|For the Cat crawlers D2 3J-5J 4U-5U vintage
crawlers and dozers, and the 933 11A and later 42A models of the crawler loaders, we can
supply most if not all of the drums, inner and outer, pressure plates and parts as needed.
The discs, both the driving discs and the steel discs we can supply new. Be sure and
check your springs too. If they are bent, or if any are shorter than the others,
replace as needed. We sell the new outer springs at 7.00 ea and the inner springs at
We highly recommend converting to the bimetallic driving discs vs. the old riveted on
lining style discs(4B3533). This is an update to the earlier style clutches and cuts down
on the possibility of frozen clutches and gives increased life and higher coefficient of
friction to your clutches for a longer period of time.
It requires 12 bimetallic discs, 5H8530-->8E7628, and 12 steel discs,4B3532, per clutch
(the old style clutches used 8 ea). Instead of using the 8 friction discs, 4B3533,
with the riveted on linings and 8 steel separator discs, you will use 12 bimetallic
(sintered bronze) discs and 12 steel discs for each clutch.
The cost per clutch of course depends on how many steel discs you can use from your old
clutch. If you can reuse your old steel discs, you only need 4 additional steel discs per
clutch. The 12 bimetallic discs cost $264.00 per clutch (12 x $22) and the steel discs
are $13.00 each. If you have to replace every single disc in
each clutch the cost is 420.00 per clutch. If you can salvage your steel discs, you
can save the cost of 8 steel discs, or $104.00 savings per clutch, bringing your cost per
clutch to $316.00.
Free shipping in US only, Priority Mail or UPS Ground, on orders $500 or
can usually ship on the same day any items we have in stock that do not have to be pulled
from a machine. We are set up to offer the payment choices of either Visa, Master
Card, Discover American Express, or the PayPal option (to the account of firstname.lastname@example.org)
Al items below are in stock and if you would
like to get any of them on the way just let us know! If you are in the US you may
call 1-800-531-9021 or if you are outside the US, 1 208 342 8911. You may also
Our hours are Monday through Friday from 10 am
Eastern Time to 6 pm Eastern Time (8 am Mtn Time to 4 pm Mtn Time). We are located
20 miles east of Boise, Idaho.
D2 CLUTCH DISCS
The 933 11A and 933 42A series use the same discs, Qty 12 ea required for each clutch.
The 5H8530 --> 8E7628 bimetallic discs are $22.00/EA.
The 4B3532 steel discs are $13.00/ea
ONE COMPLETE CLUTCH PACK OF 12 BIMETALLIC AND 12 STEEL PLATES = $420.00
6B8809 Steering clutch inner springs (6 required as needed) 5.00 ea
6B8808 Steering clutch outer springs (6 required
as needed) 7.00 ea
NEW D2 4B3495
Steering clutch PINS/STUDS $9.00 ea or set of 6 at $45.00 (Six required per
RETAINERS NEW $10.00 ea (6 required per clutch)
T-18 --> 0T0018 NEW 5 FOR $25.00 or Set of 12 @ $40.00 (12
required per clutch)
2B9338-->9F1119 BEARING, STEERING CLUTCH THROW-OUT BEARINGS
FIT D2'S 3J 5J 4U 5U MODEL CRAWLER TRACTORS AND THE 933 11A AND 42A CRAWLER LOADERS
Steering Clutch Compression Tool 56.00 Compress all 6 springs at once for
easier assembly and disassembly.
FINAL DRIVE SEALS 1A4296->3B5762->2H1542->5H0424 FITS ALL MODELS OF R2-D2
CRAWLERS NEW 165.00 EA
THESE SEALS ALSO FIT CAT 15, CAT 20, AND CAT 22 CRAWLERS.
D2 BOTTOM ROLLER SEALS 7F8454
NEW $38.00 ea
THESE SEALS FIT THE BOTTOM ROLLERS FOR D2 4U2389
THRU 4U7560 THEY ALSO FIT THE WIDE GAUGE MODEL 5U3860 THRU 5U18894 AND THE 933 TRACK
LOADERS 11A1-THRU 11A2595
Because D2's have been made since 1938, you might even have some of these later rollers on
your track frame. To see if these seals fit your rollers, look at the casting number
on your roller collars. If you have the collar 6F8287 collars on your rollers, these
seals will fit.
FLYWHEEL CLUTCH COLLAR NEW 215.00 EA
also have NEW D2 brake bands, 4B4918-->5F3254
bands complete with linings............185.00 ea
BRAKE BANDS fit all the D2 3J, 5J, 4U, AND 5U crawlers. These bands DO NOT fit the 933 track loaders.
Cat Model 933
Series 11A and 42A p/n 6H1458 Heavy Duty Lining
kits W/rivets $78.00 ea.
