This document provides instructions for removing the piston pump from a 904H Compact Wheel Loader. It outlines 11 steps, which include disconnecting hoses and harnesses, attaching lifting tools to the pump, and removing mounting bolts to lift the pump from the machine. Safety precautions are provided, such as ensuring all attachments are lowered and oil is cool before removal to avoid injury from hydraulic pressure. The piston pump weighs approximately 45 kg.
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.
Over the 10 years, we have gained a strong foothold in the market due to our range's high quality, competitive prices, and time-lined delivery schedules.
Why Is Your BMW X3 Hood Not Responding To Release CommandsDart Auto
Experiencing difficulty opening your BMW X3's hood? This guide explores potential issues like mechanical obstruction, hood release mechanism failure, electrical problems, and emergency release malfunctions. Troubleshooting tips include basic checks, clearing obstructions, applying pressure, and using the emergency release.
Symptoms like intermittent starting and key recognition errors signal potential problems with your Mercedes’ EIS. Use diagnostic steps like error code checks and spare key tests. Professional diagnosis and solutions like EIS replacement ensure safe driving. Consult a qualified technician for accurate diagnosis and repair.
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Women and Youth are encouraged to apply even if you don't fall in those sectors.
Things to remember while upgrading the brakes of your carjennifermiller8137
Upgrading the brakes of your car? Keep these things in mind before doing so. Additionally, start using an OBD 2 GPS tracker so that you never miss a vehicle maintenance appointment. On top of this, a car GPS tracker will also let you master good driving habits that will let you increase the operational life of your car’s brakes.
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Learn what "PARKTRONIC Inoperative, See Owner's Manual" means for your Mercedes-Benz. This message indicates a malfunction in the parking assistance system, potentially due to sensor issues or electrical faults. Prompt attention is crucial to ensure safety and functionality. Follow steps outlined for diagnosis and repair in the owner's manual.
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IBS monitors and manages your BMW’s battery performance. If it malfunctions, you will have to deal with an array of electrical issues in your vehicle. Recognize warning signs like dimming headlights, frequent battery replacements, and electrical malfunctions to address potential IBS issues promptly.
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"Trans Failsafe Prog" on your BMW X5 indicates potential transmission issues requiring immediate action. This safety feature activates in response to abnormalities like low fluid levels, leaks, faulty sensors, electrical or mechanical failures, and overheating.
Learn why monitoring your Mercedes' Exhaust Back Pressure (EBP) sensor is crucial. Understand its role in engine performance and emission reduction. Discover five warning signs of EBP sensor failure, from loss of power to increased emissions. Take action promptly to avoid costly repairs and maintain your Mercedes' reliability and efficiency.
2. Shutdown SIS
Previous Screen
Product: COMPACT WHEEL LOADER
Model: 904H COMPACT WHEEL LOADER H4T
Configuration: 904H Wheel Loader H4T00001-UP (MACHINE) POWERED BY S4Q2T Engine
Disassembly and Assembly
904H Compact Wheel Loader Power Train
Media Number -KENR7636-01 Publication Date -01/10/2011 Date Updated -31/10/2011
i03132349
System Pressure - Release
SMCS - 4250-553-PX; 4300-553-PX; 4350-553-PX; 5050-553-PX
Release Procedure
Personal injury can result from hydraulic oil pressure and hot oil.
Hydraulic oil pressure can remain in the hydraulic system after the
engine has been stopped. Serious injury can be caused if this pressure is
not released before any service is done on the hydraulic system.
Make sure all of the attachments have been lowered, oil is cool before
removing any components or lines. Remove the oil filler cap only when
the engine is stopped, and the filler cap is cool enough to touch with
your bare hand.
1. Lower the implements to the ground.
2. Shut off the engine.
3. Turn the key to the ON position before moving control levers.
4. Move the control levers through the full range of travel in order to release the hydraulic
pressure.
5. Depress the brake pedal repeatedly in order to release the hydraulic pressure.
6. Slowly loosen the filler cap in order to release the tank pressure.
7. Tighten the filler cap.
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3. 8. The pressure in the hydraulic system has been released. Lines and components can be
removed.
Copyright 1993 - 2019 Caterpillar Inc.
