284-0416 Bulk Fuel Filtration Group 200 GPM Flow Rate{0599, 0680, 0706, 0782, 1250, 1280} Caterpillar

Caterpillar Products: All

Introduction

Important Safety Information

Illustration 1	g02139237
Think Safety

European Union Compliant, CE marked

Most accidents that involve product operation, maintenance, and repair are caused by failure to observe basic safety rules or precautions. An accident can often be avoided by recognizing potentially hazardous situations before an accident occurs. A person must be alert to potential hazards. This person should also have the necessary training, skills, and tools to perform these functions properly.

Improper operation, lubrication, maintenance, or repair of this product can be dangerous and could result in injury or death.

Do not operate or perform any lubrication, maintenance, or repair on this product until you have read and understood the Tool Operating Manual.

Safety precautions and warnings are provided in this manual and on the product. If these hazard warnings are not heeded, bodily injury or death could occur to you or to other persons.

The hazards are identified by the "Safety Alert Symbol" and followed by a "Signal Word" such as "DANGER", "WARNING", or "CAUTION". The Safety Alert "WARNING" label is shown below.

A non-exhaustive list of operations that may cause product damage are identified by "NOTICE" labels on the product and in this publication.

Caterpillar cannot anticipate every possible circumstance that might involve a potential hazard. The warnings in this publication and on the product are, therefore, not all inclusive. If a tool, procedure, work method, or operating technique that is not recommended by Caterpillar is used, the operator must be sure that the procedures are safe. The operator must also be sure that the product will not be damaged or made unsafe by any unspecified procedures.

The information, specifications, and illustrations in this publication are based on information that was available at the time that the publication was written. The specifications, torques, pressures, measurements, adjustments, illustrations, and other items can change at any time. These changes can affect the service that is given to the product. Obtain the complete and most current information before you start any job.

When replacement parts are required for this product Caterpillar recommends using Caterpillar replacement parts or parts with equivalent specifications including, but not limited to, physical dimensions, type, strength, and material.

Literature Information

This manual contains safety information, operation instructions and maintenance information and should be stored with the tool group.

Some photographs or illustrations in this publication may show details that can be different from your service tool. Guards and covers might have been removed for illustrative purposes.

Continuing improvement and advancement of product design might have caused changes to your service tool, which are not included in this publication.

Whenever a question arises regarding your service tool or this publication, consult Dealer Service Tools (DST) for the latest available information.

Safety Section

The Safety Section lists basic safety precautions.

Read and understand the basic precautions listed in the Safety section before operating or performing maintenance and repair on this service tool.

General Information Section

The General Information Section describes tooling functions and features. The section provides useful information on individual parts, additional tooling, and resources.

Operation Section

The Operation Section is a reference for the new operator and a refresher for the experienced operator.

Photographs and illustrations guide the operator through correct procedures for using the tool group.

Operating techniques outlined in this publication are basic. Skill and techniques develop as the operator gains knowledge of the service tool and the tools capabilities.

Maintenance Section

The Maintenance Section is a guide to tool inspection, cleaning, storage, and tool disposal

Service Parts Section

The Service Parts Section is a reference for parts identification and available part numbers.

Safety Icon Nomenclature

Personal Protection/Important Information

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Personal Protection/Important Information

Prohibited Action

No Smoking

Hazard Avoidance

Crushing Hazard (foot)

Crushing Hazard (hand)

Pinch Point

Fire Hazard

Electrical Shock - Hazard

Fire Hazard

Safety Section

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At operating temperature, the hydraulic tank is hot and under pressure. Hot oil and components can cause personal injury. Do not allow hot oil or components to contact skin. Remove the filler cap only when the engine is stopped, and the filler cap is cool enough to touch with your bare hand. Remove the filler cap slowly in order to relieve pressure.

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Personal injury or death can result from escaping fluid under pressure. Escaping fluid under pressure, even a very small pin-hole size leak, can penetrate body tissue and cause serious injury and possible death. If fluid is injected into your skin, it must be treated immediately by a doctor familiar with this type of injury. Always use a board or cardboard when checking for a leak.