For the D2 3J, D2 5J, D2 4U, and D2 5U models we have
also produced NEW BRAKE DRUMS. 4B3688->4B7356->5B3281 $285.00 ea
For the D2's and 933 track loaders
we have manufactured NEW INNER DRIVING DRUMS 5B3270-5B3179-8H6540-8H6843
New ones sold out! Good used
7B6248 FLYWHEEL RING GEAR (93 teeth)
7B6248 and 7B6249 (SAME GEAR) now in stock 240.00
TO GO WITH YOUR FLYWHEEL RING GEAR WE HAVE PRODUCED NEW 6B1360
STARTER PINION GEARS $154.00
4B3450 Early flywheel clutch driven member (center friction disc) fit the early D2 and R2
crawlers 3J1 to 3J8600, 5J1 to 5J10561, 4J1 to 4J1185, 6J1 to 6J1185 . If you
have this disc you will need to upgrade to the later, thicker, friction disc used in the
later D2 machines 4U and 5U along with the Pressure Plate and front plate below 8F3041 and
WE ALSO CARRY SOME OF THE NEW FLYWHEEL CLUTCH
PLATES AND DISCS
8B9389-->8F3041 $230.00 New 5F7434 --> 8B9392 -->
6Y7162 $145.00 New for D2 4U and 5U Flywheel Clutches
FLYWHEEL CLUTCH PLATE NEW $185.00
Flywheel Clutch Plate $255.00 New
D2 STEEL ID PLATE $12.00 EA OR SET OF 2 @ 20.00
D2 BRASS ID PLATE $18.00 EA OR SET OF 2 @ $30.00
SET OF 5 STEEL EMBLEMS FOR THE EARLY CRAWLERS $50.00 PER SET
SET OF 5 BRASS EMBLEMS FOR THE EARLY CRAWLERS $75.0 PER SET
IF YOU HAVE EQUIPMENT
THAT IS DATED BACK THE THE EARLY 40'S AND EARLIER YOU WILL BE INTERESTED IN AN OLD, ALMOST
ANCIENT, CATALOG THAT YOU CAN DOWNLOAD AND SAVE TO YOUR COMPUTER
AND SUPPLY CATALOG This is pretty good for old carburetors.
Another good resource for Zenith Carburetor part
identification is (HERE)
REPLACING BOTTOM ROLLERS ON A CAT D2
get a lot of calls and Emails regarding the availability of good used D2 bottom rollers.
We can seldom assist. New D2 bottom rollers are no longer available and if
you priced out all the indvidual parts required to put one together, piece by piece, you
are spending several hundred dollars per roller. If your components are solid, you
can easily weld up the wear surfaces and even the flanges to keep reusing the rollers you
have. If you have the later style rollers, we carry the roller seals that make them
economical to replace (see above, 38.00 ea for the seals)
We do have some good used early style and late style D2 bottom
roller shells. For the late style D2 rollers we can supply the seals. For the
roller shells w/ shafts 150 ea for the Single Flange and 120 ea for the Double flanged
THEY CAN BE REPLACED!
Thanks to a conversation I had with a Grimy Man from the great Down
Under...Aussieland, I can pass along the procedure to replacing your D2 bottom rollers
with rollers designed for the Cat D3,
D2 to D3 ROLLER CONVERSION
From Conversations with Gary Boswell, Aussie Grimy Man
Basic facts to compensate:
D2 rollers are 50 mm larger OD than the D3 rollers and have a different mounting hole
pattern. D2 Track frames are removed from the crawler and turned upside down. When you do
the math, the rollers must be spaced 25mm from the frame. Put the rollers on a spacer bar
equal to half (25 mm) of the 50mm diameter difference.
"I also have converted my D2 4U series dozer over to cat D3C rollers, I had to add
piece of 25 x 50mm flat bar under each side of the roller frame and redrill and tap the
mounting holes, this works a treat, same chain width only the D3 rollers were 50mm smaller
Just a bit of useless info for you."
Gary, The D2 to D3 conversion info is NOT useless information! After the holes were
drilled and tapped, did you weld the strips to the bottom of the track frames or bolt the
new spacer on using the old D2 tapped holes?
Thanks for any additional information. I'll be sure and pass it on.
Gary's Additional explanation:
I mounted the flat bar to the four rollers correctly spaced part, marked the holes pilot
drilled, removed rollers, drill the 11.5 mm holes for the ½ bolts to be tapped in a
drill press, once this was completed I bolted the rollers back to the new flat bar,
position them on the track frame, tack welded in place, removed all the rollers again then
fully welded the flat to the track frame, took me around about 4 ½ days to complete at me
own pace, could be completed quicker now I know what is involved.
You can use small clamps to temporarily mount the two long flat bars to the D3 roller
flanges to mark the holes prior to drilling.
Sound like a lot of work! Not to me! You will end up with new
bottom rollers, lifetime sealed, and one D3 roller will cost you less than the cost of two
seals to partially repair your old worn out original D2 bottom rollers. It's your
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