NHTSA ID Number: 10144770
Manufacturer Communication Number: LI4407E
TSB/Document Date: 2018-09-17
Summary
A new option is available to ease the removal of the Thermo King
AC unit evaporator on CNG vehicles.
SAV.1E.2012MA
LI4407E
INFORMATION LETTER
REFERENCE:
Nova Bus Manuals
SECTION:
14: HVAC
RS NO:
MQR 7621-1427
EFFECTIVE IN PROD.:
LA86 (2018NO)
SUBJECT:
To faciltate the replacement of the A/C unit evaporator on CNG vehicle
JUSTIFICATION:
A new option is available to ease the removal of the Thermo King AC unit evaporator on
CNG vehicles.
APPLICATION DEADLINE:N/A
DIRECT CHARGES
LEVEL
DESCRIPTION
1
Modify the vehicle structure and install new access panel N93775, to
ease access to the evaporator anchor nut.
2
–
TIME
LABOUR
MATERIAL
Client
Client
4h
–
–
–
MATERIAL
QTY
PART NO
REV.
DESCRIPTION
REPLACES PART N°
LEVEL 1
1
N93775
–
Angled access panel
–
1
N66254-75
–
Rectangular insulation
–
8
N39340
–
–
–
White Sikaflex 252 (cartridge)
–
–
–
–
305 ml N24232-01
LEVEL 2
–
–
To order, please contact Prevost Parts by phone at 1‑800‑771‑6682, by fax at 1‑888‑668‑2555 or by email at
prevostparts.commandes@volvo.com. Specify document number, quantity of parts required and shipping address.
DISPOSAL OF PARTS
REMOVED PARTS ARE:
DISCARDED
RETAINED
–
–
REVISION HISTORY
REV.
DATE
NR
2018AU30
APPROVED BY: Daniel Theriault
CHANGE DESCRIPTION
Initial release
WRITTEN BY
Luc Carignan
Digitally signed by Daniel Theriault
DN: cn=Daniel Theriault, o=Nova Bus, ou, email=daniel.theriault@volvo.com, c=CA
Date: 2018.08.31 11:38:55 -04'00'
PAGE 1 OF 6
INFORMATION LETTER
CLIENT
ORDER
ROAD NUMBER
SAV.1E.2012MA
LI4407E
VIN (2NVY/4RKY...)
QTY
FROM
TO
FROM
TO
L885
1501
1524
L82K3F4501093
L82K0F4501214
24
Hamilton - Ontario - Metrolinx
L956
1601
1632
L82K2G9775325
L82K3G9775415
32
Hamilton - Ontario - Metrolinx
LA05
1633
1643
L82K4G9775553
L82K7G9775577
11
Hamilton - Ontario - Metrolinx
LA63
1701
1719
L82K5J9776430
L82K5J9776461
30
NFTA - Buffalo, New York
L877
1501
1501
L82K0F4500984
L82K0F4500984
1
NFTA - Buffalo, New York
L897
1502
1520
L82K1F4501223
L82K1G9775008
19
NFTA - Buffalo, New York
L947
1601
1624
L82KXG9775248
L82K3G9775320
24
NFTA - Buffalo, New York
LA24
1701
1716
L82K3H9775822
L82K5H9775837
16
NFTA - Buffalo, New York
LB22
1801
1816
L82KXJ9776486
L82K1J9776506
16
Red Deer - Alberta
L924
10104
10147
L82K0G9775517
L82KXG9775542
12
Red Deer - Alberta
L960
10021
10025
L82K9G9775418
L82K3G9775429
5
Red Deer - Alberta
LB25
10074
10084
L82K5J9776525
L82K8J9776535
10
Hamilton - Ontario - Metrolinx
PAGE 2 OF 6
INFORMATION LETTER
SAV.1E.2012MA
LI4407E
WARNING
FOLLOW YOUR INTERNAL SAFETY PROCEDURES.
PROCEDURE
1.1.
Open the battery compartment access door.
1.2.
Set the battery disconnect switch in the battery compartment to the off position. See Figure 1.
Battery disconnect
switch in OFF
position
Light to indicate if main
power is on or off
Figure 1 - Battery Emergency Disconnect Switch
1.3.
Open the ITS baselight box. See Figure 2.
Figure 2 - ITS Baselight Box
PAGE 3 OF 6
INFORMATION LETTER
1.4.
SAV.1E.2012MA
LI4407E
Remove the mounting screws of the upper ITS panel and carefully place the panel at the bottom of the ITS
box. Retain the mounting screws. See Figure 3.
Remove the mounting screws
Figure 3 - Upper ITS Panel
1.5.
With a grinder or any equivalent tool, cut an access hole in the structure according to the dimensions shown
in Figure 4.
6 7/8 in. (175 mm)
1 1/2 in. (38 mm)
2 3/16 in. (55 mm)
1 3/16 in. (30 mm)
Figure 4 - Dimensions of Hole to Cut in the Structure
PAGE 4 OF 6
INFORMATION LETTER
1.6.
SAV.1E.2012MA
LI4407E
Use angled access panel N93775 as a template to drill two holes, using a #11 drill pin, around the access
hole made in the previous step. See Figure 5.
Drill 2 holes with a
#11 drill pin
Figure 5 - Holes to Drill
1.7.
Remove the angled access plate N93775 and clean the inside of the plate with isopropyl alcohol or a degreaser
to obtain a good bonding surface. Clean the surface with a clean dry cloth to make sure the surface is dry.
1.8.
Place rectangular insulation N66254-75 on the cleaned N93775 plate. If needed, cut a portion of the insulation
to avoid interference with the metal around the access holes cut in the structure. See Figure 6.
1.9.
Remove the plastic skin from rectangular insulation N66254-75 and bond the insulation on to the clean surface
of plate N93775. Press firmly for 5 seconds for good adherence. See Figure 6.
Figure 6 - N93775 Plate with N66254-75 Insulation
PAGE 5 OF 6
INFORMATION LETTER
1.10.
SAV.1E.2012MA
LI4407E
Apply a 5/64 in. (2 mm) bead of N24232-01 white Sikaflex 252 around and between each hole of the N93775
plate. See Figure 7.
Figure 7 - N93775 Plate with a Bead of N24232-01 SikaFlex
1.11.
Install the N93775 on the structure using 2 N39340 rivets in the drilled holes. Clean off any excess of Sikaflex.
The plate needs to be watertight to protect the components in the ITS compartment.
1.12.
Drill the remaining holes on the N93775 plate using a #11 drill pin.
1.13.
Install 6 rivets N39340 on plate N93775.
1.14.
Apply N24232-01 white Sikaflex 252 on the head of the rivets and around to ensure the installation is watertight.
1.15.
plate.Affix the upper ITS panel with the retained mounting screws.
1.16.
Close the ITS box.
PAGE 6 OF 6
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TSB/Document ID: LI4407E
Replacement Service Bulletin Number:
MFR Communication Date: 2018-08-31
MFR Internal Campaign ID/Software Version:
Communication Type: Service Bulletin/Repair Instructions
NHTSA Components: EQUIPMENT:APPLIANCE:AIR CONDITIONER
MFR Component System:
MFR Component Subsystem:
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