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PREVOST X3-45 COMMUTER User Manual
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SECTION 10: FRONT I
-
B
E
AM
AX
L
E
D
DOB 1300
-
1556 | X3
-
45 Commuter P
A
-
1648 Maintenance Manual
F
irst releas
e Oct
202
0
3
SECTION CHA
NGE LOG
DESCRIPT
ION
DATE
1
2
3
4
5
6
280
282
Table of Contents
Section 00: General Information
9
Table of Contents
9
Section Change Log
10
Foreword
11
Schematics
11
Safety Notice
11
Data Plates and Certifications
12
Engine
12
Transmission
12
Drive Axle
12
Front Axles
12
Power Steering Pump
12
EPA Engine Label
13
Vehicle Identification Number (VIN)
13
Safety Certification
13
Fuel Tank Label
13
DOT Certification Label
13
Coach Final Record
13
Fastener
16
Fastener Strength Identification
16
Standard Torque Specifications
17
Sae
17
Metric
19
Self-Locking Fasteners
21
Recommendations for Reuse
21
Six Lobbed Socket Head
22
Hose Clamp Torque
25
Welding Process
26
Steel - Steel Welding
26
Steel with Stainless or Stainless with Stainless Welding
26
Steel - Stainless Steel Welding
27
Table of Contents
31
Section Change Log
32
Power Plant Cradle Installation
33
Torque Tables
33
Belt Tensioners and Idlers
34
System Overview
35
Volvo D13 Engine
35
Engine Harness
36
Engine Overview
39
Engine & Exhaust Aftertreatment System Diagram
41
Engine Oil
43
General
43
OBD20 Emission Compliant Volvo Engines Oil Viscosity
43
Oil Additives
43
Oil Quality
43
Oil Change
44
Oil Change Intervals
44
Oil Consumption
44
Synthetic Lubrication
44
Oil Filters
45
Oil Filters Change
45
Checking the Oil Level
46
Power Plant Assembly Removal
47
Power Plant Assy. Installation
51
Engine Mounts
52
Electronic Foot Pedal Assembly (Efpa) & Throttle Position Sensor
53
Automatic Belt Tensioners and Idler Pulley Inspection
54
Bearing Inspection
54
Automatic Belt Tensioner Bushing Wear
55
Belts and Idlers Visual Inspection
55
Engine Protection Strategy
56
Specifications
57
Section 03 : Fuel System
65
Section Change Log
67
Fuel System
68
Miscellaneous Torque
68
Torque Tables
68
Fuel System
69
Davco Fuel Pro 382 Primary Fuel Filter
70
Fuel Valve
70
Priming Fuel System
70
Filter Replacement
71
Secondary Fuel Filter
72
Secondary Fuel Filter Replacement
72
Fuel Pump Removal and Installation
73
Drain Plug
74
Fuel Lines and Flexible Hoses
74
Fuel Tank (Steel)
74
Removal
75
Fuel Tank Inspection
76
Installation
76
Fuel Tank Cradle Corrective Measures
77
Biodiesel Fuels
78
Biodiesel Fuels and the Engine
78
Blending
78
Fuel Specifications
78
Fuel Type
78
Air Cleaner (Dry Type)
79
Air Cleaner Servicing
79
Checking Restriction Indicator
79
Replacing the Filter
79
Accelerator Pedal
81
General Recommendations
81
Pedal Adjustment
81
Potentiometer Replacement
81
Specifications
83
Section 04 : Exhaust and Aftertreatment
85
Section Change Log
86
Exhaust System
87
Torque Tables
87
Miscellaneous Torques
90
Exhaust Aftertreatment System (Eats) Overview
91
Flexible Coupling Installation
92
Maintenance
92
Diesel Particulate Filter (Dpf)
93
Diesel Particulate Filter Assembly Removal
95
Removal
97
Selective Catalytic Reduction Converter
97
Assembling Catalytic Converter
99
Diffuser Adjustment
101
Diffuser Assembly
101
Diesel Exhaust Fluid
102
Diesel Exhaust Fluid (Def) Tank and Injection System
102
Maintenance
102
Def Tank Cleaning
104
Filler Neck Strainer
104
Pump Assembly Filter Element Replacement
105
Aftertreatment Hydrocarbon Doser
106
Replacement
106
Section 05: Cooling System
109
Section Change Log
110
Hose Clamps
111
Torque Tables
111
Pulleys, Idlers & Tensioners
112
Cooling Assembly
113
Miscellaneous
114
Description
115
