D4 Steering Clutch
D4C & D4D STEERING CLUTCHES

The D4C (models 39A, 40A) and D4D (78A, 22C, 82J, 83J and others) steering clutches went through a small design difference from the earlier D4 4G, 7J, 2T, 5T, and 6U/7U series.   The early D4's originally used the riveted on lining style of friction discs and progressed to the bimetallic 3F5504 discs.  The D4C and D4D continued with the 3F5504 bimetallic discs while the steel discs and inner driving drums went through a change.  The inner driving drums changed from straight splined driving hubs to a ramp style driving drum (8H1174) and this requires the use of the 2H6936 steel separator plates.  This design began during the production of the late 6U/7U models.

D4D machines developed further and the steering clutches were offered with OIL CLUTCHES as an option, and finally the Oil Type Steering Clutches became standard.   We also carry those discs and they can be seen below the Dry Type discs and parts.
                                        uspsfreeshippingicon.jpg (27000 bytes)  In US only, via Priority Mail, 2-3 day delivery, on orders $500 or higher.

ORDERING INFO: 
GRIMY_Man_SM.jpg (55040 bytes)  We 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, or the PayPal option (to the account of webmaster@tractorparts.com)

All 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 email webmaster@tractorparts.com for orders/questions.

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.



D4 3F5504 Bimetallic friction discs @ $18.00 ea (Qty 11 used per clutch)
D4 2H6936 Steel separator plates @ $12.00 ea (Qty 10 used per clutch)
D4 CLUTCH DISCS.JPG (87624 bytes)

CAT-8H1174DRUM.jpg (86162 bytes)  D4 STEERING CLUTCH HUB....8H1174 FOR LATE STYLE D4 dry type clutches using the 2H6936 Steel Separator Plates
                                     8H1174..........$185.00

 

D4CLUTCHSPRINGS.JPG (33692 bytes)  D4 STEERING CLUTCH SPRINGS AND CLUTCH COMPRESSION TOOL

6B8807 OUTER SPRING (8 REQUIRED) 4.00 EA
6B8804 INNER SPRING (8 REQUIRED) 3.50 EA
CLUTCH COMPESSION TOOL 65.00 EA

CAT_D4_STEERING_CLUTCH_THROW-OUT_BEARING_1B4102.JPG (186758 bytes)  
NEW D4D STEERING CLUTCH THROW-OUT BEARING      P/N 1B4102           $45.00 EA
FITS D4 4G 7J 2T 5T 6U 7U VINTAGE MODELS AS WELL AS D4C AND D4D TRACTORS
ALSO FITS 955 12A AND 955 60A     THIS BEARING WILL EVEN FIT THE DIESEL 40 CRAWLERS 


CAT-4S9074DISC.jpg (25028 bytes)  D4 FLYWHEEL CLUTCH FRICTION DISCS.2 REQUIRED PER CLUTCH @ 42.00 EA.
2H6121--->4H2923--->1S8183--->4S9074    (PART NUMBER CHANGES OVER THE YEARS)


MAGNETO D4.JPG (154643 bytes)  D4 Magneto, with drive gear.  The magneto fits the D4400 engines and
the D315 engines used in the D4 models 4G, 7J, 2T, 5T, 6U, 7U.  This magneto was
also used in the 955 12A series and early 112 Motor Graders.  If the starting engine
mounted on top of the flywheel housing, this magneto was used.                          355.00

GENERAL SPECIFICATIONS FOR THE EARLY D4C(39A AND 40A SERIES FROM 1959 THRU 1963)

and to see how the D4C compared to the earlier D4 6U/7U series (CLICK HERE)

GENERAL SPECIFICATIONS FOR THE D4D

 

OIL TYPE STEERING CLUTCHES

CAT-6Y7914DISC.jpg (78456 bytes)  5K8617---> 3A2858--->6Y7914 FRICTION DISCS (CORK SURFACE)   $12.00   EA.


