. Wherever the metal slides needs a very light coat of grease. I put a dab on then smear it with my thumb. Wipe off the excess. You don't want it getting on the brake pad/shoe material.

[NCLNDYM]

I'm guessing the pins, the part where the boot slips onto the caliper. Not sure how the pads and the retaining clips work, they were off when i got them

[NCLNDYM]

I'm guessing the pins, the part where the boot slips onto the caliper. Not sure how the pads and the retaining clips work, they were off when i got them

 

Going to get my pads and if i can't figure it out, I'll be back. Thanks for the advice on the pins, was holding me up.:cool:

[NCLNDYM]

Ok, so I've finally finished the rebuild of my brakes, etc...Anyone know where I can find some dust covers, I can't find them at any auto shop, OReillys, autozone, napa, pepboys, rockauto, where can I find some

 

[ggzilla]

You mean grease caps?

 

Get them at Nissan. For 1972 510, about $2 each:

40234-28500 CAP-HUB,FRONT WHEEL

For 280ZX

40234-S0400 CAP-HUB,FRONT WHEEL

[DADZSUN]

Good info, thanks ggzilla.

 

Next question, typically the 280zx struts are swapped left <-> right on the 510.

 

With the caliper mounted behind the strut in an OEM setup, the lower Sub-Pin 'receives' the rotor first followed by the Main-Pin in the top hole. However, when the strut's are reversed as in a 510 install, the caliper is now mounted in front of the strut and the rotor is now first 'received' from the top... Does that mean the Sub-Pin should be in the top hole?

 

Makes sense what I'm trying to say?

 

Thanks

 

Fritz