Caterpillar Cat 740 EJECTOR Articulated Truck (Prefix 3T7) Service Repair Manual Instant Download.pdf

Service Repair Manual
Models
740 Ejector Articulated Truck

Shutdown SIS
Previous Screen
Product: EJECTOR TRUCK
Model: 740 EJECTOR TRUCK 3T7
Configuration: 740EJ Articulated Truck 3T700001-UP (MACHINE) POWERED BY C18 Engine
Disassembly and Assembly
740 GC, 740 Ejector, 745 Articulated Truck Machine System
Media Number -M0082510-04 Publication Date -01/09/2015 Date Updated -23/08/2018
i07493571
Steering Cylinder - Remove and Install
SMCS - 4303-010
Removal Procedure
Table 1
Required Tools
Tool Part Number Description Qty
A
8S-7620 Base 1
8S-7650 Cylinder 1
350-7768 Electric Hydraulic Pump Gp 115V 1
B
1U-7552 Hydraulic Cylinder 1
C 9X-8257 Washer 2
D 155-3597 Wheel Chock 4
Cylinders equipped with lock valves can remain pressurized for very
long periods of time, even with the hoses removed.
Failure to relieve pressure before removing a lock valve or
disassembling a cylinder can result in personal injury or death.
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Ensure all pressure is relieved before removing a lock valve or
disassembling a cylinder.
At operating temperature, the hydraulic tank is hot and under pressure.
Hot oil and components can cause personal injury. Do not allow hot oil
or components to contact skin.
Remove the filler cap only when the engine is stopped, and the filler cap
is cool enough to touch with your bare hand. Remove the filler cap
slowly in order to relieve pressure.
NOTICE
Care must be taken to ensure that fluids are contained during
performance of inspection, maintenance, testing, adjusting, and repair
of the product. Be prepared to collect the fluid with suitable containers
before opening any compartment or disassembling any component
containing fluids.
Refer to Special Publication, PERJ1017, "Dealer Service Tool
Catalog" for tools and supplies suitable to collect and contain fluids on
Cat®
products.
Dispose of all fluids according to local regulations and mandates.
1. Use Tooling (D) to chock the front and rear of the machine.
Illustration 1 g03871100
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2. If necessary, disconnect grease hose assembly (2). Remove bolt (3) and the washer. Set the
grease line bracket to the side. Remove washer (4).
3. Place Tooling (C) on the top of washer (4). Install bolt (3), the washer, and washer (4) back
into the rod end of steering cylinder (1).
4. Use Tooling (A) to exert a force onto pin (6). Strike mounting bracket (5) for steering cylinder
(1) to help release pin (6).
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5. Remove bolt (3), the washer, and washer (4) and Tooling (C) from pin (6) at the rod end of
steering cylinder (1). If necessary, install the bolt and Tooling (C) back into the pin and use
Tooling (A) to fully remove the pin from the machine.
6. Use a suitable prybar to remove the steering cylinder from the mounting bracket at the rod end
of steering cylinder (1). Carefully swing the rod end of the steering cylinder away from the
machine.
7. Remove two face seals (7) and two O-ring seals (8) from both sides of the eye. Attach a
suitable lifting device to steering cylinder (1). The weight of steering cylinder (1) is
approximately 85 kg (187 lb).
8. Disconnect hose assemblies (9) and (10) from the head end of steering cylinder (1). Disconnect
grease hose assembly (11) from the head end of the steering cylinder.
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9. Remove bolt (13), washer (14), and washer (12) from the pin at the head end of steering
cylinder (1).
10. Place Tooling (C) on the top of washer (12). Install bolt (13), washer (14), washer (12), and
Tooling (C) back into the pin at the head end of the steering cylinder.
11. Use Tooling (B) to exert a force onto the pin in the head end of steering cylinder (1). Strike the
mounting bracket for the steering cylinder to help release the pin.
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Note: Place a suitable wedge between Tooling (B) and the A-frame to align Tooling (B) with
the pin.
12. Remove bolt (13), washer (14), washer (12), and Tooling (C) from the pin at the head end of
steering cylinder (1). If necessary, install the bolt and Tooling (C) back into the pin and use
Tooling (B) to fully remove the pin from the machine.
