609 Swan Ave
Hohenwald, TN 38462
Service Phone : 1-866-205-2621
September 26, 2018

IMPORTANT TECHNICAL SERVICE BULLETIN - IMMEDIATE ACTION REQUIRED
Dear Oliver Owner,
This Technical Service Bulletin applies to all Oliver Travel Trailers equipped with an optional
inverter manufactured after January 1, 2014. If your trailer does not contain an inverter, this
bulletin does not apply. Trailers manufactured prior to January 1, 2014 contained a different
style inverter to which this bulletin does not apply.

BACKGROUND
Oliver Travel Trailers was recently alerted of a potential shock hazard that could occur due to the
missing or improper installation of the ground wire between the inverter and chassis. This issue has
been identified on more than one travel trailer. To our knowledge as of this writing, no person or
equipment has suffered injury or loss due to this condition.

WHAT IS OLIVER DOING?
All affected owners are being notified via electronic communication and first-class mail that a potential
problem may exist with regard to the lack of ground of the inverter case to the chassis. Oliver is also
alerting the NHTSA of the potential for shock hazard in accordance with CFR Title 49 § 579.5. Oliver has
developed a set of inspection and corrective action instructions that are included in this package. If an
owner is found to have a missing grounding wire covered by this bulletin, Oliver will pay for the
corrective action as well as assisting the owner in finding a qualified service facility.

WHAT SHOULD OWNERS DO?
Owners with inverters should immediately stop using their inverter until they have been inspected
and, if necessary, fixed by a qualified RV technician following the instructions set forth in the attached
document to determine whether the grounding wire from the inverter to the chassis is present and
properly installed.
If the wire IS present and properly installed using the appropriately-sized ring terminal and there is NOT
a flat washer between the ring terminal and inverter casing, please indicate that no corrective action is
necessary by filling out and returning the attached reply card and no further action is required. If the
grounding wire is NOT present, is NOT properly installed using the appropriately-sized ring terminal or
there IS a flat washer installed between the ring terminal and inverter casing, owners should not use
their inverters until an approved corrective action is completed.
Inspection and corrective action should be completed by a qualified RV technician in accordance with
the attached instructions. If the inspection and corrective action is less than $150, no pre-authorization
is required. If the inspection and corrective action exceeds $150, contact Oliver Travel Trailers Service
Department at 1-866-205-2621 or email [email protected]. If the qualified service facility
does not stock the parts needed to complete the corrective action, Oliver will have kits available which
can be obtained by contacting our service department. Owners have the choice of paying the qualified
service facility and submitting the documentation contained in the attachment to Oliver Travel Trailers
for reimbursement or have the qualified service facility submit it for reimbursement. Only corrective
actions completed by a qualified RV technician are eligible for reimbursement and no reimbursement
payments can be made until the corrective action is completed.
We apologize for any inconvenience you may encounter as a result of this bulletin.
Oliver Travel Trailers, Inc.

609 Swan Ave
Hohenwald, TN 38462
Service Phone : 1-866-205-2621

IMPORTANT TECHNICAL SERVICE BULLETIN - IMMEDIATE ACTION REQUIRED
ISSUE

Technical Service Bulletin for trailers equipped with optional inverter potentially improperly
installed chassis ground wire or missing chassis ground wire.

MODELS IMPACTED

Oliver Legacy Elite and Elite II models built on or after January 1. 2014.

INFORMATION

Oliver Travel Trailers was recently alerted that some of it’s trailers may have left the
manufacturing facility with an improperly installed or missing chassis grounding wire
installed between the optional inverter and the chassis. This presents a potential shock
hazard. To our knowledge as of this writing, no person or equipment has suffered injury or
loss due to this condition.

RESOLUTION

Owners with installed optional inverters should stop using their inverter (leave switch in OFF
position) until such time as a proper inspection and, if need be, subsequent corrective action
is performed in accordance with the following procedures.
Inspection and corrective action are only to be performed by qualified RV service
technicians. For assistance in locating a qualified RV service technician or for any
questions regarding this Technical Service Bulletin, contact the Oliver Travel Trailer Service
Department using the information provided. Oliver Travel Trailers will reimburse up to
a total of $150 once a completed inspection and corrective action work order has been
submitted. Work exceeding $150 must be pre-authorized by contacting the Oliver Travel
Trailers Service Department.

