Caterpillar Cat 427F2 Backhoe Loader (Prefix HWK) Service Repair Manual Instant Download.pdf

Service Repair Manual
Models
427F2 Backhoe Loader

Shutdown SIS
Previous Screen
Product: BACKHOE LOADER
Model: 427F2 BACKHOE LOADER HWK
Configuration: 427F2 Side Shift Backhoe Loader HWK00001-UP (MACHINE) POWERED BY C3.4 Engine
Disassembly and Assembly
422F2, 427F2, 428F2, 432F2, 434F2 and 444F2 Backhoe Loaders Powertrain
Media Number -UENR3743-01 Publication Date -01/06/2015 Date Updated -05/06/2018
i06194852
Axle Housing (Service Brakes, Differential and Bevel Gear) -
Disassemble
SMCS - 3256-015; 3258-015; 3260-015; 4251-015
Disassembly Procedure
Table 1
Required Tools
Tool Part Number Part Description Qty
A 202-7965 Spanner Wrench 1
B 1P-2321 Combination Puller 1
C 235-2784 Adjusting Tool Gp 1
D 8H-0663 Bearing Puller Gp 1
Start By:
a. Remove the axle housing.
NOTICE
Keep all parts clean from contaminants.
Contaminants may cause rapid wear and shortened component life.
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https://127.0.0.1/sisweb/sisweb/techdoc/techdoc_print_page.jsp?returnurl=/sis...

Illustration 1 g01636808
1. Remove plates (1), brake discs (2), and brake hub (4) from the brake cylinder assembly.
Remove dowels (3).
Personal injury can result from being struck by parts propelled by a
released spring force.
Make sure to wear all necessary protective equipment.
2/13
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Follow the recommended procedure and use all recommended tooling to
release the spring force.
2. Remove bolts (10), washers (9), bushing (8), and spacer (7). Remove bolts (16), retainers
(15), springs (14), springs (13), and bushings (12), as an assembly. Use a suitable pry bar
and remove brake piston (6) from brake cylinder assembly (11). Remove O-ring seals (5)
from brake piston (6). Repeat this step for the opposite side.
3. Remove bolts (17) from brake cylinder assembly (11).
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Note: Before you remove brake cylinder assembly (11), make location marks for
installation purposes.
4. Remove brake cylinder assembly (11).
5. Repeat Step 3 and Step 4 for the opposite side.
6. Remove the differential and bevel gear assembly (18) from the bevel gear side of the center
housing.
7. Remove bolt (20) and retainer (19). Use Tooling (A) to remove spanner nut (22). If
necessary, remove bearing cup (21) from brake cylinder assembly (11). Repeat this step for
the opposite side.
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8. Use Tooling (B) in order to remove bearing cone (23).
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9. Lock the differential in a vise. Remove bolts (24) and bevel gear (25) from the differential.
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10. Use Tooling (B) to remove bearing cone (26).
11. Remove collar (28), pins (27), and the seals.
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12. Remove cover (29), thrust washer (30), and side gear (32). Use a suitable punch and a
hammer in order to drive out locking pins (31). Remove planetary shafts (33).
13. Remove thrust washers (34), gears (35), spider (36), side gear (38), and thrust washer (37).
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14. Remove bolts (40) and remove brake assembly (39) as a unit. Straighten the locking tab
from nut (41).
15. Use Tooling (C) in order to hold brake disc (42) and remove nut (41) (not shown).
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16. Remove washer (44), O-ring seal (43), and brake disc (42).
17. Remove lip seal (45) from the center housing.
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427F2 Side Shift Backhoe Loader HWK00001-UP (MACHINE) POWERED BY C...
2019/12/7

