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Product: EXCAVATOR
Model: 548 EXCAVATOR WRA
Configuration: 548 Log Loader WRA00001-UP (MACHINE) POWERED BY Engine C7.1
Disassembly and Assembly
548 General Forestry, 548 Log Loader Machine Systems
Media Number -M0096453-01
Publication Date -01/12/2019
Date Updated -02/01/2020
Actuator Motor (Air Distributor) - Remove and Install
SMCS - 7304-010-MQ; 7309-010-MQ; 7320-010-MQ
Removal Procedure
Illustration 1
1. Remove louvers (1).
i06716230
Illustration 2
2. Remove bolts (2) and duct (3).
Illustration 3
3. Remove louver (4). Repeat for the other side.
Illustration 4
Illustration 5
g01385149
4. Remove bolt (5) from duct (6). Repeat for the other side.
g01385144
g01385146
5. Remove duct (6).
Illustration 6
g01385198
6. Remove bolts (8), bolts (9), and cover (7).
7. Remove bolts (10).
Illustration 7
g01385393
8. Remove bolts (11) and tray (12).
Illustration 8
g01385485
9. Disconnect harness assemblies (13) and (15). Remove actuator motors (14) and (16).
Installation Procedure
1. Install actuator motors (14) and (16) in the reverse order of removal.
Copyright 1993 - 2024 Caterpillar Inc. All Rights Reserved. Private Network For SIS Licensees.
Thu Aug 29 22:54:14 UTC+0530 2024
Product: EXCAVATOR
Model: 548 EXCAVATOR WRA
Configuration: 548 Log Loader WRA00001-UP (MACHINE) POWERED BY Engine C7.1
Disassembly and Assembly
548 General Forestry, 548 Log Loader Machine Systems
Media Number -M0096453-01
Publication Date -01/12/2019 Date Updated -02/01/2020
Blower Motor (Air Conditioner, Heater) - Remove and Install
SMCS - 7304-010-BW; 7309-010-BW; 7320-010-BW
Removal Procedure
Start By:
a. Remove the heating and air conditioning unit.
Illustration 1
g01280877
1. Disconnect harness assemblies (1), (2), and (3).
2. Remove plate (4).
i06716813
6.
Illustration 2
g01280882
3. Remove duct (5).
Illustration 3
g01280883
4. Disconnect harness assemblies (6) and (7).
Illustration 4
g01280893
5. Disconnect harness assembly (8). Cut cable strap (9).
Remove bolts (10) and (12). Remove duct assembly (11).
5
7. Remove screws (13) and blower motor (14).
Installation Procedure
1. Install blower motor (14) in the reverse order of removal.
a. Tighten bolts (13) to a torque of 1.7 ± 0.5 N·m (15 ± 4 lb in).
Copyright 1993 - 2024 Caterpillar Inc. All Rights Reserved. Private Network For SIS Licensees. Thu Aug 29 22:53:40 UTC+0530 2024
Product: EXCAVATOR
Model: 548 EXCAVATOR WRA
Configuration: 548 Log Loader WRA00001-UP (MACHINE)
Disassembly and Assembly
548 General Forestry, 548 Log Loader Machine Systems
Media Number -M0096453-01
Boom - Remove and Install
SMCS - 6501-010
S/N - WRA1-UP
Removal Procedure Table 1
i07952048
Personal injury can result from hydraulic oil pressure and hot oil.
Hydraulic oil pressure can remain in the hydraulic system after the engine has been stopped. Serious injury can be caused if this pressure is not released before any service is done on the hydraulic system.
Make sure all of the work tools have been lowered to the ground, and the oil is cool before removing any components or lines. Remove the oil filler cap only when the engine is stopped, and the filler cap is cool enough to touch with your bare hand.
When you are using hydraulic cylinders and puller studs, always ensure that the rated capacity of the puller stud meets or exceeds the rated capacity of the hydraulic cylinder. If the puller stud does not meet or exceed the rated capacity of the hydraulic cylinder, a sudden failure of the puller stud could occur. The sudden failure of the puller stud could result in personal injury or death.
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. Make sure that boom (1) is in a level position.
2. Disconnect the rod end of the boom cylinders from the boom. Refer to Disassembly and Assembly, "Boom Cylinder - Remove and Install".
3. Release the system pressure. Refer to Disassembly and Assembly , "System PressureRelease".
4. Attach Tooling (A) and a suitable lifting device to boom (1). The combined weight of boom (1) and of the stick cylinder is approximately 3086 kg (6803 lb). Apply slight lifting tension to boom (1).
