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5D1910 PROTECTION COVER GROUP--Hydraulic Tank Cap 623 WHEEL TRACTOR


HYDRAULIC SYSTEM
TANK GP
LUBRICATION SYSTEM
FILLER GP-ENGINE OIL
COOLING SYSTEM
RADIATOR GP
FRAME AND BODY
DOOR GP
OPERATOR STATION
SEAT GP

WHEEL TRACTOR 623 WHEEL TRACTOR 52U
 623 TRACTOR 52U00001-UP (MACHINE) UEG0618S 623 52U   (1972)

HYDRAULIC SYSTEM

TANK GP
HYDRAULIC TANK AND FILTER GROUP
8D-1610 HYDRAULIC TANK AND FILTER GROUP
HYDRAULIC TANK AND FILTER GROUP
8D-1610 HYDRAULIC TANK AND FILTER GROUP
HYDRAULIC TANK AND FILTER GROUP
8D-1610 HYDRAULIC TANK AND FILTER GROUP
HYDRAULIC TANK AND FILTER GROUP
8D-1610 HYDRAULIC TANK AND FILTER GROUP
INTERNAL FILTER GROUP
8J-3582 INTERNAL FILTER GROUP
INTERNAL FILTER GROUP
8J-3582 INTERNAL FILTER GROUP
INTERNAL FILTER GROUP
8J-3582 INTERNAL FILTER GROUP
HYDRAULIC EXPANSION TANK
8D-1910 HYDRAULIC EXPANSION TANK
COVER GP-PROTECTION
5D-1910 COVER GP-PROTECTION
 

#UEG0618S0360
 

5D-1910: COVER GP-PROTECTION

5D1910 PROTECTION COVER GROUP--Hydraulic Tank Cap
c113719 UEG0618S
5D1910 COVER GP-PROTECTION Parts scheme
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Parts for your 623 WHEEL TRACTOR:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 1L-5072 [1] DOWEL  
2. 9M-7394 [1] LEVER  
3. 5D-1911 [1] COVER  
4. 2J-7761 [1] RING  
5. [1] PADLOCK  
    (For Service of Padlock & Key Order 8S7949 Padlock Group)
  8M-0439 H [2] KEY  
    (NOT SHOWN)
  H   NOT PART OF PROTECTION COVER G
 

#UEG0618S0361
 

2S-3025: COVER GP-PROTECTION

2S3025 PROTECTION COVER GROUP--Oil Filler Cap
c104194 UEG0618S
2S3025 COVER GP-PROTECTION Parts scheme
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Parts for your 623 WHEEL TRACTOR:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
  [ 1] PADLOCK  
    NOTE: FOR SERVICE OF PADLOCK AND KEY ORDER 8S7949 PADLOCK GROUP
  8M-0439 H [ 2] KEY  
    (Not Shown)
    NOT PART OF PROTECTION COVER
 

#UEG0618S0362
 

2S-6096: COVER GP-PROTECTION

2S6096 PROTECTION COVER GROUP--Radiator Cap
c113717 UEG0618S
2S6096 COVER GP-PROTECTION Parts scheme
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Parts for your 623 WHEEL TRACTOR:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. [1] TANG  
2. [1] COVER  
3. [1] RETAINER  
4. [1] RING  
5. [1] CAP  
6. [1] GASKET  
7. [1] RING  
8. [1] PADLOCK GROUP  
  [2] KEY  
 

#UEG0618S0363
 

5D-9440: HOOD SIDE DOOR GROUP

5D9440 HOOD SIDE DOOR GROUP--Right Hand - Type 1
c105183 UEG0618S
5D9440 HOOD SIDE DOOR GROUP Parts scheme
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Parts for your 623 WHEEL TRACTOR:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 5D-9411 [1] DOOR ASSEM.  
2. 6F-7013 [1] HANDLE  
3. 4B-4312 [2] RIVET  
4. 2D-2946 [2] HINGE  
    (Parts of 5D9411 Door Assem.)
5. 5D-9412 [1] DOOR ASSEM.  
6. 6F-7013 [1] HANDLE  
7. 0T-0537 [1] FASTENER ASSEM.  
8. 4B-4312 [5] RIVET  
    (Parts of 5D9412 Door Assem.)
9. 6D-0581 [1] BRACKET  
10. 0L-1351 [3] BOLT  
11. 1D-4717 [3] NUT  
12. 3B-4506 [3] LOCKWASHER  
13. 5D-9409 [1] SUPPORT ASSEM.  
 

