Service Bulletin

WBH-16 Fuel Tank Vent Valve and Vapor Hose Update

Product Group:

Concrete Buggies

Bulletin Type

Date Issued:

08/07/12

Service Bulletin No.

CB20120806

Models/Series Affected:

WBH-16

110401 ~ 120610

_____ Information Only

_____ Recommended Change

Details

Multiquip is alerting the owners of the WBH16-Series power buggies of updates required to the fuel tank. This change involves replacing the roll over valve located on the fuel tank with a vent valve and the addition of a fuel tank neck seal.

This is a critical update and failure to implement will result in improper operation and possible safety hazards including:

„

Restricted vapor flow resulting in excessive fuel tank pressure and carburetor flooding.

„

Spilled fuel may come in contact with hot engine components during refueling.

„

Fuel leaking from the carburetor and igniting during operation.

Please follow the installation instructions carefully and do not reuse components unless explicitly stated in the directions.

Parts Information

A

4

2

3

2

8

B

1

9

8

7

10

5

6

11

12

13

14

15

C

16

17

Item no.

12

13

14

15

16

10

11

8

9

C

17

5

6

3

4

7

1

2

A

B

Part no.

WBHEVAPKIT

521205

800056

492595

801130

492581

802255

517621

520833

506208

802405

491030

802006

521205B

801130

EM911011

802498

202772

203403

60004

Description

Kit, Evap & Fuell Tank Update

Kit, Evap Retrofit

Bolt, HHCC 1/4" NC x 3/4" G5

Washer, 1/4" NC

Clamp, Rubber Coated

Nut, Nylon 1/4" G8

Tension Clamp

Tension Clamp

3/16" Air Filter Hose

Worm Clamp

1/4" to 3/16" Hose Reducer

Plastic Tie-Wrap

Seal, Fuel Tank Neck

Kit, Vent Valve

Clamp, Rubber Coated

Pipe Plug 1/8"

Tension Band Clamp

Vent Valve

Grommet, Vent Valve

3/16" Fuel Hose

1

1

1

1

1

1

1

2

1

1

1

3

2

2

2

1

1

2

4

QtY.

Remarks

Includes Items B & C

Includes Items 1-11

Fuel Filter,Canister

Air Filter

5.5-Inches

Hose Reducer

Includes Items 12-17

Vent Valve

Fuel Tank

41" Long

Figure 1. Parts Identification

WBH-16 — seRvICe BulletIn CB20120806 — 08/07/12 — Page 1

ReMOval PROCeDuRe access Panel Removal

1. Turn the engine

ON.

2. Place the tub (Figure 2) in the vertical position by moving the dump control lever forward.

3. Turn the engine

OFF.

4. Position the support rod against the bottom of the tub.

Fuel shut-Off valve

1. Place the fuel shut-off valve (Figure 4), located at the base of the fuel tank in the

OFF position.

2. Next, remove the hose and clamp from the fuel shutoff valve port.

FUEL SHUT-OFF

VALVE

DUMP

CONTROL

LEVER

DUMP POSITION

WBH-16

TUB

SUPPORT

ROD

DISCONNECT

FUEL TANK HOSE

PLACE IN

OFF POSITION

REMOVE

FUEL HOSE

CLAMP

Figure 4. Fuel Shut-Off Valve (OFF)

Fuel tank Cover Removal

1. Remove the fuel tank cap from the fuel tank.

2. Next, remove the 8 screws and associated hardware that secure the fuel tank cover (Figure 5) to the buggy.

3. Remove fuel tank plastic cover from the buggy to expose the steel fuel tank.

Figure 2. Tub Dump Position

5. With the tub in the dump position remove the 8 screws and associated hardware that secure the access door

(Figure 3) to the buggy.