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4. Shutdown SIS
Previous Screen
Product: COMPACT WHEEL LOADER
Model: 904H COMPACT WHEEL LOADER H4T
Configuration: 904H Wheel Loader H4T00001-UP (MACHINE) POWERED BY S4Q2T Engine
Disassembly and Assembly
904H Compact Wheel Loader Power Train
Media Number -KENR7636-01 Publication Date -01/10/2011 Date Updated -31/10/2011
i03132299
Bottom Guard - Remove and Install
SMCS - 7153
Removal Procedure
Illustration 1 g01687014
1. Place Tooling (A) under bottom guard (2). Remove bolts (1). Remove bottom guard (2).
The weight of bottom guard (2) is approximately 18 kg (40 lb).
Installation Procedure
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5. Illustration 2 g01687014
1. Position bottom guard (2) on Tooling (A). Position bottom guard (2) and install bolts (1).
The weight of the bottom guard (2) is approximately 18 kg (40 lb).
Copyright 1993 - 2019 Caterpillar Inc.
All Rights Reserved.
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Fri Sep 6 14:53:36 UTC+0800 2019
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6. Shutdown SIS
Previous Screen
Product: COMPACT WHEEL LOADER
Model: 904H COMPACT WHEEL LOADER H4T
Configuration: 904H Wheel Loader H4T00001-UP (MACHINE) POWERED BY S4Q2T Engine
Disassembly and Assembly
904H Compact Wheel Loader Power Train
Media Number -KENR7636-01 Publication Date -01/10/2011 Date Updated -31/10/2011
i03132305
Hydrostatic Pump Drive Mounting Hub and Flange -
Remove
SMCS - 3203-011-FLG; 3203-011-HU
Removal Procedure
Table 1
Required Tools
Tool Part Number Part Description Qty
A 138-7573 Link Bracket 4
Start By:
A. Remove the piston pump. Refer to Disassembly and Assembly, "Piston Pump (Hydrostat) -
Remove".
Illustration 1 g01687706
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7. 1. Install Tooling (A) to adapter plate (1). Remove adapter plate (1) .
Illustration 2 g01687707
2. Remove bolts (2) and flange (3) .
Illustration 3 g01687708
3. Loosen bolt (4) and remove hub (5) from piston pump (6) .
Copyright 1993 - 2019 Caterpillar Inc.
All Rights Reserved.
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Fri Sep 6 14:54:23 UTC+0800 2019
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8. Shutdown SIS
Previous Screen
Product: COMPACT WHEEL LOADER
Model: 904H COMPACT WHEEL LOADER H4T
Configuration: 904H Wheel Loader H4T00001-UP (MACHINE) POWERED BY S4Q2T Engine
Disassembly and Assembly
904H Compact Wheel Loader Power Train
Media Number -KENR7636-01 Publication Date -01/10/2011 Date Updated -31/10/2011
i03132309
Hydrostatic Pump Drive Mounting Hub and Flange - Install
SMCS - 3203-012-FLG; 3203-012-HU
Installation Procedure
Table 1
Required Tools
Tool Part Number Part Description Qty
A 138-7573 Link Bracket 4
Illustration 1 g01687708
1. Position hub (5) on piston pump (6). Install bolt (4). Tighten bolt (4) to a torque of 55 ± 5
N·m (40.6 ± 3.7 lb ft).
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9. Illustration 2 g01687707
2. Install flange (3). Install bolts (2) .
Illustration 3 g01687706
3. Install Tooling (A) in order to install adapter plate (1) .
End By: Install the piston pump. Refer to Disassembly and Assembly, "Piston Pump (Hydrostat) -
Install".
Copyright 1993 - 2019 Caterpillar Inc.
All Rights Reserved.
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Fri Sep 6 14:55:11 UTC+0800 2019
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10. Shutdown SIS
Previous Screen
Product: COMPACT WHEEL LOADER
Model: 904H COMPACT WHEEL LOADER H4T
Configuration: 904H Wheel Loader H4T00001-UP (MACHINE) POWERED BY S4Q2T Engine
Disassembly and Assembly
904H Compact Wheel Loader Power Train
Media Number -KENR7636-01 Publication Date -01/10/2011 Date Updated -31/10/2011
i03310024
Piston Pump (Hydrostatic) - Remove
SMCS - 3203-011-QP; 5070-011-H7
Removal Procedure
Table 1
Tool Part Number Description Quantity
A 140-7742 Sleeve 1
B
1U-9200 Ratchet 1
189-0410 Shackle 1
Start By:
A. Remove the seat. Refer to Disassembly and Assembly, "Seat - Remove".
B. Remove the gear pump. Refer to Disassembly and Assembly, "Gear Pump (Implement)
(Steering) (Hydraulic Fan) - Remove".