Coolant Filter Housing Shut-Off Valve - Spindle Servicing
117
General Recommandations
117
Maintenance
117
Hose Clamps on Coolant Lines
119
Hoses
119
Constant-Torque Hose Clamps on Charge Air Cooler (Cac)
120
Maintenance
120
Thermostat Operation
120
Thermostat Replacement
120
Checking New Thermostat
121
Coolant
121
Coolant Level Sensor
121
Coolant Level Verification
121
Coolant Recommendations for Volvo D13 Engine
122
Thawing Cooling System
122
Coolant Sampling
123
Draining Cooling System
124
Filling Cooling System
125
Cooling System Descalers
126
Flushing
126
Reverse Flushing
127
Spin-On Coolant Filter
127
Cooling Assembly
128
Cooling Fan Replacement
130
Maintenance
130
Cooling Fan Shroud Removal & Installation
131
Cooling Pack (Radiator & Cac) Removal & Installation
132
Charge Air Cooler (Cac) in Vehicle Removal
138
Section 06: Electrical
143
Section Change Log
146
Alternators and Surrounding Components
147
Torque Tables
147
Electrical Connections - Batteries, Miscellaneous
148
General Description
153
Using Wiring Diagrams
153
Wiring Diagrams
153
Testing Circuits
154
Wire Identification
154
Wire Sizes and Colors
154
Circuit Breakers
156
Electric Cooling Fan Circuit Breakers
156
Main Circuit Breakers on Coaches
156
Spare Wires
156
VECR/VECF Circuit Breakers
156
Multiplex Fuses
157
Relays
157
Cooling Fan Connections
158
Electronic Ground
158
Corrosion Inhibitor
159
Electronic Modules
159
MCM
159
Precautions
159
Replacing the MCM
159
I/O-Ea and I/O-Eb Modules
160
Replacing I/O-EA or I/O-EB Modules
160
Uploading a Multiplex Program Update into the MCM
160
Electronic Modules Connector Pin-Out
161
Available Test Modes
165
Multiplex Input Test
165
Electric Motor Test Sequence
166
Test Sequence - Coaches
167
Alternator Test
168
Cooling Fans Cleaning Mode Validation
168
Forced Activation of the Cooling Fans
168
Driver Information Display Limp-Home Mode
169
Essential Functions to Operate the Vehicle
169
Limp-Home Modes
169
Lower Priority I/O-Ea & I/O-Eb Modules for Breakdown Service
169
Available Functions
170
Dl0 (Bbus Mux) Connection on the Telltale Panel and the Hvac Control Unit
171
Dl0 (Bbus Mux) Network
171
Networks
171
Spare Dl0 (Bbus Mux)
171
Probing Voltage on the Multiplex Circuits
172
Troubleshooting
172
Dl0 (Bbus Mux) Network Layout and Troubleshooting
173
Multiplex Troubleshooting Table
178
Electrical System Diagnostic through the DID
185
Electrical Compartments
186
Main Power Compartment (Rjb)
187
Front Electrical and Service Compartment (Fjb)
189
A/C Module
191
Engine Rear Start Panel
191
Entrance Door & Wiper Control Modules
191
Overhead Compartment Module
192
Nyct Auxiliary Systems in Parcel Rack
193
Batteries
194
Battery Installation
194
Agm Batteries
195
Battery Discharge Protection
196
Battery Removal and Installation
196
Main Electrical Shut-Off Switch
196
Agm Battery Rating
200
Battery Testing
200
Load Test
200
Removing Surface Charge
200
Visual Inspection
200
Battery Charging
201
Seat Usb Power Supply
201
Agm Battery Charging Precautions
203
Battery Equalization and Agm Batteries
203
Emergency Jump Starting
203
Cleaning and Inspection
204
Common Causes of Battery Failure
204
Troubleshooting
204
Battery Equalizer
205
Battery Voltage Warning" Pictogram
205
BATTERY Warning Pictogram MAY Appear as a Reminder
205
Supercapacitor Starting Module
205
Voltage Gauge Definitions
205
Starting Module Status Led
206
Starting the Vehicle with Depleted Batteries
206
Troubleshooting
206
Handling and Storage
207
Maintenance
207
Components
208
Prime Energy Management System
208
DID Display
209
Vanner 80 Series Battery Equalizer Fault Codes
209