REMOVE

FUEL CAP

REMOVE PLASTIC

FUEL TANK COVER

REMOVE

ACCESS DOOR

REMOVE SCREW,

LOCK WASHER

AND FLAT WASHER

4 PLACES

WBH-16

REMOVE SCREW,

LOCK WASHER

AND FLAT WASHER

8 PLACES

WBH-16

REMOVE SCREW,

LOCK WASHER

AND FLAT WASHER

4 PLACES

Figure 5. Fuel Tank Cover Removal

Figure 3. Removing Access Door

6. Set access door and associated hardware aside in a safe place where they will not get damaged or lost.

WBH-16 — seRvICe BulletIn CB20120806 — 08/07/12 — Page 2

Fuel tank Removal

1. Remove and discard existing tension clamp (Figure 6) from the roll-over valve port.

2. Next, remove and discard existing fuel tank vapor hose from charcoal canister tank port. Retain tension clamp, it will be used later.

3. Remove the fuel tank from the buggy.

REMOVE AND

DISCARD EXISTING

TENSION CLAMP

EXISTING

ROLL-OVER

VALVE

FUEL

TANK

REMOVE AND

DISCARD EXISTING

FUEL TANK

VAPOR HOSE

5. To remove any harmful residue, vapors or fumes from the fuel tank, the fuel tank should be placed outside in a warm environment so that the tank can thoroughly dry.

6. With the fuel cap removed (Figure 8), place the fuel tank outside in the upright position with the fuel filler neck facing upwards and allow the fuel tank to dry. This may take 30-45 minutes.

REMOVE

FUEL CAP

FUEL

VAPOR/FUMES

FROM TANK

HEA

T

SOURCE

FUEL

TANK

TANK PORT

RETAIN EXISTING

TENSION CLAMP

P/N 517621

CHARCOAL

CANISTER

Figure 6. Tank Hose Disconnection

4. Next, turn fuel tank upside-down (Figure 7) and drain any fuel in the fuel tank into a suitable container.

BOTTOM

Figure 8. Drying The Fuel Tank

NOTICE

DO nOt proceed to the next step until the fuel tank

is thoroughly dry and all harmful residue, vapors and fumes have been removed from the tank.

Fuel tank Roll-Over valve Removal

1. Use a flat head screwdriver to remove the roll-over valve and rubber seal from the fuel tank as shown in

Figure 9.

FUEL

TANK

REMOVE AND DISCARD

ROLL-OVER VALVE

REMOVE AND DISCARD

RUBBER SEAL

FUEL TANK

FILLER NECK

FUEL

TANK

Figure 9. Removing Roll-Over Valve

Figure 7. Fuel Tank Drain

WBH-16 — seRvICe BulletIn CB20120806 — 08/07/12 — Page 3

Fuel tank Modification

The fuel tank requires modification to accommodate a new type vent valve and pipe plug. Follow the procedure below to modify the fuel tank.

DangeR

DO nOt perform any fuel tank modifications until all

vapors and fumes have been completely evaporated from the fuel tank.

In addition the fuel tank must be completely dry, no fuel and all fuel residue completely removed. The possibility exist of fire or explosion if fuel or combustible residue remains in the tank.

Failure to observe these conditions could start a fire causing severe bodily harm and serious damage to the equipment.

1. Place fuel tank on a suitable workbench free of dirt and debris.

2. Before tapping or drilling ensure tank is dry and all vapors have evaporated. Have a fire extinguisher nearby in case of fire.

3. Using a 1/8"-27 NPT thread tap (Figure 10), thread the hole where the existing roll-over valve was installed.

1/8”-27 NPT

THREAD TAP

FUEL TANK

EDGE

FUEL

TANK

STEP

DRILL

Figure 11. Vent Valve Drill Hole

Fuel tank Cleaning

Shavings from tapping and drilling of the fuel tank may have entered the fuel tank. To remove any debris or foreign matter that may have entered the fuel tank, perform the following procedure.

1. Pour solvent into the fuel tank, then flush thoroughly.

2. Repeat this process until all foreign matter and debris have been removed from the fuel tank.

3. Set fuel tank aside and let dry.

new Fuel tank 1/8" Pipe Plug Installation

1. Apply fuel resistant sealant (Figure 12) to the threads of the new 1/8-inch pipe plug (P/N EM911011) to be installed on the fuel tank.

