CAT 1C1

Jim Keller (MechE) and John C. Warmerdam (CropSM). Others present but not pictured are rumored to include John W. Warmerdam, Alex Smith, Andy Hulse, and Victor Duraj - things were pretty "hazy".

Thank you to everyone for your interest in this project. So far there have been six Saturday work parties plus some action here and there. We expect to be updating this page weekly with a week-in-review assortment of pictures, comments, and questions we're are trying to answer. Inquiries, comments, and suggestions from affiliated or non-affiliated individuals should be directed to Sue Esdaile at esdaile@pacbell.net.

We'd like to thank members of the Antique Caterpillar Machinery Owners Club and others who have already come forward with excellent offers of advice, information, and parts.

Date	Resolutions	Description
1/4		"846" is stamped on the top rear of the transmission case. Some San Leandro gas 60's in the Collection have a similar number stamp but our Peoria gas 60 has no stamp. What may be the significance of the stamps? We'll try to list the SN's and stamps of the subject tractors here shortly.
1/4		"1A50" is stamped on the engine block just above the brass serial number plate. Engine number 1A14, Caterpillar's first diesel engine, is at the Smithsonian and is mentioned in issue 23 the ACMOC newsletter. What was the disposition of the other engines up to 1A49? Also, we'll have to ask Fred Heidrick about 1C2's engine or just look and see if anything is visible through the paint.
1/4		The current configuration of the tractor, with the fuel tank on the right and left-hand drive throttle control, has existed since, at most, three years after manufacture. A photo taken of the tractor at this time (when it was owned by Harms Brothers) shows the current configuration. The actual configuration of the tractor when it left the factory and when the current changes were made is unknown. 1/4: DAVE SMITH INDICATES THAT A 1C1 PHOTO, MOST LIKELY OF IT AT THE FACTORY, INDICATES A LEFT-SIDE FUEL TANK. THANK YOU, DAVE.
1/4		The air cleaner pictured in the Photo Gallery book is the original type, whereas the cleaner currently on 1C1 matches the replacement unit in the parts book.
1/4		If an original type air cleaner can be located - and the different cleaner-to-manifold connecting piece is not available, might Caterpillar Company still have a pattern for the connecting piece (part number 1A5410)?
1/4		The original drawbar assembly was removed to accommodate the double-drum Willamette winch. Was the original assembly the standard or the logging type?
1/4		The existing track pads are 20" wide. What width were the original pads? Mathematical scaling of what may be a showroom picture suggests a 20" width. There is a reference in ______ document that indicates the standard width was 16".
1/4		The LeTourneau-authored Cat 60 photo archive and gallery books show a September 1931 picture of what appears to be 1C1. This is believed so because no other published 1C photos show such caps. The Harms Brothers pictures and the video from 1940 provide no additional clues. Is the picture in the photo gallery that of 1C1? An answer to this would help with a number of other questions listed here.
1/4	1/4	The main frame rails are capped or gusseted at the very front, and this has not been seen on any other of the published pictures of 1C tractors. Might there be an early confirmed 1C1 picture that shows capped front rails? 1/4: DAVE SMITH INDICATES THAT A 1C1 PHOTO, MOST LIKELY OF IT AT THE FACTORY, SHOWS CAPPED RAILS. THANK YOU, DAVE.
1/4		The flywheel/clutch guard (1631-A) is missing. Was the original plaque, as seen in the September 1931 photo, the same as one that is found on a gas 60?
1/4		The original factory painting method has not been determined, in terms of which elements were assembled as bare metal and then painted as assemblies. It would be nice to determine the priming and painting sequence in order to match it as best as possible.
1/4		Trim and logo information have not be confirmed. Would any pictures or person's expertise suggest what items were trimmed and how, and how were the original logos applied (decal, painted, screened)?
1/4		The path of the starting motor mag leads needs to be confirmed because the photo gallery photo suggests a discrepancy from the parts book. It does however appear that the September 1931 photo is a pre-detail photo.
1/4		The starting engine currently mounted on the tractor has a different housing casting number, manifold and valve cover from the September 1931 photo gallery photo. The Collection has another starting engine that appears more like the one in the book but it has bosses underneath the block and is mounted on some type of steel frame that would not appear to fit up against a 1C tractor. The block casting numbers on the September 1931 photo and on our extra starting motor match, although the castings do not.
1/4		The brass seat-mounted serial plate is missing. It would be helpful to know if someone has experience replicating this kind of placard.
1/4		It appears that within the first three years since manufacture the fuel tank was already on the right side and the radiator had angle-iron support brackets (Harms Brothers picture). It does not appear that the undercarriage channels and idler sliders had been reinforced by the addition of steel plate as of that time.
1/5		The "1C1" serial number plates are attached with screws. Were the original plates attached by some other method?
1/5		What did the original gauges look like? Then, if needed, are identical or similar replacements available?


1/15	Sat	With work occuring on several occasions during the week, completed stripping of the undercarraiges to their 3-channel iron assemblies; began spring disassembly.
1/8	Sat	Disassemble 60% of undercarraiges; engine pulley nut; flywheel studs.
1/4	Tue	Remove sprocket backing plates and main shafts
1/1	Sat	Review parts list
12/18	Sat	Remove sprocket assemblies
12/16	Thu	Remove frame rails; place casting on cart
12/15	Wed	Remove spring and trucks
12/11	Sat	Remove tracks
12/4	Sat	Remove engine; complete stand
11/20	Sat	Remove controls, seat, tank, fenders, final drive cover; work on stand
11/13	Sat	Remove radiator, air cleaner, PTO for winch