Personal injury can result from hydraulic oil pressure and hot oil.
Hydraulic oil pressure can remain in the hydraulic system after the
engine has been stopped. Serious injury can be caused if this pressure is
not released before any service is done on the hydraulic system.
Make sure all of the work tools have been lowered to the ground, and
the oil is cool before removing any components or lines. Remove the oil
filler cap only when the engine is stopped, and the filler cap is cool
enough to touch with your bare hand.
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11. 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, "Caterpillar Dealer Service
Tool Catalog" for tools and supplies suitable to collect and contain
fluids on Caterpillar products.
Dispose of all fluids according to local regulations and mandates.
Illustration 1 g01689213
1. Disconnect hose assembly (2) and hose (3) from piston pump (1) .
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13. Illustration 4 g01167342
Illustration 5 g01167431
4. Attach Tooling (A) and Tooling (B) to the cab.
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14. Illustration 6 g01691014
5. Attach Tooling (B) and a suitable lifting device to piston pump (1) .
Illustration 7 g01691053
6. Remove mounting bolts (11) from piston pump (1). Remove piston pump (1). The weight of
piston pump (1) is approximately 45 kg (100 lb).
Copyright 1993 - 2019 Caterpillar Inc.
All Rights Reserved.
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15. Shutdown SIS
Previous Screen
Product: COMPACT WHEEL LOADER
Model: 904H COMPACT WHEEL LOADER H4T
Configuration: 904H Wheel Loader H4T00001-UP (MACHINE) POWERED BY S4Q2T Engine
Disassembly and Assembly
904H Compact Wheel Loader Power Train
Media Number -KENR7636-01 Publication Date -01/10/2011 Date Updated -31/10/2011
i02338391
Piston Pump (Hydrostatic) - Remove
SMCS - 3203-011-QP; 5070-011-H7
Removal Procedure
Table 1
Tool Part Number Description Quantity
A 140-7742 Sleeve 1
B
1U-9200 Ratchet 1
189-0410 Shackle 1
C 242-6163 Wrench 1
Start By:
A. Remove the seat. Refer to Disassembly and Assembly, "Seat - Remove".
B. Remove the gear pump. Refer to Disassembly and Assembly, "Gear Pump - Remove".
Personal injury can result from hydraulic oil pressure and hot oil.
Hydraulic oil pressure can remain in the hydraulic system after the
engine has been stopped. Serious injury can be caused if this pressure is
not released before any service is done on the hydraulic system.
Make sure all of the attachments have been lowered, oil is cool before
removing any components or lines. Remove the oil filler cap only when
the engine is stopped, and the filler cap is cool enough to touch with
your bare hand.
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16. NOTICE
Care must be taken to ensure that fluids are contained during
performance of inspection, maintenance, testing, adjusting and repair
of the machine. Be prepared to collect the fluid with suitable containers
before opening any compartment or disassembling any component
containing fluids.
Refer to Special Publication, NENG2500, "Caterpillar Tools and Shop
Products Guide", for tools and supplies suitable to collect and contain
fluids in Caterpillar machines.
Dispose of all fluids according to local regulations and mandates.
Note: Put identification marks on all lines, on all hoses, on all wires, and on all tubes for
installation purposes. Plug all lines, all hoses and all tubes. This helps to prevent fluid loss and this
helps to keep contaminants from entering the system.
Illustration 1 g01167299
1. Remove plate (1) .
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18. Illustration 4 g01167336
4. Disconnect hose assemblies (6) and (7) from piston pump (5) .
Illustration 5 g01167337
5. Disconnect hose assemblies (8) and (9) from piston pump (5) .
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19. Illustration 6 g01167341
6. Disconnect cable assembly (10) from piston pump (5). Disconnect hose assembly (11) from
piston pump (5) .
Illustration 7 g01167425
7. Disconnect hose assembly (12) from the bottom of piston pump (5) .
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20. Illustration 8 g01167342
Illustration 9 g01167431
8. Attach Tooling (A) and Tooling (B) to the cab.
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21. Illustration 10 g01167343
9. Attach Tooling (B) and a suitable lifting device to piston pump (5) .
Illustration 11 g01167344
10. Use Tooling (C) in order to remove mounting bolts (13) from piston pump (5) and mounting
flange (14) .
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22. Illustration 12 g01167346
11. Raise piston pump (5) in order to remove the pump from the machine. The weight of piston
pump (5) is approximately 45 kg (100 lb).