2. Insert 1/8" fuel tank pipe plug into the threaded hole where roll-over valve was installed.

INSTALL

1/8” PIPE PLUG

P/N EM911011

THREAD

PIPE

SEALANT

FUEL

TANK

Figure 10. Pipe Plug Tap Hole

4. Next, using a step drill or equivalent drill bit, drill a 7/8inch diameter hole as shown in Figure 11. This hole is necessary for the new vent valve.

5. After the hole has been drilled, deburr the hole opening and remove any rough edges.

FUEL

TANK

Figure 12. 1/8" Pipe Plug Installation

WBH-16 — seRvICe BulletIn CB20120806 — 08/07/12 — Page 4

new Fuel tank vent valve Installation

1. Spray the inside and outside of the vent valve grommet with Windex™ or an equivalent solution as shown in

Figure 13. This will make it easy to fit the grommet onto the vent valve.

2. Twist and turn the vent valve while applying pressure to insert onto grommet.

3. Insert vent valve with grommet attached into fuel tank as shown in Figure 13. Please note orientation of vent valve port.

VENT

VALVE

WINDEX™

RUBBER

GROMMET

air Filter vapor Hose Modification

The 1/4-inch diameter vapor hose connecting the air filter to the charcoal canister needs to be shortened in length.

This is necessary to allow installation of a 1/4" to 3/16" hose reducer.

Perform the procedure below to modify the air filter vapor hose and install a new tension clamp (canister end).

1. At the charcoal canister (Figure 15) remove the air filter vapor hose and worm clamp from the charcoal canister

purge port. Discard worm clamp.

FUEL

TANK

Figure 13. Vent Valve Installation

side Panel Rubber Coated Clamp Installation

4. Install 2 new rubber coated clamps (P/N 801130) to the buggy left-side panel (Figure 14).

NOTE, these

clamps must be installed 180° opposite of each other.

5. From the operator's position, secure both clamps to the buggy's left-side panel using the supplied hardware, bolt (P/N 800056), washer (P/N 492595) and nut (P/N

492581).

INSIDE

INSTALL 2 NEW

RUBBER COATED

CLAMPS P/N 801130

AIR FILTER

WORM

CLAMP

(DISCARD)

AIR FILTER

VAPOR HOSE

WORM CLAMP

(DISCARD)

TANK PORT

VERIFY TENSION

CLAMP INSTALLED

P/N 517621

INLET

PORT

CUT TO

38-INCHES

(965 MM)

TENSION

CLAMP

(INSTALL)

P/N 502255

PURGE

PORT

CHARCOAL

CANISTER

BEFORE

180

°

NUT

P/N 492581

OUTSIDE

WASHER (2)

P/N 492595

SIDE-P

LEFT

BOLT

P/N 800056

ANEL

Figure 14. Air Filter/Fuel Tank

Vapor Hose Clamps

Figure 15. Air Filter Vapor Hose Components

2. Next, disconnect the other end of air filter vapor hose from the air filter inlet port. Discard worm clamp.

3. Place air filter vapor hose on a suitable work bench and cut to 38 inches (965 mm).

NOTICE

The air filter vapor hose needs to be supported to prevent kinking. This is accomplished by means of a rubber coated clamp installed on the buggy's left-side panel.

WBH-16 — seRvICe BulletIn CB20120806 — 08/07/12 — Page 5

4. Route one end of the air filter vapor hose thru the newly installed lower rubber coated hose support clamp on buggy left-side panel (Figure 16), then connect it to the purge port on the charcoal canister using tension clamp (P/N 802255).

5.

DO nOt attach the free end of the air filter vapor hose

to the air cleaner inlet port at this time.

Hose Reducer Installation

The hose reducer (Figure 16) is required to provide a better connection using the provided 3/16" hose to the air filter inlet port.

