CAMPAIGN: FUEL TANK VENTING INSTALL FUEL TANK VENT
Subject: PRODUCT SAFETY CAMPAIGN 87CI6 FUEL TANK VENTING
Model and Year: 1985-87 WINNEBAGO MOTORHOMES BUILT ON P3 MODEL CHASSIS EQUIPPED WITH 7.4L (LE8) AND H5D/NA5 EMISSIONS
The National Traffic and Motor Vehicle Safety Act, as amended, provides that each vehicle which is subject to a recall campaign of this type must be adequately repaired within a reasonable time after the owner has tendered it for repair. A failure to repair within sixty (60) days after tender of a vehicle is prima facie evidence of failure to repair within a reasonable time.
If the condition is not adequately repaired within a reasonable time, the owner may be entitled to an identical or reasonably equivalent vehicle at no charge or to a refund of the purchase price less a reasonable allowance for depreciation.
To avoid having to provide these burdensome solutions, every effort must be made to promptly schedule an appointment with each owner and to repair their vehicle as soon as possible. As you will see in reading the attached copy of the letter which is being sent to owners, the owners are being instructed to contact the nearest Chevrolet Branch Office if their dealer does not remedy the condition within five (5) days of the mutually agreed upon service date. If the condition is not remedied within a reasonable time, they are instructed on how to contact the National Highway Traffic Safety Administration.
DEFECT INVOLVED
Winnebago Industries has determined that a defect which relates to motor vehicle safety exists in some Winnebago Motorhomes built on 1985-87 P3 Model chassis equipped with GM fuel tank systems and 7.4L (LE8) heavy duty emission gasoline engines (H5D/NA5).
These vehicles could emit gasoline from the fuel filler opening when the fuel fill cap is being removed. Such condition is more likely to occur when the vehicle operates in high temperature conditions, when the main fuel tank is overfilled and/or when fuel is first used from the auxiliary fuel tank after re-fueling both tanks. The condition results when the contents of the main fuel tank expand and the pressure in such tank increases. Should an ignition source be present, the escaping gasoline could ignite and cause a fire. Personal injury and/or vehicle damage may result.
To prevent this condition from occurring it will be necessary to install a new fuel tank vent assembly on vehicles equipped with a GM installed fuel tank.
VEHICLES INVOLVED
Involved are certain Winnebago Motorhomes built on 1985-87 P3 Model chassis within the following VIN breakpoints:
YEAR PLANT FROM THROUGH ---- ------- -------- -------- 1985 Detroit F3330268 F3346854 1986 Detroit G3300135 G3334860 1987 Detroit H3300509 H3332082
OWNER NOTIFICATION
Owners will be notified of this campaign on their vehicles by Winnebago Industries (see copy of Owner Letter included with this bulletin).
DEALER CAMPAIGN RESPONSIBILITY
Dealers are to service all vehicles subject to this campaign at no charge to owners, regardless of mileage, age of vehicle, or ownership, from this time forward.
FUEL TANK INSTALLATIONS
Not all of the involved units are equipped with GM fuel tank installations. It is estimated that approximately 8-1/2% of the vehicles will be equipped with a Winnebago installed fuel tank.
GM installs as standard a 40 gallon fuel tank. An optional 60 gallon capacity fuel tank (RPO NN4) is offered. In certain instances, Winnebago will install a 30 gallon tank in addition to the GM 60 gallon tank.
In the above cases, the campaign modification must be made to vehicles which are equipped with GM fuel tanks. Vehicles equipped solely with Winnebago fuel tank(s) will not require campaign modifications.
Winnebago installs fuel tanks similar to the way GM installs fuel tanks. The difference is in the number of fuel tank straps. Where GM uses two (2) fuel tank straps, Winnebago uses three (3) or more fuel tank straps. In addition, Winnebago does not use the fuel tank strap rubber insulator.
PARTS INFORMATION
Parts required to complete this campaign are to be obtained from General Motors Service Parts Operations (GMSPO). To ensure these parts will be obtained as soon as possible, they should be ordered from GMSPO on a "C.I.O." order with no special instruction code, but on an advise code (2).
PART NUMBER DESCRIPTION QUANTITY/VEHICLE ----------- ------------------ ---------------- 15613507 Fuel Tank Vent Kit 1
Kit consists of:
15613508 - Vent Valve Bracket & Hose Assembly 15613509 - Hose & Tee Assembly 2042292 - Clamp - 8 required 11509126 - Tapping Screw - 8 required 2002878 - Tie Band - 2 required 15613490 - Label - Fuel Cap removal 15613491 - Label - Fuel Overfill 15613510 - Instruction - Fuel Tank Vent 15613492 - Instruction - Fuel Tank Overfill Warning Label
SERVICE PROCEDURE
1. Disconnect negative battery cable.
2. Lift and support vehicle.
Inspection:
1. Inspect fuel tank to determine if it has been installed by General Motors. A production installed tank of 40 or 60 gallon capacity will be attached to the chassis with two (2) straps and insulators. The 40 gallon tank is secured to two (2) rear crossmembers and the 60 gallon tank is secured to the frame rails, Sheet 1. If it is found that the vehicle has either one of the fuel tanks, a valve assembly must be inserted into the fuel vapor hose to exhaust gasoline vapors.
Installation instructions for the valve and its mounting bracket are described below. If the vehicle has a fuel tank which was installed by a bodybuilder, the vehicle does not require modification and the campaign can be completed by proceeding to Step 2 of this section. Otherwise, continue with the Installation and Label Placement Procedures as outlined below.