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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, "Caterpillar Dealer Service Tool Catalog" for tools and supplies suitable to collect and contain fluids on Caterpillar products. Dispose of all fluids according to local regulations and mandates.

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NOTICE
To prevent dirt and contaminants from entering the hydraulic system, always plug or cap the lines, fittings, or hoses as they are disconnected. This action also lessens the chance of oil spills.

General Information Section

Introduction

Illustration 3	g02726021

The 284-0416 Bulk Fuel Filtration System is an integrated unit designed to remove particulates and water from diesel fuel. The maximum rated flow for this system is 757 L/min (200 US gpm).

The system consists of two particulate pre-filter vessels, one fuel/water separator vessel, and a slug/differential control valve mounted on a base/drip pan assembly. Inlet and outlet ball valves are included on the system. All pressure containing components are welded carbon steel or ductile iron designed for use in all environments.

Pre-filter elements remove most of the solid particulate contamination. Coalescer elements and separator canisters remove water and filter the fuel. If restriction in the system (clogged filter elements or high water level) exceeds 172 kPa (25.0 psi), the slug control valve will close, stopping fuel flow.

Filters should be replaced and separator canisters cleaned every 6 months, or whenever differential pressure reaches 138 kPa (20.0 psi).

The slug valve also limits flow through the system to 757 L/min (200 US gpm) maximum.

The system is equipped with a pressure relief valve located between the pre-filter vessel and water separator vessel. The pressure relief valve prevents the system from being pressurized above 1034 kPa (150.0 psi).

Applications

The Caterpillar Bulk Fuel Filtration System is intended for use in any application where users store fuel for machines or engines. The filter unit is installed in series between the fuel pump on the fuel storage tank and the fueling station, or fuel transport vehicle.

Note: The system does not require electrical power unless it is used in cold climates. Optional 307-0655 Electric Heater (120 V) or 307-2569 Electric Heater (220 V) are available for cold climates where water removed from the fuel may freeze.

References

Special Instruction, PEHJ0156, "CAT Bulk Fuel Filtration Systems".

Special Instruction, PELJ0671, "Bulk Fuel Filtration".

Special Instruction, SEBU6250, "Caterpillar Machine Fluid Recommendations".

Specifications

Table 1

284-0416 Specifications
Specification	Dimension
Overall Base Length	256.5 cm (101 inch)1
Overall Base Width	104.1 cm (41 inch)2
Overall Height	193 cm (76.0 inch)3
Unit Weight	776 kg (1710 lb)4
Maximum Operating Pressure	1034 kPa (150.0 psi)
Differential Slug Valve Operational Pressure	0 to 172 kPa (0 to 25.0 psi)
Inlet & Outlet Connections	5.1 cm (2.0 inch) ANSI B16.5
Fuel	No. 2 Diesel
Fluid Capacity (volume)	166 L (44 US gal)3
1 Includes drain plug 2 Includes mounting tabs 3 Approximate 4 Shipping weight 844 kg (1860.7 lb)

Additional Contact Information

For additional product support questions concerning this tool, contact the Caterpillar Dealer Service Tools Hotline at:

USA: 1-800-542-8665, Option 1

International: 1-309-578-7372

Email: dealerservicetool_hotline@cat.com

Nomenclature

Illustration 4	g02726022

Table 2

Nomenclature
Item	Description
(1)	Base
(2)	Inlet Port
(3)	Inlet Ball Valve
(3a)	Inlet Valve Handle (OPEN/CLOSE)
(4)	Pre-filter Vessel (2 qty)
(5)	Differential Pressure Gauge (2)
(6)	Pressure Relief Valve
(7)	Coalescer (Water Separator) Vessel
(8)	Sight Glass (Water Level)
(9)	Unfiltered Sample Port
(10)	Optional Heater Port
(11)	Manual Water Drain Valve (normally closed)
(12)	Water Drain Valve (normally open)
(13)	Automatic Water Drain Outlet
(14)	Water Drain Control Valve
(15)	Isolation Valve
(16)	Automatic Air Release Valve
(17)	Filtered Sample Port
(18)	Differential Pressure Slug Valve
(19)	Water Meter
(20)	Outlet Ball Valve
(20a)	Outlet Valve Handle (OPEN/CLOSE)
(21)	Outlet Port
(22)	Base Drain Plug
(23)	Base Mounting Brackets

Operation Section

Note: IMPORTANT: Follow all applicable industry standards and all applicable governmental, environmental, and safety guidelines, practices, regulations, and mandates when installing, operating, and maintaining the bulk fuel filtration system.

