SERVICE MANUAL BULLETIN
This Service Manual Bulletin is prepared by the Publications Department of New Flyer Industries
Canada ULC. Refer to details below.

SMB-147B
ISSUE DATE: Feb 16 2016

APPLICABILITY
VEHICLE LENGTH
VEHICLE TYPE

FUEL TYPE

 30ft.

 35ft.

 40ft.

 60ft.

 Xcelsior®

 MiDi®

 Invero®

 Low Floor

 High Floor

 Diesel

 Diesel/Electric

 CNG

 Fuel Cell

 Trolley/Electric

 Battery/Electric

 ALL
 ALL

 LNG

 ALL

SUBJECT

EMP Radiator - Preventive Maintenance

SECTION TITLE

PM - PREVENTIVE MAINTENANCE

INITIAL DETAILS

This bulletin provides revised OEM information on the preventive maintenance requirements for the EMP radiator.
This bulletin supersedes all prior information on this subject already provided in your New Flyer Service Manuals. Make this Service Bulletin available to service personnel to inform them of changed information.

REV B DETAILS

SMB147 dated Jul 31 2015 has been revised to:
❒ Provide additional Quarterly inspection requirements.
❒ Add new electrical connector inspection at the 6,000 mile interval.
❒ Add new dielectric grease locations/quantities.

SMB-147B

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 © 2016 New Flyer Industries Canada ULC

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SERVICE MANUAL BULLETIN
SMB-147B
1.

Weekly Preventive
Maintenance

1.1.

Radiator

debris from the cores. Repair all cooling
system leaks immediately.
3. Inspect the radiator mounting hardware
and tighten mounting bolts when necessary.

Test the function of the fan reverse switch
and LED indicator on a weekly basis or
any time service work is being performed
in the engine compartment. Operating the
fan reverse switch will not only clear debris
from the radiator core, but will also confirm
operation of the LED indicator which is
used to display diagnostic fault codes. If
any active fault codes are indicated, refer
to Section 6 of your New Flyer Service
Manual for troubleshooting and vendor
information.

4. Inspect for clearance between fan blades
and radiator core and fan shroud.

2.

Quarterly Preventive
Maintenance

8. Inspect the radiator and surrounding area
for evidence of corrosion as follows:

2.1.

Radiator

☞NOTE:

The inspection interval is dependent on
local operating conditions. Exposure to
harsh conditions such as salt, dirt, and
debris may require more frequent inspections. Operating in a less harsh environment, in combination with regular fan
reversal operation, may allow for extended
inspection intervals.

2.1.1.

6. Inspect fan blades for cracks, broken tips,
or other damage.
7. Inspect charge air cooler hoses and piping
for leaks, holes, cracks, or loose connections.

a. Inspect the steel fan shroud that
encloses the radiator for paint damage
or evidence of corrosion. Prime and
repaint exposed surfaces as necessary.

☞NOTE:

Stones and road debris may chip the powder coating on the steel fan shroud and
provide the potential for corrosion to begin.
If unprotected steel and a salt solution are
allowed to remain on the system, then the
aluminum heat exchanger may also suffer
corrosive damage due to stray voltage.

Inspect and clean the radiator on a quarterly basis or more frequently if operating
under harsh conditions.

b. Inspect the lower mounting bracket for
corrosion and accumulation of debris.
Clean, prime, and repaint as necessary.

Inspection

c. Inspect the bottom of the radiator and
drain plug for evidence of corrosion.
Clean, prime, and repaint as necessary.

1. Check hose connections and tighten
clamps as necessary. Cracked, swollen or
deteriorated hoses must be replaced.
2. Check radiator and charge air cooling
cores for leaks and for accumulation of dirt
which obstructs air passage. As required,
operate the fan reverse button on the
engine gauges panel to assist in removing

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5. Inspect air recirculation seals at baffles
around radiator assembly. Seals must be
in good condition.

d. Inspect the surrounding structural tubing for evidence of corrosion. Clean,
prime, and repaint as necessary.
9. Repair or replace any defective part. Refer
to Section 6 of your New Flyer Service
Manual for procedure.