Alternator Identification
210
Alternator Periodic Inspection
210
Alternators
210
Identifying a Defective Alternator - Back-Probing AE49 & AE52 Multiplex Modules Method
210
Adjustment
211
Alternator Drive Belt
211
Removal and Installation
211
Starter
212
Exterior Lighting
213
Headlamps
214
Led Modules and Turn Signal Module Replacement
214
Maintenance
214
Directional Turn Signal Replacement
215
Headlamp Aim Adjustment
215
Low & High Beam LED Module Replacement
215
Center Stoplights and Cyclops Light Removal and Replacement
217
Lamp Removal and Replacement
217
Stop, Tail, Directional, Back-Up, and Hazard Warning Lights
217
Clearance and Identification Lights Removal and Replacement
218
Clearance, Identification and Marker Lights
218
High-Mounted Stop Light Removal and Replacement
218
Lamp Removal and Replacement
218
License Plate Light
218
Baggage Compartment, Main Power Compartment Lights
219
Docking and Cornering Lights
219
Lamp Removal and Replacement
219
Marker Lights Removal and Replacement
219
Engine Compartment Lighting
220
Perimeter Lights
220
Replacement
220
Bulb Removal and Replacement
221
Control Panel Lighting
221
Driver's Area Ceiling Lights
221
Instrument Cluster Lights
221
Interior Lighting Equipment
221
Passenger Section Lighting
221
Stepwell Lights
221
Switch Lighting
221
LED Direct Lighting
222
LED Indirect Lighting / Overhead Compartment Interior Lighting
222
Removal and Replacement of Reading Lamp Bulb
222
Light Bulb Data
223
Section 07: Transmission
241
Allison Transmission
243
Torque Tables
243
Allison Automatic Transmission
244
Allison Transmission Maintenance
244
Description
244
Manual Fluid Level Check
244
Retarder
244
Cold Check
245
Fluid Level Check Using the Pushbutton Shift Selector
246
Hot Check
246
Recommended Automatic Transmission Fluid
247
Coolant Leakage
248
Fluid Contamination
248
Importance of Proper Fluid Level
248
Keeping Fluid Clean
248
Metal Particles
248
Fluid and Filter Change Information
249
Fluid and Filter Change Interval
249
Drain
250
Fluid and Filter Change Procedure
250
Refill Transmission
250
Allison Transmission Fluid Cooler Removal
251
Allison Transmission Removal
251
Breather
251
Cleaning and Inspection of Allison Automatic Transmission
251
Transmission with Retarder
251
Allison Transmission Installation
253
Allison Transmission Troubleshooting
255
Diagnostic Troubleshooting Codes (Dtc) - Allison 5Th Generation Controls
255
Display Sequence
255
Using Shift Selector for Accessing Diagnostics Information
255
Diagnostic Code Display and Clearing Procedure
256
Diagnostic Trouble Code Response
256
Exiting Diagnostic Mode
256
Diagnostic Troubleshooting Codes (Dtc) List - Allison
257
Specifications
262
Section 09: Propeller Shaft
263
Standard Torque Specification Tables
265
Propeller Shaft Description
266
Nyct Propeller Shaft Maintenance Directive
267
Lubrication Procedure
268
U-Joint Service - Quick Reference Guide
268
Inspection Recommendations
269
Grease Zerks
270
Mark Propeller Shaft (Phasing Marks)
270
Other Inspections
270
Propeller Shaft Removal
271
Removal
271
Inspect Companion Flange/Flange Yokes
272
Removal Procedure for Universal Joint Kit
272
Inspect Tube Yoke and Flange Yoke (if Applicable)
273
Removal Procedure for Slip Member Boot
273
Installation
274
Slip Member and Boot Installation
274
Propeller Shaft Installation
275
Universal Joint Installation
276
Explanation of Common Damages
277
Specifications
278
Section 10: Front I-Beam Axle
279
Section Change Log
281
Front I-Beam Axle and Related Components
282
Torque Tables
282
Front I-Beam Axle Hub, Rotor and Brakes
284
Description
285
Reference Manuals