#UEG0618S0364
 

5D-9440: HOOD SIDE DOOR GROUP

5D9440 HOOD SIDE DOOR GROUP--Right Hand--Type 2
c149399 UEG0618S
5D9440 HOOD SIDE DOOR GROUP Parts scheme
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Parts for your 623 WHEEL TRACTOR:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 5D-9411 [1] DOOR ASSEM.  
    (Includes)
2. 6F-7013 [1] HANDLE  
3. 4B-4312 [2] RIVET  
4. 2D-2946 [2] HINGE  
5. 5D-9412 [1] DOOR ASSEM.  
    (Includes)
6. 6F-7013 [1] HANDLE  
7. 0T-0537 [1] FASTENER ASSEM.  
8. 4B-4312 [9] RIVET  
9. 9D-7117 C [1] DOOR ASSEM.  
    (Includes)
10. 5B-0866 C [1] HINGE  
11. 4D-6082 [1] BOLT  
  4B-4280 C [1] WASHER  
  3B-4610 [1] COTTER PIN  
12. 4D-9347 C [1] FLANGE ASSEM.  
    (Includes)
  1F-0748 [1] NUT (weld)  
13. 6D-0581 [1] BRACKET  
14. 0L-1351 [3] BOLT  
15. 1D-4717 [3] NUT  
16. 3B-4506 [3] LOCKWASHER  
17. 5D-9409 [1] SUPPORT ASSEM.  
  C   INDICATES CHANGE
 

#UEG0618S0365
 

8D-8930: SEAT GROUP

8D8930 SEAT GROUP
Serial No. 52U310-Up
8D8920 Seat parts are shown on Page 172B
c167918 UEG0618S
8D8930 SEAT GROUP Parts scheme
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Parts for your 623 WHEEL TRACTOR:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 0S-1566 C [4] BOLT  
2. 3B-4510 [8] LOCKWASHER  
3. 8D-8584 [1] GRAB IRON  
4. 1B-4367 [1] BOLT 76.20 mm(3 in.) long  
  1D-4586 [3] BOLT 88.90 mm(3.50 in.) long  
  4D-3704 [4] WASHER  
5. 8D-6144 [2] BLOCK  
6. 5H-4778 [2] UNION  
7. 8D-6899 C [1] SEAT BELT GROUP  
    (Includes)
  2G-6654 SEAT BELT GROUP  
    (No Serviceable Parts)
  2G-6653 [1] SEAT BELT GROUP  
    (Includes)
  2G-6651 [1] PIN  
  9M-7611 [1] RING  
8. 8D-8920 Y [1] SEAT GROUP  
    (Separate Illustration)
9. 8S-4723 [2] BOLT  
10. 5B-3254 [3] NUT  
11. 1B-4204 [2] NUT  
  3B-4507 [2] LOCKWASHER  
12. 3L-6521 [1] TEE  
13. 4H-6147 [1] UNION  
14. 3D-6388 [1] HOSE ASSEM. 111.76 cm(44 in.)  
15. 0T-0102 [10] BOLT  
16. 3D-8884 [1] ELBOW  
17. 2H-3855 [4] BOLT  
  1D-4719 [4] NUT  
  3B-4508 [4] LOCKWASHER  
18. 4S-7560 [1] HOSE ASSEM. 55.88 cm(22 in.)  
19. 3B-4607 [1] COTTER PIN  
20. 9D-1224 C [1] BELT  
21. 8S-0933 [1] EYEBOLT  
22. 1S-8412 [1] PLATE  
  4B-4158 [4] SCREW  
  C   INDICATES CHANGE
  Y   SEPARATE ILLUSTRATION
 

#UEG0618S0366
 

8D-8920: SEAT GP

8D8920 SEAT GROUP - Type 1
Serial No. 52U310-Up
Part of 8D8930 Seat Group shown on Page 172A
c116955 UEG0618S
8D8920 SEAT GP Parts scheme
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Parts for your 623 WHEEL TRACTOR:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 9D-2628 [1] PUMP  
2. 9D-2631 [1] CUSHION ASSEM.  
  9D-2629 [2] BUMPER  
  4B-1256 [2] SCREW  
3. 9D-2626 [1] CUSHION  
4. 9D-2633 [1] PANEL ASSEM.  
5. 9D-2634 [1] VALVE  
6. 9D-2627 [1] VALVE & ROCKER ASSEM.  
7. 9D-2632 [1] ACCUMULATOR  
    THE FOLLOWING REPAIR KITS ARE AVAILABLE:
  9D-2636 [1] KIT (Hose)  
    (Consists of Hose Assems.)
  9D-2637 [1] KIT (Spring)  
    (Consists of Springs)
  9D-2638 [1] KIT (Bearing)  
    (Consists of Bearings)
  9D-2639 [1] KIT (Seat Cylinder)  
    (Consists of Cylinder, Washers, Nuts and Dust Cover)
 