Installation

1. The shipping weight of the 284-0416 Bulk Fuel Filtration System is 844 kg (1861 lb). Uncrate the unit and use a lifting device or fork lift truck with adequate capacity to move and position the bulk fuel filtration system between the fuel supply tank and fueling station.

   Note: The bulk fuel filtration system base has channel openings for lift truck forks, located at the load center of gravity.

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Illustration 5	g02726036
(23) Mounting Brackets

2. Four mounting brackets (23) are attached to base (1). Use the brackets to secure the base to a level foundation.

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Illustration 6	g02726038
(13) Water Drain

3. Use approved pipe or hose (dealer supplied) to extend automatic water drain outlet (13) to a water storage container or appropriate disposal system.

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Illustration 7	g02726041
(6) 150 psi Pressure Relief Valve

4. Use approved high-pressure pipe (dealer supplied) to extend 150 psi pressure relief valve (6) outlet to an inlet on the fuel reservoir or an approved fuel storage container.

Note: All fluid and materials used with or on the bulk fuel filtration system must be handled and disposed of properly. This is very important when working with fuels. Follow all Federal, State, and Local regulations on disposal of waste products.

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Illustration 8	g02726042
(4) Pre-filter Vessel (2 qty) (4a) Pre-filter Vessel Lid (2 qty) (7) Coalescer Vessel (7a) Coalescer Vessel Cover

5. Remove pre-filter vessel lids (4a) and coalescer vessel cover (7a). Inspect and make sure that filter elements are installed properly and element hold-downs are tight.

Note: For more information on filter element service (removing and installing lids/covers), refer to the ""Maintenance Section" " in this manual.

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Illustration 9	g02726046
(4) Pre-filter Vessel (2 qty) (4a) Pre-filter Vessel Lid (2 qty) (7) Coalescer Vessel (7a) Coalescer Vessel Cover

6. Install filter vessel lids/covers.

   1. Install pre-filter vessel lid (4a) and turn T-handle clockwise (CW) hand tight.

   2. Install coalescer vessel cover (7a) and tighten bolts to 68 N·m (50 lb ft).

Note: Make sure that the filtration unit is grounded to the fuel supply system, either through metal piping or approved ground cables.

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Illustration 10	g02726047
(2) Bulk Fuel Filtration System Inlet

7. Use approved pipe or fuel hose (dealer supplied) to connect bulk fuel filtration system inlet (2) to the fuel supply. Make sure that the connection is tight and leak free.

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Illustration 11	g02726050
(21) Bulk Fuel Filtration System Outlet

8. Use approved pipe or fuel hose (dealer supplied) to connect bulk fuel filtration system outlet (21) to the fueling station. Make sure that the connection is tight and leak free.

Start-up Procedure

After installation is complete, perform the start-up procedure before dispensing fuel through the bulk fuel filtration system. Also, use this procedure after replacing filter elements, or any operation where the bulk fuel filtration system is opened.

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Illustration 12	g02726058
(3a) Inlet Ball Valve Handle In OPEN Position (20a) Outlet Ball Valve Handle in OPEN Position

1. OPEN inlet and outlet ball valves.

   1. Fully OPEN inlet ball valve by moving handle (3a) so it is aligned with the inlet pipe, as shown.

   2. Fully OPEN outlet ball valve by moving handle (20a) so it is aligned with the outlet pipe, as shown.

2. Turn ON the fuel supply pump at the fuel supply.

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Illustration 13	g02726060
(4) Pre-filter Vessels (2 qty) (4b) Vent Valves (2 qty) (7) Coalescer Vessel (16) Automatic Air Release Valve

3. Vent air from both pre-filter vessels (4), one at a time.

   1. Use a wrench (dealer supplied) to slowly OPEN vent valve (4b) by turning counterclockwise (CCW). Allow a small amount of fuel to flow out.

