Some old Cats of mine

[dieseldave]

1957 D9D

[dieseldave]

1957 D6

[Holger]

Very nice pictures! Thank you!
Nice to see the D9 beside the D2!
They are in a very good condition!

[martyn williams]

Hello Dave, great machines.Wish I had the room, would love a D9.

[Deas Plant]

Hi, DieselDave.
Nice photos. Thanks for sharing. That 9 looks pretty good, as do they all.

Thanks again.

[rvannatta]

Hello Dave, great machines.Wish I had the room, would love a D9.

Room is not a problem with a D-9----they will make the space you need to use them.

[Nick Drew]

YES YES YES !!!!

What a fantastic example of a D9 Dave

Thanks for sharing those super photos

Nick

[rvannatta]

Very nice pictures! Thank you!
Nice to see the D9 beside the D2!
They are in a very good condition!

But a rear cable control for the blade---not the kind that is most fun to operate as when ever the
clutch is released, the blade doesnt work.

One of the funny stories about this model was told me by a now deceased friend who ended up
being the manager for a company that one one of these machine as a beta test site.

One of the problems with the beta model was that ifyou attempted to back up a steep hill,
it would compress the springs that tension the tracks and the sprockets would spin in the tracks (not a good thing).

These things were designed by engineers from Peroia , Ill where everything is flat. Oregon is not flat.

They got the engineers out, and drove the machine down over a bank where you couldnt go forward
without driving over a cliff, and then demonstrated how it wouldnt back up. After the demo, they broughtout a TD-24 and towed it back on the road.

The engineers push back was---You are suppose to operate them on level ground!!!!!! Apparently though the engineers got it through their head eventually because the production models would back up a fairly well.

However, backing up was andhas been an issue with all the older Cats. We used to own a 4-G series D-4
(about a 1938 model). The sprockets didnt spin (usually) but it simply didnt have power enough
to pull itself on a steep hill----and ifyou tried the 1 track at a time trick backing up it would spin
in the track, so when I had to build trail on steep ground with it, we set up a yo-yo.

[dieseldave]

Thank you everyone for your kind comments.

Deas- Ever run one of these 1st generation 9s?

rvannatta- Fortunately the D9 is equipped with a No.29 CCU, which is live via a driveshaft off the engine. My 14A D8 has the same setup. Earlier D8s, D7s, D6s etc with a No.25 CCU operated as you say, only when there is power through the trans, and they are a PITA.

[rvannatta]

Thank you everyone for your kind comments.

Deas- Ever run one of these 1st generation 9s?

rvannatta- Fortunately the D9 is equipped with a No.29 CCU, which is live via a driveshaft off the engine. My 14A D8 has the same setup. Earlier D8s, D7s, D6s etc with a No.25 CCU operated as you say, only when there is power through the trans, and they are a PITA.

Ive worked around the cable machines, but my tenure as a Cat skinner has been with hydrualic ones.
Ive seen the problems guys have had with them.

One of my early experiences with a dozer was logging with a Cletrac. It was a D-6 sized machine with differential steering. That thing was completely crazy to operate.

Over the last 25 years we have had Fiat Allis machines. First a HD21A and presently have a 16B and a 31.