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NHTSA ID Number: 10127059
Manufacturer Communication Number: SMB177
Summary
This Service Manual Bulletin provides new inspection and replacement requirements for the coolant hoses located above the SDS enclosure on specifically equipped buses.
64 Affected Products
Vehicles
MAKE | MODEL | YEAR |
NEW FLYER | XD35 | 2010-2017 |
NEW FLYER | XD40 | 2010-2017 |
NEW FLYER | XD60 | 2012-2017 |
NEW FLYER | XDE35 | 2010-2017 |
NEW FLYER | XDE40 | 2009-2017 |
NEW FLYER | XDE60 | 2013-2017 |
NEW FLYER | XN35 | 2013-2017 |
NEW FLYER | XN40 | 2011-2017 |
NEW FLYER | XN60 | 2010-2017 |
SMB-177
ISSUE DATE: Dec 06 2017
HVAC Coolant Hose Inspection
PM – PREVENTIVE MAINTENANCE
This bulletin provides new inspection and replacement requirements for the coolant hoses located above the SDS enclosure installed on your New Flyer vehicle.
This bulletin applies to all Xcelsior® models fitted with a front rooftop HVAC unit manufactured by Thermo King or MCC.
Make this Service Bulletin available to service personnel to inform them of changed information.
SEOCONTENT-START
SMB-177 1 of 5
SERVICE MANUAL BULLETIN
This Service Manual Bulletin is prepared by the Publications Department of New Flyer Industries
Canada ULC. Refer to details below.
The New Flyer vehicles described in this manual may be protected by one or more
patents and design applications or registrations in the United States and Canada,
and in other countries. Refer to “Vehicle Patent Information” in this manual.
Copyright © 2017 New Flyer Industries Canada ULC
ISSUE DATE: Dec 06 2017
SMB-177
APPLICABILITY
VEHICLE LENGTH 30ft. 35ft. 40ft. 60ft. ALL
VEHICLE TYPE
Xcelsior® MiDi® Invero®
ALL
Low Floor High Floor
FUEL TYPE
Diesel Diesel/Electric CNG LNG
ALL
Fuel Cell Trolley/Electric Battery/Electric
SUBJECT HVAC Coolant Hose Inspection
SECTION TITLE PM – PREVENTIVE MAINTENANCE
DETAILS This bulletin provides new inspection and replacement requirements for
the coolant hoses located above the SDS enclosure installed on your
New Flyer vehicle.
This bulletin applies to all Xcelsior® models fitted with a front rooftop
HVAC unit manufactured by Thermo King or MCC.
Make this Service Bulletin available to service personnel to inform them
of changed information.
2 of 5 SMB-177
SERVICE MANUAL BULLETIN
SMB-177
The New Flyer vehicles described in this manual may be protected by one or more
patents and design applications or registrations in the United States and Canada,
and in other countries. Refer to “Vehicle Patent Information” in this manual.
Copyright © 2017 New Flyer Industries Canada ULC
1. Quarterly Preventive
Maintenance
1.1. HVAC Coolant Hose Inspection
Inspect the overhead HVAC coolant hoses
on a quarterly basis as follows:
1. Open the SDS enclosure and locate the
two coolant hoses above the SDS upper
shelf. See “Fig. 1: HVAC Coolant Hoses”
on page 2.
Fig. 1: HVAC Coolant Hoses
2. Open the center aisle HVAC access door
and locate the opposite ends of the two
coolant hoses. See “Fig. 2: Coolant Hoses
Access” on page 2.
3. Inspect hoses for any evidence of leakage
or weeping at the end fittings. Replace
both hoses if leakage or weeping is evident.
Refer to 2.1. “HVAC Coolant Hose
Replacement” on page 3 in this bulletin for
replacement procedure.
Fig. 2: Coolant Hoses Access
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SMB-177 3 of 5
SERVICE MANUAL BULLETIN
SMB-177
The New Flyer vehicles described in this manual may be protected by one or more
patents and design applications or registrations in the United States and Canada,
and in other countries. Refer to “Vehicle Patent Information” in this manual.
