NHTSA ID Number: 11029121
Manufacturer Communication Number: TSB 620
TSB/Document Date: 2026-03-02
Summary
There is a possible condition where the exterior entrance door handle mechanism can bypass the inside linkage causing a lock-out situation whereby the door cannot be opened from the exterior.
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TSB/Document ID: TSB 620
Replacement Service Bulletin Number:
MFR Communication Date: 2026-03-02
MFR Internal Campaign ID/Software Version:
Communication Type: Service Bulletin/Repair Instructions
NHTSA Components: UNKNOWN OR OTHER
MFR Component System:
MFR Component Subsystem:
Previous TSB | Next TSB |
Newmar
Corporation
PO Box 30
Nappanee, IN 46550
TSB 620
Aug. 25, 2025
TECHNICAL SERVICE BULLETIN
AFFECTED MODELS
2025 – 2026 :: Northern Star, Ventana, Dutch Star, New Aire, Mountain Aire, London Aire,
Essex, King Aire
DESCRIPTION
There is a possible condition where the exterior entrance door handle mechanism can bypass
the inside linkage causing a lock-out situation whereby the door cannot be opened from the
exterior.
ISSUE
The Trimark door handle should be inspected and the Trimark TSB 102 should be performed
before an unintentional lockout occurs.
UNITS AFFECTED
Please refer to the attached population list for Newmar units and VINs that may be affected.
CORRECTIVE ACTION
Follow the attached Trimark TSB bulletin instructions to inspect and/or retrofit the entrance
door handle. If a kit is required, purchase through Newmar Parts department. If a lockout occurs
before the TSB is performed, contact your Service Account Manager for the Trimark
troubleshooting guide, which should allow the customer/dealer inside the coach without
permanent damage to the Trimark lockset. Submit a picture of the door serial
number with completed claim using the normal Newmar process. Ignore the Dealer
Reimbursement card at the end of t h e bulletin. Do not send directly to Trimark.
PARTS NEEDED
Item Description
Quantity
Newmar Part #
1
039235
Kit Retrofit Rotary Latch
FLAT RATE CODE:
TSB 620
LABOR TIME:
.33hr.
NOTE
Do not keep or redistribute/sell the lockset handle that is being removed and replaced on
this bulletin, as it must be destroyed. As part of filing this claim, you are verifying the part
has been destroyed and scrapped.
IMPORTANT: Please read this bulletin in its entirety prior to beginning any diagnosis or repairs.
NOTICE: Any technical information published in this bulletin is intended for use only by a qualified, Newmar-authorized service technician. Newmar is not responsible for the misuse of this information.
Technical Service Bulletin
TSB102
Purpose: There is a possible condition where the exterior entrance door handle
mechanism can bypass the inside linkage causing a lock-out situation whereby the
door cannot be opened from the exterior handle.
PTL Engineering Inc. Entrance Door Model 3000
TriMark Corporation 030-0900 Motor Home Entrance Door Hardware
OEMs: Newmar, Winnebago, Entegra, Tiffin, Dynamax, Forest River, Foretravel, Thor Motor
Coach, Farber Specialty Vehicles and Wakarusa Coach
Models Affected: This Campaign affects certain 2025 and 2026 model motor homes that were
manufactured after August 14, 2024. See Appendix A for affected 2025 and 2026 Coaches with
PTL door serial #068849 through #072552.
Any questions regarding this Service or TSB instructions, please call TriMark Corporation at
1-641-394-1045.
Kit Includes:
· Technical Service Bulletin
· Reimbursement Card
· L Bracket & 2 Fasteners
· Red Vinyl Cap (provided as spare)
· Inside Handle Assembly
· 3 Torx Head Screws (provided as spare)
· Plastic Cap
TSB Step by Step Guide
Live Installa on Video
Tools Required:
· Phillips 2-Bit Screwdriver
· T-20 torx driver
· Torque wrench/driver
· 5/16” standard socket (bracket)
· 2-1/2 - 3” Extender
· 7/16” deep well socket (acorn nut)
· Flat blade screwdriver or plastic flat tool
PLEASE READ INSTRUCTIONS THOROUGHLY BEFORE STARTING
Note: The information in this bulletin is intended for use only by skilled technicians who have the proper tools, equipment, and
training to correctly and safely maintain the vehicle. These procedures should not be attempted by “do-it-yourselfers”. You should not
assume this bulletin applies to your vehicle or that your vehicle has the condition described, to determine whether this information
applies, contact your authorized dealer, who has the Model, VIN and Customer Information.
