Identification of F15 2WD?

Keith Webb · #1 25-09-18, 22:37

Maybe the anchor pins for the brake shoes need some adjustment?

Quote:

Originally Posted by Ganmain Tony

Appears to be to tight on passenger side. NOS cables may stretch a bit over time but there is a bit more to it.

Can only be the adjusting pin in the emergency brake lever. I thought its current postion had the lever as far back as it goes but the shoes are hard on the drum.

(Sigh) I'll have have another go...tomorrow night.

Jacques Reed · #2 25-09-18, 23:31

Hi Tony,

You probably know this, but that slotted wheel at the top of the shoes is also an adjustment for the distance between the shoes. There is an eccentric pin behind it which when the wheel is rotated moves the top of the shoes further in or out.

This may also affect the shoes making contact with the drum even with the brake lever all the way off.

Cheers,

Ganmain Tony · #3 26-09-18, 12:36

Quote:

Originally Posted by Jacques Reed

Hi Tony,

You probably know this, but that slotted wheel at the top of the shoes is also an adjustment for the distance between the shoes. There is an eccentric pin behind it which when the wheel is rotated moves the top of the shoes further in or out.

This may also affect the shoes making contact with the drum even with the brake lever all the way off.

Cheers,

Thanks Keefy and Jacques.

Yes that slotted wheel is the adjusting pin in the manual. It was seized and I didnt want to go near it.
The cam also appeared to be at its best setting for the drums to be at their closest.

I have bitten the bullet, removed the lever and applied some heat to it then a quick hit of CRC.

It has come free, so I will play with it tomorrow night and see how it goes.

I realise this sounds bit dumb, but my logic was "I didnt touch that" so if it worked before I took the truck to bits, the problem must lie in the components I have altered.

We will find out!!

Ganmain Tony · #4 27-09-18, 13:38

OK so... anchor pins are where they are supposed to be.
Eccentric cams where they are supposed to be.
Handbrake lever and eccentric behind it have been set up correctly

The cable is simply not long enough (AS IT HAS COME OUT OF THE BOX)

A solution is... to slice a section of the outer part (ie that the cable slides through) at one end.

Probably the end that slides into the backing plate. This will enable the cable to attach to the hand brake lever without starting to pull it, which starts to move the shoes onto the drum.

Suggestions welcome

Grant Bowker · #5 27-09-18, 14:17

Questions:
Is it a NOS cable or a modern "will fit" part? It's worth noting that F15 is listed as using *C101W-2275 cables and F15A *C01Q-2275A in case you ended up with the "wrong" part. I don't know the difference between the two cables. LWD parts show a cable tagged with the "correct" part number https://www.lwdparts.com/product/cable-handbrake-f15/ They also list the F15A cable and might be willing to measure length differences (sheath and overall) if asked.
Is the cable fully seating in the holding bracket on the backing plate? (and at the other end?)
Would it be better to take some (but less) off both ends of the sheath? You see less rust than I do but it might prevent formation of a rust ridge in the backing plate bracket that could block future removal.

Jacques Reed · #6 28-09-18, 01:43

Quote:

Originally Posted by Grant Bowker

Questions:
Is it a NOS cable or a modern "will fit" part? It's worth noting that F15 is listed as using *C101W-2275 cables and F15A *C01Q-2275A in case you ended up with the "wrong" part. I don't know the difference between the two cables.

Hi Tony,

Following on from Grant's comments if there is a major difference in lengths between an F15 And an F15-A handbrake cable I can at least confirm what is the F15-A cable length which may be of help.

The outer conduit is 39-3/4" long and the inner cable is 52-1/4" long giving a difference in the two lengths of 12-1/2"

I am very sure these measurements are accurate as they came off two NOS cables I bought along with the NOS backing plates that they were attached to. I took these measurement a long time ago in case I ever had to replace a cable. They work perfectly on my F15-A (and will be even better when I bend up the clips from the dimensions and photos you supplied!)

Hope this may be of some help.

Cheers,

Grant Bowker · #7 28-09-18, 02:36

I don't normally like to cast doubt on field measurements of original parts....but....
Parts list F15A-01 gives a length of 51-3/4 for part *C01Q-2275A (cable-hand brake-assembly),
Parts list F15-01 doesn't give a length for *C101W-2275,
Neither manual gives alternate numbers for earlier or later production.
The same part numbers and length notes appear in the earlier parts lists that cover all models.
I'm puzzled as when I was shortening a pair of *C01Q-2275B cables (originally 86 inches long) to recreate *C01Q-2275A cables for the 15cwt GS trailer I thought the measurements needed to be nearer those Jacques gave than the "official" version.