2. Lower vehicle.
3. Reconnect batteries.
4. Install Campaign Identification Label.
Installation Procedure:
1. Looking up at the underside of the vehicle, locate the fuel filler hose and the fuel vapor hose. These hoses, 1-1/2 in. and 5/8 in. respectively, can be found together near the fuel filler neck.
2. Cut 5/8 in. fuel vapor hose and insert tee and Hose Assembly Sheet 1. The centerline of the tee should be located at the connection between the fuel tank fill pipe and fill hose closest to the fuel tank, Sheet 1, View A. Tighten hose clamps (6) to 0.8-1.2 N.m (7-10 lbs. in.) and secure the tee assembly with tie strap (5) as required to hold it in place, Sheet 1.
3. Every 12 to 15 in. down the bottom of the left hand frame rail drill an 9/32 in. hole, Sheet 1. Care must be used when drilling so that other vehicle components or wiring harnesses are not damaged.
4. Using clamp (4) and screw (2) route 5/8 in. hose along the bottom of the frame rail to the bumper, Sheet 1. The hose must not sag or be restricted in any manner.
NOTE: 26 FOOT MOTORHOME BODIES EQUIPPED WITH A GENERATOR AND TRAILER HITCH.
THE TRAILER HITCH MOUNTING SUPPORT TO THE LEFT HAND FRAME RAIL MUST BE NOTCHED TO ROUTE THE VAPOR HOSE TO THE REAR OF THE VEHICLE.
5. Loosen the two bumper mounting bolts, left hand side of vehicle,at the end of the frame rail, Sheet 2.
6. Slide mounting bracket (5), Sheet 2, under loosened bumper mounting bolts, re-tighten bolts to 68 N.m (50 lbs.ft.).
7. Mount valve and Hose Assembly (1) to mounting bracket (5), Sheet 2. The slotted holes in the valve and hose assembly top cover must be beyond the motorhome body for vehicles equipped with a tube type bumper, and beyond the bumper face for vehicles equipped with a chrome bumper. Tighten bolt (3) to 14 N.m (10 lbs.ft.).
8. Trim 5/8 in. hose, part of tee and hose assembly (2), and connect to the valve and hose assembly (1), Sheet 2. Tighten hose clamp (ref.) Sheet 1 (6) to 0.8-1.2 N.m (7-10 lbs.in.). Hose should not sag or be restricted in any manner.
9. Lower vehicle.
10. Reconnect batteries.
11. Install Campaign Identification Label.
Label Placement Procedure
This Service Kit contains three labels, one large label 200mm X 40mm and two small labels 125mm X 31mm. Affix these labels to the vehicle using the following instructions:
1. All surfaces that the labels will be affixed to must be clean and dry.
2. On all vehicles, affix the large label onto the driver's sunvisor adjacent to the transit caution label so that it is visible by the driver when the sunvisor is in the "down" position.
3. On all vehicles, affix one of the small labels onto the area just below the main tank fuel filler neck so that it is visible when the fuel filler neck door is open.
4. On all vehicles equipped with an auxiliary tank, affix the second small label onto the same area of the filler neck that serves the auxiliary tank.
5. If the vehicle is not equipped with an auxiliary tank, discard the second small label.
CAMPAIGN IDENTIFICATION LABEL
Each vehicle corrected in accordance with the instructions outlined in this Product Campaign Bulletin will require a "Campaign Identification Label." Each label provides a space to include the five (5) digit dealer code of the dealer performing the campaign service. This information may be inserted with a typewriter or ballpoint pen. --------------- | CAMPAIGN | | 67C16 | | COMPLETED | | | |ZN/DEALER CODE| | 99-999 | | | | DO NOT | | REMOVE | --------------- Each "Campaign Identification Label" is to be located on the radiator core support in an area which will be visible when the vehicle is brought in for periodic servicing by the owner.
Supply "Campaign Identification Label" only on a clean dry surface.
CLAIM INFORMATION
Submit a Product Campaign Claim with the information indicated below.
| | FAILED |PART | |LABOR | LAB |*OTH REPAIR PERFORMED |PC| PART # |ALLOW|FC| OP. | HRS | HRS -----------------------------|--|----------|-----|--|------|-----|----- INSPECT VEHICLE-NOT EQUIPPED | | | ** |00| V4400| 0.2 | 0.1 WITH GM INSTALLED FUEL TANK. | | | | | | | NO FURTHER ACTION REQUIRED | | | | | | | -----------------------------|--|----------|-----|--|------|-----|----- INSPECT VEHICLE AND INSTALL |1 | 15613507 | ** |00| V4400| 0.2 | 0.1 FUEL TANK VENT ASSEMBLY KIT | | | | | | | | | | | | | |
*Campaign Administrative Allowance
**The "Parts Allowance" should be the sum total of the current GMSPO Dealer Net price plus 30% of all parts required for the repair.
Dealers will automatically receive the correct labor and material allowance based on the labor operation performed.
Refer to the Chevrolet Claims Processing Manual for details on Product Campaign Claim Submission.
General Motors bulletins are intended for use by professional technicians, not a "do-it-yourselfer". They are written to inform those technicians of conditions that may occur on some vehicles, or to provide information that could assist in the proper service of a vehicle. Properly trained technicians have the equipment, tools, safety instructions and know-how to do a job properly and safely. If a condition is described, do not assume that the bulletin applies to your vehicle, or that your vehicle will have that condition. See a General Motors dealer servicing your brand of General Motors vehicle for information on whether your vehicle may benefit from the information.
