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Model 70523

This list of product numbers is to aid in Item identification.
If your product number is not listed contact your Eaton representitive.

Model 70523, Lefthand Rotation (CCW)

Description of Part Number

Product

Drive Shaft

Backplate Assy.

Housing Assy.

Compensator Assy.

Number

Item #1

Item #2

Item #3

Item #4

70523-LAA

70502-200

70523-301

70500-303

70523-FJ-03

70523-LAB

70502-200

70523-301

70500-303

70523-FH-02

70523-LBF

70502-202

70523-301

70500-303

70523-FH-02

70523-LBG

70502-202

70523-301

70500-303

70523-FJ-03

70553-LAB

70552-200

70553-305

70500-303

70523-FH-02

70553-LAK

70552-209

70553-305

70500-303

70523-FH-02

70553-LAR

70552-203

70553-305

70500-303

70523-FH-02

Model 70523, Righthand Rotation (CW)

Description of Part Number

Product

Drive Shaft

Backplate Assy.

Housing Assy.

Compensator Assy.

Number

Item #1

Item #2

Item #3

Item #4

70523-RAA

70502-200

70523-305

70500-303

70523-FJ-03

70523-RAB

70502-200

70523-305

70500-303

70523-FG-01

70523-RBE

70502-202

70523-305

70500-303

70523-FJ-03

70553-RAB

70552-200

70553-303

70500-303

70523-FG-01

70553-RAK

70552-209

70553-303

70500-303

70523-FG-01

Product Number

All left (CCW) or right (CW) directions
given are viewed from the input shaft end of the pump.

Содержание 70523

Страница 1: ...Parts and Repair Information Eaton Medium Duty Piston Pump Model 70523 or 70553 0 69 cm3 r 0 4 21 in3 r Displacement Pressure or Pressure Flow Compensated Piston Pumps No 6 617 January 1998 ...

Страница 2: ...en The following recommendations should be followed to insure successful repairs Remove the pump from the application Cleanliness is extremely important Clean the port areas thoroughly before disconnecting the hydraulic lines Plug the pump ports and cover the open hydraulic lines immediately after they re disconnected Drain the oil and clean the exterior of the pump before making repairs Wash all ...

Страница 3: ...tc B C Year Manufactured 1 for 1991 etc Change Code Serial Number Code prior to Jan 1992 1 B 52 JB Testers Initials Week of Year Identification and Tools Required 3 8 Inch Socket 9 16 Inch End Wrench 1 1 2 Inch End Wrench 11 16 Inch End Wrench Rachet Wrench Torque Wrench 100 lb ft 3 16 Inch Hex Key Allen 3 16 Inch Hex Key Allen Socket Soft Face Hammer Internal Retaining Pliers Straight 070 Tip Ext...

Страница 4: ...ation pump All left CCW or right CW directions given are viewed from the input shaft end of the pump 35 34 32 33 19 4 27 29 5 7 26 3 1 12 21 12 10 Cover only 20 11 14 8 15 24 23 13 18 17 9 1 21 22 6 25 16 Serial code and assembly number location 3 12 13 16 19 20 27 28 30 29 30 2 ...

Страница 5: ...500 604 1 Gasket 23 70523 400 1 Spring Collar 24 70523 610 1 Gasket 25 16232 22 1 Shaft Seal 25 16233 22 1 Shaft Seal Drive fluorocarbon rubber 26 16003 408 90 1 O ring 2 38 mm Dia x 9 525 mm ID 0937 in Dia x 375 in ID 27 16004 3 2 O ring 3 175 mm Dia x 47 625 mm ID 125 in Dia x 1 875 in ID 27 16004 403 2 O ring 3 175 mm Dia x 47 625 mm ID 125 in Dia x 1 875 in ID fluorocarbon 28 16246 612 1 Key U...

Страница 6: ...ut Drive Output Drive 70552 200 14 Tooth 70502 200 14 Tooth 70502 202 31 8 1 25 Dia Keyed 9 Tooth External 13 Tooth External 9 Tooth External 70552 203 14 Tooth 70552 209 31 8 1 25 Dia Keyed Used with 2 bolt A Flange backplate Used with 2 bolt B Flange backplate Used with 2 bolt A Flange backplate ...

Страница 7: ...ompensator Backplate Assembly 2 c 70553 305 70553 303 1 Auxiliary 2 Bolt A Flange Series 82 2 Opposite Side Porting Backplate 2 1 16237 11816 1 Bearing 2 2 70523 614 1 Guide Pin All left CCW or right CW directions given are viewed from the input shaft end of the pump Lefthand Rotation CCW Righthand Rotation CW Righthand Rotation CW 2 a Top Mounted Compensator 2 b Rear Mounted Compensator 2 c Top M...

Страница 8: ... 4 17 4 18 4 19 4 20 4 21 4 11 4 22 4 22 1 Lefthand CCW Pump Rotation Righthand CW Pump Rotation For Both Pump Rotations Pressure Flow Compensator Pressure Compensator 4 a 70523 FW 4 b 70523 FU 4 c 70523 FT 4 11 Cover not included with non set compensator assy 4 11 Cover 4 11 Cover 4 11 Cover non set non set non set ...

