BULL PINION SEAL - WHY YOUR BRAKES ARE GREASE SOAKED

The Bull Pinion Seal is the primary cause of grease soaked brakes.

These tractors left the factory with leather bull pinion seals. 

While structurally a robust looking seal, unfortunately the leather seal material deteriorates over time, the differential lubricant leaks out and soaks the brake linings.
 

New style Nitrile rubber seals have replaced the obsolete leather seals.

This is an image of Chicago Rawhide leather bull pinion seal that was original equipment on every "C" series tractor from 1948 to 1968.

Below is the modern Nitrile rubber seal that replaced the obsolete leather seal.

Bull Pinion Seal --

IHC #380922R91 is a replacement part for the obsolete part 380921R91

 

Timken 450183

National 450183

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Other Possible Interchange Part Numbers:

13690A SKF

17494 SKF

IHC 75260H (Super C thru 240)

301334R91 IHC

378157R91 IHC

359790R91 IHC

378158R91 IHC

PH269 CASE

1189732 CHRYSLER

 

Bull Pinion Bearing

Bull Pinion Bearing 404 2 required = IHC Part # 376476R91

ID 45mm 1.7717" OD 85mm 3.3465" Width 19mm 0.7480"

NDH U1209TM (full complement)

TIMKEN MU1209TM,

NTN/Bower MRY1209EM

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Other Possible Part Numbers

FAG R145RR, RHP H2009RF, SKF HCN209AV

Federal Mogul 1209

SKF NU209?  NU209ECM? NU209M? 

Bull Pinion Bearing C, SUPER C, 200, 230, 240

2 required = Original IHC Part # ST201

TIMKEN 209W ball bearing is a maximum capacity type, is dimensionally interchangeable

with the 209K type, but has greater capacity for supporting heavier radial

loads and light thrust loads in either direction.

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Other Possible Part Numbers, make certain it is a maximum capacity bearing

FAG MT209

FEDERAL MOGUL 1209

IHC 13176D 79569H 114527H1

McGILL 209M

NewHolland 0058968 0058968-9 058968

SKF 209A 209J 209M 209MQ6 209MQ6A7 209MQ6B7

NSK M209CE1TX9

The above full complement cylindrical roller bearing for the 404 can be substituted, or a less than full complement cylindrical roller bearing such as a MU1209TV also can be substituted

IH went to a cylindrical roller bearing in the 404 for higher radial load capacity.

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404 Bull Pinion Gear, Observe full complement cylindrical roller bearing.

Original 404 Bull Pinion Roller Bearing, Not a full complement bearing.
A full complement bearing will carry heavier radial loads

Farmall 404, International 404 Piston

404 Piston – Serial 100,500 & up

Original Piston -- Zollner 4095 -- CaseIH Part # 375800R1(R2 later)

3.2500 Bore  

3.838 x .228 Flange 

3.467  Seal  Land  

3.595   Barrel Diameter

7.0    High

Late 404 Sleeve Assy. -- Federal Mogul FP-SL2710 – Clevite - Discontinued 

CaseIH Part # 367795R1 O-Ring -- [Currently listed as 367799R1]

223-7118  O-Ring [Clevite]

Side by side comparison of pistons for the C135 engine.
Click to enlarge

 

THE FARMALL "C" SIZED SERIES TRACTOR

The intent of this blog is to archive information relating to the service and maintenance of the Farmall / International Model 'C' Series tractors.

The Farmall C tractor evolved through models  Super C, 200, 230 and 240, and finally in model 404.

That evolution continued through the production years from the first 'C" in 1948 until the last 404 came off the assembly line in 1968.
Basic mechanical improvements were added, power was increased along with the tractor's structural strength to accommodate the increases in power.
Hitches went from the basic drawbar, to a 2 point fasthitch, to a 3 point hitch on the 404 model.

I will endeavor to describe here what I have learned about this series of tractor.