Caterpillar Caterpillar Articulated Truck 740B 740B

3. Turn the battery disconnect switch to the OFF position.

4. Attach a suitable lifting device to center drive shaft (1). The weight of center drive shaft (1) is approximately 60 kg (132 lb). The suitable lifting device should be positioned between cab (3) and radiator (4).:

5. Remove bolts (2) and lower center drive shaft (1) to the ground.

1. Install drive shaft (1) in the reverse order of removal.

a. Tighten bolts (2) to a torque of 270 ± 40 N·m (200 ± 30 lb ft).;

a. Install the steering frame lock. Refer to Operation and Maintenance Manual, 'Steering Frame Lock'.

b. Remove the center drive shaft. Refer to Disassembly and Assembly, 'Center Drive Shaft - Remove and Install'.

c. Remove the hitch drive shaft. Refer to Disassembly and Assembly, 'Hitch Drive Shaft - Remove and Install'.

WARNING: Personal injury or death can result from machine articulation or movement. Machine frames can move and a person can be crushed. Connect the steering frame lock link between the front and rear frames before working on machine. Do not disconnect the lock link until the machine is made operational and the commissioning procedure is completed.

WARNING: Before service work is begun, park the machine on a hard level surface. Block the wheels of the machine so unexpected movement will not occur. Unexpected movement of the machine can cause personal injury or death.

1. Chock the front wheels of the machine to prevent movement.

2. Raise the truck bed. Secure the truck bed in the raised position with Tooling (A). Remove the clamp from the cylinder and move the boot upward. Use two people to position the three Tooling (A). Position all three Tooling (A) on one cylinder.

Note: Lubricate all components with the oil that is being sealed before assembly.

Apply a thin coat of Tooling (B) onto seal ring (12) in order to hold the seal ring in position.

Attach Tooling (A) and a suitable lifting device to transmission (10). The weight of the transmission is approximately 805 kg (1775 lb).

Guide the transmission over shaft (13) and at the same time align the splines on the shaft with the internal gear in the transmission.

Ensure that the bolt holes in torque converter (11) line up with the threaded holes in the Transmission before installing bolts (9) and the washers. Tighten the bolts to a torque of 105 ± 20 N·m (77 ± 15 lb ft). Remove Tooling (A).

Install clip (8) and connect harness (7).

Connect harness assembly (5) and install tube assembly (4).

Install split clamp (3), strap (2), and line (1).

WARNING: Personal injury can result from driveline torque windup under load. Unequal wheel speed can result in driveline torque windup which can cause driveline components to be under load during disassembly. Relieve the driveline torque windup before disassembly.

Install the steering frame lock

Turn the battery disconnect switch to the OFF position

Use Tooling (A) in order to raise the front axle until one of the wheels clears the ground

Remove bolts (1) in order to disconnect drive shaft (2) from the front axle

Remove bolts (3) in order to disconnect drive shaft (2) from output transfer gear (4)

Use two people in order to remove drive shaft (2) from the machine

Enter the weight of the removed drive shaft

Install drive shaft (2) in the reverse order of the removal.

Drive shaft (2) installed correctly

Enter the torque of bolts (3) in N·m

Bolts (3) tightened to a torque of 135 ± 20 N·m (100 ± 15 lb ft)

Enter the torque of bolts (1) in N·m

Bolts (1) tightened to a torque of 135 ± 20 N·m (100 ± 15 lb ft)

Sign off on the front drive shaft installation