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 © 2016 New Flyer Industries Canada ULC

SMB-147B

SERVICE MANUAL BULLETIN
SMB-147B
2.1.2.

Power Washing

DO NOT use excessive pressure or
place washer wand within close proximity to radiator/CAC core when power
washing otherwise damage to the fins
could result. Use a pressure of less
than 1200 psi to power wash and maintain a minimum distance of 9 inches
from the cores. DO NOT direct power
wash at product or safety labels.

Power wash the fan side and heat
exchanger side of the radiator in accordance with the following instructions. Use
an effective detergent, following manufacturer’s instructions, and then flush out the
cleanser using the reverse fan cycle and
low pressure clean water.
1. Clean the exterior of the radiator from the
engine compartment side on an “as
required” basis. Use power wash equipment at reduced pressures, not exceeding
1200 psi, and maintain a safe distance, no
closer than 9 inches from the heat
exchanger.

☞NOTE:

The use of steam cleaning or pressure
washing equipment can force moisture
into electrical connectors and cause
corrosion of the terminals Avoid directing high pressure spray toward any
electrical connectors.

☞NOTE:

Sodium Chloride (rock salt), Calcium Chloride, and Magnesium Chloride are salts
used for road surface treatment during the
winter months in areas prone to freezing.
These salts are highly corrosive and can
accumulate on the radiator assembly and
must be removed on a regular basis
(monthly when salts are applied to the
roads).

SMB-147B

Use a cleaning solution approved for effective removal of road grime and safe for aluminum. In winter months use a solution
that is effective for the removal of road
salts used in the area.
2. Clean the exterior of the radiator from the
streetside of the vehicle on an “as
required” basis. Close the screened radiator door and maintain a minimum distance
of 12 inches between the wand of the pressure washing equipment and the screened
door. Reduce power washing equipment to
not exceed 1200 psi.

☞NOTE:

If the radiator cannot be satisfactorily
cleaned to provide proper airflow across
the core, then the unit will need to be
removed from the vehicle for soaking and
cleaning. Refer to 5. “Two Year Preventive
Maintenance” on page 7 in this bulletin for
cleaning procedure.

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 © 2016 New Flyer Industries Canada ULC

3 of 7

SERVICE MANUAL BULLETIN
SMB-147B
2.1.3.

Grounding (Bonding) Wires

☞NOTE:

The radiator and coolant tubes are
grounded to the vehicle frame to minimize
any corrosion resulting from electro-potential differences between dissimilar metals
and exposure to electrolytic (salt) solutions. It is important that these grounding
connections be maintained.
❒ Inspect all ground wires for wear or frayed
insulation.
❒ Inspect the coolant supply and return
tubes and ensure that the stainless steel
clamps with ground wires are clean, free of
corrosion, and securely attached to the
tubes.

❒ Inspect the aft side of the radiator shroud
to ensure that the ground wire connection
is clean, free of corrosion, and securely
attached.
❒ Inspect the three ground wire connection
points on the streetside main frame rail to
ensure that the connections are not corroded and are securely attached.
2.1.4.

System Diagnostic Data
Observe any inactive faults on EMP cooling systems equipped with diagnostic
capabilities. Connect the EMPower Connect Service tool to the vehicle diagnostic
port and record any inactive faults. Clear
faults and check for any recurring faults at
subsequent inspections.

The fan shroud must not be grounded
to the vehicle frame unless the coolant
pipes are also grounded.

4 of 7

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 © 2016 New Flyer Industries Canada ULC

SMB-147B

SERVICE MANUAL BULLETIN
SMB-147B
3.

6,000 Miles (9,600 km)
Preventive Maintenance

3.1.

Radiator

3.1.1.

Radiator Power & Ground Studs

☞NOTE:

This inspection interval is dependent on
operating conditions and exposure to road
salts. Adjust inspection interval to suit conditions.
1. Locate the power and ground studs on the
radiator and pull boots back from passthrough stud. See “Fig. 1: Radiator Inspection” on page 5.

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