#UEG0618S0367
 

8D-8920: SEAT GP

8D8920 SEAT GROUP--Type 2
Serial No. 52U310-Up
Part of 8D8930 Seat Group shown on Page 172A
c206907 UEG0618S
8D8920 SEAT GP Parts scheme
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Parts for your 623 WHEEL TRACTOR:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 9D-9148 C [1] VALVE ASSEM. (relief)  
    (Includes)
  3J-7354 [1] "O" RING  
2. 9D-2631 [1] CUSHION ASSEM.  
    (Includes)
  9D-2629 [2] BUMPER  
  4B-1256 [2] SCREW  
3. 9D-2626 [1] CUSHION  
4. 9D-2633 [1] PANEL ASSEM.  
    (Includes)
5. 9D-2634 [1] VALVE  
6. 9D-2627 [1] VALVE & ROCKER ASSEM.  
7. 9D-2632 [1] ACCUMULATOR  
8. 2G-1884 C [1] BRACKET  
9. 2R-0364 C [4] RING  
    THE FOLLOWING REPAIR KITS ARE AVAILABLE:
  9D-2636 [1] KIT (hose)  
    (Includes Hose Assem.)
  9D-2637 [1] KIT (spring)  
    (Includes Springs)
  9D-2638 [1] KIT (bearing)  
    (Includes Bearings)
  2G-3783 C [1] KIT (cylinder seat)  
    (Includes Cylinder Assem., Washer, Nuts and Dust Cover)
  2G-1005 C [1] KIT (seal)  
    (Includes 2 seals)
  9D-9147 C [1] KIT (air pump)  
    (Includes Vent Assem., Rings, Screen, "U" Cup, Spring, & Balls)
  C   INDICATES CHANGE
 

#UEG0618S0368
 

2G-0600: POWER SOURCE SEAT CONVERSION GROUP

2G600 POWER SOURCE SEAT CONVERSION GROUP
Serial No. 52U310 to 425, 427 to 495 and 52U497-Up
For Field Replacement of 9D2628 Pump shown on Page 172B
UEG0618S0368 UEG0618S
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Parts for your 623 WHEEL TRACTOR:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
  9J-6514 Y [1] VALVE ASSEMBLY  
    MOUNT IN CONVENIENT LOCATION ON TOP OF DIFFERENTIAL CASE BENEATH HITCH AND TO THE RIGHT OF THE MACHINE CENTERLINE IN SUCH A MANNER THAT HOSE ASSEMBLY 5D1258 WILL REACH THE HYDRAULIC TANK AND ASSUMULATOR LINE
  3B-4505 [2] LOCKWASHER -- TO BOLT  
  3B-6553 [1] ELBOW -- TO ADAPTER USE AS REQUIRED  
  4B-4277 [2] WASHER -- TO BOLT  
  1D-4538 [2] BOLT -- TO VALVE  
  1D-4707 [4] BOLT -- ADAPTER TO ACCUMULATOR USE AS REQUIRED  
  1D-4716 [2] NUT --TO BOLT  
  4D-6880 [1] HOSE ASSEMBLY -- TO TEE IN RETURN PORT OF PRESSURE REDUCING VALVE  
  4D-6880 [1] HOSE ASSEMBLY -- TO CONNECTOR  
  5D-1258 [1] HOSE ASSEMBLY -- TO 5H4778 UNION  
  5D-7377 [1] FITTING -- TO HOSE ASSEMBLY TO REG. PORT ON 9J6514 VALVE ASSEMBLY  
  5D-7377 [1] FITTING -- TO PRESSURE PORT ON 9J6514 VALVE ASSEMBLY  
  5D-9522 [1] FITTING -- TO HOSE ASSEMBLY  
  6D-6001 [1] HOSE ASSEMBLY -- TO FITTING (IF HOSE IS TOO LONG FOR PARTICULAR installation coil excess and retain away from moving parts)  
  7F-8698 [4] BOLT -- ADAPTER TO CHARGING VALVE-- USE AS REQUIRED  
  2H-9233 [2] SPACER -- USE AS REQUIRED  
  4H-6147 [1] UNION -- TO TEE  
  5H-4778 [1] UNION --TO TEE  
  2J-5907 [4] BOLT -- ADAPTER TO ACCUMULATOR-- USE AS REQUIRED  
  3J-1907 [1] SEAL -- TO ADAPTER  
  3J-7354 [1] SEAL -- TO ADAPTER 5P2937  
  6J-0211 [1] ADAPTER -- TO FITTING TO ACCUMULATOR LINE  
  6J-3625 [1] SEAL -- TO ADAPTER  
  4K-8154 [1] PLATE -- TO VALVE-- TO DIFFERENTIAL CASE  
  3L-6521 [1] TEE -- TO ADAPTER OR ELBOW  
  5P-2937 [1] ADAPTER --TO TEE TO RETURN PORT ON PRESSURE REDUCING VALVE  
  5P-3501 [1] ADAPTER -- TO TANK  
  3S-6115 [1] TEE -- TO HOSE ASSEMBLY  
  9S-1366 [2] BOLT -- USE AS REQUIRED  
  061-7921 [1] CONNECTOR -- HOSE ASSEMBLY TO RETURN LINE ON BOSTROM SEAT  
  061-7921 [1] CONNECTOR -- TO PRESSURE LINE ON BOSTROM SEAT  
  Y   SEPARATE ILLUSTRATION
 

