SMB-174 – Roof Cable Guide System for Articulated Vehicles – New Flyer Low Floor

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SMB-174 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: Jul 14 2017
SMB-174
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 Roof Cable Guide System for Articulated Vehicles
SECTION TITLE PM – PREVENTIVE MAINTENANCE
DETAILS This bulletin provides new inspection and replacement requirements
from ATG, the Articulated Joint OEM supplier for the roof Cable Guide
System on your New Flyer Vehicle.
Make this Service Bulletin available to service personnel to inform them
of this additional information that is not in your current manuals.
2 of 5 SMB-174
SERVICE MANUAL BULLETIN
SMB-174
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. Roof Cable Guide System
1.1. Purpose
This bulletin introduces a preventive maintenance
schedule for the Roof Cable
Guide System, located above the artic joint
bellows, to ensure the system functions
properly over the life of the vehicle. This
bulletin covers the various configurations
of the Roof Cable Guide System applicable
to diesel-electric, BRT, and trolley vehicles.
Perform the inspections that apply to
your specific vehicle configuration. See
“Fig. 1: Diesel-Electric Roof Cable Guide”
on page 3. See “Fig. 2: BRT Diesel-Electric
Roof Cable Guide” on page 4. See
“Fig. 3: Trolley Roof Cable Guide” on
page 4.
1.2. Yearly Preventive Maintenance
Perform the following inspections on a
yearly basis:
❒ Inspect the spring steel blade for cracks,
twists, kinks, or any other damage.
❒ Inspect the protective covering and cables
or hoses for fretting wear or other damage.
Replace any damaged covering, cables, or
hoses.
❒ Inspect the hoses and/or cables to ensure
they are properly clamped and supported.
❒ Inspect the pivot bearing for wear or looseness.
Replace the bearing if it rattles inside
the housing or if the bearing makes
scratching or groaning sounds during
operation.
☞NOTE:
The pivot bearing is located mid-span on
the spring steel blade and connects the
blade to the end of the A-frame.
❒ Inspect the plastic washers for wear and
replace as necessary.
☞NOTE:
Plastic washers are located on the spring
steel blade mounting brackets and clamp
plates and are used on diesel-electric
applications.
❒ Inspect the rollers on the chariot & carrier
assembly for wear and ensure that the rollers
operate smoothly in the guide rail.
Replace the chariot if the rollers are worn
or damaged.
☞NOTE:
The chariot & carrier assembly is located
mid-span on the spring steel blade and
connects the blade to the guide rail.
SMB-174 3 of 5
SERVICE MANUAL BULLETIN
SMB-174
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
Fig. 1: Diesel-Electric Roof Cable Guide
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4 of 5 SMB-174
SERVICE MANUAL BULLETIN
SMB-174
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
Fig. 2: BRT Diesel-Electric Roof Cable Guide
Fig. 3: Trolley Roof Cable Guide
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SMB-174 5 of 5
SERVICE MANUAL BULLETIN
SMB-174
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
1.3. Five Year Preventive Maintenance
Replace the following components every
five years:
❒ Spring steel blade. Refer to 1.3.1. “Spring
Steel Blade Replacement” on page 5 for
replacement procedure.
☞NOTE:
If there is any doubt as to how long the
steel blade has been in service, refer to the
production date stamped on the steel
blade
❒ Pivot bearing – replace at same time spring
steel blade is being replaced.
1.3.1. Spring Steel Blade Replacement
1. Remove all tywraps, clamps, and fasteners
that attach the hoses and cables to the
spring steel blade.
2. Disconnect the mounting brackets and
center pivot bearing from the vehicle
mounting points.
3. Remove the cable guide assembly from
the vehicle and move to a workbench for
further disassembly.
4. Note the location and remove all mounting
brackets from the steel blade.
5. Remove the center clamp plate and pivot
bearing (if equipped) from the steel blade.
6. Remove the end support brackets from the
steel blade.
7. Obtain a new spring steel blade and reassemble
in reverse order of removal.