CAT-5K8616DISC.jpg (71460 bytes)  5K8616 STEEL SEPARATOR PLATES     $9.00 EA


CAT-5V0593DISC.jpg (84725 bytes)  4K1333--> 9K5484--> 2Y5134--> 5V0593 SPECIAL PLATE (BIMETALLIC FOR OIL TYPE CLUTCHES)  $16.50 EA

 

LINING KITS FOR THE OIL TYPE CLUTCHES......INNER AND OUTER LININGS AND RIVETS......LINING KIT $194.00


SERVICE INFORMATION FOR OIL TYPE STEERING CLUTCHES FOR D3C D4C DC

GENERAL SPECIFICATIONS FOR THE D4E WITH OIL TYPE STEERING CLUTCHES
 

CATERPILLAR STEERING CLUTCH SPEC SHEET

CAT_D4_STEERING_CLUTCH_DISASSEMBLY1.JPG (180960 bytes)
CAT_D4_STEERING_CLUTCH_DISASSEMBLY2.JPG (186223 bytes) CAT_D4_STEERING_CLUTCH_DISASSEMBLY3.JPG (191597 bytes)
The "T" bar puller can be used with the center  push-bolt or a
hydraulic cylinder.
CAT_D4_STEERING_CLUTCH_DISASSEMBLY4.JPG (186527 bytes)
We have a lot of misc pins
laying around but this chunk
of steel fit perfectly.
CAT_D4_STEERING_CLUTCH_DISASSEMBLY5.JPG (181703 bytes)
On a D2 or a D4 the clutches
are pressed off end of bevel
gear cross shaft.  On
D5 D6 D7's you press off a tapered splined stub shaft and flange.
CAT_D4_STEERING_CLUTCH_DISASSEMBLY6.JPG (185380 bytes)
Removal of bearing cage and
bearing makes disassembly
easier.
Don't forget to remove set
screws in retainer nut!!
CAT_D4_STEERING_CLUTCH_DISASSEMBLY7.JPG (188198 bytes)
When you press down on the compression tool you want something to keep the studs in place so get a spacer to keep studs from dropping when you turn the clutch over.
CAT_D4_STEERING_CLUTCH_DISASSEMBLY8.JPG (190987 bytes)
You can use a press like we usually do but unless you do a lot of these clutches a simple piece of all-thread is all that you need.  Anchor it through your work bench or table.
CAT_D4_STEERING_CLUTCH_DISASSEMBLY9.JPG (192568 bytes)
Place compression tool and add a washer to disperse the pressure over the face of the tool.  Otherwise you can end up with a concave tool!
CAT_D4_STEERING_CLUTCH_DISASSEMBLY10.JPG (187226 bytes)
With your spacer underneath to keep your studs in place (shown above)
and compression tool on top
you are ready to compress the springs.
CAT_D4_STEERING_CLUTCH_DISASSEMBLY11.JPG (177407 bytes)
As the springs compress the end of the studs will gain clearance until the locks
are free from the retainers.
CAT_D4_STEERING_CLUTCH_DISASSEMBLY12.JPG (185189 bytes)
Remove all of the locks and be careful not to lose any!
When you put these back in you apply grease to the locks
keep them in place.
CAT_D4_STEERING_CLUTCH_DISASSEMBLY13.JPG (184208 bytes)
Release all pressure and remove compression tool.  You can now remove retainers and springs.
CAT_D4_STEERING_CLUTCH_DISASSEMBLY14.JPG (182223 bytes)
Now is time to check measurements on springs.
if any are shorter than the others by 1/8" it should be replaced. It is probably a good practice just to replace them due to low cost and the labor involved if you have to go back in there again!
CAT_D4_STEERING_CLUTCH_DISASSEMBLY15.JPG (186083 bytes) CAT_D4_STEERING_CLUTCH_DISASSEMBLY16.JPG (188792 bytes)
Now you can remove all the parts for inspection of discs and components.

Minor rippling on the inner drum is fine.

Make sure stud holes on pressure plate are not wallowed out or worn too far below the surface.

Click HERE to view all of our new steering clutch discs.
 

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CLICK HERE FOR DETAILS

 

Email  webmaster@tractorparts.com for orders or questions.

 
CONTACT OUR OFFICE at 1-208-342-8911

General Gear and Machine, 733 Desert Wind Rd.,
Boise, Idaho, 83716  US
*All prices are in USD & do not include shipping
All prices are for new aftermarket unless stated otherwise
All OEM part numbers are for references only

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