This document provides instructions for removing and installing the primary hydraulic pump on D25D, D30D, and D350D articulated dump trucks. The instructions include: draining the hydraulic fluid, removing the pump and associated lines and hoses, disassembling and cleaning the pump components, assembling the pump with the correct orientation and torque specifications, and reinstalling the pump along with refilling the hydraulic fluid. Disassembly and assembly of the pump involves removing and installing over 40 individual components in the proper sequence.
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𝘼𝙣𝙩𝙞𝙦𝙪𝙚 𝙋𝙡𝙖𝙨𝙩𝙞𝙘 𝙏𝙧𝙖𝙙𝙚𝙧𝙨 𝙞𝙨 𝙫𝙚𝙧𝙮 𝙛𝙖𝙢𝙤𝙪𝙨 𝙛𝙤𝙧 𝙢𝙖𝙣𝙪𝙛𝙖𝙘𝙩𝙪𝙧𝙞𝙣𝙜 𝙩𝙝𝙚𝙞𝙧 𝙥𝙧𝙤𝙙𝙪𝙘𝙩𝙨. 𝙒𝙚 𝙝𝙖𝙫𝙚 𝙖𝙡𝙡 𝙩𝙝𝙚 𝙥𝙡𝙖𝙨𝙩𝙞𝙘 𝙜𝙧𝙖𝙣𝙪𝙡𝙚𝙨 𝙪𝙨𝙚𝙙 𝙞𝙣 𝙖𝙪𝙩𝙤𝙢𝙤𝙩𝙞𝙫𝙚 𝙖𝙣𝙙 𝙖𝙪𝙩𝙤 𝙥𝙖𝙧𝙩𝙨 𝙖𝙣𝙙 𝙖𝙡𝙡 𝙩𝙝𝙚 𝙛𝙖𝙢𝙤𝙪𝙨 𝙘𝙤𝙢𝙥𝙖𝙣𝙞𝙚𝙨 𝙗𝙪𝙮 𝙩𝙝𝙚 𝙜𝙧𝙖𝙣𝙪𝙡𝙚𝙨 𝙛𝙧𝙤𝙢 𝙪𝙨.
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Discover the reasons why your BMW’s Active Steering malfunction warning might come on. From electrical glitches to mechanical failures and software anomalies, addressing these promptly with professional inspection and maintenance ensures continued safety and performance on the road, maintaining the integrity of your driving experience.
2. Shutdown SIS
Previous Screen
Product: ARTICULATED TRUCK
Model: D30D ARTICULATED TRUCK 3AJ
Configuration: D25D, D30D, D350D ARTICULATED TRUCK 3AJ00001-00414 (MACHINE) POWERED BY 3306 ENGINE
Disassembly and Assembly
D25D,D30D AND D350D ARTICULATED DUMP TRUCKS VEHICLE SYSTEMS
Media Number -SENR8210-01 Publication Date -01/03/2005 Date Updated -05/12/2017
SENR82100014
Primary Hydraulic Pump
SMCS - 5073-010; 5073-015; 5073-016
Remove & And Install Primary Hydraulic Pump
To prevent personal injury release the pressure from the hydraulic
system before any lines are removed or disconnected.
NOTE: Put identification on all lines, hoses and tubes for installation purposes.
1. Drain the hydraulic fluid from the hydraulic tank.
2. Put tool (A) in position under the guard (2).
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3. 3. Remove two rear guard bolts (1) and then lower the guard (2) as far as possible.
4. Disconnect hydraulic line (3) from the pump.
5. Remove two hose clamps (4) and then remove rubber hose section (5).
6. Fasten straps and a hoist to the primary hydraulic pump.
7. Disconnect bottom hose from the primary hydraulic pump.
8. Remove the pump mounting bolts and then remove primary hydraulic pump (6).
9. Weight of the primary hydraulic pump is 34 Kg (75 lbs.).
NOTE: The following steps are for the installation of the primary hydraulic pump.
10. Put the primary hydraulic pump in position with the mounting bolts that hold it.
11. Install bottom hose to the primary hydraulic pump.
12. Install rubber hose section (5) with two hose clamps (4).
13. Connect hydraulic line (3) to the pump.
14. Raise the guard (2) with tool (A) and install two rear bolts (1).
15. Fill the hydraulic tank with hydraulic fluid to the correct level. See the MAINTENANCE
MANUAL.
Disassemble Primary Hydraulic Pump
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4. Start By:
a. remove primary hydraulic pump
1. Clean the outside of the pump body and cover. Prior to disassembly, put reference marks
between the end cover and center cover and the pump body. These marks will be reference for
correct port relation at assembly.
