EPC Parts Catalogs

303.5D CR, 304D CR, 305D CR and 305.5D CR Mini Hydraulic Excavators Machine Systems Main Hydraulic Pump - Assemble Caterpillar


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  2. Disassembly and Assembly
  3. #82552
Main Hydraulic Pump - Assemble
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303.5D CR, 304D CR, 305D CR and 305.5D CR Mini Hydraulic Excavators Machine Systems [UENR0102]
303.5D CR, 304D CR, 305D CR and 305.5D CR Mini Hydraulic Excavators Machine Systems Main Hydraulic Pump - Remove
303.5D CR, 304D CR, 305D CR and 305.5D CR Mini Hydraulic Excavators Machine Systems Control Manifold (Pilot Oil) - Disassemble - Hydraulic Lockout, Swing Brake and Travel
HYDRAULIC SYSTEM
PUMP GP
303.5D CR, 304D CR, 305D CR and 305.5D CR Mini Hydraulic Excavators Machine Systems Main Hydraulic Pump - Remove
303E CR, 303.5E, 304E, 305.5E and 305E Mini Hydraulic Excavators Machine Systems Main Hydraulic Pump - Disassemble
303.5D CR, 304D CR, 305D CR and 305.5D CR Mini Hydraulic Excavators Machine Systems Main Hydraulic Pump - Assemble
1.1. Assembly Procedure

Assembly Procedure

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Table 1
Required Tools    
Tool     Part Number     Part Description     Qty    
A     1P-0510     Driver Gp     1    
B     1P-1858     Retaining Ring Pliers     1    
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    Illustration 1g01222569

  1. Install bearing (50) .
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    Illustration 2g01222568

  1. Install spool (49) .
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    Illustration 3g01222567

  1. Install retainer (48) .
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    Illustration 4g01222565

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

    Improper assembly of parts that are spring loaded can cause bodily injury.

    To prevent possible injury, follow the established assembly procedure and wear protective equipment.

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  1. Install retainer (44), spring (47), spring (46), and pin (45) .
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    Illustration 5g01222563

  1. Install port plate (42) and shim (43) .
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    Illustration 6g01222560
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    Illustration 7g01222562

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

    Improper assembly of parts that are spring loaded can cause bodily injury.

    To prevent possible injury, follow the established assembly procedure and wear protective equipment.

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  1. Install washer (41), spring (40), and washer (39) into barrel (36) .

  1. Use Tooling (A) and Tooling (B) in order to install retaining ring (38) .
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    Illustration 8g01222491

  1. Install pins (37) .
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    Illustration 9g01222489

  1. Install barrel (36), bearing (35), retainer (34), and pistons (33) .
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    Illustration 10g01222488

  1. Install swashplate (32) and O-ring seal (31) into housing (30) .
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    Illustration 11g01222487

  1. Install gasket (27), shaft (28), and shim (29) .
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    Illustration 12g01222486

  1. Install bearing (26), bearings (24), screws (25), and O-ring seal (23) .
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    Illustration 13g01222484

  1. Install lip seal (22) .

  1. Use Tooling (A) in order to install retaining ring (21) .
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    Illustration 14g01222482

  1. Install cover (20) and bolts (19) .
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    Illustration 15g01222481

  1. Install gears (17) into housing (18) .
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    Illustration 16g01222478

  1. Install O-ring seals (16) .
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    Illustration 17g01222477

  1. Install cover (14) and bolts (15) .
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    Illustration 18g01222474

  1. Install O-ring seals (13) .
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    Illustration 19g01222473

  1. Install gear pump (12) and two bolts (11) .
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    Illustration 20g01222471

  1. Install O-ring seals (10) .
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    Illustration 21g01222469

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

    Improper assembly of parts that are spring loaded can cause bodily injury.

    To prevent possible injury, follow the established assembly procedure and wear protective equipment.

    ----------------------

  1. Install spool (4), retainer (5), retainer (6), spring (7), O-ring seal (9), and plug (8) .
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    Illustration 22g01222466

  1. Install plug (3), valve (2), and bolts (1) .

End By: Install the hydraulic pump. Refer to , "Main Hydraulic Pump - Install".

Information System:

303E CR, 303.5E, 304E, 305.5E and 305E Mini Hydraulic Excavators Machine Systems Main Hydraulic Pump - Disassemble
C9.3 Engines for Caterpillar Built Machines Sensor Supply - Test
S365C and S385C Demolition and Scrap Shears Specifications
303.5D CR, 304D CR, 305D CR and 305.5D CR Mini Hydraulic Excavators Machine Systems Main Hydraulic Pump - Remove
303.5D CR, 304D CR, 305D CR and 305.5D CR Mini Hydraulic Excavators Machine Systems Swing Motor and Swing Drive - Assemble
303.5D CR, 304D CR, 305D CR and 305.5D CR Mini Hydraulic Excavators Machine Systems Swing Motor and Swing Drive - Disassemble
303.5E2, 304E2, 305E2 and 305.5E2 Mini Excavator Machine Systems Track - Remove and Install
303.5E2, 304E2, 305E2 and 305.5E2 Mini Excavator Machine Systems Track Roller - Remove and Install
303.5D CR, 304D CR, 305D CR and 305.5D CR Mini Hydraulic Excavators Machine Systems Heater Core - Remove and Install
303.5D CR, 304D CR, 305D CR and 305.5D CR Mini Hydraulic Excavators Machine Systems Swing Motor and Swing Drive - Install
303.5D CR, 304D CR, 305D CR and 305.5D CR Mini Hydraulic Excavators Machine Systems Swing Motor and Swing Drive - Remove
S365C and S385C Demolition and Scrap Shears Safety Messages
C9.3 Engines for Caterpillar Built Machines Electrical Power Supply - Test
303.5D CR, 304D CR, 305D CR and 305.5D CR Mini Hydraulic Excavators Machine Systems Control Manifold (Pilot Oil) - Disassemble - Hydraulic Lockout, Swing Brake and Travel
303.5D CR, 304D CR, 305D CR and 305.5D CR Mini Hydraulic Excavators Machine Systems Control Manifold (Pilot Oil) - Assemble - Hydraulic Lockout, Swing Brake and Travel
303.5D CR, 304D CR, 305D CR and 305.5D CR Mini Hydraulic Excavators Machine Systems Pilot Valve (Travel) - Remove
303E CR, 303.5E, 304E, 305.5E and 305E Mini Hydraulic Excavators Machine Systems Pilot Valve (Travel) - Install
303.5D CR, 304D CR, 305D CR and 305.5D CR Mini Hydraulic Excavators Machine Systems Main Control Valve - Disassemble
303.5D CR, 304D CR, 305D CR and 305.5D CR Mini Hydraulic Excavators Machine Systems Main Control Valve - Assemble
303.5D CR, 304D CR, 305D CR and 305.5D CR Mini Hydraulic Excavators Machine Systems Hydraulic Track Adjusters - Remove and Install
303.5D CR, 304D CR, 305D CR and 305.5D CR Mini Hydraulic Excavators Machine Systems Pilot Valve (Blade) - Disassemble
303.5D CR, 304D CR, 305D CR and 305.5D CR Mini Hydraulic Excavators Machine Systems Pilot Valve (Blade) - Assemble
Product Link - PL522/523 System Components
Product Link - PL522/523 Configuration