Illustration 1
g01707259
Illustration 2
g01706114
Illustration 3
g06493381
5. Disconnect harness assembly (2) and hose assemblies (3).
6. Remove nut (5) and reposition harness assembly (4).
Illustration 4
7. Remove bolts (6) and plate (7).
g06114096
Illustration 5
g06114101 Typical Example
8. Attach Tooling (B), Tooling (C), and a suitable lifting device to boom foot pin assembly (9), as shown. The combined weight of boom foot pin assembly (9) and of Tooling (B) is approximately 237 kg (523 lb).
9. Use Tooling (B), Tooling (C), and the suitable lifting device to remove boom foot pin assembly (9).
10. Use Tooling (A) and the suitable lifting device to remove boom (1).
11. Remove spacers (8).
Installation Procedure
1. Install boom (1) in the reverse order of removal.
a. Apply Tooling (D) to the bores of the upper frame and to boom foot pin assembly (9).
b. Use Tooling (E) to install boom foot pin assembly (9).
Copyright 1993 - 2024 Caterpillar Inc. All Rights Reserved.
Network For SIS Licensees. Thu Aug 29 22:50:40 UTC+0530 2024
Product: EXCAVATOR
Model: 548 EXCAVATOR WRA
Configuration: 548 Log Loader WRA00001-UP (MACHINE) POWERED BY Engine C7.1
Disassembly and Assembly
548 General Forestry, 548 Log Loader Machine Systems
Media Number -M0096453-01
Publication Date -01/12/2019
Brush Guard-Remove and Install
SMCS - 7158
Removal Procedure
Table 1
Required Tools
1. Turn the battery disconnect switch to the OFF position.
Illustration 1 g06114988
2. Cut all cable straps and disconnect harness assembly (1).
Date Updated -02/01/2020
i06788412
2
3. Remove bolts (2).
3
4. Attach Tooling (A) and a suitable lifting device to brush guard (3). The weight of brush guard (3) is approximately 230 kg (507 lb).
5. Remove bolts (4) and brush guard (3).
Installation Procedure
1. Install brush guard (3) in the reverse order of removal.
Copyright 1993 - 2024 Caterpillar Inc. All Rights Reserved. Private Network For SIS Licensees. Thu Aug 29 22:50:59 UTC+0530 2024
Illustration
g06115192
Illustration
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Product: EXCAVATOR
Model: 548 EXCAVATOR WRA
Configuration: 548 Log Loader WRA00001-UP (MACHINE) POWERED BY Engine C7.1
Disassembly and Assembly
548 General Forestry, 548 Log Loader Machine Systems
Media Number -M0096453-01
Publication Date -01/12/2019
Bucket Linkage - Remove and Install
SMCS - 6513-010
Removal Procedure Table 1
Required Tools
Date Updated -02/01/2020
Start By:
a. Remove the bucket.
1. Park the machine on a hard, level surface. Fully extend the stick.
Illustration 1 g02625968
2. Fully extend bucket cylinder (1) to rest bucket linkage assembly (2) on a flat surface.
i07475696
3. Release the system pressure.
Illustration 2
g02625973
4. Install suitable cribbing under bucket cylinder (1).
Illustration 3
g06333108
5. Attach a suitable lifting device to bucket linkage assembly (2). The weight of bucket linkage assembly (2) is approximately 136 kg (300 lb).
6. Remove bolts (3), pins (4), and bucket linkage assembly (2).
Installation Procedure
1. Install bucket linkage assembly (2) in reverse order of removal.
a. Tighten bolts (3) to a torque of 325 ± 40 N·m (240 ± 30 lb ft).
Copyright 1993 - 2024 Caterpillar Inc.
For SIS
Thu Aug 29 22:33:06 UTC+0530 2024
Product: EXCAVATOR
Model: 548 EXCAVATOR WRA
Configuration: 548 Log Loader WRA00001-UP (MACHINE) POWERED BY Engine C7.1
Disassembly and Assembly
548 General Forestry, 548 Log Loader Machine Systems
Media Number -M0096453-01 Publication Date -01/12/2019 Date Updated -02/01/2020
Cab
and
Cab Riser - Remove and Install
SMCS - 7301-010; 7620-010
Removal Procedure Table 1
Required Tools
Tool Part Number Part Description Qty A 311-1362 Vacuum Gauge Gp 1
B 439-3939 Link Bracket 4
Start By:
a. Release the system pressure.
Personal injury can result from hydraulic oil pressure and hot oil.
Hydraulic oil pressure can remain in the hydraulic system after the engine has been stopped. Serious injury can be caused if this pressure is not released before any service is done on the hydraulic system.
