NHTSA ID Number: 10129762
Manufacturer Communication Number: PUB-170906REV-Ja
TSB/Document Date: 2018-03-05
Summary
The purpose of this Product Upgrade service bulletin is to provide REV dealers the instructions to inspect, and if necessary, replace the mounting hardware for the Power Gear leveling jacks on certain model year 2016-2018 American Coach brand American Dream, American Eagle and American Revolution, model year 2016-2018 Monaco brand Diplomat, and model year 2016-2017 Holiday Rambler
brand Scepter, manufactured between February 2, 2016 and April 28, 2017. On motorhomes affected by this Bulletin, SAE Grade 5 or 8 bolts should have been used to attach the leveling jacks to the jack brackets. If SAE Grade 5 or Grade 8 bolts were not used to install the leveling jacks, the mounting bolts will need to be replaced.
Product Upgrade Bulletin 170906REV
UPGRADE
BULLETIN:
170906REV
YEAR(S)
AFFECTED:
2016-2018
PRODUCT(S)
AFFECTED:
American Coach:
Model Year 2016-2018
American Dream
American Eagle
American Revolution
Monaco:
Model Year 2016-2018
Diplomat
Holiday Rambler:
Model Year 2016-2017
Scepter
MODEL(S)
AFFECTED:
All with
manufacturing
dates between
February 2, 2016
and April 28, 2017
SUBJECT:
Inspection/
Correction
of Mounting
Hardware on
Power Gear
Leveling Jacks
KEYWORDS:
Bolt, Bolts, Jacks,
Levelers
ISSUE DATE:
December 2017
The purpose of this Product Upgrade service bulletin is to provide REV
dealers the instructions to inspect, and if necessary, replace the mounting
hardware for the Power Gear leveling jacks. A list of affected model
year model year 2016-2018 American Coach (Dream, Eagle, and
Revolution), model year 2016-2018 Monaco Diplomat, and model
year 2016-2017 Holiday Rambler Scepter, Class A motorhome serial
numbers appears at the end of this Bulletin.
CONDITION:
On certain motorhomes affected by this Bulletin, SAE Grade 5 or 8 bolts
should have been used to attach the leveling jacks to the jack brackets. If
SAE Grade 5 or Grade 8 bolts were not used to install the leveling jacks,
the mounting bolts will need to be replaced.
Follow the steps below to inspect, and if necessary, replace the leveling
jack attachment bolts with Grade 8 bolts.
Read this entire bulletin before beginning any work. Follow all
instructions carefully and heed all warnings and precautions. Contact
REV Dealer Technical Support with any questions before beginning any
work.
American Coach Dealer Technical Support:
(800) 417-6413
Monaco/Holiday Rambler Dealer Technical Support:
(877) 332-9239
!
WARNING
•
DO NOT WORK UNDER A MOTOR HOME WITH AN INFLATED
AIR SUSPENSION SYSTEM. BODILY INJURY OR DEATH
COULD RESULT FROM A SUDDEN DROP IN THE MOTOR
HOME AIR SUSPENSION SYSTEM.
•
KEEP CLEAR OF ALL PINCH POINTS WHEN WORKING UNDER
A MOTOR HOME.
•
THE LEVELING JACKS SHOULD NOT SUPPORT ANY WEIGHT OF
THE MOTORHOME WHILE WORK IS PERFORMED. FAILURE TO
FOLLOW THIS WARNING MAY RESULT IN PERSONAL INJURY.
•
DO NOT WORK UNDER THE MOTORHOME UNLESS IT IS
SUPPORTED WITH JACK STANDS CAPABLE OF SUPPORTING
ITS WEIGHT.
INSPECTION:
1. Park the motorhome on dry, level pavement. Place the transmission
in Neutral and set the parking brake. Chock the wheels to prevent
movement.
© 2017 REV Recreation Group Inc.
This bulletin is supplied for technical information only and is not an authorization for repairs.
“It is impossible to know, evaluate and advise the service trade of all conceivable ways in which service might be done or of the possible hazardous consequences of each way. Accordingly, anyone
who uses a service procedure or tool must first assure that neither personal safety nor vehicle safety will be jeopardized by the selected service methods.”
Product Upgrade Bulletin 170906REV December 2017
page 1 of 13
2.
3.
4.
5.
Ensure the air in the suspension is dumped.
Note: For units equipped with a VALID Air + Hydraulic
leveling system, the air in the suspension must be
dumped manually before proceeding. To manually dump
the air, extend the jacks, and then retract them.
Turn off the ignition and remove the ignition key. Maintain
control of keys until all work is performed.
Use a heavy-duty floor jack to elevate the unit to access
the repair area. Support the chassis with heavy duty jack
stands while all work is performed.
Locate the bolts attaching the leveling jack to the jack
bracket. Referring to Figures 1-3, inspect the head of the
bolt to determine which bolt grade is installed.
a) If the six bolts used to mount the jack are either SAE
Grade 5 or Grade 8, they do not require replacement.
