5. 7. Install bearings (55) to swashplate (53). Use Tooling (B) to hold the bearings in place for
installation.
8. Install swashplate (53) and remove Tooling (B).
Illustration 10 g06153892
9. Install retainers (51), plugs (52) and the O-rings. Repeat for opposite side.
Note: Ensure retainers (51) lock into pins (54) shown in illustration 7..
Illustration 11 g06153894
10. Install adjustment screw (50) into housing (30). Repeat for opposite side.
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6. Illustration 12 g06153856
11. Place port plate (31) on a flat surface and install Tooling (G).
Illustration 13 g06149897
12. Install Tooling (F) into bearing (49).
Illustration 14 g06149905
13. Install shims (47) into bearing (49).
Illustration 15 g06149911
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7. 14. Install bearing (49) onto barrel (44).
Illustration 16 g06153902
Dimension (X) is 220.95 - 221.20mm (8.698 - 8.708 inch)
Dimension (Y) is 170.95 - 171.20mm (6.730- 6.740 inch)
15. Install barrel assembly (44) onto port plate (31). Install retainer plate (46) onto barrel
assembly (44). Install Tooling (C) and (D) onto retainer plate (46).
16. Use Tooling (G) to measure dimensions (X) and (Y). Adjust the shims under retainer plate
(46) as necessary to achieve the dimensions shown in Illustration 16.
17. Remove Tooling (C) and (D). Remove retainer plate (46) from barrel assembly (44).
Remove barrel assembly (44) from port plate (31).
Illustration 17 g06149911
18. Remove bearing (49) from barrel (44).
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9. Illustration 21 g06149905
21. Apply Tooling (H) to springs (48). Install springs (48) and shims (47) into bearing (49).
Illustration 22 g06149911
22. Install bearing (49) onto barrel (44).
Illustration 23 g06146401
23. Install retainer plate (46) and pistons (45) into barrel (44).
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10. Illustration 24 g06146790
24. Rotate housing (30) to a horizontal position. Use a suitable string to install barrel assembly
(44) into housing (30).
Illustration 25 g06146314
25. Apply Tooling (J) to bolts (42). Install retainer (43) and bolts (42). Repeat for opposite side.
Note: Bolts (42) should be replaced with new bolts.
Illustration 26 g06146295
26. Install cover (41). Repeat for opposite side.
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11. Illustration 27 g06154614
Illustration 28 g06154626
27. Install O-ring seal (39). Install rods (40) and (38). Install piston (37), spring (36), spring
(35), and piston (34).
Illustration 29 g06153915
28. Install bushing (33) and bearing (32) into head (29). Apply Tooling (H) to port plate (31)
and install into head (29).
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12. Illustration 30 g06146219
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.
29. Attach Tooling (B) and a suitable lifting device to head (29). Install head (29) onto housing
(30).
Illustration 31 g06146174
30. Install bolts (28). Tighten bolts (28) to a torque of 780 ± 78 N·m (575 ± 58 lb ft). Install
plug (27) and the O-ring seal. Tighten plug (27) to a torque of 198 ± 20 N·m
(146 ± 15 lb ft).
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13. Illustration 32 g06146164
Illustration 33 g06146158
31. Install plugs (26), (25), and the O-ring seals.
Illustration 34 g06153150
32. Install retaining ring (24A).
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14. Illustration 35 g06153932
33. Install impeller (23) and retaining ring (24).
Illustration 36 g06145926
34. Install adapter (22) and the O-ring seal. Install bolts (21).
Illustration 37 g06145925
35. Install adapter (20) and the O-ring seal. Install bolts (19). Install coupler (18).
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15. Illustration 38 g06145907
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.
36. Install spool (11), guide (12), spring (13), spring (14), guide (15), O-ring seal (16), and
valve (17).
37. Install spool (5), guide (6), spring (7), guide (8), O-ring seal (9), and valve (10).
Illustration 39 g06145896
38. Install O-ring seals (4).
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16. Illustration 40 g06145891
39. Install valve (2) and bolts (3).
Illustration 41 g06145889
40. Install plug (1) and the O-ring seal. Remove the piston pump from Tooling (A).
End By:
a. Install the piston pump.
Copyright 1993 - 2021 Caterpillar Inc.
All Rights Reserved.
Private Network For SIS Licensees.
Tue Nov 23 17:33:33 UTC+0800 2021
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17. Shutdown SIS
Previous Screen
Product: WHEEL LOADER
Model: 990K WHEEL LOADER A9P
Configuration: 990K Wheel Loader A9P00001-UP (MACHINE) POWERED BY C27 Engine
Disassembly and Assembly
990K Wheel Loader and 844K Wheel Dozer Machine Systems
Media Number -UENR6576-05 Publication Date -01/01/2018 Date Updated -26/01/2018
i06545830
Gear Pump (Secondary Steering) - Remove and Install
SMCS - 4324-010-GT; 4324-010; 5073-010-SST; 5073-010
Removal Procedure
Start by:
a. Connect the steering frame lock.
b. Release the hydraulic system pressure.
NOTICE
Care must be taken to ensure that fluids are contained during
performance of inspection, maintenance, testing, adjusting, and repair
of the product. Be prepared to collect the fluid with suitable containers
before opening any compartment or disassembling any component
containing fluids.
Refer to Special Publication, NENG2500, "Dealer Service Tool
Catalog" for tools and supplies suitable to collect and contain fluids on
Cat®
products.
Dispose of all fluids according to local regulations and mandates.
Hot oil and hot components can cause personal injury. Do not allow hot
oil or hot components to contact skin.