#UEG0618S0369
 

9J-6514: PRESSURE REDUCING VALVE ASSEMBLY

9J6514 PRESSURE REDUCING VALVE ASSEMBLY
Serial NO. 52U310 to 425, 427 to 495 and 52U497-Up. Part of 2G600
Power Source Seat Conversion Group listed on Page 172D
c156717 UEG0618S
9J6514 PRESSURE REDUCING VALVE ASSEMBLY Parts scheme
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Parts for your 623 WHEEL TRACTOR:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 3G-0670 [1] SPRING  
2. 3G-0671 [1] END  
3. 5B-9318 [1] BALL  
4. 3G-0669 [1] SPRING  
5. 3G-0672 [1] END  
6. 3D-4245 [1] SEAL  
7. 2D-6642 [1] BALL  
8. 5L-5840 [1] WASHER  
9. 1B-4203 [1] NUT  
10. 5P-5477 [1] SCREW  
 

Information:

Tool Operating Manual
204-7392 (Air Motor Driven) Filter Cart {0645, 0680, 0738, 5056, 5068}
204-7392 (Air Motor Driven) Filter Cart {0645, 0680, 0738, 5056, 5068}
Procedures for Using 9U-5971 and 173-9842 Filter Cart Group {0599, 0738, 5050, 5056, 5057, 5068, 5095, 7579}
Procedures for Using 9U-5971 and 173-9842 Filter Cart Group {0599, 0738, 5050, 5056, 5057, 5068, 5095, 7579}
Procedures For Using: 127-8781 Transfer Filter Cart , old 9U-7361 (110V, 60 hz), 169-7159 Transfer Filter Cart , old 127-8782 (220V, 50 hz) CE, 174-9158 Transfer Filter Cart , old 129-0849 (Air Motor Driven){0374, 0599, 0680, 0738}
Procedures For Using: 127-8781 Transfer Filter Cart , old 9U-7361 (110V, 60 hz), 169-7159 Transfer Filter Cart , old 127-8782 (220V, 50 hz) CE, 174-9158 Transfer Filter Cart , old 129-0849 (Air Motor Driven){0374, 0599, 0680, 0738}
Procedure for Using 173-8839 Fluid Storage Filter Cart {0113, 0374, 0599, 0680, 0738, 7579}
Procedure for Using 173-8839 Fluid Storage Filter Cart {0113, 0374, 0599, 0680, 0738, 7579}
188-3242 Filter Cart Group and 227-2479 Filter Cart Group{0374, 0599, 0680, 0738, 0768, 5050, 5056, 5095}
188-3242 Filter Cart Group and 227-2479 Filter Cart Group{0374, 0599, 0680, 0738, 0768, 5050, 5056, 5095}
Reuse And Salvage Guidelines
Filtration Times for Caterpillar Machine Fluid Compartments{0680, 0738, 0768, 3080, 5050, 5056, 5095}
Filtration Times for Caterpillar Machine Fluid Compartments{0680, 0738, 0768, 3080, 5050, 5056, 5095}
Contamination Control Guidelines
Procedure for Filtering <NOBR> 9U-5000</NOBR> Hydraulic Test Bench Hydraulic Oil {0680, 0738, 0768, 0784, 5050, 5056}
Procedure for Filtering 9U-5000 Hydraulic Test Bench Hydraulic Oil {0680, 0738, 0768, 0784, 5050, 5056}
Filtration Procedure for Excavator Hydraulic Oil {0680, 0768, 5050, 5056}
Filtration Procedure for Excavator Hydraulic Oil {0680, 0768, 5050, 5056}
Proper Oil Changing Procedures {1000, 1308, 1316, 1325, 1348, 3000, 3004, 3005, 3030, 3064, 3067, 3080, 3081, 4000, 4001, 4050, 4051, 5050, 5056, 5068, 5095}
Proper Oil Changing Procedures {1000, 1308, 1316, 1325, 1348, 3000, 3004, 3005, 3030, 3064, 3067, 3080, 3081, 4000, 4001, 4050, 4051, 5050, 5056, 5068, 5095}
Obtaining Oil Sample for Analysis {1302, 1348, 3030, 3080, 3278, 4011, 4070, 5050, 5056, 5095, 7542}
Obtaining Oil Sample for Analysis {1302, 1348, 3030, 3080, 3278, 4011, 4070, 5050, 5056, 5095, 7542}
Filtration Procedure for Wheel Tractor-Scraper Hydraulic Oil {0680, 0768, 5050, 5056}
Filtration Procedure for Wheel Tractor-Scraper Hydraulic Oil {0680, 0768, 5050, 5056}
Filtration Times for Caterpillar Machine Fluid Compartments{0680, 0738, 0768, 3080, 5050, 5056, 5095}
Filtration Times for Caterpillar Machine Fluid Compartments{0680, 0738, 0768, 3080, 5050, 5056, 5095}
Basic Principles of Kidney Loop Filtering Hydraulic Fluid Systems {0680, 0768, 5050, 5056}
Basic Principles of Kidney Loop Filtering Hydraulic Fluid Systems {0680, 0768, 5050, 5056}
Bench Test Procedures
Filtration Procedure for Wheel Tractor-Scraper Hydraulic Oil {0680, 0768, 5050, 5056}
Filtration Procedure for Wheel Tractor-Scraper Hydraulic Oil {0680, 0768, 5050, 5056}
Service Magazine
Single Element and Multiple Element Filter Heads are Available for Customized Systems {0738}
2004/03/29
A New Strainer Assembly For the Hydraulic Tank Is Now Available {5056, 5068}
2013/09/02
Welding On Fuel And Hydraulic Tanks {0353, 0679, 1273, 5056, 7000}
2005/12/19
Proper Identification of Ports on 5P-0306 Vacuum Transducer {0768, 5050, 5056}
2006/01/23
Spanner Wrench is Available for Ecology Drain Valves {1302, 1353, 1372, 5076, 5613}
2006/03/20

