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Disassembly and Assembly
302.5C Mini Hydraulic Excavator Machine Systems
MediaNumber-RENR9147-00
PublicationDate-01/09/2005
Shutdown SIS
DateUpdated-13/09/2005
Accumulator (Hydraulic Pilot) - Remove and Install
SMCS - 5077-011-PS; 5077-012-PS
Removal Procedure
Start By:
Release the hydraulic system pressure. Refer to Disassembly and Assembly, "Hydraulic System Pressure - Release".
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, NENG2500, "Caterpillar Dealer Service Tool Catalog" for tools and supplies suitable to collect and contain fluids on Caterpillar products.
Dispose of all fluids according to local regulations and mandates.
Open the engine access door. 1.
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i02391113
Illustration 1g01194305
Remove accumulator (1) . 2.
Installation Procedure
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, NENG2500, "Caterpillar Dealer Service Tool Catalog" for tools and supplies suitable to collect and contain fluids on Caterpillar products.
Dispose of all fluids according to local regulations and mandates.
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Illustration 2g01194305
Install accumulator (1). Tighten accumulator (1) to a torque of 30 ± 5 N·m (22 ± 4 lb ft).
Close the engine access door.
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Product:
Disassembly and Assembly
302.5C Mini Hydraulic Excavator Machine Systems
MediaNumber-RENR9147-00
Blade - Remove and Install
Removal Procedure
Required Tools
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i02373056
Illustration 1g01183791
Use Tooling (A) in order to remove retaining ring (1). Remove pin (2) . 3.
Illustration 2g01183848
Secure blade cylinder (4) to boom cylinder (3) with a suitable lifting sling and Tooling (B) . 4.
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6.
7.
Illustration 3g01183873
Position suitable blocking under blade (7) .
Use Tooling (A) in order to remove retaining ring (5). Remove pin (6). Repeat for the opposite side.
Move the machine away from blade (7). The weight of blade (7) is approximately 145 kg (320 lb).
Illustration 4g01196494
8.
Use Tooling (C) in order to remove bearings (8) and (9) from blade (7) .
Installation Procedure
Required Tools
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Illustration 5g01196515
Lower the Temperature of bearings (8) and (9). Use Tooling (D) in order to install bearings (8) and (9) to blade (7) .
Illustration 6g01183873
Position the machine to blade (7). The weight of blade (7) is approximately 145 kg (320 lb).
Install pin (6). Use Tooling (A) in order to install retaining ring (5). Repeat for the opposite side. 3.
Remove the suitable blocking under blade (7) .
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1.
2.
Illustration 7g01183848
Remove the suitable lifting sling and Tooling (B) from blade cylinder (4) and boom cylinder (3). Position blade cylinder (4) .
Illustration 8g01183791
Install pin (2). Use Tooling (A) in order to install retaining ring (1) . 6. Copyright 1993 - 2018 Caterpillar Inc. All Rights Reserved. Private Network For SIS Licensees.
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Product:
Disassembly and Assembly
302.5C Mini Hydraulic Excavator Machine Systems
Blade Cylinder - Remove and Install
SMCS - 7562-010-BG
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.
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i02368669
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, NENG2500, "Caterpillar Dealer Service Tool Catalog" for tools and supplies suitable to collect and contain fluids on Caterpillar products.
Dispose of all fluids according to local regulations and mandates.
Note: Cleanliness is an important factor. Before the disassembly procedure, the exterior of the component should be thoroughly cleaned. This will help to prevent dirt from entering the internal mechanism.
Note: Put identification marks on all lines, on all hoses, on all wires, and on all tubes for installation purposes. Plug all lines, hoses, and tubes. This helps to prevent fluid loss and this helps to keep contaminants from entering the system.
Rotate the upper structure to a 45 degree angle. Position the blade and the bucket on the ground. 1.
Release the hydraulic system pressure. Refer to Disassembly and Assembly, "Hydraulic System Pressure - Release".
Illustration 1g01182205
Remove cover (1) .
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Attach a suitable lifting device to blade cylinder (6). Disconnect hose assemblies (4) and (5) .
Use Tooling (A) in order to remove retaining ring (7). Remove pin (8) .
Use Tooling (A) in order to remove retaining ring (3). Remove pin (2). Remove blade cylinder (6). The weight of blade cylinder (6) is approximately 25 kg (55 lb).
Disassembly and Assembly Information
Required Tools
Cylinders equipped with lock valves can remain pressurized for very long periods of time, even with the hoses
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.
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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, NENG2500, "Caterpillar Dealer Service Tool Catalog" for tools and supplies suitable to collect and contain fluids on Caterpillar products.
Dispose of all fluids according to local regulations and mandates.
Illustration 3g01182267
(1) Apply Tooling (D) to the threads and tighten the nut to a torque of 500 ± 50 N·m (369 ± 37 lb ft).
(2) Apply Tooling (D) to the threads. Use Tooling (F) to tighten the head to a torque of 450 ± 50 N·m (332 ± 37 lb ft).
(3) Apply Tooling (C) to the seal groove prior to installation.
(4) Lubricate the seals with the lubricant that is being sealed.
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Installation Procedure
Required Tools
Tool
A 1P-1864 Retaining Ring Pliers As 1
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, NENG2500, "Caterpillar Dealer Service Tool Catalog" for tools and supplies suitable to collect and contain fluids on Caterpillar products.