Perform the procedure below to install the 1/4" to 3/16" hose reducer (P/N 802405) and worm clamps (P/N 506208).

1. Locate the free end of the air filter vapor hose and using supplied worm clamp (P/N 506208) connect it to the

1/4" side of the hose reducer.

securing the Hose Reducer

1. Using the supplied tie-wrap (P/N 491030) secure the

1/4" to 3/16" hose reducer to the buggy as shown in

Figure 17.

TIE-WRAP

P/N 491030

EXISTING HOLE

HOSE

REDUCER

AIR FILTER

INSIDE

ANEL

LOWER

CLAMP

PURGE

PORT

TENSION

CLAMP

(INSTALL)

WORM

CLAMP

P/N 506208

(INSTALL)

WORM

CLAMP

P/N 506208

(INSTALL)

3/16”

1/4”

HOSE

REDUCER

P/N 802405

(INSTALL)

AIR FILTER

VAPOR HOSE

TENSION

CLAMP

P/N 802255

INLET

PORT

P/N 517621

AIR FILTER

HOSE

P/N 520833

(INSTALL)

5.5 FT.

(1.5 M)

CHARCOAL

CANISTER

CHARCOAL

CANISTER

AFTER

Figure 16. Hose Reducer Installation

2. Next, using the supplied worm clamp (P/N 506208) connect the supplied 5.5" section of hose (P/N 520833) to the 3/16" side of the hose reducer.

3. Finally, using the supplied tension clamp (P/N 517621) connect the free end of the 5.5 section of hose to the air filter inlet port.

Figure 17. Securing Hose Reducer

Fuel Filter Clamp Replacement

The existing worm clamps (2) that secure the fuel filter to the fuel hose lines need to be replaced with tension type clamps (2). Replace existing worm clamps as shown in

Figure 17.

1. When removing existing worms clamps from the fuel filter, fuel may begin spill. Wipe up any spilled fuel immediately.

2. Remove both existing worm clamps from the fuel filter.

Discard both worm clamps.

3. Install new replacement tension clamps (P/N 802255) in place of the worm clamps.

WBH-16 — seRvICe BulletIn CB20120806 — 08/07/12 — Page 6

REMOVE AND

DISCARD

EXISTING

WORM

CLAMP (2)

FUEL

LINE (IN)

BEFORE

FUEL

LINE (OUT)

FUEL

FILTER

INSTALL

TENSION

CLAMP (2)

P/N 802255

AFTER

Figure 18. Fuel Filter Tension Clamps

Fuel tank vapor Hose Clamp Installation

1. Cut and remove existing tie-wrap securing fuel tank vapor hose to fan shroud.

2. Secure rubber coated clamp (P/N 801130) to

fan

shroud (Figure 19) using the supplied hardware, bolt (P/N 800056), 2 washers (P/N 492595) and nut (P/N 492581).

INSTALL

NYLON NUT

P/N 492581

INSTALL RUBBER

COATED CLAMP

P/N 801130

INSTALL FLAT

WASHER (2)

P/N 492595

INSTALL BOLT

P/N 800056

FAN SHROUD

3. Place fuel tank on top of buggy side panels.

4. Connect the new fuel tank vapor hose line (P/N 60004) to the tank port on the charcoal canister (Figure 20) using the tension clamp from the original discarded vapor hose.

5. Route new fuel tank vapor hose thru newly installed upper rubber coated hose support clamp (Figure 14) on buggy left-side panel.

6. Next, route fuel tank vapor hose thru existing rubber coated clamp on the fan guard (Figure 20).

7. Lastly, connect fuel tank vapor hose to the fuel tank vent valve (Figure 20) and secure with tension clamp

(P/N 802498).