   2. Immediately CLOSE vent valve (4b) by turning clockwise (CW). This ensures that the pre-filter vessels are full of fuel and air is not trapped in the system.

      Note: Coalescer vessel (7) is equipped with automatic air release valve (16). Venting does not require manual operation.

Note: All fluid and materials used with or on the bulk fuel filtration system must be handled and disposed of properly. This is very important when working with fuels. Follow all Federal, State, and Local regulations on disposal of waste products.

4. Once air is vented out of both pre-filter vessels and vent valves (4b) are securely CLOSED, turn OFF the fuel supply pump.

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Illustration 14	g02726064
(3a) Inlet Ball Valve Handle In CLOSED Position (20a) Outlet Ball Valve Handle In CLOSED Position

5. CLOSE inlet and outlet ball valves.

   1. Fully CLOSE inlet ball valve by moving handle (3a) away from the inlet pipe, as shown.

   2. Fully CLOSE outlet ball valve by moving handle (20a) away from the outlet pipe, as shown.

6. Note the water meter (19) reading and record for future reference.

Operation

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Illustration 15	g02726070
(3a) Inlet Ball Valve Handle In OPEN Position (20a) Outlet Ball Valve Handle in OPEN Position

1. OPEN inlet and outlet ball valves.

   1. Fully OPEN inlet ball valve by moving handle (3a) so it is aligned with the inlet pipe, as shown.

   2. Fully OPEN outlet ball valve by moving handle (20a) so it is aligned with the outlet pipe, as shown.

2. Turn ON the fuel supply pump at the fuel supply.

3. Dispense fuel from fueling station.

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Illustration 16	g02726074
(5) Differential Pressure Gauges

4. Check differential pressure gauges (5) to monitor the pressure restriction of each filter vessel.

   Note: A differential reading of 138 kPa (20 psi) or above can indicate that filter element replacement service is required. Refer to the ""Maintenance Section" " in this manual.

Note: Differential pressure gauges (5) are equipped with follower needles which will stay at the highest pressure recorded even after fuel flow has stopped. Reset the follower needles to zero after recording readings.

5. When fueling is complete, turn OFF the fuel supply pump.

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Illustration 17	g02726077
(3a) Inlet Ball Valve Handle In CLOSED Position (20a) Outlet Ball Valve Handle In CLOSED Position

6. CLOSE inlet and outlet ball valves.

   1. Fully CLOSE inlet ball valve by moving handle (3a) away from the inlet pipe, as shown.

   2. Fully CLOSE outlet ball valve by moving handle (20a) away from the outlet pipe, as shown.

Note: To ensure fuel quality, have fuel cleanliness tested on a regular basis. For more information on fuel quality testing, refer to the latest version of Special Instruction, SEBU6250, "Caterpillar Machine Fluid Recommendations".

Maintenance Section

Shutdown Procedure

Perform the Shutdown Procedure before replacing filter elements, disconnecting inlet and/or outlet lines, or making any repairs to the system.

1. Turn OFF fuel supply pump.

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Illustration 18	g02726079
(3a) Inlet Ball Valve Handle In CLOSED Position (20a) Outlet Ball Valve Handle In OPEN Position

2. Position inlet and outlet ball valves.

   1. Fully CLOSE inlet ball valve by moving handle (3a) away from the inlet pipe, as shown.

   2. Fully OPEN outlet ball valve by moving handle (20a) so it is aligned with the outlet pipe, as shown.

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Illustration 19	g02726084
(4) Pre-filter Vessel (4b) Vent Valve (7) Coalescer Vessel (16) Automatic Air Release Valve

3. Drain approximately 166 L (44 US gal) of fuel from pre-filter and coalescer vessel by dispensing fuel into an approved tank or container.

