Can anyone tell me the difference between the Cat 824 and 834(other than tire size and hp)?  I'm talking the "A" series from the 60's.  And is the 988A the same as the 824 or 834?  I always thought the 988A and 834 shared the same basic frame but cannot verify this with documentation.  I was always trying to find old equipment literature to support my theory but have not been able to locate any. 

D8PETE wrote:

Can anyone tell me the difference between the Cat 824 and 834(other than tire size and hp)?  I'm talking the "A" series from the 60's.  And is the 988A the same as the 824 or 834?  I always thought the 988A and 834 shared the same basic frame but cannot verify this with documentation.  I was always trying to find old equipment literature to support my theory but have not been able to locate any. 



The 824 it's the same rear frame  and the base of the 988 the 834 have a + long frame

Hi, D8Pete.
The first 824s had a 4-cylinder engine but that didn't last long as Cat started putting in the same engine as the 988As. That made them a much better machine.

As Brunocat said, the 824As had the same back end as the 988As while the 834s were a somewhat bigger machine. Both the 824s and the 834s went pretty well as scraper pushers in good traction conditions and as clean-up machines on mine sites. One company in Western Australia even fitted two 824As with Cat D7E rippers and turned them loose building farms dams and ponds.

Just my 0.02.

Bruno cat - thank you for the thorough explanation and posting copies of the literature and parts manuals!👍👍 Awesome.
Deas Plant - when I was a young kid I would go to work with my dad. The company he worked for had a 988, 834, and 825. The 988 and 834 would often get teamed up to screen gravel. The 834 would feed the screen and the 988 would pull product away. Parked side by side they looked to be the same animal just outfitted differently. The 825 always looked a bit smaller but that was probably due to setting lower to the ground on the pad foot drums. The 834 was also used a lot as a second pusher behind the company's D9G when they were push loading 631/637C's in rock and harder materials. My dad spent a fair amount of time on the 988 & 834. The 988 was my favorite machine as a kid. My dad would let me operate it after the day was over. As a 12 year kid I felt like I was driving a house! The 834 was a beast too. Great memories. I loved those days! Thank you both for your responses.👍

That would definitely be cool Neil, but probably not. But never say never, right!?!?

D8PETE wrote:

Bruno cat - thank you for the thorough explanation and posting copies of the literature and parts manuals!👍👍 Awesome.
Deas Plant - when I was a young kid I would go to work with my dad. The company he worked for had a 988, 834, and 825. The 988 and 834 would often get teamed up to screen gravel. The 834 would feed the screen and the 988 would pull product away. Parked side by side they looked to be the same animal just outfitted differently. The 825 always looked a bit smaller but that was probably due to setting lower to the ground on the pad foot drums. The 834 was also used a lot as a second pusher behind the company's D9G when they were push loading 631/637C's in rock and harder materials. My dad spent a fair amount of time on the 988 & 834. The 988 was my favorite machine as a kid. My dad would let me operate it after the day was over. As a 12 year kid I felt like I was driving a house! The 834 was a beast too. Great memories. I loved those days! Thank you both for your responses.👍

D8 pete: It's normal enter collector. It's a beautifull machine .me since 6 years old it's the scrapers