Rework Procedure for the Implement and Steering Pump Weep Hole on Certain M Series Motor Graders{5070} Caterpillar

Rework Procedure for the Implement and Steering Pump Weep Hole on Certain M Series Motor Graders{5070}

Usage:

120M B9C

Motor Grader:: 120M (S/N: R9A1-1; B9C1-790; B9N1-354; B9W1-209; D9W1-206); 12M (S/N: R9B1-1; B9F1-1102; B9R1-182,760-760); 140M (S/N: B9D1-3288; B9G1-251,1001-1056; D9G1-208,1001-1185; B9M1-1078); 14M (S/N: B9J105-1450; R9J100-250); 160M (S/N: B9E1-559; B9L1-120,150-506; B9T1-183; D9T1-176); 16M (S/N: B9H100-866; R9H100-224); 24M (S/N: B9K242-428)

Introduction

This Special Instruction provides the procedure to plug the weep hole for the steering and implement pump on certain M Series Motor Graders. This instruction also will remove the outer shaft seal for the steering pump.

Refer to the necessary parts list.

Prepare the machine for service after installation of the steering and implement pump. Follow the procedure in the Operation and Maintenance Manual for your machine.

Safety

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Do not attempt to assemble this machine until you read and you understand the assembly instructions.

Improper assembly procedures could result in injury or death.

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Personal injury can result from hydraulic oil pressure and hot oil.
Hydraulic oil pressure can remain in the hydraulic system after the engine has been stopped. Serious injury can be caused if this pressure is not released before any service is done on the hydraulic system.

Make sure all of the work tools have been lowered to the ground, and the oil is cool before removing any components or lines. Remove the oil filler cap only when the engine is stopped, and the filler cap is cool enough to touch with your bare hand.

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NOTICE

Care must be taken to ensure that fluids are contained during performance of inspection, maintenance, testing, adjusting, and repair of the product. Be prepared to collect the fluid with suitable containers before opening any compartment or disassembling any component containing fluids. Refer to Special Publication, NENG2500, "Dealer Service Tool Catalog" for tools and supplies suitable to collect and contain fluids on Cat products. Dispose of all fluids according to local regulations and mandates.

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When a hoist is used to lift any part or assembly, stand clear of the area under the part being raised. Always make sure that the hoist has adequate lifting capacity and the wire cable is not damaged.
Failure to follow this instruction could lead to injury or death.

Approximate weights of the components are shown in the table which follows.

Parts List

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Table 1
Required Parts
Item	Qty	Part Number	Description	Option
1	1	5H-1472	Ball	2 ⁽²⁾
2	1	9Y-8386	Gasket	1 - 2 ⁽¹⁾ ⁽²⁾
3	1	2S-7905	Pipe Plug	1 ⁽¹⁾

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^( 2 )	Repair option 2, install ball into weep hole
^( 1 )	Repair option 1, install plug into weep hole

Required Tool List

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Table 2
Part Number	Description
Not specified	Hammer
Not specified	Screwdriver
Not specified	Side cutters (or pliers)
Not specified	5/16" flat punch
Not specified	Drill bit set
Not specified	Tap set

Specifications for Cables, Chains, and Lifting Devices

Use approved cables, chains, and lifting devices in order to lift components. Refer to the weight from the manufacturer in order to determine the application when you select the following items: cable, chain and lifting devices. When you lift a component, the lift angle is critical. Refer to the Illustration that follows in order to see the effect of the lift angle on the working load limit.

Note: The lifting devices that are shown in this publication are not Caterpillar parts.

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Illustration 1	g00629745
Lift angles for lifting slings. (A) The load capacity is 100% of the working load limit for the sling. (B) The load capacity is 86% of the working load limit for the sling. (C) The load capacity is 70% of the working load limit for the sling. (D) The load capacity is 50% of the working load limit for the sling.