INSPECTION PROCESS FOR DETERMINING WHETHER OR NOT THE INVERTER
IS MISSING A CHASSIS GROUND OR WAS IMPROPERLY INSTALLED
1. Go to the main circuit breaker panel located below
the dinette and turn off the main 30-amp circuit
breaker.
2. Unplug all 30-amp power cords from the camper,
including the optional 30-amp convenience
connection if installed.
3. Locate and disconnect the inverter’s 4/0 positive
wire followed by the inverter’s 4/0 negative wire
from the battery bank.
4. Locate the inverter in one of the lower street side
compartments.
5. Check whether there is a ground wire connected
to the chassis ground terminal on the inverter.
(Note: See Step 5 image)

STEP 5

6. If there IS a ground wire connected to the chassis ground terminal on the inverter, check
that the appropriately-sized ring terminal has been installed and that the ring terminal
DOES NOT have a flat washer between it and the chassis of the inverter.
7. If the ground wire IS installed with the appropriately-sized ring terminal and there is NOT
a flat washer installed between the ring terminal and chassis, the issue is not present in
your travel trailer. Please fill out the included inspection reply card and mail to address
below using the postage provided return envelope :
OLIVER TRAVEL TRAILERS
ATTN: MATT DUNCAN
609 SWAN AVE
HOHENWALD, TN 38462
You can also view this notice online and submit the Inspection Card by visiting :

https://olivertraveltrailers.com/topic/inverter-ground/
8. If there is NOT a ground wire connected to the chassis ground terminal on the inverter,
please follow the CORRECTIVE ACTION INSTRUCTIONS FOR INSTALLING A MISSING
INVERTER CHASSIS GROUND WIRE.
9. If the ground wire was installed improperly using an ring terminal that is oversized,
please follow the CORRECTIVE ACTION INSTRUCTIONS FOR IMPROPERLY-SIZED RING
TERMINAL INSTALLED ON CHASSIS GROUND WIRE.
10. If a flat washer was installed between the ring terminal and chassis, please follow the
CORRECTIVE ACTION INSTRUCTIONS FOR FLAT WASHER INSTALLED BETWEEN 1/4”
RING TERMINAL AND INVERTER CHASSIS.

POTENTIAL ITEMS NECESSARY FOR CORRECTIVE ACTION

These items should be commonly available at qualified RV service centers.
If needed, Oliver can provide the kits on request.

1. 8 AWG minimum yellow or green stranded copper wire & split loom
2. (2 qty) ¼” stud copper ring terminal appropriately-sized for grounding wire
3. (1 or 2 qty) ¼” flat washer (stainless recommended)
4. (1 or 2 qty) ¼” lock washer (stainless recommended)
5. (1 or 2 qty) ¼”-20 nut (stainless recommended)
6. (1 qty) vacuum cap

CORRECTIVE ACTION INSTRUCTIONS FOR INSTALLING A MISSING INVERTER
CHASSIS GROUND WIRE
3. Go to the main circuit breaker panel located below the dinette and turn off the main
30-amp circuit breaker.
4. Unplug all 30-amp power cords from the camper, including the optional 30-amp
convenience connection if installed.
5. Locate and disconnect the inverter’s 4/0 positive wire followed by the inverter’s 4/0
negative wire from the battery bank.
6. Locate the inverter in one of the lower street side compartments.
7. Locate the chassis ground terminal on the inverter and remove the nut, lock washer, and
flat washer from the inverter chassis ground terminal.
8. Crimp an appropriately-sized ¼” copper ring terminal to the minimum 8 AWG yellow or
green copper wire and slide the attached ring terminal onto the inverter’s chassis ground
terminal. (Note: Ensure a flat washer is not between the inverter chassis and ring terminal)