Copyright © 2017 New Flyer Industries Canada ULC
2. Four Year Preventive
Maintenance
Open the SDS access door and confirm
whether a spill tank assembly is installed
above the SDS enclosure.
❒ Refer to 2.1. “HVAC Coolant Hose
Replacement” on page 3 of this bulletin if a
spill tank assembly is not installed.
❒ Refer to 2.2. “HVAC Coolant Hose
Replacement with Spill Tank Assembly” on
page 4 of this bulletin if a spill tank assembly
is installed.
2.1. HVAC Coolant Hose Replacement
Allow heating system to cool and
relieve system pressure. Keep away
from hot coolant and surfaces to avoid
injury.
Replace the HVAC coolant hoses, located
above the SDS enclosure, every four
years.
1. Set the Battery Disconnect switch to the
OFF position.
2. Close the coolant supply and return
valves, located under the driver’s platform
and at the booster pump location in the
engine compartment.
3. Drain the coolant from the rooftop HVAC
unit by disconnecting the coolant hoses
under the driver’s platform and drain into a
suitable container.
DO NOT allow coolant to drip onto electronic
equipment in the SDS enclosure
when removing the HVAC coolant
hoses. Use plastic sheets or similar
means to protect any electronic equipment
located beneath the HVAC coolant
hoses.
4. Open the SDS enclosure and locate the
two coolant hoses above the SDS upper
shelf. See “Fig. 1: HVAC Coolant Hoses”
on page 2.
5. Loosen the coolant hoses at the connection
to the copper lines and drain into a
suitable container. Disconnect the hoses
from copper line once coolant has completely
drained.
6. Open the center aisle HVAC access door
and locate the opposite ends of the two
coolant hoses.
7. Use a backup wrench and loosen each
coolant hose fitting from the HVAC unit and
allow any coolant to drain into a suitable
container.
8. Disconnect and remove both hoses from
the SDS enclosure. Discard hoses.
9. Install new hoses, ensuring threads on
mating fittings are dry. Torque hoses, using
a backup wrench, to 108 to 113 ft-lb. (146
to 153 Nm).
10.Reinstall the coolant hoses under the
driver’s platform. Torque hose clamps to 80
in-lb. and torque again to 80 in-lb. after 30
minutes.
☞NOTE:
If using power torque driver, ensure tool
RPM does not exceed 75 RPM.
11.Open the coolant supply and return shutoff
valves located below the driver’s platform
and at the booster pump location in the
engine compartment.
12.Set the Battery Disconnect switch to the
ON position.
13.Fill and deaerate the cooling/heating system.
Refer to Section 6 & 10 of your New
Flyer Service Manual for fill and deaeration
procedure.
14.Check for leaks and repair as required.
4 of 5 SMB-177
SERVICE MANUAL BULLETIN
SMB-177
The New Flyer vehicles described in this manual may be protected by one or more
patents and design applications or registrations in the United States and Canada,
and in other countries. Refer to “Vehicle Patent Information” in this manual.
Copyright © 2017 New Flyer Industries Canada ULC
2.2. HVAC Coolant Hose Replacement
with Spill Tank Assembly
Allow heating system to cool and
relieve system pressure. Keep away
from hot coolant and surfaces to avoid
injury.
Replace the HVAC coolant hoses, located
above the SDS enclosure, every four
years.
1. Set the Battery Disconnect switch to the
OFF position.
2. Close the coolant supply and return
valves, located under the driver’s platform
and at the booster pump location in the
engine compartment.
3. Drain the coolant from the rooftop HVAC
unit by disconnecting the coolant hoses
under the driver’s platform and drain into a
suitable container.
DO NOT allow coolant to drip onto electronic
equipment in the SDS enclosure
when removing the HVAC coolant
hoses. Use plastic sheets or similar
means to protect any electronic equipment
located beneath the HVAC coolant
hoses.