13. Remove pin (15) from the head end of steering cylinder (1). Remove Tooling (B) from the
machine. Remove bolt (13), washer (14), washer (12), washers (5), and Tooling (C) from the
head end of the steering cylinder.
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14. Use a suitable lifting device to carefully move steering cylinder (1) away from the machine.
Remove two face seals (16) and two O-ring seals (17) from both sides of the head end of the
steering cylinder. Place the steering cylinder on suitable cribbing.
Disassembly and Assembly Information
Table 2
Required Tools
Tool Part Number Part Description Qty
E 195-4609 Seal Pick 1
F - LOCTITE 648 -
G
FT-2802 Puller Plate 1
9U-6833 Nut 1
4C-9633 Puller Stud 1
6V-3160 Double Acting Cylinder 1
H 127-4904 Repair Stand 1
Cylinders equipped with lock valves can remain pressurized for very
long periods of time, even with the hoses removed.
Failure to relieve pressure before removing a lock valve or
disassembling a cylinder can result in personal injury or death.
Ensure all pressure is relieved before removing a lock valve or
disassembling a cylinder.
Note: Cleanliness is an important factor. Before you begin the disassembly procedure, the exterior of
the components should be thoroughly cleaned. This will help to prevent dirt from entering the internal
mechanism. Precision components can be damaged by contaminants or by dirt. Perform disassembly
procedures on a clean work surface. Keep components covered and protected at all times.
Note: Cleanliness is an important factor. Before assembly, all parts should be thoroughly cleaned in
cleaning fluid. Allow the parts to air dry. Wiping cloths or rags should not be used to dry parts. Lint
may be deposited on the parts which may cause later trouble. Inspect all parts. If any parts are worn
or damaged, use new parts for replacement.
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(1) Use Tooling (G) to remove the bearing and install the bearing.
(2) Tighten the bolt to a torque of 300 ± 30 N·m (221 ± 22 lb ft). Tighten the bolt again an additional
60° ± 5°. Replace a bolt that has been loosened or removed with a new bolt. Install the bolt with
threads that are clean and free of lubricant.
(3) Tighten the locknut to a torque of 8 ± 1.5 N·m (71 ± 13 lb in).
(4) Torque for head ... 600 ± 130 N·m (440 ± 100 lb ft)
(5) Use Tooling (G) to remove the bearing and install the bearing.
(6) Lubricate sealing lips with a thin covering of the lubricant that is being sealed.
(7) Apply Tooling (F) to the seal groove prior to assembling the wiper seal. Lubricate sealing lips
with a thin covering of the lubricant that is being sealed.
Installation Procedure
1. Ensure that Tooling (D) is installed to the front and rear of the machine.
2. Inspect all parts and clean all parts. If any parts are worn or damaged, use new Caterpillar parts
for replacement.
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3. Attach a suitable lifting device to steering cylinder (1). The weight of steering cylinder (1) is
approximately 85 kg (187 lb).
4. Use the suitable lifting device to carefully position steering cylinder (1). Install two face seals
(16) and two O-ring seals (17) into both sides of the head end of steering cylinder (1). Position
the head end of steering cylinder (1) into the mounting bracket on the front frame.
5. Install pin (15) into the head end of steering cylinder (1). Install bolt (13), washer (14), and
washer (12) into the pin at the head end of the steering cylinder.
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6. Strike the head of pin (15) with a suitable mallet. Continue to strike the pin and tighten the bolt
until the torque is maintained.
7. Connect hoses (9) and (10) to the head end of steering cylinder (1). Connect grease hose
assembly (11) to the head end of the steering cylinder.
8. Connect grease hose assembly (9) and hose assembly (10) to the head end of steering cylinder
(1). Connect hose assembly (11) from the rod end of steering cylinder (1).
9. Carefully swing the rod end of steering cylinder (1) to the machine. Install two face seals (7)
and two O-ring seals (8) into both sides of the eye. Install the rod end of the steering cylinder
into the mounting bracket on the hitch. Remove the nylon lifting sling and the hoist from the
steering cylinder.
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10. Install pin (6) into the rod end of steering cylinder (1). If necessary, position the grease hose
assembly bracket. Install bolt (3) and the washer, and (4), into the pin at the rod end of the
steering cylinder.