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18. Note: Check the O-ring seals, the gaskets, and the seals for wear or for damage. Replace the
components, if necessary.
Note: Cleanliness is an important factor. Before assembly, thoroughly clean all parts in cleaning
fluid. Allow the parts to air dry. Do not use wiping cloths or rags to dry parts. Lint may be
deposited on the parts which may cause trouble. Inspect all parts. If any parts are worn or
damaged, use new parts for replacement. Dirt and other contaminants can damage the precision
component. Perform assembly procedures on a clean work surface. Keep components covered and
protected always.
1. Drain the transmission oil into a suitable container for storage or disposal. Refer to
Operation and Maintenance Manual, "Transmission Oil - Change". Drain enough oil to
bring the oil level below the secondary steering pump.
Illustration 1 g00346175
2. Disconnect hose assemblies (2) from secondary steering pump (3).
Illustration 2 g00346174
3. Remove nuts (4) and secondary steering pump (3).
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19. Illustration 3 g00346176
4. Remove gasket (5) from the pump drive.
Installation Procedure
1. Install secondary steering pump (3) in the reverse order of removal.
Copyright 1993 - 2021 Caterpillar Inc.
All Rights Reserved.
Private Network For SIS Licensees.
Tue Nov 23 17:34:30 UTC+0800 2021
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20. Shutdown SIS
Previous Screen
Product: WHEEL LOADER
Model: 990K WHEEL LOADER A9P
Configuration: 990K Wheel Loader A9P00001-UP (MACHINE) POWERED BY C27 Engine
Disassembly and Assembly
990K Wheel Loader and 844K Wheel Dozer Machine Systems
Media Number -UENR6576-05 Publication Date -01/01/2018 Date Updated -26/01/2018
i00761547
Gear Pump (Secondary Steering) - Disassemble
SMCS - 4324-015-GT; 5073-015-SST
Disassembly Procedure
Start By:
a. Remove the secondary steering pump. Refer to Disassembly and Assembly, "Gear Pump
(Secondary Steering) - Remove".
Illustration 1 g00346187
1. Remove bolts (1) and the washers. Remove body (2) from the secondary steering pump.
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21. Illustration 2 g00346188
2. Remove two pistons (3) and two springs from body (2).
3. Remove two seals (4) from body (2).
Illustration 3 g00346189
4. Remove spacer (5) from body assembly (6).
Illustration 4 g00346190
5. Remove two spacers (7) from spacer (5).
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22. Illustration 5 g00346191
6. Remove two pistons (8) and two springs (9) from body assembly (6).
Illustration 6 g00346232
7. Remove two seals (10) from body assembly (6).
Illustration 7 g00346233
8. Remove bolts (11) and the washers from flange assembly (12). Remove flange assembly
(12) from body assembly (6).
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23. Illustration 8 g00346234
9. Remove seal (13) from flange assembly (12).
Illustration 9 g00346235
10. Remove seals (14) from bushings (15).
Illustration 10 g00346236
11. Remove two dowels (16) and two bushings (15) from flange assembly (12).
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24. Illustration 11 g00346237
12. Remove two lip seals (17) and the ring from flange assembly (12).
Illustration 12 g00346239
Illustration 13 g00346240
13. Remove two metal seals (18) and five plastic seals (19) from body assembly (6).
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25. Please write to us.
Our email:
aservicemanualpdf@yahoo.com
Please go to the homepage
to get the full manual, or
other brand PDF manuals.
Home Site:
aservicemanualpdf.com
26. 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.
GET MORE OTHER MANUALS https://www.aservicemanualpdf.com/
GET MORE OTHER MANUALS https://www.aservicemanualpdf.com/
27. Illustration 14 g00346241
14. Remove plate (20) from body assembly (6).
Illustration 15 g00346242
15. Remove shaft (21) and gear (22) from body assembly (6).
Illustration 16 g00346243
16. Remove plate (23) from body assembly (6).
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28. Illustration 17 g00346244
Illustration 18 g00346245
17. Remove two metal seals (24) and five plastic seals (25) from body assembly (6).
Illustration 19 g00346246
18. Remove seals (26) from bushings (27). Remove bushings (27).
Copyright 1993 - 2021 Caterpillar Inc.
All Rights Reserved.
Private Network For SIS Licensees.
Tue Nov 23 17:35:27 UTC+0800 2021
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29. Shutdown SIS
Previous Screen
Product: WHEEL LOADER
Model: 990K WHEEL LOADER A9P
Configuration: 990K Wheel Loader A9P00001-UP (MACHINE) POWERED BY C27 Engine
Disassembly and Assembly
990K Wheel Loader and 844K Wheel Dozer Machine Systems
Media Number -UENR6576-05 Publication Date -01/01/2018 Date Updated -26/01/2018
i01281269
Gear Pump (Secondary Steering) - Assemble
SMCS - 4324-016-GT; 5073-016-SST
Assembly Procedure
Table 1
Required Tools
Tool Part Number Part Description Qty
A 1P-0510 Driver Gp 1
Note: Thoroughly clean all parts of the secondary steering pump prior to assembly.
1. Check the condition of all seals. If any seals are worn or damaged, use new parts for
replacement . Lubricate the seals with clean hydraulic oil.
2. Apply clean hydraulic oil on all internal parts of the secondary steering pump.
NOTICE
Failure to follow the recommended procedure or the specified tooling
that is required for the procedure could result in damage to
components.
To avoid component damage, follow the recommended procedure
using the recommended tools.
Note: Two isolation plates are required for the bottom of the pump housing. Two isolation
plates are required for the top of the pump housing. The isolation plates hold the seal
components together. The isolation plates that have round edges on one outer radius will be
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