2. Remove bolts (1).
3. Remove cover (3). The cartridge will be removed when the cover is removed from hydraulic
from hydraulic oil pump (2).
4. Remove O-ring seal (4) and cartridge (5).
5. Remove seal (6).
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5. 6. Remove back-up ring (7) and O-ring seal (8).
NOTE: Put an alignment mark across the components of the cartridge to give reference for the
correct assembly.
NOTE: Make a note of the directions of the arrows at locations (X) and (Y) and the location of
bolts (9) for correct assembly purposes. The arrows indicate the direction of rotation of the
hydraulic oil pump. Bolts (9) are installed in the holes next to the arrows that show the direction of
pump rotation.
7. Remove bolts (9).
8. Remove plate (10).
9. Remove seal and retainers (11).
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6. 10. Remove plate (12).
11. Remove ring (13).
12. Put a large rubber band around rotor (14) to hold the vanes and inserts in place. Remove rotor
(14).
13. Remove vanes (15). Remove inserts (16). Check each vane (15) for wear or damage. Each
vane must move freely in its opening (slot) in the rotor. Each insert must move freely in its vane.
14. Remove plate (17).
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7. 15. Remove seal and retainers (19).
16. Remove bolts (20) and cover (21).
17. Remove O-ring seal (22), cartridge (23), and the seal below the cartridge in pump body (24).
18. Remove back-up (25) and O-ring seal (26).
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8. NOTE: Put an alignment mark across the components of the cartridge to give reference for the
correct assembly.
NOTE: Make a note of the directions of the arrows at locations (X) and (Y) and the location of
bolts (27) for correct assembly purposes. The arrows indicate the direction of rotation of the
hydraulic oil pump. Bolts (27) are installed in the holes next to the arrows that show the direction
of pump rotation.
19. Remove bolts (27).
20. Remove plate (28).
21. Remove seal and retainers (29).
22. If necessary, remove bearing (46) with tooling (B).
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9. 23. Remove plate (30).
24. Remove ring (31).
25. Put a large rubber band around rotor (32) to hold the vanes and inserts in place. Remove rotor
(32).
26. Remove vanes (34). Remove inserts (33). Check each vane (34) for wear or damage. Each
vane must move freely in its opening (slot) in the rotor. Each insert must move freely in its vane.
27. Remove plate (36).
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10. 28. Remove seal and retainers (37).
29. Remove retaining ring (38) with tool (A).
30. Use a press and tooling (B) and remove shaft (39).
31. Remove retaining ring (40).
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11. 32. Remove bearing (41) and washer (42).
33. Remove two lip type seals (43).
Assemble Primary Hydraulic Pump
1. Clean all parts and inspect for wear or damage. Damage to any component of either cartridge
group, except seals, will require replacement of the complete cartridge group. See Diagnosing
Hydraulic Pump Failures (Form No. SEBD0501.
2. During assembly, all components must be installed in the correct direction of pump rotation.
Pump rotation as seen from the drive end of the shaft is counterclockwise. Put clean oil on all
parts during assembly.
3. Use tooling (B) and install lip type seal (43) in the pump body. Install the seal with the lip
toward the pump shaft bearing.
4. Turn the pump body over. Use tooling (B) and install the inner lip type seal. Install the seal with
the lip toward the pump shaft bearing.
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12. 5. Install washer (42) and bearing (41).
6. Install retaining ring (40).
7. Put a piece of 2.54 cm (1 in.) diameter pipe that is 20.32 cm (8 in.) long in position against the
inner race of the bearing (41). Use tooling (B), pipe (44) and a press and install shaft (39).
8. Use tooling (A) and install retaining ring (38).
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13. 9. Install seal (45).
10. Install the O-ring seals in retainers (37). Install the retainers with the O-ring seals in contact
with end plate (35).
11. Put plate (36) in position so the bronze side of the plate is toward the rotor.
NOTE: When vanes (34) are installed correctly, the rear edge of each vane is next to the balance
opening (slot) in the rotor.
12. Install inserts (33) in vanes (34) and install them in rotor (32). The leading edge of each vane
is toward the direction (arrow) of pump rotation. Each vane (34) must move freely in its slot in the
rotor. Each insert (33) must move freely in vane (34).
13. Put a large rubber band around rotor (32) to hold the vanes and inserts in the rotor.
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14. 14. Put rotor (32) on plate (36). Be sure the leading edge of the vanes are in the direction of pump
rotation. Remove the rubber band.
15. Put ring (31) in position. Make sure the arrow on the chamfer of the ring is in the same
direction as the rotation of the rotor.
NOTICE
Make sure the notches on the outside diameter of the plates are in
alignment. Make an alignment of these notches with the chamfers on
ring (31).