Technical Service Bulletin
TSB102
Confirm your door serial number is within
#068849 through #072552
Similar to the sticker shown, if your coach serial number is within the
range mentioned above, please proceed to Step 1. If your coach door
serial number is outside of this range, you can disregard these TSB
instructions.
With the door fully open, you can locate the door serial number label
on the hinge side, behind the screen door.
Step 1: Inspect the Black Plastic Plug on the door
edge to see if there are holes on the top. If there are,
the door hardware has already been upgraded,
please disregard these TSB instructions.
Does the
plug have
Holes or
No Holes?
Step 2: Carefully remove
the Black Plastic Plug with
a flat blade screwdriver or
plastic flat tool.
Be careful not to
scratch the door paint
when removing.
Step 4: Remove the
(3) Torx Head Screws
from the inside plate
assembly and set
aside for reuse later.
If applicable, remove
the vinyl cap from the
inside handle lock
knob and set aside
for reuse later.
Step 5: While carefully supporting the outside
assembly, remove the inside handle assembly from
the door, sliding the connecting rod away from the
door edge. Continue to support the outside handle
through step 11e, noting it may have to shift some in
order to align the two together.
Step 3: Remove the
Acorn Nut from the
Connecting Rod
located in the nut
adjusting hole using a
7/16” deep well socket.
Note: The information in this bulletin is intended for use only by skilled technicians who have the proper tools, equipment, and
training to correctly and safely maintain the vehicle. These procedures should not be attempted by “do-it-yourselfers”. You should not
assume this bulletin applies to your vehicle or that your vehicle has the condition described, to determine whether this information
applies, contact your authorized dealer, who has the Model, VIN and Customer Information.
Technical Service Bulletin
TSB102
Step 6: Verify the part number stamped on the
inside release as 21396 and the date code is
between (32U through 52U) or (01V through 24V).
If it is, continue to Step 7.
If the part number or the
date code is something
other than 21396 and
date code is not in the
range listed above, this
door is not included in
this campaign, follow
Step 10b and
reassemble the
existing door
Part Number and Date Code
hardware.
Inspect the end of the
Connecting Rod. If there is a
“-“ mark on the threaded end,
proceed to Step 7. If there is
a “X” mark or a “-“ AND a “.”
on the threaded end the
hardware has already been
updated, skip to Step 10b
and reassemble the existing
door hardware. No hardware
from the kit will be needed.
Viewing the rod end requires fine attention to detail
Proceed to Step 7
Step 7:
Remove
Bezel from
door and
set aside for
later use.
Skip to Step 10b
Step 8a: While supporting the outside handle, slightly
shift the outside assembly out of the door about 1/2-3/4”
to make room for the removal of the bracket fasteners.
Step 8b: Using a 5/16” socket with
a 2 1/2 - 3” extender, remove the
bracket fasteners and set aside for
later use. (Two extra fasteners are
provided in the event one is lost).
Remove old bracket.
Step 9a: Align the new bracket with
the bracket mounting holes in the door
and the outside assembly mounting
holes, while the outside assembly is
aligned with the paint lines. This is a
critical step.
Step 9b: (Using the old bracket
fasteners, unless lost, use new) Install
the upper fastener first only turning 2-3 rotations. Then
start the lower fastener. Once both are installed a few
rotations, check paint alignment and tighten until snug.
Step 9c: Loosen but DO NOT
REMOVE the (4) Phillip head
screws on the power actuator
plate. Slide power actuator/
plate towards the outside edge
of the door. Tighten down the
(4) screws.