Caterpillar Parts SIS Catalog 623 :

PROTECTION COVER GROUP
5D-1920 PROTECTION COVER GROUP
FAST FILL FUEL ADAPTER GROUP
7D-4690 FAST FILL FUEL ADAPTER GROUP
FAST FILL FUEL ADAPTER GROUP
7D-6000 FAST FILL FUEL ADAPTER GROUP
ADAPTER GP-FAST FILL FUEL
2G-9000 ADAPTER GP-FAST FILL FUEL
FAST FILL FUEL ADAPTER GROUP
7D-6000 FAST FILL FUEL ADAPTER GROUP
COVER-DUST
9D-0630 COVER-DUST
FAST FILL FUEL ADAPTER GROUP
7D-6000 FAST FILL FUEL ADAPTER GROUP
GUARD GP-VANDALISM
8D-8145 GUARD GP-VANDALISM
COVER GP-PROTECTION
2S-3025 COVER GP-PROTECTION
COVER GP-PROTECTION
2S-6096 COVER GP-PROTECTION
HOOD SIDE DOOR GROUP
5D-9440 HOOD SIDE DOOR GROUP
HOOD SIDE DOOR GROUP
5D-9440 HOOD SIDE DOOR GROUP
SEAT GROUP
8D-8930 SEAT GROUP
SEAT GP
8D-8920 SEAT GP
SEAT GP
8D-8920 SEAT GP
2G-0600 POWER SOURCE SEAT CONVERSION GROUP

Truck sale:

Caterpillar 623K, Road Scraper, Construction
775,000 
Caterpillar 623K, Road Scraper, Construction
- Road Scraper
HOLT OF CALIFORNIA
Caterpillar 623K, Road Scraper, Construction
930,000 
Caterpillar 623K, Road Scraper, Construction
- Road Scraper
ALTORFER INDUSTRIES
Caterpillar 623K, Road Scraper, Construction
855,000 
Caterpillar 623K, Road Scraper, Construction
- Road Scraper
HOLT OF CALIFORNIA
Caterpillar 623K, Road Scraper, Construction
845,000 
Caterpillar 623K, Road Scraper, Construction
- Road Scraper
HOLT OF CALIFORNIA
Caterpillar 623K, Road Scraper, Construction
485,000 
Caterpillar 623K, Road Scraper, Construction
- Road Scraper
WAGNER EQUIPMENT CO
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