18. Tap the end of pinion shaft (46) with a soft hammer in order to remove pinion shaft (46)
from the center housing.
19. Remove bearing cone (48), washers (49), and collapsible spacer (47) from pinion shaft (46).
Discard collapsible spacer (47).
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20. Use Tooling (D) and a suitable press in order to remove bearing cone (50) from pinion shaft
(46). Remove the shim that is positioned under bearing cone (50). Check the shim for wear.
If necessary, replace the shim.
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Personal injury can result from being struck by parts propelled by a
released spring force.
Make sure to wear all necessary protective equipment.
Follow the recommended procedure and use all recommended tooling to
release the spring force.
21. Remove bolts (66), cover (65), and O-ring seal (64).
22. Remove piston (63) from cover (65). Remove O-ring seals (62) from piston (63).
23. Remove retaining ring (61), bushing (60), and spring (59) from rod (55).
24. Remove bolts (51), cover (52), O-ring seal (53), spring (54), and washer (56) from the
center housing.
25. Remove rod (55) from fork (58). Remove retaining ring (57) from rod (55). Remove fork
(58) from the center housing.
26. Use a suitable hammer and a punch in order to remove bearing cups (67) from the center
housing.
Copyright 1993 - 2019 Caterpillar Inc.
All Rights Reserved.
Private Network For SIS Licensees.
Sat Dec 7 11:43:05 UTC+0800 2019
13/13
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Shutdown SIS
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i06038944
System Pressure - Release
SMCS - 4250-553-PX; 4300-553-PX; 5050-553-PX
Release Procedure
1. Park on a level surface. If you must park on a grade, chock the machine.
2. Apply the service brake in order to stop the machine. Move the transmission control to the
NEUTRAL position.
3. Move the speed control lever to the LOW IDLE position.
4. Engage the parking brake.
5. Engage the transmission neutral lock.
6. Lower all attachments to the ground.
7. Stop the engine.
8. Turn the engine start switch key to OFF position for 4 seconds.
9. Turn the engine start switch key back to ON position without starting the engine.
10. Press the hydraulic shutoff switch to the ON position.
11. Operate all hydraulic controls through all positions in order to relieve hydraulic pressure.
Repeat this step until all hydraulic pressure is released.
12. Move the hydraulic control levers to the HOLD position.
13. Turn the engine start switch to OFF position and remove the key.
Sat Dec 7 11:44:01 UTC+0800 2019
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Shutdown SIS
Previous Screen
i06190624
Solenoid Valve (Transmission) - Remove and Install
SMCS - 5479-010-T3
Removal Procedure
1. Remove bolts (2), plate (3), and floor mat (1).
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2. Remove bolts (4) and position floorplate (5) to the side.
3. Cut cable straps (8). Disconnect harness assemblies (7). Remove the four plugs and bolts
(6). Remove solenoid valve (9). Repeat for the remaining solenoid valves.
Installation Procedure
1. Install solenoid valve (9) in the reverse order of removal.
a. Tighten bolts (6) in a crisscross pattern to a torque of 1 N·m (9 lb in). Retorque bolts
(6) to a final torque of 8 N·m (71 lb in).
Sat Dec 7 11:44:57 UTC+0800 2019
2/2
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Shutdown SIS
Previous Screen
i06145776
Transmission (Direct Drive) - Remove
SMCS - 3030-011-DD
Removal Procedure
Table 1
Required Tools
Tool Part Number Part Description Qty
A 422-2352 Support Stand As 2
B 444-0526 Air/Hydraulic Jack Gp 1
C
8S-7640 Stand 2
8S-7611 Tube 2
8S-7615 Pin 2
D
1U-7505 Hydraulic Jack 1
1U-7558 Mounting Adapter Gp 2
E 456-4449 Support Tube 1
F 1U-7505 Hydraulic Jack 1
G 308-3471 Jack Stand Gp 2
1. Connect the lock for the boom. Refer to Operation and Maintenance Manual, "Boom Lock".
2. Connect the lock for the swing boom. Operation and Maintenance Manual, "Swing Lock
Pin Control".
3. Connect the lock for the extendable stick. Refer to Operation and Maintenance Manual,
"Extendable Stick Lock Control ".
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Caterpillar Cat 427F2 Backhoe Loader (Prefix HWK) Service Repair Manual Instant Download.pdf

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