Step 10a: Remove the Acorn Nut
on the new system. Replace the
new inside system, carefully sliding
the Connecting Rod all the way
through the nut adjusting hole.
Step 10b: Reassemble the acorn nut
finger tight to the end of the rod to
ensure the rod doesn’t come loose
through the trip lever, (the adjustment
of the nut will occur at Step 13).
Note: The information in this bulletin is intended for use only by skilled technicians who have the proper tools, equipment, and
training to correctly and safely maintain the vehicle. These procedures should not be attempted by “do-it-yourselfers”. You should not
assume this bulletin applies to your vehicle or that your vehicle has the condition described, to determine whether this information
applies, contact your authorized dealer, who has the Model, VIN and Customer Information.
Technical Service Bulletin
TSB102
Upper
Lock
Knob
Step 11b: Make sure
the Upper Lock Knob
engages with the “D”
shaped shaft on the
exterior handle.
Step 10c: Slide bezel
around inside handle
making sure the
alignment tabs are
towards the top of the
door.
Step 11a: Lift the interior handle to make sure the
system is seated properly, and the outside driving
cam is behind the inside pivot plate, while pressing
the inside and outside together.
Step 11c:
Reinstall the (3)
Torx Head
Screws in the
order listed to
make sure
everything is
aligned correctly.
Only install the
screws 2-3
rotations.
3
2
(3)
1
Support
Outside
Handle
Step 11d: Lift interior handle
to ensure proper engagement.
Incorrect Orientation
Correct Orientation
Step 11e: Once all 3 screws have been installed, then
torque each screw to 13 in-lbs in the same order listed.
If applicable, reinstall the vinyl cap on the inside handle
lock knob.
Step 12a-d: With the door open, manually cycle the hardware from the exterior handle, inside release, and
both lock knobs to ensure they function without binding.
a.
b.
c.
Note: The information in this bulletin is intended for use only by skilled technicians who have the proper tools, equipment, and
d.
training to correctly and safely maintain the vehicle. These procedures should not be attempted by “do-it-yourselfers”. You should not
assume this bulletin applies to your vehicle or that your vehicle has the condition described, to determine whether this information
applies, contact your authorized dealer, who has the Model, VIN and Customer Information.
Technical Service Bulletin
TSB102
Step 13: With the door open, begin Nut
adjustment by pushing the inside Lower Lock
Knob down into the locked position.
Lower Lock Knob
Step 14: Manually close the rotor of the latch while the hardware is still locked from Step 13.
Interior View
While locked, pull up on the inside handle and continue holding the inside handle up. Using a 7/16” deep
well socket, manually (no power), turn the nut clockwise until the latch releases, being sure the nut is
contacting the trip lever, and the nut driver is NOT contacting the trip lever. After the latch releases, let go
of the inside handle and then turn the nut counterclockwise 1-1/4 to 1-1/2 turns.
2
3
1
Trip Lever
Note: The information in this bulletin is intended for use only by skilled technicians who have the proper tools, equipment, and
training to correctly and safely maintain the vehicle. These procedures should not be attempted by “do-it-yourselfers”. You should not
assume this bulletin applies to your vehicle or that your vehicle has the condition described, to determine whether this information
applies, contact your authorized dealer, who has the Model, VIN and Customer Information.
Technical Service Bulletin
TSB102
Step 15a: Unlock the door.
With the door open, manually close the latch and open the latch from the inside handle. The latch should
release before the inside handle reaches maximum travel.
1
2
3
Step 15b: With the door open, repeat this operation sequence for the outside handle. The latch should
release before the outside handle reaches maximum travel.
Note: The information in this bulletin is intended for use only by skilled technicians who have the proper tools, equipment, and
training to correctly and safely maintain the vehicle. These procedures should not be attempted by “do-it-yourselfers”. You should not
assume this bulletin applies to your vehicle or that your vehicle has the condition described, to determine whether this information
applies, contact your authorized dealer, who has the Model, VIN and Customer Information.
