Complete workshop repair service manual with electrical wiring diagrams for Freightliner Columbia Trucks (Models: CL112, CL120). It's the same service manual used by dealers that guaranteed to be fully functional and intact without any missing page.

This Freightliner Columbia 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-481, S7 (9_10P).pdf”
Freightliner Columbia Trucks Workshop Manual
Models: CL112, CL120
STI-410, S21 (6/10P); 2,385 pages

Workshop Manual Contents
Group No. Group Title
00 ........... GeneralInformation
01 ..................... Engine
09 ................... AirIntake
13 .............. AirCompressor
15 ................... Alternators and Starters
20 ................... EngineCooling/Radiator
25 ..................... Clutch
26 ................ Transmission
30 .............. ThrottleControl
31 ............. Frame and Frame Components
32 ................. Suspension
33 .................. FrontAxle
35 .................. RearAxle
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
91 ............... Seats and Restraint Systems
98 ...................... Paint
…

— — — — — — — — — — — — — — — — — — — — — — — — — — —

“STI-409-2 (5_14).pdf”
Freightliner Columbia Maintenance Manual
Models: CL112, CL120
STI-409-2 (5/14); 145 pages

EXCERPT:
Vehicle Receipt, Storage, and Pre-Delivery Information 00.03
Hoses and Electrical Wiring Routing Standards

Cooling System
1. Cooling system hoses must clear all moving parts by a minimum of 1/4 inch (6 mm).
2. The 1-inch (25-mm) hose from the surge tank to the engine must be free of sumps and have allowance for engine torque.
3. All hoses from the engine hard pipes must be wrapped in convoluted tubing.
4. Hoses that are protected with convoluted tubing may be secured with tie straps to clear the inner fenders.
5. Cooling system hoses should not be twisted or kinked.
6. Cooling system hoses must be routed at least 6 inches (152 mm) from a heat source if the heat source does not have a heat shield. If a heat shield is provided, the hose must be routed at least 3 inches (76 mm) from the heat source.

HVAC System
1. Cushion clamps are required to support all A/C lines. Butterfly or figure-8 clamps (two cushion clamps) may be used to prevent rubbing or chafing.
2. Heater hoses that are protected with convoluted tubing may be fastened with tie straps. If not protected with convoluted tubing, only cushion clamps or butterfly clamps may be used for heater hoses.
3. A/C lines cannot be secured to air lines, fuel lines, or electrical wires.
4. HVAC hoses should be protected from damage by routing them away from hazards of heat, wheel splash (water, gravel, ice), human traffic, and moving parts of the vehicle.
5. HVAC hoses should be routed away from sharp points and edges (such as nuts, bolts, brackets, and frame rail edges), moveable parts, and sources of abrasion, cutting, pinching, or crushing.
NOTE: If hoses are covered with convoluted tubing, they may touch any of the above.
6. Hoses that are protected with convoluted tubing may come in contact with the bends on frame rails and filters.
7. HVAC hoses must be routed at least 6 inches (152 mm) from a heat source if the heat source does not have a heat shield. If a heat shield is provided, the hose must be routed at least 3 inches (76 mm) from the heat source.
8. All HVAC hoses must be routed so that regularly serviced components, such as fuel filters, fuel/water separators, oil filters, air filters, belts, and fill and drain plugs, are readily accessible for adjustment or replacement without the need to relocate or remove the hoses.
9. All A/C hoses in the engine compartment must have convoluted tubing.
10. If cushion clamps are used over convoluted tubing at existing clamp points, no additional tie straps or tape is needed.
11. When convoluted tubing is installed on the heater hose where it routes past the splash shield on the front right-hand side of the firewall, and if it uses existing clamps, no additional tie straps or tape is needed.

Auxiliary Heater
All auxiliary heater lines are deck-mounted hard piping with rubber hose at both ends. No additional tie
straps are required.

Engine Plumbing
…