SLIDE 1/4” RING TERMINAL WITH
ATTACHED GROUND WIRE ONTO THE
CHASSIS GROUND TERMINAL ON INVERTER
1/4” FLAT WASHER
1/4” LOCK WASHER
1/4” NUT

1. Install the flat washer, followed by the lock
washer and then tighten the nut onto the
terminal. (Note: See illustration above for
proper hardware configuration)
2. Locate the trailer’s main chassis ground
which is a threaded ground stud on the trailer
frame in one of the two street side dinette
compartments. (Note: For assistance in
locating the chassis ground stud, please call
the Oliver Travel Trailer Service Department at
866-205-2621)

INVERTER CHASSIS
GROUND TERMINAL

9. Remove the nut and washer (if exists) from the stud and discard it as a new hardware is
recommended.
10. Run the new ground wire to the chassis ground stud, trim to the adequate length and
crimp an appropriately-sized ¼” copper ring terminal to the ground wire.

VACUUM CAP
1/4” NUT

CHASSIS GROUNDING STUD
HARDWARE CONFIGURATION

1/4” LOCK WASHER
1/4” FLAT WASHER
SLIDE 1/4” TERMINAL WITH
ATTACHED GROUND WIRE
ONTO CHASSIS
GROUND STUD

11. Slide the ring terminal onto the chassis ground stud, install a ¼” flat washer, followed by a
¼” lock washer, then a ¼” nut and finally a vacuum cap. (Note: See illustration above for
proper hardware configuration)
12. Reconnect the inverter’s 4/0 positive wire followed by the inverter’s 4/0 negative wire to
the battery bank.
13. Please fill out the included inspection reply card and mail to address below using the
postage provided return envelope. If the inspection and corrective action has been
preformed by a third-party qualified RV technician, please include a copy of the receipt
for reimbursement.
OLIVER TRAVEL TRAILERS
ATTN: MATT DUNCAN
609 SWAN AVE
HOHENWALD, TN 38462

You can also view this notice online and submit the Inspection Card by visiting :

https://olivertraveltrailers.com/topic/inverter-ground/

CORRECTIVE ACTION INSTRUCTIONS FOR IMPROPERLY-SIZED RING
TERMINAL INSTALLED ON CHASSIS GROUND WIRE
1. Go to the main circuit breaker panel located below the dinette and turn off the main
30-amp circuit breaker.
2. Unplug all 30-amp power cords from the camper, including the optional 30-amp
convenience connection if installed.
3. Locate and disconnect the inverter’s 4/0 positive wire followed by the inverter’s 4/0
negative wire from the battery bank.
4. Locate the inverter in one of the lower street side compartments.
5. Locate the chassis ground terminal on the inverter and remove the nut, lock washer, and
flat washer from the inverter chassis ground terminal.
6. Remove grounding wire (new wire recommended). Once the grounding wire is removed,
ensure there is no additional flat washer remaining on the ground stud.
7. Crimp an appropriately-sized ¼” copper ring terminal to the minimum 8 AWG yellow or
green copper wire and slide the attached ring terminal onto the inverter’s chassis ground
terminal. (Note: Ensure a flat washer is not between the inverter chassis and ring terminal)
SLIDE 1/4” RING TERMINAL WITH
ATTACHED GROUND WIRE ONTO THE
CHASSIS GROUND TERMINAL ON INVERTER
1/4” FLAT WASHER
1/4” LOCK WASHER
1/4” NUT

8. Install the flat washer, followed by the lock
washer and then tighten the nut onto the
terminal. (Note: See illustration above for proper
hardware configuration)
9. Remove original grounding wire from the ground
bar or chassis ground stud.
10. Locate the trailer’s main chassis ground which is
a threaded ground stud on the trailer frame in
one of the two street side dinette compartments.
(Note: For assistance in locating the chassis
ground stud, please call the Oliver Travel Trailer
Service Department at 866-205-2621)

INVERTER CHASSIS
GROUND TERMINAL

14. Run the new ground wire to the chassis ground stud, trim to the adequate length and
crimp an appropriately-sized ¼” copper ring terminal to the ground wire.