Copyright 1993 - 2019 Caterpillar Inc.
All Rights Reserved.
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23. Shutdown SIS
Previous Screen
Product: COMPACT WHEEL LOADER
Model: 904H COMPACT WHEEL LOADER H4T
Configuration: 904H Wheel Loader H4T00001-UP (MACHINE) POWERED BY S4Q2T Engine
Disassembly and Assembly
904H Compact Wheel Loader Power Train
Media Number -KENR7636-01 Publication Date -01/10/2011 Date Updated -31/10/2011
i02327908
Piston Pump (Hydrostatic) - Disassemble
SMCS - 3203-015-QP; 5070-015-H7
Disassembly Procedure
Table 1
Required Tools
Tool Part Number Part Description Qty
A 1P-0510 Driver Group 1
B 1P-1861 Retaining Ring Pliers 1
C 5P-4758 Internal Pliers 1
D 1U-7600 Slide Hammer Puller 1
E 1P-1859 Retaining Ring Pliers 1
F 1P-1857 Retaining Ring Pliers 1
G 1S-4208 Spanner Wrench 1
Start By:
A. Remove the hydraulic drive pump. Refer to Disassembly and Assembly, "Hydraulic Drive
Pump - Remove".
Personal injury can result from hydraulic oil pressure and hot oil.
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24. Hydraulic oil pressure can remain in the hydraulic system after the
engine has been stopped. Serious injury can be caused if this pressure is
not released before any service is done on the hydraulic system.
Make sure all of the work tools have been lowered to the ground, and
the oil is cool before removing any components or lines. Remove the oil
filler cap only when the engine is stopped, and the filler cap is cool
enough to touch with your bare hand.
Note: Cleanliness is an important factor. Before the disassembly procedure, the exterior of the
component should be thoroughly cleaned. This will help to prevent dirt from entering the internal
mechanism. Dirt and contaminants can damage the components of the pump or the motor. All
disassembly and assembly procedures must be performed on a clean work surface. Clean all the
interior components in clean solvent. Dry all the interior components with compressed air. Plug
ports and plug hoses on the machine during repair.
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, "Caterpillar Tools and Shop
Products Guide" for tools and supplies suitable to collect and contain
fluids on Caterpillar products.
Dispose of all fluids according to local regulations and mandates.
Illustration 1 g00775547
1. Remove bolts (1) and remove charge pump (2) .
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25. Illustration 2 g00716074
Note: Mark the location of the charge pump on the head assembly. Crescent (M) of gear set
(4) must face toward the valves for installation purposes. The valves are indicated by
arrows.
2. Remove O-ring seal (3). Remove gear set (4). Keep the gear set together in order to ensure
proper installation of the gear set.
Illustration 3 g00580966
3. Remove bushing (5). Note the orientation of the bushing. The bushing must be installed in
the original location.
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26. Illustration 4 g00580969
4. Remove plate (6). Note the position of the plate.
Illustration 5 g00580995
5. Remove shaft (7) and O-ring seal (8) .
Illustration 6 g00581004
6. Remove retaining ring (9) and key (10) from the shaft.
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27. 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.
28. Illustration 7 g00581009
7. Remove bolts (11) and head assembly (12) .
Illustration 8 g00581016
8. Remove O-ring seals (13) and (14) from the head.
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29. Illustration 9 g00581023
Illustration 10 g00581022
9. Use Tooling (A) in order to remove bushing (15) .
Illustration 11 g00581027
10. Remove bushing (16) .
Note: Mark orientation of groove in bushing (16) for later installation of new bushing into
the original location.
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30. Illustration 12 g00794209
Note: Mark the position of the port plate for installation purposes. The groove in the port
plate must face the two valves on the head assembly.
11. Remove port plate (17) and bearing (18), if necessary.
Note: Perform Steps 12 and 13, if equipped.
Illustration 13 g00794067
12. Remove plug assembly (19) from the head.
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31. Illustration 14 g00794187
13. Disassemble the plug assembly, as follows: O-ring seal (20), O-ring seal (21) and locking
plug (22) .
Illustration 15 g00722813
14. Remove valve (23) from the head.
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32. Illustration 16 g00581200
15. Disassemble the valve, as follows: O-ring seal (26), backup ring (25) and O-ring seal (24) .
Illustration 17 g00581207
16. Remove valve (27) from the head. Refer to Step 15 for the disassembly procedure.
Illustration 18 g01162895
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