285
Lubrication
287
Maintenance
287
Removal
288
Removal and Replacement
288
Replacement
288
Checking Lateral Slackness
289
Checking Vertical Slackness
289
Service Instructions for Steer Axle
289
Steering Knuckle Kingpin Inspection
289
Steering Tie Rod Inspection
289
Front Wheel Alignment
290
Inspection before Alignment
290
Major Front Wheel Alignment
290
Minor Front Wheel Alignment
290
Turning Angle Adjustment
290
Front Wheel Camber
291
Hydraulic Stop
291
Turn Adjustment
291
Camber Check
292
Front Axle Caster
292
Front Wheel Toe-In
292
Inspection and Adjustment
293
Alignment Specifications
294
Troubleshooting
295
Specifications
296
Section 11: Rear Axles
297
Section Change Log
299
Torque Tables
300
Zf A132 Drive Axle
300
Tag Axle
301
Checking and Adjusting the Differential Oil Level
302
Differential Oil Type
302
Maintenance
302
Zf A132 Drive Axle
302
Compact Bearing (Hub Unit) Axial Play Check
303
Differential Oil Change
303
Compact Bearing (Hub Unit) Grease Change
304
Drive Axle Flange Shaft Removal/Installation
304
Speed Sensors (Anti-Lock Brake System, ABS)
304
Removal and Reinstallation
306
Disassembly, Reassembly, Adjustment and Torque Chart
307
Procedure
307
Zf A132 Drive Axle Alignment
307
Removal and Reinstallation
308
Removing Tag Axle Along with Suspension Components
308
Removing Tag Axle Only
308
Tag Axle
308
Tag Axle Wheel Bearings
308
Unloading Tag Axle
308
Removing Transversal Radius Rod
309
Tag Axle Alignment
310
Specifications
312
Section 12: Brake and Air System
313
Section 12: Brake and Air System
316
Section Change Log
316
Brake and Air System
317
Torque Tables
317
Miscellaneous Torques
318
Air System
320
Air Tanks
320
Brakes
320
Installation
320
Wet Tank Automatic Drain Valve
320
Emergency/Parking Brakes Overrule Air Tank
321
Maintenance
321
Ping Tank
321
Primary Air Tank
321
Wet Air Tank
321
Accessory Air Tank
323
Kneeling Air Tank
323
Secondary Air Tank
323
Emergency Air System Fill Valves
324
Accessory Air Filter
325
Accessory Air Filter Drain
325
Accessory Air Filter Element Replacement
325
Air Dryer
326
Air Gauges (Primary, Secondary and Accessory)
326
Replacing the Desiccant Cartridge
330
Air Lines
332
Haldex Condenser - Separator
332
Periodic Inspection
332
Air Line Leakage Test
333
Air Line Operating Test
333
Flexible Hoses
333
Maintenance
333
Nylon Tubing
333
Air Compressor
334
Compressor Removal and Installation
334
Miscellaneous Valves
335
DOB 1300-1556 | X3-45 Commuter PA-1648 Maintenance Manual Section 12 Revised Jan 2021
338
Emergency / Parking Brake Control Valve (Pp-1)
338
Emergency / Parking Brake Overrule Control Valve (Rd-3)
338
Flip-Flop Control Valve (Tw-1)
338
Brake Pedal Adjustment
339
Dual Brake Application Valve (E-8P)
339
Maintenance
339
Parking Brake Alarm Switch
339
Stoplight Switches
339
Antilock Traction Relay Valve (Atr-6)
340
Brake Relay Valve (R-14)
340
Spring Brake Valve (Sr-7)
340
Pressure Protection Valve (Pr-4)
341
Pressure Reducing Valve Rv-3
341
Shuttle-Type Double Check Valve (DC-4)
341
Antilock Modulator (M-32Qr)
342
Inline Quick Release Valve (Qr-L)
342
Inversion Valve (Tr-2, Tr-3)
342
Emergency Door Opening Valves
343
Emergency Door Release System Inspection
343
Air System Troubleshooting
344
Brake Operation
344
Disc Brakes
345
Inspection Points
345
Visual and Functional Check
349
Wear Check of Pads
349
Wear Check of Disc
351
Wear Check of Pad/Disc -Drive Axle - Equipped with L-Bracket Wear Indicator
352
Wear Check of Pads/Disc - Front and Tag Axle - Equipped with Visual Wear Indicator
352
Checking Correct Functioning of the Adjuster / Checking that Caliper Operates Smoothly over Its Full Range of Movement
