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NHTSA ID Number: 10244225

Manufacturer Communication Number: TSB 23E-050

TSB/Document Date: 2023-10-18


Summary

Provides instruction to address specific 7000lb and 8000lb Curt axles installed on Grand Design RVs with under torqued U-Bolts.


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TSB/Document ID: TSB 23E-050

Replacement Service Bulletin Number:

MFR Communication Date: 2023-09-29

MFR Internal Campaign ID/Software Version:

Communication Type: Service Bulletin/Repair Instructions

NHTSA Components: EQUIPMENT

MFR Component System:

MFR Component Subsystem:


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NLiPPERT SPRING SLIPS/ U-BOLT TORQUE
[GEETIETE] 23¢-050
| ETE Spring axles
[ESET uty 11, 2028 FESSEEYo2Hous
Purpose
This document will provide instruction to address specific 7000-Ib and 8000-Ib CURT axles installed on
Grand Design Recreational Vehicles with under-torqued U-Bolts. These instructions show the location of the
U-Bolts and how to increase the torque value of the nuts. The LipperteBay logo production dates are from September
15, 2021 to May 19, 2023.
Component Name: 7000 and 8000 pound CURT axle
+ 2021127067 + V000656544
+ 2022109939 + V000674040
+ 2022451318 + V000678286
Affected CURT Axle Part Numbers
Due to the specific configuration of some RVs, it was determined the U-Bolt torque should be increased
to 90 ft-lbs.
OEM Instructions
The involved products must be verified before applying torque instructions.
A clear photo of the axle tag, including the axle serial number, must be submitted once inspection or repair
is completed.
LipperteBay logo does not require advance contact or that preauthorization is obtained.
Labor allowance for this inspection is 0.2 hours per axle.
1 8 Curr
| Gurr 886-524-7821 www.curtmgficom Saas
! Teast Cunt Part Cut POF
ad - — _ Axle Tag Sample
S> CUTS = == .
ml . mp seccesl (Not an exact replica)
5 Qi Serial # SXXXXXXXXX Rata
Piet Tocco eer
oI BAR CODE es
! Copociy, Ibs Mig. Dale: Sac)
| zhsmiemnemnmemenee HOSES
See et crernenemnour
Rev: 07.11.2023 Page 1 CCD-0007996

NiiPPERT SPRING SLIPS/ U-BOLT TORQUE
[GEETIETE] 23¢-050
| ETE Spring axles
[ESET uty 11, 2028 FESSEEYo2Hous
Safety
This document provides general instructions. Many variables can change the circumstances of any
procedure, i.e. the degree of difficulty involved in the service operation and the ability level of the individual
performing the operation. This document cannot begin to plot out procedures for every possibility, but will
provide the general instructions for effectively installing, removing or servicing the system. In the event the
skill level required is too advanced or the procedure too difficult, a certified technician should be consulted
before performing the necessary operation. Failure to correctly install, remove or service the system may
result in voiding the warranty, inflicting injury or even death.
Wear appropriate personal protective equipment (PPE) when performing service or maintenance
operations. Always wear eye protection when servicing trailer axles, brakes, hubs, springs and
wheels. Not using PPE may result in personal injury.
Moving parts can pinch, crush or cut. Keep clear and use caution.
Resources Required
+ Torque wrench (adjustable to 150 ft-lbs)
+ 7" socket
Rev: 07.11.2023 Page 2 CCD-0007996

(J LiPPERTeBay logo SPRING SLIPS/ U-BOLT TORQUE

[GEETIETE] 23¢-050

| ETE Spring axles

[ESET uty 11, 2028 FESSEEYo2Hous
Instructions

1. Use a torque wrench adjustable up to 150 ft-lbs. Set torque wrench to a 90 ft-lbs setting and use a 7/8”
socket to progressively tighten tie (spring) plate nuts (Fig. 1A) in a criss-cross pattern in the order given
in figure 1 until the final torque of 90 ft-lbs is obtained.
2. Verify all nuts are torqued.
Fig.1
Y
ff (2)
a hs
Tie plate
«) ¥:
©) > aaa
| U-Bolt | :
ES
As a supplier of a broad array of highly-engineered components in the recreation and transportation product markets, safety, education and customer satisfaction are
our primary concerns. Should you have any questions, please do not hesitate to contact us at 432-LIPPERTeBay logo (432-547-7378) or by email at [email protected].
Self-help tips, technical documents, product videos and a training class schedule are available at lippert.com or by downloading the LippertNOW app.

