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Antique Caterpillar Machinery Owners Club
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CAT 933G the Hunt for parts.
CAT 933G the Hunt for parts.
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2 months 1 week ago #257777
by Torpex
Got working on the 933, after getting a shop manual. )) Opened her bowels up and found the source of the problems was a stripped pinion shaft/gear. I noticed the pinion shaft wasnt exactly snug and there was play in the bearings, that cant be good, need new bearings. I found that the pinion shaft gear part is available, so Ill be ordering that along with two new bearings and two new UJoints. Thats the easy part. .
Problem is the reverse Idler gear with the two gears in one got beat up pretty bad, and that gear seems to be unobtanium. So Im hoping to find a source of a parts machine, or the gear itself. P/N 3K6414. . Any Help will be appreciated to get this girl back up to operating condition. Its Life is on my farm, so she will be her till I die.
Thanks!
Frank
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1 month 4 weeks ago #258014
by Torpex
Has anyone ever had a professional Machine shop make gear for a CAT? I figure with CNC machines they could make the shape exactly, but what about the materials used and then operating strength?
Really hoping to get this machine back in operating condition.
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1 month 4 weeks ago #258020
by PhilC
Yes there should be many places in the US that can make the gear for you. I have had a few made here in Australia with no problems. Just make sure you use a company that specialized in gear making as they have the equipment to heat treat the gear correctly. A machined gear that is not correctly heat treated will not last.
944A - Machine SN 43A2589 Engine SN 90A284
955K- Machine SN 71J3772 Engine SN 83Z0704
D6 SN's 4R732sp, 5R2724, 5R4832
D8 SN's 15A1254, 15A2287, 15A2723
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Torpex
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1 month 4 weeks ago #258031
by Mike Meyer
If Cat can't supply the part, they will provide you a copy of the blueprint of it, so get the correct part number and go to your local Cat Dealer and ask them to get you the blueprint, then find a reputable gear maker and spend some coin.
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Torpex
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CAT 933G the Hunt for parts.
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