353
Continuous Wear Sensor Option
353
Caliper Check - Caliper Movement Along Guide Pins
356
Caliper Check - Caliper Running Clearance
356
Clearance Measurement Check of Bearing Variants (6)
357
Brake Pad Replacement
358
Checking Sealing Elements - Caliper Guide Pin Seals
358
Checking Sealing Elements - Tappets and Boot Assemblies
358
Air Brake Troubleshooting
359
Safe Service Procedures
359
Brake Chamber
362
Emergency/Parking Brake Manual Release
362
Maintenance
362
Brake Chamber Disassembly
363
Brake Chamber Installation
363
Brake Chamber Removal
363
Abs Components
364
Anti-Lock Braking System (Abs)
364
Bendix Ec-80 Controller
364
Troubleshooting and Testing
364
Sensors
365
Spring Clip
366
Bendix M-40Qr Pressure Modulator Valve
367
Bendix SAS-70 Steering Angle Sensor
367
Components
367
Removal of the Steering Angle Sensor
369
Fitting Tightening Torques
370
Section 13: Wheels, Hubs and Tires
373
Section 13: Wheels, Hubs and Tires
374
Specifications
374
Section Change Log
375
Tag Axle
376
Torque Tables
376
Wheel Nuts
376
Front Axle
377
Zf A132 Drive Axle
377
Inspection
378
Single Wheel Removal
378
Wheel Maintenance
378
Wheels
378
Dual Wheels
379
Inner Wheel Installation
379
Inner Wheel Removal
379
Inspection
379
Outer Wheel Installation
379
Outer Wheel Removal
379
Single Wheel Installation
379
Wheel Straightness Test
380
Drive Axle Wheel Studs
381
Front and Tag Axle Wheel Studs
381
Wheel Studs
381
Care of Wheels
382
Hub Mounted Wheels
382
Tag Axle Wheel Hubs
383
Tag Axle Hub Bearing Removal
384
Tag Axle Hub Unitized Bearing Inspection
384
Tag Axle Hub Bearing Installation
386
Front Axle Hub Bearing Inspection
391
Front Axle Wheel Hubs
391
Front Axle Hub Bearing Installation
392
Front Axle Hub Bearing Removal
392
Compact Bearing (Hub Unit) Axial Play Check
393
Compact Bearing (Hub Unit) Grease Change
393
Zf Drive Axle Wheel Hubs
393
Inflation Pressure
394
Tire Maintenance
394
Tire Matching
395
Tire Rotation
396
Wheel Balancing
396
Section 14: Steering
399
Section Change Log
401
Steering Column
402
Torque Tables
402
Miscellaneous Torques
403
Steering System Description
405
Description
406
Power Steering Gear
406
Power Steering Gear Removal
407
Troubleshooting
407
Bleeding Power Steering Hydraulic System
408
Hydraulic Pressure Test
408
Power Steering Hydraulic Pump
408
Removal and Installation
408
Steering Column Removal
410
Installation
411
Removal
411
Steering Wheel
411
Clockspring Replacement
412
Turning Angle Adjustment
412
Pitman Arm
413
Removal
413
Steering Linkage Adjustment
413
Adjustment
414
Installation
414
Tag Axle Unload - Switch Adjustment
414
Adjustment System Thread Lengths
415
Drag Link
415
Length Adjustment
415
Power Steering Fluid Condition
417
Power Steering Fluid Visual Inspection
417
Steering System Maintenance
417
Fluid Level Check
418
Power Steering Fluid Change
418
Power Steering Fluid Tank & Filter
418
Filter Element Replacement
419
Steering Stabilizer Damper
421
Steering System Play Inspection
421
Drag Link Maintenance
422
Front I-Beam Axle Tie Rod
422
Fine Adjustment Sleeve Play Inspection
424
Tie Rod Inspection Procedure
424
Tube Inspection
424
Drag Link Ball Joint Inspection for Corrosion
425
Tie Rod Ball Joint Inspection for Corrosion
425
Straight Body Type Ball Joint
426
Straight Body Type Ball Joint End Play and Looseness
426
Visual Inspection
426
Driving Tips
427
Front Wheel Alignment
427
Inspection before Alignment
427
Minor Front Wheel Alignment
427
Major Front Wheel Alignment
428
Turn Adjustment
428
Turning Angle Adjustment
428
Camber Check
429
Front Wheel Camber
429
Hydraulic Stop