Grade 2
Low or medium
carbon steel
No markings
Grade 5
3 Radial Lines
Medium Carbon
Steel, Quenched
and Tempered
Grade 8
6 Radial Lines
Medium Carbon
Alloy Steel,
Quenched and
Tempered
Figure 1
Photo Requirement:
For each jack that was mounted using
Grade 8 or Grade 5 bolts, take photos
that clearly show all of the bolt heads and
submit a claim for Inspected/Not Defective
(Flat Rate Code 6066-11).
b) If Grade 5 or Grade 8 bolts were not used to
mount the jacks, continue to “CORRECTION - Bolt
Replacement/Installation Sequence” on the next
page, to replace the leveling jack mounting bolts and
nuts.
Figure 2
Grade 8 bolt shown - does not need
replaced
IMPORTANT NOTE:
Prior Authorization (PAR) is required for jack
mounting hardware replacement. Contact
Dealer Technical Support:
American Coach Dealer Technical Support:
(800) 417-6413
Monaco/Holiday Rambler Dealer Technical Support:
(877) 332-9239
Figure 3
The bolts used to mount the jack must
be either Grade 5 or Grade 8
This bulletin is supplied for technical information only and is not an authorization for repairs.
“It is impossible to know, evaluate and advise the service trade of all conceivable ways in which service might be done or of the possible hazardous consequences of each way. Accordingly, anyone
who uses a service procedure or tool must first assure that neither personal safety nor vehicle safety will be jeopardized by the selected service methods.”
Product Upgrade Bulletin 170906REV December 2017 page 2 of 13
CORRECTION - BOLT REPLACEMENT INSTALLATION SEQUENCE
(These instructions must be followed carefully)
DO NOT REMOVE THE JACK DURING THE PROCEDURE. WORK ON ONE SIDE OF THE
JACK BRACKET AT A TIME. FOLLOW THE BOLT REMOVAL SEQUENCE CLOSELY.
!
WARNING
Hydraulic hoses may be under pressure and can cause severe injury if suddenly
removed. If it is necessary to temporarily loosen or remove a hydraulic hose, contact
REV Dealer Technical support before proceeding.
Heavy duty gloves and a face shield or safety glasses with side shields should
always be worn when working with hydraulic lines. Cover all exposed skin.
TOP
TOP
CENTER
CENTER
BOTTOM
BOTTOM
Figure 4
Viewed facing the top of the
leveling jack
Figure 5
Figure 6
6. If the inspection determines the need for replacement of the jack fastening hardware, follow
the steps as outlined below. Refer to Figures 4 and 5. Jacks are not to be removed.
a. Remove the bottom mounting bolt from one of the jacks.
b Working upward on the same side, remove the center bolt.
c. Remove the top bolt last.
Reverse the order when installing the new bolts and nuts. See Figures 4 & 5.
d. Install the top bolt first.
e. Install the center bolt next.
f. Install the bottom bolt last.
g. Torque bolts to 108-120 ft-lbs.
Notes:
• It may be necessary to reposition any hydraulic hose fitting connections that obstruct jack bolts
that need to be replaced. DO NOT loosen or remove any hydraulic fittings without contacting
REV Dealer Technical Support first. See WARNING notes above. Refer to Figure 6.
• Per Lippert Corporation Inc. instructions:
To adjust a retract hydraulic hose fitting: go into manual mode on the leveling touch pad
and extend the jacks down a few inches. Press extend for several seconds, as this equalizes
the pressure in the jacks.
To adjust an extend hydraulic hose fitting: go into manual mode on the touch pad and fully
retract the jack, holding for several seconds after complete. The pressure should be relieved
on the extend fitting.
(Continued on next page)
This bulletin is supplied for technical information only and is not an authorization for repairs.
“It is impossible to know, evaluate and advise the service trade of all conceivable ways in which service might be done or of the possible hazardous consequences of each way. Accordingly, anyone
who uses a service procedure or tool must first assure that neither personal safety nor vehicle safety will be jeopardized by the selected service methods.”
Product Upgrade Bulletin 170906REV December 2017
page 3 of 13
Notes:
• It may be necessary to fabricate a “backer” on the end of the wrench to hold the nut in
place until the bolt is started.
• On some products, the nuts are welded to the backside of the bracket. If that is the case,
replace the flange bolts only, if required per the inspection.
7. Reposition any hydraulic hose fitting connections that were moved during the repair
procedure. Tighten fittings finger-tight, then a quarter turn on the fitting. Do not
overtighten. Fittings have an O-ring that may become damaged and cause leakage if
overtightened.
8. Repeat Steps 6-7 as required per the inspection until all 4 jacks have Grade 8 or Grade
5 fasteners installed.
9. Operate and test the leveling system for function and leaks. Correct as necessary.
This bulletin is supplied for technical information only and is not an authorization for repairs.