VACUUM CAP
1/4” NUT

CHASSIS GROUNDING STUD
HARDWARE CONFIGURATION

1/4” LOCK WASHER
1/4” FLAT WASHER
SLIDE 1/4” TERMINAL WITH
ATTACHED GROUND WIRE
ONTO CHASSIS
GROUND STUD

11. Slide the ring terminal onto the chassis ground stud, install a ¼” flat washer, followed by a
¼” lock washer, then a ¼” nut and finally a vacuum cap. (Note: See illustration above for
proper hardware configuration)
12. Reconnect the inverter’s 4/0 positive wire followed by the inverter’s 4/0 negative wire to
the battery bank.
13. Please fill out the included inspection reply card and mail to address below using the
postage provided return envelope. If the inspection and corrective action has been
preformed by a third-party qualified RV technician, please include a copy of the receipt for
reimbursement.
OLIVER TRAVEL TRAILERS
ATTN: MATT DUNCAN
609 SWAN AVE
HOHENWALD, TN 38462
You can also view this notice online and submit the Inspection Card by visiting :

https://olivertraveltrailers.com/topic/inverter-ground/

CORRECTIVE ACTION INSTRUCTIONS FOR FLAT WASHER INSTALLED
BETWEEN 1/4” RING TERMINAL AND INVERTER CHASSIS
1. Go to the main circuit breaker panel located below the dinette and turn off the main
30-amp circuit breaker.
2. Unplug all 30-amp power cords from the camper, including the optional 30-amp
convenience connection if installed.
3. Locate and disconnect the inverter’s 4/0 positive wire followed by the inverter’s 4/0
negative wire from the battery bank.
4. Locate the inverter in one of the lower street side compartments.
5. Locate the chassis ground terminal on the inverter and remove the nut, lock washer, flat
washer and ground wire from the inverter chassis ground terminal.
6. Remove flat washer that was between the ¼” ring terminal and inverter chassis.

SLIDE 1/4” RING TERMINAL WITH
ATTACHED GROUND WIRE ONTO THE
CHASSIS GROUND TERMINAL ON INVERTER
1/4” FLAT WASHER

INVERTER CHASSIS
GROUND TERMINAL

1/4” LOCK WASHER
1/4” NUT

7. Slide ¼” ring terminal (with attached ground wire) onto the inverter’s chassis ground
terminal. (Note: Ensure a flat washer is not between the inverter chassis and ring terminal)
8. Install the flat washer, followed by the lock washer and then tighten the nut onto the
terminal. (Note: See illustration above for proper hardware configuration)
9. Reconnect the inverter’s 4/0 positive wire followed by the inverter’s 4/0 negative wire to
the battery bank.
10. Please fill out the included inspection reply card and mail to address below using
the postage provided return envelope. If the inspection and corrective action has been
preformed by a third-party qualified RV technician, please include a copy of the receipt
for reimbursement.
OLIVER TRAVEL TRAILERS
ATTN: MATT DUNCAN
609 SWAN AVE
HOHENWALD, TN 38462

You can also view this notice online and submit the
Inspection Card by visiting :
https://olivertraveltrailers.com/topic/inverter-ground/

INVERTER GROUND INSPECTION REPLY CARD
Fill out the other side of this card and mail to
Oliver Travel Trailers using the postage paid envelope
once corrective action has been completed or if not required.
Please include a copy of the receipt from the service facility.
If a Service Kit is needed to complete the corrective action,
please contact our Service Department by calling
1-866-205-2621 or email [email protected].
OLIVER OWNER INFORMATION

SERVICE FACILITY INFORMATION

NAME

BUSINESS NAME

ADDRESS

CONTACT NAME

CITY, STATE, ZIP

ADDRESS

EMAIL ADDRESS

CITY, STATE, ZIP

PHONE

PHONE

HULL OR VIN

DATE

Trailer has been inspected and does not require corrective action
Trailer has been inspected and requires corrective action
Corrective action has been completed. Include a copy of the receipt for reimbursement.