429
Front Axle Caster
430
Front Wheel Toe-In
430
Inspection and Adjustment
431
Troubleshooting
433
Specifications
434
Section 16 : Suspension
457
Section Change Log
459
Front I-Beam Axle and Related Components
460
Torque Tables
460
Description
461
Air Springs
465
Front I-Beam Axle Suspension
465
Inspection
465
Removal
465
Installation
466
Shock Absorbers
466
Inspection
467
Installation
467
Removal
467
Inspection
468
Radius Rods
468
Radius Rod Assembly
469
Radius Rod Removal
469
Stripping down
469
Installation
470
Radius Rod Installation
470
Removal
470
Sway Bar
470
Rear Suspension
471
Air Springs
472
Inspection
472
Installation
472
Removal
472
Inspection
473
Shock Absorbers
473
Installation
474
Radius Rods
474
Removal
474
Air Line Test
475
Inspection
475
Normal Ride Height
475
Suspension Air System
475
Suspension Height Adjustment
475
Maintenance
476
Section 18: Body
491
Section Change Log
493
Torque Tables
494
Exhaust Aftertreatment System Access Door
496
Vehicle Exterior
496
Corrosion Prevention
497
Towing the Vehicle
497
Vehicle Exterior Maintenance
497
Vehicle Jacking Points
497
Vehicle Structure
497
Preventive Maintenance Schedule
499
Rust Inhibitor Application
500
Common Fiberglass Repair Procedure
505
Repair Using Fiberglass Cloth
505
Repair Using Fiberglass Paste
506
Typical Fiberglass Repair Procedure
506
Common Painting Procedure
507
New Paint Care
507
Paint Touchup
508
Painting
508
Safety
508
Surface Preparation and Paint Application
508
Coach Exterior Finishing and Body Repair
510
Zone 1
511
Front Bumper
512
Headlights
513
Rear View Mirrors
513
Windshield
515
Windshield Wipers
515
Entrance Door
522
Front Service Compartment Door
529
Front Cap
534
Emergency Exit Windows
535
Side Windows
535
Zone 2
535
Roof Escape Hatch
537
Engine Compartment Door
539
Rear Cap
539
Zone 3
539
Rear Fender
541
Engine Compartment R. H. Side Door Adjustment
542
Engine Radiator Door
546
Baggage Compartment Doors
548
Zone 5
548
WCL Cassette Compartment Door
551
Baggage Compartment Floors
552
Evaporator Compartment Door
557
Condenser Compartment Door
559
Fuel Filler Door
560
Front Fenders
561
Zone 6
561
X3 Smooth Side Panel Replacement Procedure
564
Zone 7
564
Body Panel and Window Spacing
573
American Seating Company Seats (Amseco)
579
AMSECO Fixed Seats
579
Passenger Seats
579
Upholstery Maintenance
579
Amseco Sliding Seats
580
Tarabus Floor Covering Repair or Replacement
582
Front Steps Replacement Procedure
584
Welding of Joint between White Safety Strip and "Tarabus" Floor Covering
587
Repair of a Welded Joint
589
Table of Contents
596
Chassis Hoisting Points
597
General Description
597
Hoisting and Towing Points
597
Axles Hoisting Points
599
Wheels as Hoisting Points
603
Towing
604
Before Towing Preparation
605
Electrical Power and Air Supply
606
Mechanical Release of the Emergency/Parking Brake
607
Drive Axle Flange Shafts Removal
609
Towing from the Front
612
First Lift
613
Second Lift - Front Tow Eye Pads as Lifting Point for Towing
615
Second Lift - Front Axle as Lifting Point for Towing
621
Towing with All Wheels on the Ground Using Rear Tow Eyes - Fitted on Dob Bus Number Series 2490-2789 and 1300-1606 Only
625
Precautions
626
Rear Tow Using Not Approved Lifting Points - for Emergency Situations Only
626
First Lift
628
Second Lift
630
Section 22: Heating and Air Conditioning
633
Section Change Log
635
High Capacity Compressor (Central Hvac System)
636
Torque Tables
636
High/Low Pressure Service and Receiver Tank Valves
637
Idlers & Tensioners
637
Central Hvac System Evaporator Compartment Arrangement
638
Hvac System Overview
638
