Product Upgrade Bulletin 190312REV
The purpose of this Product Upgrade Bulletin is to inform REV dealers of
the need to inspect and, if necessary, correct the routing of hydraulic hoses
on certain model year 2016-2019 American Coach brand Class A diesel
motorhomes and certain model year 2016, 2018 and 2019 Monaco brand
Class A diesel motorhomes.

PRODUCT
UPGRADE
BULLETIN:
190312REV
YEAR(S)
AFFECTED:
2016-2019

A list of affected vehicle serial numbers appears at the end of this Bulletin.
CONDITION:

PRODUCT(S)
AFFECTED:
American Coach
2016 Allegiance
2016-2019 Dream
2016-2019 Eagle
2016 Heritage
2016 Tradition
Monaco
2016 Dynasty
2018-2019 Marquis
2018-2019
Signature

MODEL(S)
AFFECTED:
All

SUBJECT:
Hydraulic Hose
Routing

KEYWORDS:
Hydraulic,
Hose, Jacks,
Levelers

On motorhomes affected by this Product Upgrade, the hydraulic hoses may
be connected to the manifold/pump in a manner that causes them to be
too tightly coiled, compressed or obstructed, which may cause the hoses to
leak.
INSTRUCTIONS:
Dealers are required to call REV Technical
Support before beginning any work and after
the unit is in their bay. Prior authorization is
required to be submitted. Failure to follow these
instructions could result in a denied claim. Do
not order any parts without discussing this
procedure with REV RV and receiving approval.
American Coach Dealer Technical Support: (800) 417-6413
Monaco Dealer Technical Support: (877) 332-9239
• READ THIS ENTIRE BULLETIN CAREFULLY BEFORE
PROCEEDING AND FOLLOW ALL SAFETY PRECAUTIONS.
• Review the list of affected units at the end of this bulletin
to ensure the motorhome you are inspecting is part of this
campaign.
• Take a copy of this bulletin with you when servicing the unit.

ISSUE DATE:
April 2019

© 2019 REV Recreation Group Inc.

• PHOTOS WILL BE REQUIRED FOR THE FOLLOWING
PROCEDURES. READ PHOTO REQUIREMENTS
CAREFULLY. INSUFFICIENT PHOTO DOCUMENTATION
MAY RESULT IN CLAIM DENIAL.
• If there are any questions after reviewing the entire procedure,
contact REV Dealer Technical Support.

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 190312REV April 2019

page 1 of 22

INSPECTION:
1.

Park the motorhome on dry, level pavement.

2.

Place transmission into NEUTRAL and set the park brake.
!

WARNING

HYDRAULIC HOSES ARE UNDER EXTREME PRESSURE AND CAN
CAUSE INJURY IF HOSES ARE REMOVED INCORRECTLY. JACKS
SHOULD BE PARTIALLY EXTENDED TO REDUCE HOSE PRESSURE
IF IT IS NECESSARY TO LOOSEN A HOSE FITTING DURING THE
FOLLOWING PROCEDURES.
3.

With the engine running, run the auto-level and
auto-retract sequence twice (cycle test). Extend
the hydraulic leveling jacks approximately 4
inches.
Note: Jacks should not be touching the ground.
See Figure 1.

4.

Turn off the ignition and remove the ignition key.
Maintain control of keys until all work has been
completed. Place a sign, DO NOT USE, near the
steering wheel.

5.

Chock the wheels to prevent movement.

6.

Open the engine compartment door at the rear
of the vehicle to locate the hydraulic leveler
manifold/pump.
PHOTO REQUIREMENTS - “BEFORE”
AND “AFTER” PHOTOS REQUIRED
During inspection, take photos of the
routing of each hydraulic hose, near the
manifold/pump. Photos should clearly
identify any hoses that are damaged or that
require correction of the routing.

Figure 1

After repairs are concluded, take photos
of each hose that has been repositioned,
rerouted, or replaced. All photos must be
submitted on the warranty claim.
7.

Carefully examine all the hydraulic hoses in the area of the manifold/pump. Inspect
the hose connections near the crimped fittings for the hose rolling over the crimped
edge. Also inspect hoses for bubbling, blistering or wrinkling near the manifold/pump.
If any hydraulic hose is found to have leaks or damage, contact REV Dealer Technical
Support before proceeding.
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 190312REV April 2019 page 2 of 22

8.

Inspect the routing of each hydraulic hose to identify any that have an overly tight
radius and/or are obstructed by any objects, such as adjacent hoses or fittings,
chassis components, door strut brackets, etc. Any hoses that are obstructed or have
a tight radius may have excess hydraulic fluid pressure. These hoses will need to be
repositioned, either by removing and replacing nylon wire ties, or by “re-clocking” the
fitting to allow proper routing. See Figures 2-3 for examples of hoses that need to have
their routing corrected by repositioning them and/or “re-clocking” their fittings at the
manifold/pump. Figures 4-5 are examples of properly routed hoses at the manifold/
pump. Review the next 2 pages for further routing details critical to the success of this
procedure. See Page 4 for repositioning information and diagrams.