“It is impossible to know, evaluate and advise the service trade of all conceivable ways in which service might be done or of the possible hazardous consequences of each way. Accordingly, anyone
who uses a service procedure or tool must first assure that neither personal safety nor vehicle safety will be jeopardized by the selected service methods.”
Product Upgrade Bulletin 170906REV December 2017 page 4 of 13
TOOLS
3/4 and 7/8 Open/Boxed End Wrenches, 12” – 14”
Clean Shop Cloth
Heavy Duty Floor Jack
Heavy Duty Jack Stands
Socket
Torque wrench, 0-150 ft-lbs.
Wheel chocks
PARTS
Part Number Description
10493818
Upgrade 170906REV Kit, Leveler Mounting Hardware
Quantity
As required per the
inspection procedure
Kit contains replacement fastening hardware for ONE JACK:
BOLT - 1/2 - 13 X 1 3/4 HFLH GR8 ZFLK FTHD ST
NUT-FLANGE LOCK 1/2X13 GRADE 8 (G), ZINC FINISH
(6 ea.)
(6 ea.)
WARRANTY LABOR ALLOWANCE:
Product Upgrade 170906REV Power Gear leveler hardware
Use Flat Rate Code:
Time
6066-11 Product Upgrade 170906REV Power Gear leveler hardware
Inspected/Not Defective (photo required)
0.3 hour
6066-12 Product Upgrade 170906REV Power Gear leveler hardware
1.0 hour per jack
Inspected/Defective/Repaired
Prior Authorization (PAR) is required for jack mounting hardware replacement
If you have any questions regarding this Bulletin, contact
REV Recreation Group Dealer Technical Support:
American Coach Dealer Technical Support: (800) 417-6413
Monaco/Holiday Rambler Dealer Technical Support: (877) 332-9239
Service literature can be accessed online at: http://revrvdealers.com
This bulletin is supplied for technical information only and is not an authorization for repairs.
“It is impossible to know, evaluate and advise the service trade of all conceivable ways in which service might be done or of the possible hazardous consequences of each way. Accordingly, anyone
who uses a service procedure or tool must first assure that neither personal safety nor vehicle safety will be jeopardized by the selected service methods.”
Product Upgrade Bulletin 170906REV December 2017
page 5 of 13
Product Upgrade 170906REV Affected Unit Serial Numbers
Model Year 2016 American Coach / American Dream
REV Unit
Identification #
Chassis VIN #
REV Unit
Identification #
Chassis VIN #
720MG4422943
4UZFCGCY4GCHR4102
720TG4422865
4UZFCGBG6GCHU1314
720MG4423123
4UZFCGCY4GCHV8491
720TG4422962
4UZFCGBG5GCHW0405
720AG4422661
4UZFCGBG2GCHU9250
720TG4423063
4UZFCGBG4GCHW3697
720AG4422937
4UZFCGBG3GCHV4182
720TG4423066
4UZFCGBG1GCHM7148
720AG4422970
4UZFCGBG7GCHW0406
Model Year 2017 American Coach / American Dream
REV Unit
Identification #
Chassis VIN #
REV Unit
Identification #
Chassis VIN #
720GH4423399
4UZFCGCY1GCHW6788
720AH4424319
4UZFCGBG1HCJB8807
720GH4423552
4UZFCGCY3GCHY3902
720AH4424577
4UZFCGBG4HCJC5864
720GH4423618
4UZFCGCY5HCHZ5194
720AH4424592
4UZFCGBG7HCJC7642
720GH4424149
4UZFCGCYXHCHZ8401
720AH4424715
4UZFCGBG6HCJC5865
720GH4425323
4UZFCGCYXHCJD1109
720AH4424938
4UZFCGBG6HCJD2895
720GH4425811
4UZFCGCY9HCJF7295
720AH4425057
4UZFCGBG6HCJD5215
720MH4423826
4UZFCGCY5HCHZ8399
720AH4425127
4UZFCGBG9HCJD6147
720MH4423831
4UZFCGCY7HCHZ5195
720AH4425183
4UZFCGBG2HCJD6149
720MH4424063
4UZFCGCY8HCHZ8400
720AH4425187
4UZFCGBG5HCJE1734
720MH4424396
4UZFCGCY0HCJB8806
720AH4425321
4UZFCGBG7HCJE1735
720MH4424664
4UZFCGCY6HCJC7641
720AH4425395
4UZFCGBGXHCJE2930
720MH4426567
4UZFCGCY2HCJF8675
720AH4425951
4UZFCGBG5HCJD1110
720AH4423238
4UZFCGBG8GCHW3976
720AH4425955
4UZFCGBG3HCJE2932
720AH4423348
4UZFCGBG1GCHW3978
720AH4426024
4UZFCGBG7HCJE4408
720AH4423471
4UZFCGBG6GCHW7539
720AH4426092
4UZFCGBG9HCJE4409
720AH4423487
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TSB/Document ID: PUB-170906REV-Ja
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MFR Communication Date: 2017-12-07
MFR Internal Campaign ID/Software Version:
Communication Type: Service Bulletin/Repair Instructions
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