Complete workshop reapair service manual with electrical wiring diagrams for Freightliner Business Class / Business Class M2 Trucks (Model FL50, FL60, FL70, FL80, FL106, FL112, MB50, MB60, MB70, MB80, M2 100, M2 106, M2 106V, M2 112, M2 112V). It's the same service manual used by dealers that guaranteed to be fully functional and intact without any missing page.

This Freightliner Business Class / Business Class M2 Trucks service & repair manual (including maintenance, overhaul, disassembling & assembling, adjustment, tune-up, operation, inspecting, diagnostic & troubleshooting…) is divided into different sections. Each section covers a specific component or system with detailed illustrations. A table of contents is placed at the beginning of each section. Pages are easily found by category, and each page is expandable for great detail. The printer-ready PDF documents work like a charm on all kinds of devices.

“STI-457, S18 (9_10P).pdf”
Freightliner Business Class M2 Trucks Workshop Manual
Models: M2 100, M2 106, M2 106V, M2 112, M2 112V
STI-457, S18 (9/10P); 2,467 pages

Workshop Manual Contents
Group No. Group Title
00 . . . . . General Information
01 . . . . . . . . . . . . . . . Engine
09 . . . . . . . . . . . . . Air Intake
13 . . . . . . . . Air Compressor
15 . . . . . . . . . . . . . . . . . . . Alternators and Starters
20 . . . . . . . . . . . . . . . . . . . Engine Cooling/Radiator
25 . . . . . . . . . . . . . . . Clutch
26 . . . . . . . . . . Transmission
30 . . . . . . . . Throttle Control
31 . . . . . . . . . . . . . Frame and Frame Components
32 . . . . . . . . . . . Suspension
33 . . . . . . . . . . . . Front Axle
35 . . . . . . . . . . . . Rear Axle
40 . . . . . . . Wheels and Tires
41 . . . . . . . . . . . . . Driveline
42 . . . . . . . . . . . . . . . Brakes
46 . . . . . . . . . . . . . . Steering
47 . . . . . . . . . . . . . . . . Fuel
49 . . . . . . . . . . . . . . Exhaust
54 . . . . . . . . . . Electrical, Instruments, and Controls
60 . . . . . . . . . . . . . . . . . Cab
72 . . . . . . . . . . . . . . . Doors
82 . . . . . . . . . . . . . Windshield Wipers and Washer
83 . . . . . . . . . . . . . . . . . Heater and Air Conditioner
88 . . . . . . . . . . . . . . Hood, Grille, and Cab Fenders
90 . . . . . . . . . . . . . . . . . Fire Suppression Systems
91 . . . . . . . . . . . . . . . Seats and Restraint Systems
98 . . . . . . . . . . . . . . . . Paint
…

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“STI-267, S34 (1_08P).pdf”
Freightliner Business Class Trucks Workshop Manual
Models: FL50, FL60, FL70, FL80, FL106, FL112, MB50, MB60, MB70, MB80
STI-267, S34 (1/08P); 2,822 pages

Group No. Group Title
00 . . . . . General Information
01 . . . . . . . . . . . . . . . Engine
09 . . . . . . . . . . . . . Air Intake
13 . . . . . . . . Air Compressor
15 . . . . . . . . . . . . . . . . . . . Alternators and Starters
20 . . . . . . . . . . . . . . . . . . . Engine Cooling/Radiator
25 . . . . . . . . . . . . . . . Clutch
26 . . . . . . . . . . Transmission
30 . . . . . . . . Throttle Control
31 . . . . . . . . . . . . . Frame and Frame Components
32 . . . . . . . . . . . Suspension
33 . . . . . . . . . . . . Front Axle
35 . . . . . . . . . . . . Rear Axle
40 . . . . . . . Wheels and Tires
41 . . . . . . . . . . . . . Driveline
42 . . . . . . . . . . . . . . . Brakes
46 . . . . . . . . . . . . . . Steering
47 . . . . . . . . . . . . . . . . Fuel
49 . . . . . . . . . . . . . . Exhaust
54 . . . . . . . . . . Electrical, Instruments, and Controls
60 . . . . . . . . . . . . . . . . . Cab
72 . . . . . . . . . . . . . . . Doors
82 . . . . . . . . . . . . . Windshield Wipers and Washer
83 . . . . . . . . . . . . . . . . . Heater and Air Conditioner
88 . . . . . . . . . . . . . . Hood, Grille, and Cab Fenders
90 . . . . . . . . . . . . . . . . . Fire Suppression Systems
91 . . . . . . . . . . . . . . . Seats and Restraint Systems
98 . . . . . . . . . . . . . . . . Paint
…

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“Business Class Trucks Maintenance Manual.pdf”
148 pages

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“Business Class M2 Trucks Maintenance Manual.pdf”
153 pages

EXCERPT:
Drive Belts 01.00
Fan Belt Replacement, Kvumin$ M11 Engine
Replacement (See Fig. 1)
Fig. 1, Fan and Alternator Belt Installation
1. Remove the belt.
1.1 Loosen the locknut that secures the idler pulley to the fan bracket.
1.2 Turn the idler pulley adjustment capscrew until there is minimal distance between the pulley centers.
1.3 Remove the fan belt by slipping it off of the pulleys and working it over one fan blade at a time. Don’t roll or pry the belt off of the pulleys; the distance between the pulley centers must be short enough to allow belt removal without using force.
2. Install the belt.
2.1 Inspect the pulleys and used fan belt (even if a new belt is being installed) as instructed in Subject 100.
2.2 Make sure the distance between the pulleys is short enough to allow belt installation without using force.
2.3 Work the belt over the fan blades, one blade at a time. Install the belt on the pulleys without prying or rolling it into place.
Be sure the ribs on the belt are seated in the grooves on each pulley.
2.4 While keeping the belt seated in the pulley grooves, turn the idler pulley adjustment capscrew to increase the belt tension. Use your thumb to apply about 11 kg (25 lbs) of force at the center of the belt free-span to check the tension while turning the capscrew. When belt deflection equals one belt thickness per 305 mm (1 foot) of pulley-center distance, stop.
3. Adjust the belt.
3.1 If not already done, loosen the locknut that secures the idler pulley to the fan bracket.
3.2 Install a belt tension gauge at the center of the belt’s longest free-span.
3.3 Turn the idler pulley adjustment capscrew to increase or decrease belt tension, but do not adjust the tension to the full value with the idler pulley adjustment capscrew; belt tension can increase when the idler pulley locknut is tightened. Final tension must be 36 to 45 kg (80 and 100 lbs).
IMPORTANT: Do not overtighten the belt; too much tension shortens belt life and bearing life.
3.4 Tighten the idler pulley locknut 163 to 190 N·m (120 to 140 lbf·ft).
3.5 Loosen the idler pulley adjustment capscrew one-half turn, to prevent breakage.
3.6 Check the belt tension, and adjust it if needed.
3.7 If a new fan belt was installed, operate the engine for about 20 minutes, then check the belt tension. All new belts will lose tension after 20 minutes of operation.
3.8 If the fan belt tension is not between 36 to 45 kg (80 and 100 lbs), adjust the tension.
…