Figure 2 - Incorrect Routing/Clocking

Figure 3 - Incorrect Routing/Clocking

Figure 4 - Correct Routing/Clocking

Figure 5 - Correct Routing/Clocking

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 190312REV April 2019

page 3 of 22

Clock - to be used as reference when
receiving instruction from REV Dealer
Technical Support

See Fitting H Detail

D

E

H

C
F
B

G

A

FITTING H DETAIL
Front of Vehicle

Example A
H
See Fitting H Detail

D

E

C
F
B

G

A

H
Figure 6 - Hose Clocking Reference
Use this page, “Hose Clocking Reference”, and Page 5,
“Hose Routing - Reference Only”, collectively to improve
the hose radius positioning or to determine if any further
action is needed.
The objective is to minimize the sharp bends or radius
of the hoses near the manifold/pump. Depending on
the collection point of the hoses as they route forward
toward the frame rail, the examples are provided to
illustrate the routing possibilities for the motorhome.
(A combination of example A and B may also
be considered.) Once the wire ties are removed a
visual inspection is necessary to determine optimum
positioning. Once you have inspected the motorhome,
use this page to discuss with REV RV Dealer Technical
Support to finalize if repairs are needed.

Example B
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 190312REV April 2019 page 4 of 22

Hose Routing - Reference Only

Figure 7
Bend Radius Too Tight

Figure 8
Bend Radius Correct

Figure 9
Slack Insufficient

Figure 10
Slack Sufficient

Figure 11
Twist Excessive

Figure 12
Twist Acceptable
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 190312REV April 2019

page 5 of 22

9. To adjust or reroute a hydraulic hose:
a) Remove wire ties, if necessary to allow repositioning of the hose(s).
b) Use a 9/16” wrench to loosen the fittings for any hoses that need to be
repositioned. Use a 7/16” backup wrench to keep the fitting from spinning.
c) Adjust the hose’s routing to avoid contact with other components and to correct or
prevent excessive coiling that creates a tight radius, then re-tighten the fitting to
the proper torque specification shown in Figure 13. Do not overtorque the fitting.
Hose Fitting Torque Specifications
Connection
(Hose) JIC -4 (7/16-20)
(Block) SAE (ORB) - (7/16-20)

Specified
Torque (in*lb)
130-150
156-195

Specified
Torque (ft*lb)
11-13
13-16

Figure 13

d) Install new heavy duty black nylon wire ties as necessary to secure the hoses. After
tightening the wire tie, trim off any excess length at its end.
e) Use clean shop cloths to wipe up any hydraulic fluid that escaped during rerouting
of the hoses. Ensure hoses are clean and dry.
f) Start the engine and cycle test the leveling system twice to check for leaks. Be
sure to check the area where the hoses connect to the manifold/pump. If leaks are
found, contact REV Dealer Technical Support before proceeding, and then correct as
necessary. Check and add fluid as needed.
g) Check and add hydraulic fluid as needed.

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 190312REV April 2019 page 6 of 22

PARTS (Purchase Locally):
Black exterior grade nylon wire ties, as required
Dexron III Hydraulic fluid, as required
TOOLS
Wheel chocks
Flashlight
Clean Shop Cloths
Side Cutters

Wrench, 9/16”
Wrench , 7/16” (backup wrench)
Open end torque wrench

WARRANTY LABOR ALLOWANCE:
Product Upgrade 190312REV - Hydraulic Hose Routing
Use Flat Rate Code:
6078-11 Inspected/Not Defective - Includes
cycle test and checking for leaks

Inspection-Only Time
0.3 hour

NOTE: Photos taken during inspection are required.
6078-12 Inspected/Defective/Repaired - see Repair Time
Matrix at right for time allowances (all repair times
include inspection and cycle test).
NOTE: “Before” and “After” photos are required.