VLiPPERT GLISSEMENTS DE RESSORT/COUPLE DE
SERRAGE DES BOULONS EN U
LOSSY
PT ssesraseson
Pe EES.
Objectif
Le présent document fournit des instructions sur les essieux CURT de 7 000 Ib et de 8 000 lb installés sur les véhicules
récréatifs de Grand Design avec des boulons en U sous serrage. Ces instructions indiquent l’emplacement des
boulons en U et la fagon d’augmenter le couple de serrage des écrous.Les dates de production de LipperteBay logo sont du
15 septembre 2021 au 19 mai 2023.
Nom du composant: Essieu CURT de 7 000 et 8 000 livres
» 2021127067 + VO00656544
+ 2022109939 + 000674040
+ 2022451318 + V000678286
Numéros De Piéces D’Essieu CURT Concernés
En raison de la configuration particuliére de certains VR, il a été déterminé que le couple de serrage du boulon en U
devrait étre augmenté a 90 pieds-livres.
Instructions du fabricant d’origine
Les produits concernés doivent étre vérifiés avant d’appliquer les instructions de serrage.
Une photo claire de I’étiquette d’essieu, y compris le numéro de série de l’essieu, doit étre soumise une fois l’inspection
ou la réparation terminée.
LipperteBay logo n’exige pas de contact préalable ou l’obtention d’une préautorisation.
Lindemnité de main-d’ceuvre pour cette inspection est de 0,2 heure par essieu.
| @& &
| & Seger
Curr 886-524-7621 wow.curtmgticom «Ss
1 ext Cus Part Cut POF
g Ld CURTSE=S= amr —E a Exemple d’étiquette d’essieu
wl - ee (Pas une réplique exacte)
5 Qi Serial # SXXXXXXXXX ae age
Freee Serreapaee
ol BAR CODE See
! Copociy, Ibs Mig. Dale: Sac)
| zhsmiemnemnmemenee HOSES
SS ee
Rév: 07.11.2023 Page 1 CCD-0007996

VLiPPERT GLISSEMENTS DE RESSORT/COUPLE DE
SERRAGE DES BOULONS EN U
LOSSY
PT ssesraseson
Pe EES.
Sécurité
Ce document fournit des instructions générales. De nombreuses variables peuvent modifier les circonstances de
n’importe quelle procédure, c'est-a-dire le degré de difficulté associé a l’opération de service et le niveau de capacité
de la personne qui effectue l’opération. Ce document ne peut pas commencer a tracer les procédures pour chaque
possibilité, mais fournit les instructions générales pour l’installation, le retrait ou la maintenance efficace du systéme.
Sile niveau de compétence requis est trop avancé ou si la procédure est trop difficile, il faut consulter un technicien
certifié avant d’effectuer l’opération nécessaire. Si le systeme n’est pas correctement installé, retiré ou entretenu, la
garantie peut étre annulée, entrainant des blessures, voire la mort.
Porter un équipement de protection individuelle (EPI) approprié lors des de l’entretien ou les opérations
d’entretien. Toujours porter une protection oculaire lors de l’entretien des essieux, des freins, des moyeux,
des ressorts et des roues de la remorque. Le fait de ne pas utiliser l’EPI peut entrainer des blessures.
Les piéces mobiles peuvent pincer, écraser ou couper.
Rester a l’écart et faire preuve de prudence.
Ressources requises
+ Clé dynamomeétrique (réglable a 150 pieds-livres)
+ Douille de 7% po
Rév : 07.11.2023 Page 2 CCD-0007996

(JuPPeRT GLISSEMENTS DE RESSORT/COUPLE DE
LOSSY
PT ssesraseson
Pe EES.

Instructions

1. Utiliser une clé dynamométrique réglable jusqu’a 150 pieds-livres. Régler la clé dynamométrique sur un couple
de 90 pieds-livres et utiliser une douille de 7/8 po pour serrer progressivement les écrous de la plaque de
fixation (a ressort) (illustration 1A) dans lordre indiqué a la figure 1 jusqu’a ce que le couple final de 90 pieds-
livres soit obtenu.
2. — Vérifier que tous les écrous sont serrés.
at: ea
N
ff (2)
£ hs
LF amt J
Attache plate
«) ¥
\) ie |
Boulon en U .

ES
En tant que fournisseur dune vaste gamme de composants hautement perfectionnés sur les marchés des produits de loisits et de transport, la sécurité, l'éducation et la satisfaction de la clientéle sont nos principales
préoccupations. Si vous avez des questions, nfhésitez pas & communiquer avec nous au 432-LIPPERTeBay logo (432-547-7378) ou par courriel & [email protected]
Des conseils d’auto-assistance, des documents techniques, des vidéos sur les produits et un programme de cours de formation sont disponibles & l'adresse lippert.com ou en téléchargeant I'application LippertNOW.
Rév : 07.11.2023 Page 3 CCD-0007996

1


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