Technical Service Bulletin
TSB102
Step 16: Similarly to the sequence in step 15,
with the door open, manually close the latch and
lock the Lower Lock Knob. Function the outside
handle multiple times to make sure the outside
handle does not open the latch. Then function
the inside handle multiple times to make sure the
inside handle does not open the latch.
Step 19: Please dispose/scrap the Inside Handle
Assembly, Bracket and Plastic Cap in
accordance with local and state regulations.
Step 17: Install the new Black Plastic Cap
with holes into the door edge provided in the
kit. If the system didn’t need to be replaced
and you don’t have a new cap, reinstall the
existing cap and mark it with a silver Sharpie.
Note that all fields are required and cards must be
signed.
Please complete the Dealer Reimbursement Card
and return it to TriMark Corporation by 1) Mail or 2)
[email protected]
New Black
Plastic Plug
Step 18: Check the full functionality (opening and closing)
of the entire handle assembly:
Any questions regarding this Service or
TSB instructions, please call TriMark
Corporation at 1-641-394-1045.
· Inside release
· Exterior release
· Inside deadbolt function
with knob
· Interior lock knob
· Exterior lock with key
· Exterior deadbolt
function with key and
power lock with FOB
and/or keypad
500 Bailey Avenue
P.O. Box 350
New Hampton, IA 50659
Tel: ( 641) 394-3188
Fax: (641) 394-2392
www.trimarkcorp.com
TSB102
07/25-1a
Note: The information in this bulletin is intended for use only by skilled technicians who have the proper tools, equipment, and
training to correctly and safely maintain the vehicle. These procedures should not be attempted by “do-it-yourselfers”. You should not
assume this bulletin applies to your vehicle or that your vehicle has the condition described, to determine whether this information
applies, contact your authorized dealer, who has the Model, VIN and Customer Information.
Prod#
400308
400317
400330
400332
400335
400339
400342
400343
400344
400345
400346
400347
400348
400349
400350
400351
400352
400353
400354
400355
400356
400357
400358
400359
400360
400361
400362
400363
400364
400365
400366
400367
400368
400369
400371
400372
400373
400374
416438
416449
416450
416456
416463
416464
416467
416469
416470
416474
416478
416479
VIN Number
Year Br Tp Description
4UZACHFC8SCWC9073 2025 NS DP PTL ENTRY/EXIT DOOR
4UZACHFC5SCWC9872 2025 NS DP PTL ENTRY/EXIT DOOR
4UZACHFC0SCWC6376 2025 NS DP PTL ENTRY/EXIT DOOR
4UZACHFC1SCWC9870 2025 NS DP PTL ENTRY/EXIT DOOR
4UZACHFC3SCWB9518 2025 NS DP PTL ENTRY/EXIT DOOR
4UZACHFC7SCVW7184 2025 NS DP PTL ENTRY/EXIT DOOR