   1. To aid fuel drain-down from the pre-filter vessels (4), use a wrench (dealer supplied) to slowly OPEN pre-filter vessel vent valves (4b) by turning counterclockwise (CCW).

   2. After fuel is drained, securely CLOSE both vent valves by turning clockwise (CW).

      Note: The coalescer vessel (7) is equipped with automatic air release valve (16). Venting does not require manual operation.

4. If the system will be moved to another reservoir or to storage, disconnect and drain inlet, outlet, and all other lines and/or hose connections.

Note: All fluid and materials used with or on the bulk fuel filtration system must be handled and disposed of properly. This is very important when working with fuels. Follow all Federal, State, and Local regulations on disposal of waste products.

Filter Element Replacement

Replace all filter elements every six months or whenever differential pressure reaches 138 kPa (20 psi), whichever comes first.

Replace Pre-filter Elements

1. Complete Steps 1 through 3 in the Shutdown Procedure section in this manual.

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NOTICE
To prevent poor filtration and/or damage to components, vessels must be completely drained and accumulated contaminates removed annually, or as needed. Completely clean out any debris from inside the vessels.

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Illustration 20	g02726094
(4) Pre-filter Vessel (4a) Pre-filter Vessel Lid (4b) Manual Air Vent Valve (4c) T-handle (4d) Vessel Lid Seal (4e) Element Hold-down Plate (4f) Pre-filter Element

2. Remove dirty pre-filter elements from pre-filter vessels.

   Note: There are two pre-filter vessels. Make sure to replace pre-filter elements and lid seals in both pre-filter vessels.

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   Illustration 21	g02726103
   (4) Pre-filter Vessel (4a) Pre-filter Lid (4c) T-handle

   1. Turn T-handle (4c) counterclockwise (CCW) to loosen. Remove prefilter vessel lid (4a) .

      Note: The pre-filter vessel lid weighs approximately 6.4 kg (14 lb).

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   Illustration 22	g02726109
   (4) Pre-filter Vessel (4e) Element Hold-down Plate (4f) Pre-filter Element

   2. Remove and save the pre-filter element hold-down plate (4e) .

   3. Remove pre-filter element (4f) and discard.

      Note: Filter elements will be wet and heavy. If necessary, get help or use a lifting device with adequate capacity to remove the elements.

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   Illustration 23	g02726115
   (4) Pre-filter Vessel (4f) Pre-filter Element

   4. Clean contaminants and debris from the inside of the pre-filter vessels (4) annually, or as necessary to maintain cleanliness.

      Note: All fluid and materials used with or on the bulk fuel filtration system must be handled and disposed of properly. This is very important when working with fuels. Follow all Federal, State, and Local regulations on disposal of waste products.

3. Install new pre-filter element.
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   Illustration 24	g02726126
   (4) Pre-filter Vessel (4f) Pre-filter Element

   1. Install new pre-filter element (4f) by lowering straight down into the pre-filter vessel (4). Make sure the pre-filter element is centered on the bottom of the vessel.
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   Illustration 25	g02726134
   (4) Pre-filter Vessel (4e) Element Hold-down Plate (4f) Pre-filter Element

   2. Install element hold-down plate (4e) .

   3. Remove and discard vessel lid seal (4d) and replace with new seal included with pre-filter element. Lubricate the seal with clean diesel fuel before installation.
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   Illustration 26	g02726141
   (4) Pre-filter Vessel (4a) Pre-filter Vessel Lid (4c) T-handle (4d) Vessel Lid Seal

   4. Install pre-filter vessel lid (4a) making sure that the seal is correctly seated. Turn T-handle (4c) clockwise (CW) to hand tighten and secure lid.

      Note: The pre-filter vessel lid weighs approximately 6.4 kg (14 lb).

4. Repeat the procedure for the other pre-filter vessel.

Replace Coalescer and Separator Filter Element

1. Complete Steps 1 through 3 in the Shutdown Procedure section in this manual.

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NOTICE
To prevent poor filtration and/or damage to components, vessels must be completely drained and accumulated contaminates removed annually, or as needed. Completely clean out any debris from inside all vessels.

