Identifying Eaton Power Steering Pumps

Identifying Eaton Power Steering Pumps
BAB Steering Identifying Eaton Power Steering Pumps BAB Steering Hydraulics, Inc. Copyright © 2017 All Rights Reserved

BAB Steering Hydraulics, Inc. Copyright © 2017 All Rights Reserved
What You Need to Know There is no parts book that will identify the steering pump on any given vehicle. The part number however is stamped on some steering pumps. This presentation will show you how to locate that part number and help you identify the correct pump without a part number It is imperative that you use the correct pump because over 75% of the steering problem you encounter are caused by not using the correct pump. BAB is the only re-manufacturer with more than one location. BAB Steering Hydraulics, Inc. Copyright © 2017 All Rights Reserved

Eaton Pump Models The Eaton ‘B’ model The most popular The Eaton ‘BB’ model Has a triangular boss Used after 1984 The Eaton ‘U’ models Has a round boss Used prior to 1984 BAB Steering Hydraulics, Inc. Copyright © 2017 All Rights Reserved

Identify the Shaft Type
Belt/Pulley Driven Splined Shaft Woodruff Key Nut Retained BAB Steering Hydraulics, Inc. Copyright © 2017 All Rights Reserved

ID # is on the Side ID # ID # Belt/Pulley Driven Splined Shaft ID #
Woodruff Key Nut Retained BAB Steering Hydraulics, Inc. Copyright © 2017 All Rights Reserved December 2004

Measure The Shaft Belt/Pulley Driven Splined Shaft Woodruff Key
Nut Retained BAB Steering Hydraulics, Inc. Copyright © 2017 All Rights Reserved December 2004

Identify the Volume Volume takes space. The higher the volume the more space needed. You must determine the correct volume. To do so you must remove the pump from the reservoir. Turn the pump over so you can see the torque nut and ….. BAB Steering Hydraulics, Inc. Copyright © 2017 All Rights Reserved

Identify the Volume Check the threads. Three or more threads showing designates low volume. One thread or less designates high volume “S” in the BAB Part # is low volume and “H” is high volume BAB Steering Hydraulics, Inc. Copyright © 2017 All Rights Reserved

Very Important! You can not make a high volume pump out of a low volume pump by backing out the torque nut. You play with the torque nut you PAY for the pump BAB Steering Hydraulics, Inc. Copyright © 2017 All Rights Reserved

To ID the Correct P/N Assemble the information you collected Shaft Type and length Engine Gas or Diesel Pump Location Determine volume either high or low Determine rotation C/W or CC/W Double click on Acrobat Icon for a pump Rotation Chart BAB Steering Hydraulics, Inc. Copyright © 2017 All Rights Reserved

Check the Application Chart
Apply the information you collected to the Eaton ‘B’ Model Pump Chart. Double click on the Acrobat Icon below to view the application chart. The part number is in the right hand column BAB Steering Hydraulics, Inc. Copyright © 2017 All Rights Reserved

The EATON ‘BB’ MODEL The ‘BB’ model pump is used after 1984 This pump has a triangular boss One has a drilled triangular boss One has an un-drilled triangular boss The ‘BB’ Model has a different cam size than the ‘U’ Model BAB Steering Hydraulics, Inc. Copyright © 2017 All Rights Reserved

Eaton ‘BB’ Model Pumps Drilled Triangular Boss
Un-drilled Triangular Boss BAB Steering Hydraulics, Inc. Copyright © 2017 All Rights Reserved

‘BB’ Model Filter The reservoir and filter sit on top of the pump The Eaton ‘BB’ model pump also has a filter which is located in the reservoir. BAB Steering Hydraulics, Inc. Copyright © 2017 All Rights Reserved

‘BB’ Model Filter The system could also use a remote reservoir in which case a suction tube would take the place of the reservoir on top of the pump BAB Steering Hydraulics, Inc. Copyright © 2017 All Rights Reserved

Collect Information Again we collect information. We need to know: Shaft Type Rotation Mounting Port Size Cam Size List the information in the order noted above. Write down your information as if it were a part number. BAB Steering Hydraulics, Inc. Copyright © 2017 All Rights Reserved

A - Identify the Shaft Type
Identify the shaft type from the chart. Write down the number that identifies your shaft type. Let’s say we have a drilled, key retained shaft, so we put down A = 1 BAB Steering Hydraulics, Inc. Copyright © 2017 All Rights Reserved December 2004

B - Identify the Rotation
B – Rotation either C/W CC/W The rotation is found cast into the base of the pump. If it is not marked the rotation is C/W BAB Steering Hydraulics, Inc. Copyright © 2017 All Rights Reserved

B - Identify the Rotation
B – Rotation C/W CC/W Let’s use C/W so write down B = 1 BAB Steering Hydraulics, Inc. Copyright © 2017 All Rights Reserved

C – Identify the Mounting
C – Mounting Write down the number that identifies the mounting Un-drilled Drilled Let’s use # 1 un-drilled and write down C = 1 1. 2. BAB Steering Hydraulics, Inc. Copyright © 2017 All Rights Reserved

D – Identify the Port Size
We need to know the size of the port. Not the threaded or fitting size. The PORT size The port is the area in red BAB Steering Hydraulics, Inc. Copyright © 2017 All Rights Reserved December 2004

Measure the port size by inserting the DRIVE END of a drill bit into the port. You have seven choices 1.= 13/64 2.= 3/16 3.= 11/64 4.= 5/32 5.= 9/64 6.= 1/8 7.= 7/64 BAB Steering Hydraulics, Inc. Copyright © 2017 All Rights Reserved

