The cab replacement procedure will vary depending upon the optional equipment on the vehicle. Some steps required, due to optional equipment, have been included. Inspect the vehicle for any special steps which may be required. The following procedures are intended to be used only as a guide.

1. Block the wheels.
2. Disconnect the negative battery cable. Refer to Battery Negative Cable Disconnection and Connection in Engine Electrical.
3. Open the hood.

Important: Tag all the components, including the following, during removal for proper location during installation:

•

The lines

•

The wires

•

The hoses

•	The harnesses

4. Remove the grille. Refer to Grille Replacement in Exterior Trim.
5. Remove the left and the right headlamp assemblies. Refer to Headlamp Replacement in Lighting Systems.
6. Recover the air conditioning refrigerant. Refer to Refrigerant Recovery and Recharging in Heating, Ventilation and Air Conditioning.
7. Remove the air conditioning pipes and the brackets. Refer to Evaporator Inlet Hose Replacement and Evaporator Outlet Hose Replacement in Heating, Ventilation and Air Conditioning.
8. Drain the coolant. Refer to Cooling System Draining and Filling in Engine Cooling.
9. Remove the heater pipes. Refer to Heater Inlet Hose Replacement , and to Heater Outlet Hose Replacement in Heating, Ventilation and Air Conditioning.
10. Remove the ground strap. Refer to Harness Routing Views in Wiring Systems.
11. Remove the main wire harness under the hood. Refer to Harness Routing Views in Wiring Systems.
12. Remove the clutch fluid pipe, if equipped.
13. Disconnect the transmission control cables. Refer to Shift Cable Replacement in Manual Transmission or Shift Cable Replacement in Automatic Transmission - Allison.
14. Disconnect the parking brake cable. Refer to Park Brake Cable Replacement in Park Brake.
15. Tilt the cab. Refer to Cab Tilting in General Information.



16. Remove the air brake hoses, if equipped, or the linkage to the brake master cylinder. Refer to the appropriate procedures in Brakes.
17. Remove the steering shaft at the steering gear. Mark the shaft and the gear in order to aid in reassembly. Refer to Lower Steering Shaft Assembly Replacement in Steering Wheel and Column.
18. Remove the cab lock assembly nuts and bolts.
19. Remove the cab lock cover.
20. Fasten a rope or strap securely to the cab lock. Use a hoist or chain block in order to keep the cab tilted.
21. Remove the torsion bar lever nuts and bolts.
22. Remove the torsion bar levers.
23. Remove the cab tilt support. Refer to Cab Tilt Support Replacement .
24. Lower the cab. Refer to Cab Tilting in General Information.
25. Remove each center pin by tapping with a hammer, while lowering the cab slowly.




Notice: When the cab is being removed, ensure that the lifting straps are not wrapped around the door frames. Otherwise, damage to the window channels may occur.

26. The trimmed cab weighs about 500 kg (1,340 lb).

26.1.

Use 4 commercial straps that are 152 mm (6 in) wide and about 3 m (10 ft) long in order to lift the cab from the chassis.

26.2.

Open the doors. Pass the straps into the cab through the door opening on each side through the rear of the cab.

26.3.

Connect the straps in the center.

26.4.

Close the doors.

27. Walk around the cab in order to make sure all components have been disconnected from the chassis.
28. Raise the cab slowly. Use the aid of a helper in order to guide the cab while the cab is being lifted.

1. Block the chassis wheels.

Notice: When the cab is being removed, ensure that the lifting straps are not wrapped around the door frames. Otherwise, damage to the window channels may occur.

2. The trimmed cab weighs about 500 kg (1,340 lb).

2.1.	Use 4 commercial straps that are 152 mm (6 in) wide and about 3 m (10 ft) long in order to lift the cab from the chassis.

2.2.	Open the doors. Pass the straps into the cab through the door opening on each side through the rear of the cab.

2.3.	Connect the straps in the center.

2.4.	Close the doors.




3. Apply grease to the following areas of the cab mounts:

•	The circumference area of the bracket where the washer comes in contact

•	The bushing inner surface in the side where the sleeve is inserted

•	At least 2 areas on both inside surfaces of the bracket where the washer comes in contact

•	Refer to Fluid and Lubricant Recommendations in Maintenance and Lubrication.




4. Install the left center pin and the right center pin.
5. Perform the following procedure:

5.1.	Hook a wire to the cab striker.

5.2.	Pull the safety lever.

5.3.	Tilt the cab slowly.

5.4.	Use the wire in order to keep the cab from floating up.

6. Extend the cab tilt support and lock it into position.

Notice: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.

7. Install the cab support nuts and bolts.

Tighten
Tighten the nuts and bolts to 68 N·m (50 lb ft).

8. Perform the following procedure in order to install the torsion bar levers:

8.1.	Locate the left and right identification marks before installation.

8.2.	Match the spline.

8.3.	Install the torsion bar levers.

8.4.	Install the torsion bar lever nuts and bolts.

Tighten
Tighten the bolts and nuts to 37 N·m (27 lb ft).

9. Use the match marks made during disassembly as a guide in order to apply grease to the steering shaft. Refer to Fluid and Lubricant Recommendations in Maintenance and Lubrication.
10. Insert the steering shaft on the steering unit. Refer to Lower Steering Shaft Assembly Replacement in Steering Wheel and Column.
11. Tighten the steering shaft bolt.

Tighten
Tighten the bolts to 61 N·m (45 lb ft).

12. Connect the throttle cable.
13. Connect the transmission cables. Refer to Shift Cable Replacement in Manual Transmission or Shift Cable Replacement in Automatic Transmission - Allison.
14. Connect the air brake hoses, if equipped, or the linkage to the brake master cylinder.
15. Connect the parking brake cable. Refer to Park Brake Cable Replacement in Park Brake.
16. Lower the cab. Refer to Cab Tilting in General Information.
17. Install the clutch fluid pipe, if equipped.
18. Install the main wire harness under the hood. Refer to Harness Routing Views in Wiring Systems.
19. Install the ground strap. Refer to Harness Routing Views in Wiring Systems.
20. Install the heater pipes. Refer to the Heater Inlet Hose Replacement or to Heater Outlet Hose Replacement in Heating, Ventilation and Air Conditioning.
21. Install the air conditioning pipes and the brackets. Refer to Evaporator Inlet Hose Replacement and Evaporator Outlet Hose Replacement in Heating, Ventilation and Air Conditioning.
22. Install the left and the right headlamp assemblies. Refer to Headlamp Replacement in Lighting Systems.
23. Install the grille. Refer to Grille Replacement in Exterior Trim.
24. Connect the negative battery cable. Refer to Battery Negative Cable Disconnection and Connection in Engine Electrical.
25. Recharge the air conditioning refrigerant to specification. Refer to Refrigerant Recovery and Recharging in Heating, Ventilation and Air Conditioning.
26. Refill the engine coolant to proper level. Refer to Fluid and Lubricant Recommendations in Maintenance and Lubrication.
27. Bleed the clutch system. Refer to Hydraulic Clutch Bleeding in Clutch.