Dispose of all fluids according to local regulations and mandates.
Note: Cleanliness is an important factor. Before the assembly procedure, the exterior of the component should be thoroughly cleaned. This will help to prevent dirt from entering the internal mechanism.
Illustration 4g01182212
Attach a suitable lifting device to blade cylinder (6) and position blade cylinder (6). The weight of blade cylinder (6) is approximately 25 kg (55 lb).
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2.
Install pin (8). Use Tooling (A) in order to install retaining ring (7) .
3. Illustration 5g01182205
Install pin (2). Use Tooling (A) in order to install retaining ring (3). Connect hose assemblies (4) and (5) .
Install cover (1) . 4. Copyright 1993 - 2018 Caterpillar Inc. All Rights Reserved. Private Network For SIS Licensees.
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Product: NO EQUIPMENT SELECTED
Model: NO EQUIPMENT SELECTED
Configuration: NO EQUIPMENT SELECTED
Disassembly and Assembly
302.5C Mini Hydraulic Excavator Machine Systems
MediaNumber-RENR9147-00
PublicationDate-01/09/2005
Blower Motor (Heater) - Remove and Install
SMCS - 7304-010-BW
Removal Procedure
Start By:
Shutdown SIS
DateUpdated-13/09/2005
Remove the seat. Refer to Disassembly and Assembly, "Seat - Remove and Install".
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.
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i02362264
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.
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, NENG2500, "Caterpillar Dealer Service Tool Catalog" for tools and supplies suitable to collect and contain fluids on Caterpillar products.
Dispose of all fluids according to local regulations and mandates.
Note: Cleanliness is an important factor. Before the disassembly procedure, the exterior of the component should be thoroughly cleaned. This will help to prevent dirt from entering the internal mechanism.
Note: Put identification marks on all lines, on all hoses, on all wires, and on all tubes for installation purposes. Plug all lines, hoses, and tubes. This helps to prevent fluid loss and this helps to keep contaminants from entering the system.
1.
Recover the air conditioner refrigerant from the air conditioner system. Refer to Service Manual, SENR5664, "Air Conditioning and Heating Systems with R-134a Refrigerant" for the correct procedure. Refer to Special Publication, NEDG5065, "Air Conditioning Tools" for the correct tools.
Drain the coolant from the cooling system into a suitable container for storage or disposal. Refer to Operation and Maintenance Manual, "Cooling System Coolant (ELC) - Change". 2.
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Illustration 1g01178997
Open access door (1) .
Illustration 2g01179008
Remove bolts (2) . 4.
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5.
Illustration 3g01179031
Remove switch assemblies (3) and disconnect the harness assemblies. Remove knob (4) and the nut. Remove duct assembly (5) .
Illustration 4g01179036
6.
Remove support assembly (6) .
Illustration 5g01179057
7.
Disconnect harness assemblies (7). Disconnect hoses (8) and hose assemblies (9) .
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Illustration 6g01179092
Remove heater assembly (10) .
Illustration 7g01179358
Remove cover (11) and filter (12) . 9.
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Illustration 8g01179970
Remove four bolts (13) and reposition duct (14) . 10.
Remove blower motor (15) . 11.
Installation Procedure
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, NENG2500, "Caterpillar Dealer Service Tool Catalog" for tools and supplies suitable to collect and contain fluids on Caterpillar products.
Dispose of all fluids according to local regulations and mandates.
Note: Cleanliness is an important factor. Before the assembly procedure, the exterior of the component should be thoroughly cleaned. This will help to prevent dirt from entering the internal mechanism.
Illustration 9g01179970
Position blower motor (15) . 1.
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2.
Position duct (14) and install four bolts (13) .
Illustration 10g01179358
Install cover (11) and filter (12) . 3.
Illustration 11g01179092
Position heater assembly (10) . 4.
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Illustration 12g01179057
Connect hoses (8) and hose assemblies (9). Connect harness assemblies (7) . 5.
Illustration 13g01179036
Install support assembly (6) . 6.
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7.
Illustration 14g01179031
Position duct assembly (5). Connect the harness assemblies and install switch assemblies (3). Install knob (4) and the nut.
Illustration 15g01179008
Install bolts (2) . 8.
Illustration 16g01178997
Close access door (1) . 9.
10.
Fill the cooling system. Refer to Operation and Maintenance Manual, "Cooling System Coolant (ELC) - Change".
11.
Charge the air conditioner system. Refer to Service Manual, SENR5664, "Air Conditioning and Heating Systems with R-134a Refrigerant" for the correct procedure. Refer to Special Publication, NEDG5065, "Air Conditioning Tools" for the correct tools.
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End By: Install the seat. Refer to Disassembly and Assembly, "Seat - Remove and Install". Copyright 1993 - 2018 Caterpillar Inc. All Rights Reserved. Private Network For SIS Licensees. Mon Nov 26 14:13:29 UTC+0200 2018
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Disassembly and Assembly
302.5C Mini Hydraulic Excavator Machine Systems
Boom - Remove and Install
Removal Procedure Required Tools
Start By: Removethestickcylinder.RefertoDisassemblyandAssembly,"StickCylinder-Removeand Install".
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i02379126