2. Remove water separator canisters and coalescer element.
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   Illustration 27	g02726143
   (7) Coalescer Vessel (7a) Coalescer Vessel Cover

   1. Use wrenches (dealer supplied) to loosen and remove fasteners securing coalescer vessel cover (7a). Save all hardware for reuse.
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   Illustration 28	g02726146
   (7j) Cover Lift Bolt (7k) Pivot Bolt

   2. Use a wrench (dealer supplied) to turn cover lift bolt (7j) clockwise (CW), to slightly raise cover (7a). Rotate cover on pivot bolt (7k) just enough to gain access to coalescer filter.

      Note: Vessel cover weighs 42.6 kg (94 lb). Use caution when rotating cover.

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   Illustration 29	g02726148
   (7b) Filter Nut (7i) Bracket Nut

   3. Use a socket wrench (dealer supplied) to loosen and remove filter nuts (7b) and bracket nuts (7i). Save nuts for reuse.
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   Illustration 30	g02726150
   (7h) Retainer Plate

   4. Remove and save retainer plate (7h) .
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   Illustration 31	g02726155
   (7d) Washer Seals (one coalescer element removed from illustration for clarity)

   5. Remove and save washer seals (7d) .
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   Illustration 32	g02726164
   (7) Typical Coalescer Vessel (7e) Typical Separator Canister (7f) Typical Coalescer Element

   6. Coalescer elements (7f) are located inside separator canisters (7e). Remove each assembly from vessel and separate the components.

      Note: Filter elements will be wet and heavy. If necessary, get help or use a lifting device with adequate capacity to remove the elements.

   7. Clean contaminants and debris from separator canisters (7e). Replace any canisters that are damaged or corroded.

   8. Clean contaminants and debris from the inside of the coalescer vessel (7) annually, or as necessary to maintain cleanliness.

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Illustration 33	g02726168
(7) Typical Coalescer Vessel (7e) Typical Separator Canister (7f) Typical Coalescer Element

3. Install clean water separator canisters and new coalescer elements.

   1. Install new coalescer elements (7f) inside coalescer vessel (7), centered over threaded rods.

   2. Install water separator canisters (7e) over coalescer filter elements (7f) .
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   Illustration 34	g02726170
   (7d) Washer Seal (7e) Coalescer Canister (7f) Filter Element (one coalescer element removed from illustration for clarity)

   3. Install washer seal (7d) on each threaded rod.
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   Illustration 35	g02726173
   (7b) Filter Nut (7h) Retainer Plate (7i) Bracket Nut

   4. Install retainer plate (7h), filter nuts (7b), and bracket nuts (7i). Do not over tighten nuts.
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   Illustration 36	g02726174
   (7g) Typical Coalescer Vessel Seal

   5. Remove coalescer vessel seal (7g) and replace with new seal included in element replacement kit.

      Note: Make sure that seal groove is clean and free of debris before installing a new seal.

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   Illustration 37	g02726178
   (7j) Cover Lift Bolt (7k) Pivot Bolt

   6. Rotate coalescer vessel cover (7a) over coalescer vessel (7) and use wrench (dealer supplied) to turn cover lift bolt (7j) counterclockwise (CCW) to completely lower cover.

      Note: Vessel cover weighs 42.6 kg (94 lb). Use caution when rotating cover.

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   Illustration 38	g02726179
   (7) Coalescer Vessel (7a) Coalescer Vessel Cover

   7. Secure coalescer vessel cover (7a) to coalescer vessel (7) with hardware removed earlier. Tighten all bolts to 68 N·m (50 lb ft).

Clean The Filtration System

1. For ease of operation and maintenance, clean the unit with a non-solvent based cleaner after filter replacement, or as needed.

2. Remove dirt and debris from the base after filter replacement, or as needed.

3. Base (1) features base drain plug (22). Remove the plug to drain accumulated fluids into an approved container. Reinstall the plug.