16. Install plate (30) with the bronze face toward the rotor.
17. If it was necessary to remove bearing (46), use tooling (B) and a press and install bearing (46).
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15. 18. Install the O-ring seals in retainers with the O-ring seals in contact with end plate (28).
19. Put plate (28) in position.
20. Install bolts (27) in the holes nearest the arrows that are in the same direction as the arrow on
ring (31). These arrows show the direction of pump rotation and must be assembled with the
arrows in the same direction. Tighten bolts (27) to a torque of 10-12 N·m (88-106 lb.in.)
21. Install O-ring seal (26) and back-up ring (25). Install the O-ring seal on the rotor side of the
groove.
22. Install cartridge (23). Put the cartridge in position so the pins in the plate are in alignment with
the mounting holes in pump body (24) as shown.
23. Install O-ring seal (22).
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16. 24. Make sure the pins in the plate of the cartridge are in alignment with the cover (21). Install
pump body (24) and cartridge (23) in cover (21). Install the bolts that hold the cover to the pump
body.
25. Install the O-ring seal in retainers (19). Install the retainers with the O-ring seals in contact
with end plate (18).
26. Put plate (17) in position so the bronze side of the plate is toward the rotor.
27. Install inserts (16) in vanes (15) and install them in rotor (14). The leading edge of each vane
is toward the direction (arrow) of pump rotation. Each vane (15) must move freely in its slot in the
rotor. Each insert (16) must move freely in vane (15).
28. Put a large rubber around rotor (14) to hold the vanes and inserts in the rotor.
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17. 29. Put rotor (14) on plate (17). Be sure the leading edge of the vanes are in the direction of pump
rotation. Remove the rubber band.
30. Put ring (13) in position. Make sure the arrow on the chamfer of the ring is in the same
direction as the rotation of the rotor.
31. Install plate (12) with the bronze face toward the rotor.
32. Install the O-ring seals in retainers (11). Install the retainers with the O-ring seals in contact
with end plate (10).
33. Put plate (10) in position.
34. Install bolts (9) in the holes nearest the arrows that are in the same direction as the arrow on
ring (13). These arrows show the direction of pump rotation and must be assembled with the
arrows in the same direction.
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18. Thank you very much for
your reading. Please Click
Here. Then Get COMPLETE
MANUAL. NO WAITING
NOTE:
If there is no response to
click on the link above,
please download the PDF
document first and then
click on it.
19. 35. Install O-ring seal (8) and back-up ring (7). Install the O-ring seal on the rotor side of the
groove.
36. Install seal (6).
37. Install cartridge (5). Put the cartridge in position so the pins in the plate are in alignment with
the mounting holes in cover (3) as shown.
38. Install O-ring seal (4).
39. Make sure the pins in the plate of the cartridge are in alignment with the holes in cover (21).
Install cover (3) and the cartridge in cover (21). Install the bolts that hold the covers together.
Tighten the bolts to a torque of 95 ± 7 N·m (70 ± 5 lb.ft.).
End By:
a. install primary hydraulic pump
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20. Copyright 1993 - 2020 Caterpillar Inc.
All Rights Reserved.
Private Network For SIS Licensees.
Fri Feb 21 21:19:08 UTC+0800 2020
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21. Shutdown SIS
Previous Screen
Product: ARTICULATED TRUCK
Model: D30D ARTICULATED TRUCK 3AJ
Configuration: D25D, D30D, D350D ARTICULATED TRUCK 3AJ00001-00414 (MACHINE) POWERED BY 3306 ENGINE
Disassembly and Assembly
D25D,D30D AND D350D ARTICULATED DUMP TRUCKS VEHICLE SYSTEMS
Media Number -SENR8210-01 Publication Date -01/03/2005 Date Updated -05/12/2017
SENR82100015
Supplemental Steering Pump
SMCS - 4306-010; 4306-015; 4306-017
Remove & Install Supplemental Steering Pump
To prevent personal injury release the pressure from the hydraulic
system before any lines are removed or disconnected.
NOTE: The truck must be turned at least one half of its turning radius for removal of the
supplemental steering pump.
1. Put lock steer assembly (1) in position on the steering cylinder.
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22. 2. Disconnect hydraulic hoses (2) and (5) from the supplemental steering pump.
3. Remove nuts (4) and then remove supplemental steering pump (3).
NOTE: The following steps are for the installation of the supplemental steering pump.
4. Put the supplemental steering pump (3) in position with nuts (4).
5. Connect hydraulic hoses (2) and (5) to the supplemental steering pump.
6. Remove lock steer assembly (1) from the steering cylinder.
Disassemble Supplemental Steering Pump
Start By:
a. remove supplemental steering pump
1. Remove bolts (2) to make a separation between pump body (1) pump mounting flange (3).
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