PLATE AS 1459447 - Caterpillar

Illustration 2 g03199417
Table 2
Specification for 087-4456 Hydraulic Accumulator Gp    
Item     Qty     Part     Specification Description    
1     1     -     Tighten the cap to
2.9 0.2 N m (26 1.7 lb in).    
2     1     -     Final installation torque is
30 5 N m (266 44 lb in).    
-     -     -     Charge pressure of nitrogen gas should be within
1760 100 kPa (255 15 psi).    
Illustration 3 g02847196
Table 3
Specifications for 335-0517 Hydraulic Accumulator Gp    
Item     Qty     Part     Specification Description    
-     -     -     Charging medium is dry nitrogen.    
-     -     -     Service pressure is
3430 kPa (500 psi).    
-     -     -     Bursting pressure is
13700 kPa (1990 psi).    
-     -     -     Working temperature range is
−30 to 93 °C (−22 to 199 °F).    
-     -     -     Internal volume of compartment for gas is
320.0 cc (19.5 in3).    
-     -     -     Precharge pressure at
20 °C (68 °F)is
1800 100 kPa (261 15 psi).    
-     -     -     Maximum allowable working pressure is
8000 kPa (1160 psi).    Removal Procedure
Start By:
Release the hydraulic system pressure.
At operating temperature, the hydraulic oil is hot and under pressure. Hot oils can cause burns.To prevent possible personal injury, release the pressure in the work tool hydraulic circuit (boom, stick, bucket, and swing), travel circuits, and the hydraulic oil tank at the filler cap before any hydraulic lines or components are disconnected or removed.Remove the filler cap only when the engine is stopped and the filler cap is cool enough to touch.
Illustration 4 g03223879
Open hood (1) and remove guard assembly (2) .
Illustration 5 g03223880
Remove sheet assembly (3) in order to gain access to accumulator (4) .
Illustration 6 g03223896
Note: Do not release the nitrogen from the hydraulic accumulator unless the unit will be disassembled.
Remove accumulator (4) .Installation Procedure
Install accumulator (4) in reverse order of removal.