VENT

VALVE

INSTALL NEW

TENSION CLAMP

P/N 802498

FUEL

TANK

TANK

PORT

FAN

SHROUD

INSTALL NEW

FUEL TANK

VAPOR HOSE

P/N 60004

EXISTING

RUBBER

COATED

CLAMP

REUSE EXISTING

TENSION CLAMP

CHARCOAL

CANNISTER

Figure 20. Fuel tank Vapor Hose Routing

Figure 19. Installing Fuel Tank

Vapor Hose Clamp

WBH-16 — seRvICe BulletIn CB20120806 — 08/07/12 — Page 7

Fuel tank neck seal Installation

In some instances, gasoline spilled during refueling may run down the neck of the fuel tank and make contact with the hot muffler or other engine components.

To prevent this from occurring, a

fuel tank neck seal

must be installed over the fuel tank filler neck.

Perform the procedure below to install the fuel tank neck seal.

1. Place fuel tank plastic cover over fuel tank and secure both the fuel tank plastic cover and fuel tank to the buggy side panels.

2. Install new fuel tank neck seal (P/N 802006) as shown in Figure 21.

INSTALL

FUEL CAP

TETHER

INSTALL

TANK NECK SEAL

P/N 802006

INSTALL PLASTIC

FUEL TANK COVER

Reassembly

1. Reinstall fuel cap.

2. Reinstall buggy access door.

3. Connect main fuel hose line to fuel shut-off valve.

4. Place fuel shut-off valve in the

On position.

5. Refill fuel tank.

INSTALL SCREW,

LOCK WASHER

AND FLAT WASHER

4 PLACES

WBH-16

INSTALL SCREW,

LOCK WASHER

AND FLAT WASHER

4 PLACES

Figure 21. Tank Neck Seal Installation

WBH-16 — seRvICe BulletIn CB20120806 — 08/07/12 — Page 8

Warranty Information

Campaign Reference no. 20120806

Please contact Chris Fairchild or Wendy Sanchez @ 1-800-421-1244 for warranty claim number and warranty form.

labor allowance: Flat Rate to install – 2.5 Hours.

WBH-16 — seRvICe BulletIn CB20120806 — 08/07/12 — Page 9

Service Bulletin

WBH-16 Fuel Tank Vent Valve and Vapor Hose Update

HERE’S HOW TO GET HELP

PLEASE HAVE THE MODEL AND SERIAL

NUMBER ON-HAND WHEN CALLING

United StateS

Multiquip Corporate Office

18910 Wilmington Ave.

Carson, CA 90746

Contact: [email protected]

Service Department

800-421-1244

310-537-3700

Technical Assistance

800-478-1244

Tel. (800) 421-1244

Fax (310) 537-3927

Fax: 310-537-4259

Fax: 310-943-2238

mexico

MQ Cipsa

Carr. Fed. Mexico-Puebla KM 126.5

Momoxpan, Cholula, Puebla 72760 Mexico

Contact: [email protected]

Tel: (52) 222-225-9900

Fax: (52) 222-285-0420

MQ Parts Department

800-427-1244

310-537-3700

Warranty Department

800-421-1244

310-537-3700

Fax: 800-672-7877

Fax: 310-637-3284

Fax: 310-943-2249

United Kingdom

Multiquip (UK) Limited Head Office

Unit 2, Northpoint Industrial Estate,

Globe Lane,

Dukinfield, Cheshire SK16 4UJ

Contact: [email protected]

Tel: 0161 339 2223

Fax: 0161 339 3226

Canada

Multiquip

4110 Industriel Boul.

Laval, Quebec, Canada H7L 6V3

Contact: [email protected]

Tel: (450) 625-2244

Tel: (877) 963-4411

Fax: (450) 625-8664

© COPYRIGHT 2012, MULTIQUIP INC.

Multiquip Inc and the MQ logo are registered trademarks of Multiquip Inc. and may not be used, reproduced, or altered without written permission. All other trademarks are the property of their respective owners and used with permission.

The information and specifications included in this publication were in effect at the time of approval for printing. Illustrations, descriptions, references and technical data contained in this document are for guidance only and may not be considered as binding. Multiquip Inc. reserves the right to discontinue or change specifications, design or the information published in this publication at any time without notice and without incurring any obligations.

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