   Note: All fluid and materials used with or on the bulk fuel filtration system must be handled and disposed of properly. This is very important when working with fuels. Follow all Federal, State, and Local regulations on disposal of waste products.

4. Wipe gauge lens and sight glass with a clean, dry cloth to maintain visibility.

Start up After Maintenance

Perform the Start-up Procedure after replacing filter elements, or any other maintenance where the bulk fuel filtration system is opened.

For step by step information, refer to the ""Start-up Procedure" " Section in the ""Operation Section" " of this manual.

Slug Valve Reset

Differential fluid pressure above 172 kPa (25 psi), caused by filter element restrictions, will result in the slug valve closing, stopping all fuel flow through the bulk fuel filtration system. Before refueling can resume, do the following:

1. Turn OFF the fuel supply pump.

2. CLOSE inlet and outlet ball valves.
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   Illustration 39	g02726184
   (3a) Inlet Ball Valve Handle In CLOSED Position (20a) Outlet Ball Valve Handle In CLOSED Position

   1. Fully CLOSE inlet ball valve by moving handle (3a) away from the inlet pipe, as shown.

   2. Fully CLOSE outlet ball valve by moving handle (20a) away from the outlet pipe, as shown.

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Illustration 40	g02726189
(5) Differential Pressure Gauges

3. Check both differential pressure gauge (5) follower needles for readings above 172 kPa (25 psi) to help identify which filters are restricted.

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Illustration 41	g02726191
Typical Slug Valve (18) Shown in SET Position

4. Once all restrictions are corrected, reset slug valve (18) by moving lever from TRIPPED position to SET position.

Note: If slug valve (18) will not reset, or immediately closes again, refer to the ""Troubleshooting" " Section in this manual, or contact your local Cat dealer for assistance.

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NOTICE
Slug valve is factory set to 172 kPa (25 psi) differential pressure. Do NOT adjust factory setting. Changing the setting can result in improper fuel filtration and damage to bulk fuel filtration system components.

Note: To ensure fuel quality, have fuel cleanliness tested on a regular basis. For more information on fuel quality testing, refer to the latest version of Special Instruction, SEBU6250, "Caterpillar Machine Fluid Recommendations".

Service Parts

Illustration 42	g02726195
(24) Typical Pre-Filter Element (25) Typical Coalescer Element (26) Typical Separator Canister

Table 3

Service Parts
Item	Part No	Description	Qty Req
(24)	284-0436	Pre-filter Element Kit 1	2
(25)	284-0441	Coalescer Element Kit 2	1
(26)	301-9814	Separator Canister 3	5
-	307-0655	Optional Heater (120 VAC)	1
-	307-2569	Optional Heater (240 VAC)	1
1 Includes one pre-filter element and one pre-filter vessel O-ring seal. 2 Includes five coalescer elements and one coalescer vessel O-ring seal. 3 Separator canisters do not require replacement unless damaged or corroded.

Troubleshooting

Table 4

Troubleshooting Chart
Problem	Possible Cause	Possible Solution
No fuel flow.	Inlet or outlet valve is closed.	Completely open inlet/outlet valve.
	Fuel hose is kinked.	Straighten hose and/or provide larger hose.
	Automatic slug valve shutdown.	Check differential pressure gauge follower needles for differential pressure reading greater than 172 kPa (25 psi). The slug valve will close if filters are restricted. Change filter elements and reset slug valve.
		Check sight glass for high water accumulation. Wait until system purges water or drain water manually. Reset slug valve.
Differential gauge reading greater than 69 kPa (10 psi) at start-up.	Air in the system.	Open vent valve at top of pre-filter vessel to release trapped air.
Differential gauge reading greater than 172 kPa (25 psi).	Filter elements are restricted.	Replace filter elements and clean vessels. Reset slug valve, if necessary.

Maintenance Record

Replace filters at least every 6 months. Clean debris from vessels annually, or as needed to maintain cleanliness.

Table 5

284-0416 Bulk Fuel Filtration Group Maintenance Record
Date	Maintenance Description	Performed By