4. Locate the drain hose and shutoff valve at
the lower front section of the SDS enclosure.
See “Fig. 3: HVAC Coolant Hoses”
on page 5.
5. Open the shutoff valve at the end of the
hose and drain any coolant from the primary
collection tank. Close the shutoff
valve once all coolant has been drained.
6. Open the SDS enclosure and locate the
two coolant hoses above the SDS upper
shelf.
7. Loosen the hose clamps and disconnect
the two coolant hoses connected to the
90° fittings on the spill tank assembly.
8. Remove the fasteners that attach the spill
tank assembly to the SDS rack structure
and remove the spill tank assembly.
9. Locate the two coolant hoses that pass
through the funnel and skirt assembly.
10.Loosen the coolant hoses at the connection
to the copper lines and drain into a
suitable container. Disconnect the hoses
from copper line once coolant has completely
drained.
11.Open the center aisle HVAC access door
and locate the opposite ends of the two
coolant hoses.
12.Use a backup wrench and loosen each
coolant hose fitting from the HVAC unit and
allow any coolant to drain into a suitable
container.
13.Disconnect and pull both hoses out
through the rubber skirt on the funnel
assembly. Discard hoses.
SMB-177 5 of 5
SERVICE MANUAL BULLETIN
SMB-177
The New Flyer vehicles described in this manual may be protected by one or more
patents and design applications or registrations in the United States and Canada,
and in other countries. Refer to “Vehicle Patent Information” in this manual.
Copyright © 2017 New Flyer Industries Canada ULC
14.Install new hoses, ensuring threads on
mating fittings are dry. Torque hoses, using
a backup wrench, to 108 to 113 ft-lb. (146
to 153 Nm).
15.Replace the spill tank assembly, using
original fasteners.
16.Reinstall coolant hoses on the 90° fittings
on the spill tank assembly. Torque hose
clamps to 80 in-lb. wait 30 minutes, then
torque again to 80 in-lb.
☞NOTE:
If using power torque driver, ensure tool
RPM does not exceed 75 RPM.
17.Reinstall the coolant hoses under the
driver’s platform. Torque hose clamps to 80
in-lb. and torque again to 80 in-lb. after 30
minutes.
☞NOTE:
If using power torque driver, ensure tool
RPM does not exceed 75 RPM.
18.Open the coolant supply and return shutoff
valves located below the driver’s platform
and at the booster pump location in the
engine compartment.
19.Set the Battery Disconnect switch to the
ON position.
20.Fill and deaerate the cooling/heating system.
Refer to Section 6 & 10 of your New
Flyer Service Manual for fill and deaeration
procedure.
21.Check for leaks and repair as required.
Fig. 3: HVAC Coolant Hoses
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s0700440b.svg
SMB177
https://www.nhtsa.gov/recalls?nhtsaId=10127059
https://static.nhtsa.gov/odi/tsbs/2017/MC-10127059-9999.pdf
- CONTAINS ALUGARD PLUS FOR COMPATIBLITY WITH ALL ETHYLNE GLYCOL-BASED COOLANTS in automobiles and light duty trucks.Fit Type: Universal
- FIGHTS CORROSION, SCALING AND RUST while protecting all cooling system metals (including aluminum)
- HIGH-QUALITY ADDITIVES PROTECT AGAINST LEAKS and won’t harm gaskets, hoses, plastics or original vehicle finish
- PRE-MIXED YELLOW FORMULA IS READY-TO-USE in a 50/50 ratio with deionized water to protect all modern engine components from winter freezing (-34F) and summer boiling (265F).