We determine the port size to be #3 or 11/64 So we write down D = 3. To this point we have identified A – The shaft type = 1 B – The rotation = 1 C – The mounting = 1 D – The Port size = 3 This gives us an partial assembly # of 1113 Now we determine the …… BAB Steering Hydraulics, Inc. Copyright © 2017 All Rights Reserved

E – Identify the Cam Size
The cam size is determined by measuring from the end of the front cover arrow A and the beginning of the end cover arrow B Cam Size 1.75 = A 2.25 = B A B BAB Steering Hydraulics, Inc. Copyright © 2017 All Rights Reserved

The Assembly Number Add the Cam Size letter (A or B) to the assembly number of 1113 A = 1.75 B = 2.25 We will use: A for 1.75 Our new assembly # is 1113A BAB Steering Hydraulics, Inc. Copyright © 2017 All Rights Reserved

Return Port We may also need to know if the pump has a return port which can be found on the side of the pump. The housing would be tapped. BAB Steering Hydraulics, Inc. Copyright © 2017 All Rights Reserved

Part Number Find the new assembly # 1113A on the Eaton ‘BB’ Model Pump Chart. Double click on the Acrobat Icon below. The BAB part # is to the right of the assembly number BAB Steering Hydraulics, Inc. Copyright © 2017 All Rights Reserved

EATON ‘U’ Pump The ‘U’ model pump is used prior to 1984 This pump has a round boss The Model ‘U’ has a different cam size than the ‘BB’ Model BAB Steering Hydraulics, Inc. Copyright © 2017 All Rights Reserved

Eaton ‘U’ Model Pump The ‘U’ model pump is used prior to 1984 This pump has a round boss The Model ‘U’ has a different cam size than the ‘BB’ Model BAB Steering Hydraulics, Inc. Copyright © 2017 All Rights Reserved

‘U’ Model Filter The Eaton ‘BB’ model pump also has a filter which is located in the reservoir. The reservoir and filter sit on top of the pump BAB Steering Hydraulics, Inc. Copyright © 2017 All Rights Reserved

‘U’ Model Filter The system could use a remote reservoir in which case a suction tube would take the place of the reservoir on top of the pump BAB Steering Hydraulics, Inc. Copyright © 2017 All Rights Reserved

Collect Information Again we collect information. We need: Return Port Size Shaft Type Cam Size Pressure Port Application List the information in the order noted above. Write down your information as if it were a part number. NOTE: instead of A, B or C we now use 1, 2 or 3 BAB Steering Hydraulics, Inc. Copyright © 2017 All Rights Reserved

1 - Identify the Return Port
Identify the size of the Return Port from the chart below. No Return 3/8 1/2 9/16 5/8 Let’s use no return port so write down the letter ‘A’ in box 1 BAB Steering Hydraulics, Inc. Copyright © 2017 All Rights Reserved

2 - Identify the Shaft Type
Identify the shaft type from the chart. Write down the letter that identifies your shaft type. Let’s say we have 1" or long shaft so we put an ‘A’ in box 2 = 1" or long shaft = 1/2" or short shaft BAB Steering Hydraulics, Inc. Copyright © 2017 All Rights Reserved

3 – Identify the Cam Size The cam size is determined by measuring from the end of the front cover arrow A and the beginning of the end cover arrow B Cam Size 1.25" = A 1.50" = B Our cam is 1.25 so put a ‘A’ in box 3 A B BAB Steering Hydraulics, Inc. Copyright © 2017 All Rights Reserved

4 – Two Types of Ports O-Ring 3/4" Fitting = 15/64 = 7/32 = 13/64 = 11/64 = 5/32 Farrell 5/8" Fitting F. = 1/4 G. = 7/32 H. = 13/64 I. = 3/16 J. = 5/32 BAB Steering Hydraulics, Inc. Copyright © 2017 All Rights Reserved

4 – Identify the Port Size
Measure the port size by inserting the DRIVE END of a drill bit into the port. We have a 5/8“ Farrell fitting with a port size of 7/32 so write down a ‘G’ in box 4 BAB Steering Hydraulics, Inc. Copyright © 2017 All Rights Reserved

Assemble the Part Number
To this point identified The Return Port = A The Shaft Type = A The Cam Size = A The Pressure Port = G This gives us a partial BAB # of AAAG Now we determine the APPLICATION BAB Steering Hydraulics, Inc. Copyright © 2017 All Rights Reserved

5 – Application We find our application on the Eaton ‘U’ Model Application Chart. Double click on the Acrobat Icon below to view the application chart. Let’s say we have a HF54 (4 hose) gear on our vehicle and put a ‘D’ in the last box BAB Steering Hydraulics, Inc. Copyright © 2017 All Rights Reserved

Part Number This gives us a BAB # of AAAGD If we check the price list we will find out that there is no such part number as AAAGD There is an AAAGA and an AAAGC but no AAAGD This should be an indication that you have an incorrect pump, you need to double check your measurement or call BAB Technical Assistance BAB Steering Hydraulics, Inc. Copyright © 2017 All Rights Reserved

Part Number This is how BAB Steering protects the steering system and the installing technician. BAB Steering not only recognizes every different application we also spend the time and money to supply ever application. BAB does not consolidate part numbers. BAB Steering Hydraulics, Inc. Copyright © 2017 All Rights Reserved

Need Assistance If you need assistance identifying
a gear or wish to check availability please call the order desk NOTE: You will get a person. We do NOT use an answering service. BAB Steering Hydraulics, Inc. Copyright © 2017 All Rights Reserved

Identifying Eaton Power Steering Pumps

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