312C Excavator Machine Systems Accumulator - Remove and Install Caterpillar


Accumulator - Remove and Install
`
312C Excavator Machine Systems [RENR7476]
BRAKING SYSTEM
ACCUMULATOR GP
312C Excavator Machine Systems Accumulator - Remove and Install
1.1. Removal Procedure
2.1. Installation Procedure

Removal Procedure

Start By:

  1. Release the hydraulic system pressure. Refer to Disassembly and Assembly, "Hydraulic System Pressure - Release".

Note: Inspect the O-ring seal for wear or for damage. If necessary, replace the O-ring seal.


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, "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.



NOTICE

Keep all parts clean from contaminants.

Contaminants may cause rapid wear and shortened component life.


------ WARNING! ------

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.




    Illustration 1g00822682

  1. Open the right, rear door for access to accumulator (1). The accumulator is located below the main hydraulic pump.


    Illustration 2g00822692

  2. Turn nut (2) which is located at the bottom of accumulator (1) in order to remove accumulator (1).

  3. Remove the O-ring seal from accumulator (1).

Installation Procedure

Table 1
Required Tools 
Tool  Part Number  Part Description  Qty 
7S-5437  Nitrogen Charging Group 

  1. Install the O-ring seal on the accumulator.


    Illustration 3g00822692

  2. Install accumulator (1) and tighten nut (2) in order to secure accumulator (1) on the machine.

  3. Attach Tooling (A) to the nitrogen container. Attach Tooling (A) to the accumulator.

  4. Charge accumulator (1) to 1760 ± 100 kPa (255 ± 14 psi).

  5. Remove Tooling (A).

  6. Check the hydraulic oil level. Refer to Operation and Maintenance, "Hydraulic System Oil Level - Check". Refer to Operation and Maintenance, "Lubricant Viscosities and Refill Capacities".

Information System:

854G and 854K Wheel Dozers and 992G, 992K and 994F Wheel Loaders VIMSTM Attachment Code - Configure
5230B Excavator Vital Information Management System (VIMS) Service Operations
5230B Excavator Vital Information Management System (VIMS) Normal Operation
5230B Excavator Vital Information Management System (VIMS) General Information
C-9 Engine for Caterpillar Built Machines Engine Pressure Sensor Open or Short Circuit - Test
303.5E2, 304E2, 305.5E2 and 305E2 Mini Hydraulic Excavators Shipping the Machine
M316C, M318C and M322C Excavators and M318C and M322C Material Handlers Lifting and Tying Down the Machine
312C Excavator Machine Systems Shuttle Valve - Install - Auxiliary Control
325C Excavator Machine System Specifications Final Drive
3176C and 3196 Engines for Caterpillar Built Machines Rear Power Take-Off (RPTO) - Assemble
312C Excavator Machine Systems Shuttle Valve - Remove - Auxiliary Control
325C Excavator Machine System Specifications Bucket Cylinder
C-9 Engine for TK711, TK721, TK722, TK732, TK741, TK751, and TK752 Track Feller Bunchers Engine Temperature Sensor Open or Short Circuit - Test
325D and 329D Excavators and 325D Material Handler Machine System Specifications Fasteners - Swing Drive and Final Drive
Procedure to Reinforce the Frame Assembly Stabilizer{7222}
312C Excavator Machine Systems Fuel Tank - Remove
M316C, M318C and M322C Excavators and M318C and M322C Material Handlers Swing Lock Pin Control
HDB Series and M1 Series Heavy Duty Brushless Alternators Alternator - Assemble - HDB Series Alternator
312C Excavator Machine Systems Fuel Tank - Install
305 CR Mini Hydraulic Excavator Access Door and Cover Locations
312C Excavator Machine Systems Tank and Filter (Hydraulic) - Remove
HDB Series and M1 Series Heavy Duty Brushless Alternators Alternator - Disassemble - HDB Series Alternator
305 CR Mini Hydraulic Excavator Capacities (Refill)
330B Excavator Machine System Specifications Track Carrier Roller