1.03.019 GM 5.7 (350) Water Pump Fan Hub Removal removal and installation procedure

Purpose

The purpose of this procedure is to establish the minimum requirements for removing and installing the engine water pump Fan Hub on General Motors 5.7 Vortec style engines as laid out in this procedure.

Procedure

This procedure applies to all General Motors 5.7 Vortec style engines on Flogistix skids equipped with the General Motors 5.7 Vortec engine drive units that are currently in service in the Field, Test Loop, at a Repair Shop, or in Storage Yards.  Flogistix Service Technicians will perform the torque procedure as outlined in this procedure.  

Before any work is performed a JSA needs to be done according to Flogistix procedure along with any Customer requirements before any work is started.

GM 5.7 Water pump Fan hub removal procedure

The procedure of removing the threaded Fan hub off of the Water Pump can be done with it mounted on the engine or with it removed from the engine.  

For Removal of the the 5.7 Water Pump follow the procedure 1.03.016 with the included link  1.03.016 GM 5.7 (350) Water Pump removal and installation procedure 

If the Water Pump is still mounted on the engine the Serpentine belt will need to be removed.  Pay close attention to how the Serpentine belt is routed around the various sheaves on the engine.    The belt will need to be reinstalled on the engine after the Fan hub has been removed and replaced.

This procedure will require a small pipe wrench and a larger pipe wrench being an 18" or larger size or a large adjustable pliers that is large enough to fit the outside diameter of the Fan hub.

Using a small pipe wrench with it adjusted to almost the smallest setting, install it as illustrated in the example below, to where the thin Belt Sheave is between the Jaws of the small pipe wrench.

Adjust the larger Pipe wrench to fit the outer diameter of the Fan hub.  The fan hub is threaded on the water pump with standard rotation threads.  If standing in front of the engine looking at the water pump the Fan Hub will need to be turned Counter Clockwise to be removed. 

Put the large pipe wrench on the outer diameter of the Fan hub as illustrated in the example below. 

Letting the small pipe wrench move against the water pump housing when rotating the sheave,  watching out for sharp edges and pinch points apply downward force on the large pipe wrench to loosen the Fan Hub.  

Once the Fan hub comes loose it should be easily spun off by hand.  As shown in the example below

To install the Fan Hub reverse the same procedure for removing the Fan hub.

After removing or installing the Fan Hub, inspect the Fan Hub and belt Sheave for any damages.  Replace if any Damage to Fan Hub or Belt Sheave is found.

**  There are Specialty Tools made for removing the Fan Hub from the Water pump.  The use of these Specialty Tools if available would eliminate having to use the two pipe wrenches as mentioned in this procedure.

Responsibilities

Management - Management is responsible for implementing, supporting, and enforcing the requirements of this procedure to their respective locations/area.

EHSS - Responsible to assist in the implementation of this procedure and to review for effectiveness.

Employees, Contractors, Vendors, ETC. - Are responsible to follow the follow the requirements outlined in this procedure and ask for assistance

Scope

This procedure applies to all General Motors 5.7 Vortec style Natural Gas Engines and is applicable to all Flogistix employees, contractors, and temporary employees.

Hazards

Employees need to be aware of the possibility of extremely hot exhaust pipe surfaces, potential exposure and the inhalation of engine exhaust.  Employees should be aware that units could contain flammable and toxic gasses.  Potential for the possible hazards of gas ignition or fire, hot surfaces & fluids, rotating equipment.  Risk of possible concentration of H2S.  Hazardous gases could be in the units pressure vessels, cooler, or associated piping and risk of inhalation of hazardous gas fumes.  

Safety

All Personal Protective Equipment (PPE) for normal Field Mechanical duties apply for this procedure.  

Four Gas Monitor, which is outlined in the Flogistix EHSS Manual, PPE Section 8, Procedure 8.3 

This procedure applies to all units in service in the field, at a service shop, or in any storage yard.

Insure Flogistix personnel have proper safety certification or site orientation if required by the Flogistix Customer.

Insure Flogistix personnel adhere to all Customers safety practices.

Proper use of required tools 

Training

All employees shall be initially trained on the following topics:

• Employee Personal Protective Equipment (PPE)

• Lock Out Tag Out (LOTO) procedure according to Flogistix policy

• Methods and Observations that may be used to detect the presence or release of a hazardous chemicals or gas in the work place

Tools & Equipment Required

All employees performing this procedure shall be required to have the listed tools to perform job tasks:

• All required PPE according to Flogistix Safety Policy

• Lock Out Tag Out LOTO items to properly perform LOTO procedure according to Flogistix policy

• Basic Hand Tools to remove any Fan Guards, Serpentine Belt, or Water Pump removal.

• Small Pipe Wrench and Large Pipe Wrench (18" or larger) or (Specialty Water Pump Hub and Clutch removal Tools)

Approvals

Field Service approved by:

Date:

Engineering approved by: 

Date: 

EHSS approved by:

Date: