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Caterpillar DW15

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8 years 8 months ago #138745 by QuAD
Caterpillar DW15 was created by QuAD
Gilbert restore the tachometer of the DW15 and look not digital, but ancient solidity.
But we do have a question about this tachometer.
Why is there a lock ?
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8 years 8 months ago #138747 by Deas Plant.
Replied by Deas Plant. on topic Burglar-proofing?
Hi, Quad.
My guess would that the lock was to stop people getting into the tachometer and fiddling with the recorder needle that remains pegged at the highest revs recorded by the tacho. This arrangement was an early attempt to stop people over-revving these engines because doing so left a record via the position of that recorder needle.

Just my 0.02.

You have a wonderful day. Best wishes. Deas Plant.

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8 years 8 months ago #138765 by tctractors
Replied by tctractors on topic Caterpillar DW15
I am still giggling over Dea's Burglar Proofing title, I have seen this years ago in 769 dumpers, no 1 had the key for the thing but a second hand inside the face would lock in place showing engine over speed at a pre set position, this I took to point to incorrect driving, at that time all the dumpers on the site had Prayer Brakes instead of air brakes due to no money to fix e'm, so they used to be loaded heavy and driven steady, so as already said Over Speed record, the dumpers had air start engines just thought I would say.
tctractors

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8 years 8 months ago #138777 by Kelly
Replied by Kelly on topic Caterpillar DW15

Hi, Quad.
My guess would that the lock was to stop people getting into the tachometer and fiddling with the recorder needle that remains pegged at the highest revs recorded by the tacho. This arrangement was an early attempt to stop people over-revving these engines because doing so left a record via the position of that recorder needle.

Just my 0.02.



Back in the day most pull Skinner's (scraper operators) had tac key on their key ring.:evil:

Kelly

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8 years 8 months ago #138817 by QuAD
Replied by QuAD on topic Caterpillar DW15
Thanks for the answer.

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8 years 8 months ago #138818 by QuAD
Replied by QuAD on topic Caterpillar DW15
New oil pressure gauge
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8 years 8 months ago #138842 by MARCOTEN
Replied by MARCOTEN on topic Caterpillar DW15
nice new oil gauge, where could you buy this antique gauge?

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8 years 8 months ago #138890 by Ray54
Replied by Ray54 on topic Caterpillar DW15
What a great find. That has been in the box about as long as I have been around.

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8 years 8 months ago #138912 by Paso Bob
Replied by Paso Bob on topic Caterpillar DW15
Having a tach key was a must and I kept one on my key ring! Going downhill and you if started to bounce a little, the engine will surge and the tach needle will jump up higher then the actual RPM's. On one of the spreads I worked on that included ten 657's, the mechanics would check tachs at noon and quitting time. If the tattle tale was pushed off the peg, the operator went down the road.

D-4 7U-43159 with 4S dozer and Cat 40 scraper, D-7 3T-1179 with Cat 7S hydraulic dozer, D-7 17A 13,944, D-8 14A-1160 with Cat 8S cable dozer, Cat 12-99E-4433 Grader. All runners and users.

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8 years 8 months ago #139254 by HOLLANDCAT
Replied by HOLLANDCAT on topic Caterpillar DW15
Marcoten ,


I could help you out with a gauge if you need one.


HOLLANDCAT

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