Repair Time Matrix
# Hoses Requiring
Adjustment
1-2
3-4
5-6
7-8

Time
(hours)
0.6
0.7
0.8
0.9

If you have any questions regarding this Bulletin, contact:
American Coach Dealer Technical Support: (800) 417-6413
Monaco 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 190312REV April 2019

page 7 of 22

Product Upgrade Bulletin 190312REV - Affected Unit Serial Numbers
2016 American Allegiance
REV Unit
Serial #

Chassis/VIN

REV Unit
Serial #

Chassis/VIN

771GG4419320
771AG4419762
771GG4419907
771GG4420078
771GG4420083
771GG4420157
771AG4420173
771GG4420174
771GG4420329
771GG4420333
771GG4420411
771GG4420420
771TG4420543
771TG4420556
771AG4420657
771TG4420662
771TG4420735
771TG4420744
771TG4420801
771AG4420805
771AG4420883
771TG4420888
771AG4420941

4UZFCGCY1FCGP7799
4UZACGCY4FCGT0020
4UZFCGCY7FCGU7108
4UZFCGCY8FCGY0120
4UZFCGCY7FCGW3812
4UZFCGCY2FCGZ1727
4UZACGCY4FCGW9609
4UZFCGCY5FCGY4626
4UZFCGCY4FCGZ1728
4UZFCGCY6FCGZ1729
4UZFCGCY8FCGZ8598
4UZFCGCYXFCGZ8599
4UZFCGCY3FCHA8496
4UZFCGCY5FCHA8497
4UZACGCY7FCGY0121
4UZFCGCY7FCHA8498
4UZFCGCY9FCHB5128
4UZFCGCY0FCHB5129
4UZFCGCY1GCHE6830
4UZACGCYXFCGY4633
4UZACGCY1FCGY4634
4UZFCGCY3GCHE6831
4UZACGCYXFCGZ1730

771AG4420943
771TG4420945
771AG4421001
771GG4421003
771TG4421005
771GG4421048
771GG4421084
771TG4421090
771TG4421188
771TG4421243
771TG4421274
771AG4421322
771GG4421409
771GG4421443
771GG4421523
771AG4421568
771TG4421631
771TG4421811
771TG4421931
771TG4421936
771AG4421986
771AG4421992
771AG4422143

4UZACGCYXFCGZ8600
4UZFCGCY5GCHE6832
4UZACGCY6GCHH0549
4UZFCGCYXGCHF2996
4UZFCGCY1GCHF2997
4UZFCGCY7GCHE6833
4UZFCGCY5GCHG1511
4UZFCGCY5GCHH0547
4UZFCGCY7GCHH0548
4UZFCGCY7GCHH5717
4UZFCGCY9GCHH5718
4UZACGCY2GCHH0550
4UZFCGCY0GCHH5719
4UZFCGCY3GCHH7626
4UZFCGCY5GCHH7627
4UZACGCY6GCHH5721
4UZFCGCY5GCHL8704
4UZFCGCY7GCHH7628
4UZFCGCY7GCHJ3867
4UZFCGCY9GCHJ3868
4UZACGCY8GCHH5722
4UZACGCYXGCHH5723
4UZACGCY6GCHH7632

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 190312REV April 2019 page 8 of 22

Product Upgrade Bulletin 190312REV - Affected Unit Serial Numbers
2016 American Dream
REV Unit
Serial #

Chassis/VIN

720TG4422088
720MG4422098
720AG4422231
720TG4422406
720AG4422517
720MG4422610
720AG4422661
720TG4422865

4UZFCGBG5GCHN5348
4UZFCGCY0GCHP9984
4UZFCGBG4GCHP4036
4UZFCGBG6GCHP9982
4UZFCGBG2GCHS0962
4UZFCGCY2GCHR4101
4UZFCGBG2GCHU9250
4UZFCGBG6GCHU1314

REV Unit
Serial #

Chassis/VIN

720AG4422937
720MG4422943
720TG4422962
720AG4422970
720TG4423063
720TG4423066
720MG4423123

4UZFCGBG3GCHV4182
4UZFCGCY4GCHR4102
4UZFCGBG5GCHW0405
4UZFCGBG7GCHW0406
4UZFCGBG4GCHW3697
4UZFCGBG1GCHM7148
4UZFCGCY4GCHV8491

2017 American Dream
REV Unit
Serial #

Chassis/VIN

REV Unit
Serial #

Chassis/VIN

720TH4423197
720AH4423238
720TH4423241
720AH4423348
720GH4423399
720AH4423471
720AH4423487
720TH4423490
720AH4423540
720AH4423543
720GH4423552
720GH4423618
720AH4423641
720AH4423732
720MH4423826
720MH4423831
720MH4424063
720TH4424067
720TH4424138
720GH4424149

4UZFCGBG6GCHW3698
4UZFCGBG8GCHW3976
4UZFCGBGXGCHW3977
4UZFCGBG1GCHW3978
4UZFCGCY1GCHW6788
4UZFCGBG6GCHW7539
4UZFCGBG0FCGX5048
4UZFCGBG3FCGY4617
4UZFCGBG5FCGY4618
4UZFCGBG9GCHE0069
4UZFCGCY3GCHY3902
4UZFCGCY5HCHZ5194
4UZFCGBG0GCHY6023
4UZFCGBG2GCHY6024
4UZFCGCY5HCHZ8399
4UZFCGCY7HCHZ5195