Страница 9: ...w 4 21 16024 5 1 Nut 4 22 16103 104 2 Plug Assembly 4 22 1 16133 4 2 O ring 1 83 mm Dia x 8 92 mm I D 072 in Dia x 351 in I D Legend Included in seal repair kit listed on page 5 NSS Not Sold Separately Covers are not included with Non Set Compensator Pre set Pressure Flow Compensator Assemblies Non Set Pre set Assembly Assembly Pump Rotation Pressure Setting Flow Setting 70523 FU 70523 DS 01 Right...

Страница 10: ...r 5 3 NSS 1 Spider Pivot 5 4 NSS 1 Retainer 5 5 NSS 1 Piston Block 5 6 NSS 3 Pins 5 7 NSS 1 Washer 5 8 NSS 1 Spring 5 9 NSS 1 Retaining Ring NSS Not Sold Separately Item 3 Housing Identification Item Part No Port Machined 3 70500 303 B 70500 311 A 70500 332 A B B Drain Port 875 14 SAE Straight Thd A Drain Port 875 14 SAE Straight Thd Rightside CW Leftside CCW Top of Pump 5 1 5 2 5 3 5 5 5 4 5 6 5 ...

Страница 11: ... Plates For A SAE Flanges Item Part No Qty Description K3 70142 915 1 Cover Plate Kit for A SAE flange K3 1 16007 14 1 O ring 1 59 mm Dia x 82 55 mm ID 0625 in Dia x 3 25 in ID K3 2 70142 600 1 Cover Plate K3 3 16032 610 2 Cap Screws For B SAE Flanges Not Pictured Item Part No Qty Description K6 990596 000 1 Cover Plate Kit for B SAE flange K6 1 102919 000 1 Gasket K6 2 250073 000 1 Cover Plate K6...

Страница 12: ...00 303 70523 FJ 03 70553 LAB 70552 200 70553 305 70500 303 70523 FH 02 70553 LAK 70552 209 70553 305 70500 303 70523 FH 02 70553 LAR 70552 203 70553 305 70500 303 70523 FH 02 Model 70523 Righthand Rotation CW Description of Part Number Product Drive Shaft Backplate Assy Housing Assy Compensator Assy Number Item 1 Item 2 Item 3 Item 4 70523 RAA 70502 200 70523 305 70500 303 70523 FJ 03 70523 RAB 70...

Страница 13: ...ing the spring The following parts will be needed to disassemble the piston block 2 ea 1 2 l D x 1 3 8 O D flat washer 1 ea 5 8 x 1 3 4 flat washer and 1 ea 1 2 x 4 1 2 in N C cap screw 1 ea 1 2 N C nut Place one of the flat washers over the 1 2 x 4 1 2 in cap screw and place this through the center of the piston block Place the 5 8 washer over the cap screw and let it rest on the three pins Place...

Страница 14: ...ld not show wear or deep scratches The shoes should be a snug fit on the ball end of the piston The flat surface of the shoes should be flat and smooth Do not lap piston shoes 5 Examine the spider 5 2 It should be flat no cracks and no signs of wear in the pivot area 6 Examine the pivot 5 3 It should be smooth and show no signs of wear 7 Inspect the camplate 6 for the condition of finish of the po...

Страница 15: ...se with the open end of the housing 3 up 11 Install new gasket 22 12 Install control piston 7 and plug 2 2 with new o ring onto backplate Note roll pin 3 2 locations 13 Install backplate 2 and retain with cap screws 29 and 30 Torque to 47 to 54 N m 35 to 40 lb ft 14 Place new o ring 4 22 1 on plug 4 22 Install plug assembly flow compensator spool 4 12 spring pivot 4 13 spring 4 14 spring pivot 4 1...

Страница 16: ...ows oil to flow through the sensor line thus removing any air in the sensor line Reconnect the sensor line after a steady flow of oil is coming from the line 5 Replace the coil wire or return the fuel flow to the injectors and start the engine Run at low idle speed for one minute The pump should immediately pick up oil and go into low pressure standby If there is no indication of fill in 30 second...

Страница 17: ...e action steps shown in the diagrams Where applicable the comment number of the statement appears in the action block of the diagrams Recommended Gauge Locations Load Sensing Port Tee in Line to Check Load Sensing Pressure Install an in line Test Port for System Pressure and Inlet Vacuum Drain Port Tee in Line to Check Case Pressure Gauges Recommended Inlet vacuum gauge 2 bar to 1 bar 30 PSI to 30...

Страница 18: ...nstall Proper Fluid Replace Pump Inspect Inlet Screen or Strainer Clogged Clean or Replace Below Level Fill to Proper Level 4 Inspect Compensator Signal Low Inspect Signal Line Defective Repair or Replace 5 Inspect Pump Compensator Defective Repair or Replace OK OK Symptom System will not Develop Proper Pressure or Flow ...

Страница 19: ...per type fluid 3 Inspect Inlet Screen or Strainer for A Suction screen or strainer plugged B Suction line to small or too long C Suction line collapsed or plugged 4 Inspect Compensator Signal for A Improper size or length of signal line B Damaged or obstructed signal line 5 Inspect Pump Compensator for A Misadjusted pressure or flow setting B Pressure or flow spool stuck open C Pressure or flow sp...

Страница 20: ......

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Содержание 70523

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Eaton 70523, Информация о запчастях и ремонте

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