11. Tighten bolt (3). Strike the head of pin (6) with a suitable mallet. Tighten bolt (3). Continue to
strike the pin and tighten the bolt until the torque is maintained.
12. If necessary, connect grease hose assembly (2).
13. Remove Tooling (D) from the front and rear of the machine.
14. Reset the front suspension. Refer to Operation and Maintenance Manual, "Suspension System -
Check / Adjust".
15. Lubricate the steering cylinder bearings. Refer to Operation and Maintenance Manual,
"Steering Cylinder Bearings - Lubricate".
Copyright 1993 - 2020 Caterpillar Inc.
All Rights Reserved.
Private Network For SIS Licensees.
Wed Jan 22 10:47:34 UTC+0800 2020
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Shutdown SIS
Previous Screen
i06249734
Control Valve (Hoist) - Remove and Install
SMCS - 5051-010; 5136-010
Removal Procedure
Start By:
a. Install the steering frame lock.
b. Tilt the Cab.
c. Remove the left side wheel.
d. Remove the left side fender.
Personal injury or death can result from improper lifting or blocking.
When a hoist or jack is used to lift any part or component, stand clear of
the area. Be sure the hoist or jack has the correct capacity to lift a
component. Install blocks or stands before performance of any work
under a heavy component.
Approximate weights of the components are shown. Clean all surfaces
where parts are to be installed.
At operating temperature, the hydraulic tank is hot and under pressure.
1/3
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Hot oil and components can cause personal injury. Do not allow hot oil
or components to contact skin.
Remove the filler cap only when the engine is stopped, and the filler cap
is cool enough to touch with your bare hand. Remove the filler cap
slowly in order to relieve pressure.
NOTICE
containing fluids.
Refer to Special Publication, NENG2500, "Dealer Service Tool
Cat®
products.
1. Remove tube assembly (1). Disconnect hose assembly (2). Disconnect tube assemblies (3)
and reposition.
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2. Disconnect hose assembly (4) and tube assembly (5). Disconnect harness assemblies (6) and
(8). Disconnect tube assembly (7).
3. Remove bolts (9) and hoist control valve (10). Use two people to remove hoist control valve
(10). The weight of hoist control valve is approximately 34 kg (75 lb).
1. Install hoist control valve (10) in the reverse order of removal.
Wed Jan 22 10:48:30 UTC+0800 2020
3/3
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Shutdown SIS
Previous Screen
i06283417
Gear Pump (Brake Cooling) - Remove and Install
SMCS - 5073-010-BRK
Removal Procedure
NOTICE
containing fluids.
Refer to Special Publication, NENG2500, "Dealer Service Tool
Cat®
products.
1. Drain the transmission. Refer to the Operations and Maintenance Manual, "Torque
Converter, Transmission, and Transfer Gear Oil - Change" for the correct draining and
filling procedure.
2. Tilt the cab. Refer to the Operations and Maintenance Manual, "Cab - Tilt" for the correct
procedure.
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Right side of transmission
3. Disconnect hose assembly (2). Disconnect tube assembly (4) under gear pump (3).
4. Remove bolts (1) and the washers.
5. Remove gear pump (brake cooling) (3) and the O-ring seal.
1. Install gear pump (brake cooling) (3) in the reverse order of removal.
Wed Jan 22 10:49:26 UTC+0800 2020
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Shutdown SIS
Previous Screen
i06283402
Gear Pump (Brake Cooling) - Disassemble
SMCS - 5073-015-BRK
Disassembly Procedure
Start By:
a. Remove the brake cooling pump.
1. Remove relief valve (1) from body assembly (2).
1/4
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2. Remove bolts (3), washers (5), and seal washers (6) from body assembly (2).
3. Remove adapter (4) from body assembly (2).
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4. Remove lip seal (7), retaining ring (8), and lip seal (9) from adapter (4).
5. Remove plug (10) from adapter (4).
6. Remove O-ring seal (12) and dowels (13) from adapter (4).
7. Remove bearings (11).
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Caterpillar Cat 740 EJECTOR Articulated Truck (Prefix 3T7) Service Repair Manual Instant Download.pdf

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Caterpillar Cat 740 EJECTOR Articulated Truck (Prefix 3T7) Service Repair Manual Instant Download.pdf