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Volvo EXC210B LC Service Information

Volvo EXC210B LC Service Information

Track motor relief valve, replacing

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Document Title:
Track motor relief valve,
replacing
Profile:
EXC, EC210B LC [GB]
Track motor relief valve, replacing
Op nbr 441-112
1. Park the machine in the service position F, see
2. When the engine is running, the hydraulic line is under high pressure. Stop the engine, and remove the residual
pressure inside the hydraulic line by the travel control lever smoothly for 3 ~ 4 times with ignition switch at "ON"
position.
NOTE!
Remove the residual pressure inside the hydraulic tank by pressing the air breather on the hydraulic tank.
3. Remove screws (1) and motor cover (2).
Figure 1
Removal, motor cover
4. Remove track motor relief valve (1).
Figure 2
Removal, relief valve
5. Install a new relief valve.
6. Check relief valve pressure of the track motor, and adjust if necessary
Function Group:
091 Service positions
Information Type:
Service Information
.
Service Information
Date:
2014/6/12

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Николай
June 23, 2025

какое давление в гидроаккумуляторе экскаватора volvo ec210blc

Summary of Contents for Volvo EXC210B LC

  • Page 1 Service Information Document Title: Function Group: Information Type: Date: Track motor relief valve, Service Information 2014/6/12 replacing Profile: EXC, EC210B LC [GB] Track motor relief valve, replacing Op nbr 441-112 091 Service positions 1. Park the machine in the service position F, see 2.
  • Page 2: Service Information

    Service Information Document Title: Function Group: Information Type: Date: Track motor, disassembly Service Information 2014/6/12 Profile: EXC, EC210B LC [GB] Track motor, disassembly Op nbr Precautions  Thoroughly clean the gearbox assembly prior to disassembly.  Select a clean work area. ...
  • Page 3 Figure 2 Relief valve, removal 3. Remove screws (243). Figure 3 Screws, removal 4. Remove rear flange (201) from spindle (302). NOTE! Take care not to remove shaft (2).
  • Page 4: Brake Valve

    Figure 4 Rear flange, removal 5. Gearbox/hydraulic motor shaft and oil seal.  Remove valve plate (9), parallel pin (241), brake springs (13) and bearing (50) from rear flange (201) and hydraulic motor.  Remove O-rings (329) from spindle (302). NOTE! Do not reuse O-rings (329) after removal.
  • Page 5 Figure 6 Counterbalance spool, removal  Remove springs (228), the stoppers (225), and counterbalance spool (223) from rear flange (201). NOTE! Be careful not to damage the outer surface of counterbalance spool (223) and the sliding surface of rear flange (201). Since rear flange (201) and counterbalance spool (223) are of the selective-fitting type, replace them together as a kit even if only one of the two parts is damaged.
  • Page 6 Figure 9 Check valve, removal NOTE! Be careful not to damage the seat sections of check valve (227) or rear flange (201).  Remove O-ring (237) from plug (226). NOTE! Do not reuse O-ring (237) after removal. 8. Two-speed valve removal. ...
  • Page 7 Plug, removal  Remove plug (280) from flange (201). Figure 13 Piston, removal  Remove O-ring (296) from plug (280).  Remove piston (281) from rear flange (201). NOTE! Take care not to damage the piston hole. NOTE! Since rear flange (201) and piston (281) are of the selective fitting type, replace them together as a kit. ...
  • Page 8 Figure 16 Plug, removal  Remove plug (104) and remove sleeve (102). NOTE! Do not interchange the parts of the two relief valves.  Remove O-ring (110) from plug (104). NOTE! Do not reuse O-ring after removal.  Remove shim (105) from plug (104). ...
  • Page 9 Shim, removal Figure 20 Relief valve piston, removal Hydraulic motor, disassembly 11. Parking brake removal. WARNING Abrupt injection of compressed air may cause piston to pop out. To ensure your safety, apply a protective cover over the piston. Figure 21 Apply the compressed air ...
  • Page 10 Figure 22 Brake piston, removal  Remove O-rings (35 and 39) from piston (12). NOTE! Do not reuse O-rings (35) (39) after removal. 12. Removal of rotary group. Figure 23 Cylinder block, removal  Place an oil pan under spindle (302). NOTE! Pistons must be installed into the same bores because of wear pattern.
  • Page 11 Figure 24 Needle roller, removal 13. Remove the swash plate (3) from spindle (302). Figure 25 Swash plate, removal 14. Remove the drive shaft (2) from spindle (302) by striking the front part lightly with a plastic hammer. Figure 26 Drive shaft, removal 15.
  • Page 12 Figure 27 Bearing, removal 16. Remove the steel ball (67) and parallel pin (71) from spindle (302). WARNING Abrupt injection of compressed air may cause piston to pop out. To ensure your safety, apply a protective cover over the piston. Figure 28 Steel ball and parallel pin, removal 17.
  • Page 13 18. Remove the seal (32) from spindle (302). Figure 30 Bearing and seal, removal 19. Cylinder block disassembly  Place cylinder block (4) on a press bench, then while pressing holding retainer (I) against washer (10), remove snap ring (45). NOTE! Press load : 200 kg or over.
  • Page 14 Figure 32 Spring, removal...
  • Page 15 Service Information Document Title: Function Group: Information Type: Date: Track motor, assembly Service Information 2014/6/12 Profile: EXC, EC210B LC [GB] Track motor, assembly Op nbr Precautions  Clean all parts with cleaning solvent and dry with compressed air.  Rework damaged parts and before assembling, prepare all replacement parts. ...
  • Page 16 Figure 1 Plug, install 2. Counterbalance spool  Insert spool (223) into rear flange (201). NOTE! Apply hydraulic oil to spool (223) and insert it into rear flange (201). NOTE! Damage to the bore section of the rear flange or the surface of the spool may cause internal leakage to occur after reassembling, and motor performance to deteriorate.
  • Page 17 3. Speed selector valve.  Fit O-rings (295) on plugs (257).  Install spring (266) onto spool (263) and insert into rear flange (201). NOTE! Apply grease to the O-ring. NOTE! Apply hydraulic oil to spool (263) and insert it into rear flange (201). NOTE! Damage to the bore section of the rear flange or the surface of the spool may cause internal leakage to occur after reassembling, and motor performance to deteriorate.
  • Page 18 Thank you very much for reading. This is part of the demo page. GET MORE: Hydraulic System, Setting Instructions, Functional Description, Electrical System And more…… Click Here BUY NOW Then Instant Download the Complete Manual.

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Ec210b lc