- To use it in all makes and models designed to use ASTM D3306
- Provides protection down to -34 degree fahrenheit
- Helps prevent rust and corrosion
- A patented organic acid corrosion inhibitor package to provide extended engine protection against rust and corrosion
- Contains 30 – 50 ppm of denatonium benzoate as a bittering agent
- Package Weight: 4.227 kg
- Product Type: Auto Part
- Package Quantity: 1
- No Batteries Required
- Embittered - Contains Bittering Agent
- CONCENTRATE ANTIFREEZE AND COOLANT: Efficient formula is compatible with all vehicle cooling systems, providing fast-acting and long-lasting protection on all cooling system metals against rust and corrosion
- NON-ABRASIVE FORMULA: Created with Organic Acid Technology, this ethylene glycol-based coolant formula is compatible with other antifreeze and coolant formulations. This item contains a bittering agent called Denatonium Benzoate.
- ALL VEHICLE: Versatile and formulated for use in all American, Asian, and European automobiles including cars and low/medium to heavy duty trucks of all makes, models, and years
- SAFE FOR FILLS AND TOP-OFFS: The amber color will not effect the antifreeze currently in your cooling system
- LIFETIME PERFORMANCE: Provides cooling system protection for your automobile's entire lifetime with proper maintenance
- 1 GALLON ENGINE ANTIFREEZE/COOLANT: Fully compatible with other extended life antifreeze/coolants. This item contains a bittering agent called Denatonium Benzoate.
- PROTECTS: Advanced formulation prevents rust & corrosion protecting all engine cooling system components
- DESIGNED FOR NORTH AMERICAN VEHICLES: Recommended for use with Ford, Chrysler, and GM vehicles that require an orange organic acid technology formula
- GUARANTEED: When installed as part of a complete flush and fill, PEAK guarantees this coolant will provide service life protection of up to 150,000 miles or 5 years.
- 50/50 PREDILUTED FOR QUICK TOP OFFS: Already prediluted to make topping off your cooling system a breeze
- UNSURPASSED FREEZE PROTECTION AND ANTI-BOIL PERFORMANCE outperforms industry standards
- ORGANIC ACID TECHNOLOGY RESISTS RUST, SCALE & CORROSION while protecting all cooling system metals (including aluminum)
- HIGH-QUALITY ADDITIVES PROTECT AGAINST LEAKS and won’t harm gaskets, hoses, plastics or original vehicle finish
- ORANGE CONCENTRATE FORMULA should be mixed with clean tap water or demineralized water at 50/50 ratio for temperatures -34 to 265F; 60/40 for -62 to 270F; and 70/30 for -84 to 267F
- 1 Gallon Jug of Prestone AF2100 Antifreeze
- 1 ANF Brands Sponge
- Compatible with all vehicles, including all makes, models, years, and fluid colors; supports OAT, POAT, HOAT & IAT.
- Provides antifreeze protection down to -34°F and antiboil/overheat protection up to +265°F.
- Ready to Use Formula: Prediluted 50/50 solution. contains a bittering agent.
- For use in all makes and models of cars and light duty trucks
- Compatible with any antifreeze/coolant, regardless of color
- Good for 5 years or 150,000 miles
- Prevents corrosion and helps keep cooling system running more efficiently
- Protection against temperature extremes and rust corrosion of all cooling system metals, including aluminum; contains 30-50 ppm of denatonium benzoate as a bittering agent
- 1 GALLON ENGINE ANTIFREEZE/COOLANT: Fully compatible with other extended life antifreeze/coolants. This item contains a bittering agent called Denatonium Benzoate.
- PROTECTS: Advanced formulation prevents rust & corrosion protecting all engine cooling system components
- DESIGNED FOR ASIAN VEHICLES: Recommended for use with Acura, Honda, Infiniti, Mitsubishi, Nissan, Subaru, and Suzuki vehicles that require a BLUE Phosphate-enhanced Organic Acid Technology (POAT) formula
- GUARANTEED: When installed as part of a complete flush and fill, PEAK guarantees this coolant will provide service life protection of up to 150,000 miles or 5 years.
- 50/50 PREDILUTED FOR QUICK TOP OFFS: Already diluted to make topping off your cooling system a breeze
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