Make sure all of the work tools have been lowered to the ground, and the oil is cool before removing any components or lines. Remove the oil filler cap only when the engine is stopped, and the filler cap is cool enough to touch with your bare hand.
i06790276
Personal injury can result from contact with refrigerant.
Contact with refrigerant can cause frost bite. Keep face and hands away to help prevent injury.
Protective goggles must always be worn when refrigerant lines are opened, even if the gauges indicate the system is empty of refrigerant.
Always use precaution when a fitting is removed. Slowly loosen the fitting. If the system is still under pressure, release it slowly in a well ventilated area.
Personal injury or death can result from inhaling refrigerant through a lit cigarette.
Inhaling air conditioner refrigerant gas through a lit cigarette or other smoking method or inhaling fumes released from a flame contacting air conditioner refrigerant gas, can cause bodily harm or death.
Do not smoke when servicing air conditioners or wherever refrigerant gas may be present.
Use a certified recovery and recycling cart to properly remove the refrigerant from the air conditioning system.
1. Recover the refrigerant. Refer to Service Manual, SENR5664, "All Products Air Conditioning and Heating R134a for All Caterpillar Machines" for the recovery and the charging procedure. Refer to Special Publication, NENG2500, "Air Conditioning Tools" for the correct tools.
Illustration 2
2. Remove cap assembly (1).
3. Attach an air supply hose to Tooling (A). Apply 276 to 414 kPa (40 to 60 psi) of air pressure. This procedure will pull a vacuum on the hydraulic system.
4. Raise the cab and the cab riser. Refer to Operation and Maintenance Manual, "Cab TiltingRaise".
5. Turn the battery disconnect switch to the OFF position.
Illustration 3
g06116116
6. Disconnect harness assemblies (2) and (3).
7. Remove clip (4) (not shown).
8. Remove bolts (5) and reposition the bracket out of the way.
g02520937
4
9. Disconnect hose assemblies (6) and (7).
Illustration 5
10. Disconnect hose assemblies (8).
11. Disconnect hose (9).
Illustration 6
12. Disconnect hose (10) and remove bolt (11).
Illustration
g06116154
g06116167
g06116174
7
13. Disconnect hose assemblies (12).
14. Disconnect hoses (13).
8
15. Disconnect ground strap (14).
16. Lower the cab and the cab riser. Refer to Operation and Maintenance Manual, "Cab TiltingLower".
17. Turn the battery disconnect switch to the OFF position.
Illustration
g06116185
Illustration
g06116188
Illustration 9
Typical Example
g06116206
18. Attach Tooling (B) and a suitable lifting device to cab (15). The weight of cab and cab riser (18) is approximately 1946 kg (4290 lb).
Illustration 10
g06116381
19. Remove pin (17) and disconnect cable assembly (16).
20. Release the tension on cab tilt cylinder (18). Position suitable cribbing under cab tilt cylinder (18).
21. Remove pin (19) and reposition cab tilt cylinder (18) out of the way.
Illustration 11
g06116414
22. Remove bolt (20) and pin assembly (21). Repeat this Step for the other side.
Illustration 12 g06116206
Typical Example
23. Use Tooling (B) and the suitable lifting device to remove cab and cab riser (15).
Installation Procedure
1. Install cab and cab riser (15) in the reverse order of removal.
a. Tighten bolts (20) to a torque of 50 ± 10 N·m (37 ± 7 lb ft).
Copyright 1993 - 2024 Caterpillar Inc. All Rights Reserved.
Private Network For SIS Licensees. Thu Aug 29 22:51:16 UTC+0530 2024
Product: EXCAVATOR
Model: 548 EXCAVATOR WRA
Configuration: 548 Log Loader WRA00001-UP (MACHINE) POWERED BY Engine C7.1
Disassembly and Assembly
548 General Forestry, 548 Log Loader Machine Systems
Media Number -M0096453-01 Publication Date -01/12/2019 Date Updated -02/01/2020
Cab Tilt Cylinder - Remove and Install
SMCS - 5102-010; 7341-010
Removal Procedure
Personal injury can result from hydraulic oil pressure and hot oil.
Hydraulic oil pressure can remain in the hydraulic system after the engine has been stopped. Serious injury can be caused if this pressure is not released before any service is done on the hydraulic system.
Make sure all of the work tools have been lowered to the ground, and the oil is cool before removing any components or lines. Remove the oil filler cap only when the engine is stopped, and the filler cap is cool enough to touch with your bare hand.
1. Release the system pressure.
2. Tilt the cab. Refer to Operation and Maintenance Manual, "Cab Tilting" for the correct procedure.
i06739871
DOWNLOAD LINK
For some reason if link does not work download this pdf and then click