4UZACHFC1SCWE9293 2025 NS DP PTL ENTRY/EXIT DOOR
4UZACHFC2SCWD2745 2025 NS DP PTL ENTRY/EXIT DOOR
4UZACHFC0TCWD4432 2026 NS DP PTL ENTRY/EXIT DOOR
4UZACHFC9SCWH1638 2025 NS DP PTL ENTRY/EXIT DOOR
4UZACHFC9SCWD4427 2025 NS DP PTL ENTRY/EXIT DOOR
4UZACHFC0SCWH1639 2025 NS DP PTL ENTRY/EXIT DOOR
4UZACHFC4SCWD2746 2025 NS DP PTL ENTRY/EXIT DOOR
4UZACHFC3SCWC9871 2025 NS DP PTL ENTRY/EXIT DOOR
4UZACHFC5SCWJ0436 2025 NS DP PTL ENTRY/EXIT DOOR
4UZACHFC8SCWD2748 2025 NS DP PTL ENTRY/EXIT DOOR
4UZACHFC3SCWJ0435 2025 NS DP PTL ENTRY/EXIT DOOR
4UZACHFC5TCWK1292 2025 NS DP PTL ENTRY/EXIT DOOR
4UZACHFC3TCWK1291 2025 NS DP PTL ENTRY/EXIT DOOR
4UZACHFC5TCWK1289 2025 NS DP PTL ENTRY/EXIT DOOR
4UZACHFC4SCWD6540 2025 NS DP PTL ENTRY/EXIT DOOR
4UZACHFC3TCWK3218 2025 NS DP PTL ENTRY/EXIT DOOR
4UZACHFC6SCWE1965 2025 NS DP PTL ENTRY/EXIT DOOR
4UZACHFC6SCWD2747 2025 NS DP PTL ENTRY/EXIT DOOR
4UZACHFC5TCWK3219 2025 NS DP PTL ENTRY/EXIT DOOR
4UZACHFC1TCWK1290 2025 NS DP PTL ENTRY/EXIT DOOR
4UZACHFC8TCWM1195 2025 NS DP PTL ENTRY/EXIT DOOR
4UZACHFC8SCWD6539 2025 NS DP PTL ENTRY/EXIT DOOR
4UZACHFC1SCWE4269 2025 NS DP PTL ENTRY/EXIT DOOR
4UZACHFCXTCWM3708 2026 NS DP PTL ENTRY/EXIT DOOR
4UZACHFC1TCWM1197 2025 NS DP PTL ENTRY/EXIT DOOR
4UZACHFCXTCWM1196 2026 NS DP PTL ENTRY/EXIT DOOR
4UZACHFCXSCWE9292 2025 NS DP PTL ENTRY/EXIT DOOR
4UZACHFCXTCWM6379 2026 NS DP PTL ENTRY/EXIT DOOR
4UZACHFC7TCWP0249 2026 NS DP PTL ENTRY/EXIT DOOR
4UZACHFC3TCWM6076 2026 NS DP PTL ENTRY/EXIT DOOR
4UZACHFC5TCWP0251 2026 NS DP PTL ENTRY/EXIT DOOR
4UZACHFC0TCWP2537 2026 NS DP PTL ENTRY/EXIT DOOR
4UZFCHFE5SCWC9068 2025 VT DP PTL ENTRY/EXIT DOOR
4UZFCHFE2SCWC6371 2025 VT DP PTL ENTRY/EXIT DOOR
4UZFCHFE1SCWC9066 2025 VT DP PTL ENTRY/EXIT DOOR
4UZFCHFE8SCWC7377 2025 VT DP PTL ENTRY/EXIT DOOR
4UZFCHFE3SCWC9067 2025 VT DP PTL ENTRY/EXIT DOOR
4UZFCHFE4SCWC6372 2025 VT DP PTL ENTRY/EXIT DOOR
4UZACHFE4SCWC9072 2025 VT DP PTL ENTRY/EXIT DOOR
4UZACHFE7SCWC6375 2025 VT DP PTL ENTRY/EXIT DOOR
4UZACHFE3SCWC6373 2025 VT DP PTL ENTRY/EXIT DOOR
4UZFCHFE0SCWC6370 2025 VT DP PTL ENTRY/EXIT DOOR
4UZFCHFE6SCWC7376 2025 VT DP PTL ENTRY/EXIT DOOR
4UZFCHFE7SCWC9069 2025 VT DP PTL ENTRY/EXIT DOOR
Serial Date In Production
Date Off Production
69059
9/23/2024
10/3/2024
69131
10/3/2024
10/23/2024
69062
9/17/2024
10/2/2024
68925
9/24/2024
10/14/2024
69051
10/24/2024
11/6/2024
69356
10/23/2024
11/6/2024
70166
12/10/2024
12/19/2024
69343
10/22/2024
11/4/2024
69783
11/11/2024
11/21/2024
70161
12/11/2024
1/8/2025
69785
11/12/2024
11/21/2024
70219
1/7/2025
1/16/2025
69915
11/19/2024
12/5/2024
70164
12/11/2024
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