Central Hvac System
639
Coil Cleaning
641
Driver's Unit
641
Hvac System Basic Maintenance
641
Passenger's Unit
641
Driver's Unit Air Filter
642
Passenger's Unit Air Filter
642
Evaporator Door Fresh Air Intake Filter
643
Overhead Compartment Fan Air Filter
643
Belt Replacement - Central System
644
Belt Tension Adjustment - Central System
644
Compressor Belts
644
Soldering
645
Torch Brazing
645
Compressor - Central A/Csystem
646
Electro-Magnetic Clutch
646
Hvac System Components
646
Maintenance - Shaft Seal Oil Collecting Tube Drain
646
Suction and Discharge Hose Connection
646
Maintenance - Oil Color & Level Check
647
Maintenance - Compressor Oil Change
648
Troubleshooting Guide
649
Brushless Evaporator Motor
650
Removal
650
Installation
651
Condenser (Central A/C)
652
Condenser Fan Control
652
Condenser Fan Removal
653
Receiver Tank
653
Filter Dryer
654
Replacement of the Filter-Dryer after Pumping down
654
Moisture Indicator
655
Shutoff Valve with Service Port
655
Liquid Refrigerant Solenoid Valve
656
Typical Malfunctions
656
Coil Replacement
657
Electrical Bypass/On Demand Opening of Liquid Refrigerant Solenoid Valves
657
Valve Disassembly
657
Valve Reassembly
657
Central System
658
Thermostatic Expansion Valve
658
Superheat Adjustment
659
Driver's Unit
660
Maintenance
660
Hot Water Pneumatic Valve
661
Valve Troubleshooting
661
Hot Water Circulating Pump
662
Hvac System Testing and Troubleshooting
663
On Demand Activation of Hot Water Circulating Pump
663
On Demand Display of A/Csystem High and Low Side Pressure
663
Temperature Sensors
663
Test Mode for Switches and Sensors
664
Modes of Operation
665
Test Mode for Electric Motors
665
Hvac Electrical System Troubleshooting
666
Air Conditioning
668
Expansion Valve
668
Leak Testing
671
Temperatures & Pressure Chart
671
Air Circulation in Driver's Area
672
Air Circulation in Passenger'sarea
672
Central Hvac System
672
Hvac Control Unit
674
Hvac System Operation
674
Passengers' Section Operation
675
Driver's Unit Hot Water Pneumatic Valve
676
Heating
676
Overhead Compartment Unit
676
Draining Heating System
677
Passenger's Unit Hot Water Pneumatic Valve
677
Bleeding Heating System
679
Cooling
679
Filling Heating System
679
Refrigerant
680
Refrigeration Cycle
680
Refrigerant System Clean-Out after Compressor Failure
682
Pumping down
683
Adding Vapor State Refrigerant
684
Charging System
686
Liquid Refrigerant Recovery
686
Evacuating System
687
Section 23: Accessories
705
Section Change Log
706
Torque Tables
707
Electric Horn Maintenance
709
Horn Installation
709
Hub Odometer
709
Installation
709
Operation
709
Removal
709
General Description
710
Windshield Wipers and Washers
710
Wiper Mechanism
710
Windshield Wiper Motor
711
Windshield Wiper Motor Replacement
711
Wiper Blades
711
Wiper Arms Installation
712
Starting the Vehicle after Afire Alarm
713
Troubleshooting
713
Checkout Procedure
714
Six Years & Twelve Years Maintenance
715
System Testing
715
Wheelchair Lift Cassette Installation
715
Wheelchair Lift Cassette Dismounting
718
Preventive Inspection and Maintenance
720
Snow Chain System
720
Positioning Requirements
723
Clever Device Ivn5
725
Nyct Auxiliary Systems
725
Motorola Communication Radio Power
726
Pedestrian Turn Warning Speakers Location
726
Mobileview Bus Camera Security System (Bcss)
728
4
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PREVOST X3-45 COMMUTER Specifications
General
Engine
Volvo D13
Transmission
Allison B500
Fuel Type
Diesel
Length
45 ft (13.7 m)
Width
102 in (2.6 m)
Horsepower
500 hp
GVWR
54, 000 lbs
Height
141 in
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