Caterpillar cat 444 f2 backhoe loader (prefix hws) service repair manual (hws00001 and up)

Service Repair Manual
Models
444F2 Backhoe Loader

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Product: BACKHOE LOADER
Model: 444F2 BACKHOE LOADER HWS
Configuration: 444F2 Side Shift Backhoe Loader HWS00001-UP (MACHINE) POWERED BY C4.4 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
i04776894
Transmission (Power Shift) - Disassemble
SMCS - 3030-015-PM; 3066-015
Disassembly Procedure
Table 1
Required Tools
Tool Part Number Part Description Qty
A 1U-7502 Transmission Repair Stand 1
B 138-7575 Link Bracket 1
C
152-7085(1)
Transmission Shaft Handler 1
189-0409 Shackle As 1
D 1P-0074 Slide Hammer Puller Gp 1
E
8H-0663 Bearing Puller Assembly 1
6V-3010 Puller Gp 1
126-7177 Puller Leg 1
F 1U-6405 Three Jaw Puller 1
G 152-7055 Spring Compressor 1
H 2P-8312 Retaining Ring Pliers 1
(1)
CE Compliant
Start By:
a. Remove the transmission.
1/39444F2 Side Shift Backhoe Loader HWS00001-UP (MACHINE) POWERED BY C4.4 ...
2019/12/8https://127.0.0.1/sisweb/sisweb/techdoc/techdoc_print_page.jsp?returnurl=/sis...

Note: The transmission will be disassembled in major components. The major components will
then be disassembled.
Note: Cleanliness is an important factor. Before the disassembly procedure, the exterior of the
component must be thoroughly cleaned. This will help to prevent dirt from entering the internal
mechanism.
Illustration 1 g01244665
1. Use a suitable lifting device in order to mount transmission assembly (1) onto Tooling (A).
The weight of transmission assembly (1) is approximately 255 kg (562 lb). Remove cable
strap (3) and remove torque converter (2).
2. Remove hose assemblies (4) and coupler (5).

3. Remove bolts (6) and plate (7). Remove gear (8).
4. Remove bolts (9) and pump group (10).

5. Remove seal (11).
6. Remove lip seal (12) from pump group (10).
7. Slide shaft (13) from the transmission.

8. Remove bolts (14) and solenoid valve assemblies (15). Remove tube assembly (16).
9. Remove valve groups (17) and (18).
10. Remove O-ring seals (19) and (20) from valve group (17).

11. Remove O-ring seals (21) and (22) from valve group (18).
12. Remove bolts (23) and filter base assembly (24).
13. Remove O-ring seals (25) from filter base assembly (24).

14. Remove bolt (26) and front output yoke assembly (27). Remove the gasket.
15. Remove bolt (29) and rear output yoke assembly (30). Remove speed sensor (28).
16. Remove bolts (32) and cover (31).

17. Remove O-ring seal (33).
18. Remove screen (34).

19. Attach Tooling (B) and a suitable lifting device to case assembly (35). The weight of case
assembly (35) is approximately 64 kg (140 lb). Remove bolts (36). Use a suitable pry bar in
the slots of the transmission case in order to remove case assembly (35).
20. Remove bearing cups (40), (41), (42), (43) and (44). Remove lip seal (39). Remove tube
assemblies (37) and (38).
21. Remove any shims that may be present under each bearing cup. Record the measurements
of shims in order to aid in the installation procedure.

22. Remove front output shaft assembly (45).
23. Use Tooling (C), the washer, and bolt (29) in order to remove rear output shaft (46), shaft
(47), and input shaft (48). The combined weight of rear output shaft (46), shaft (47), and
input shaft (48) is approximately 61 kg (135 lb).
24. Remove reverse shaft assembly (49).
10/39444F2 Side Shift Backhoe Loader HWS00001-UP (MACHINE) POWERED BY C4...

25. Use Tooling (D) in order to remove bearing cups (50).
26. Remove lip seal (51).
27. Remove tube assemblies (52).
Output Shaft (Front)

1. Remove ring (1).
2. Use Tooling (E) in order to remove bearing cone (2).
3. Use Tooling (F) in order to remove gear (3). Remove spacer (7), bearing cone (6), washer
(5), and needle bearing (4).

4. Remove caged roller bearing (12), spacer (11), caged roller bearing (10), thrust bearing (9),
and washer (8).
5. Remove retaining ring (13) and end plate (14).
6. Remove friction discs (15) and plates (16).

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.
7. Use Tooling (G) and a suitable press in order to compress spring assembly (17) and use
Tooling (H) in order to remove retaining ring (18).
8. Remove spring assembly (17).

9. Position the output shaft, as shown. Use 207 kPa (30 psi) of compressed air in order to
remove piston assembly (19).
10. Remove ring seal (20) and the O-ring seal from piston (19).
Output Shaft (Rear)

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1. Remove rings (1) and (2).
2. Use Tooling (F) in order to remove bearing cone (3). Remove washer (7), thrust bearing (6),
roller bearing (5), and gear (4).
3. Remove roller bearing (8), needle bearing (9), and washer (10).

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.
6. Use Tooling (G) and a suitable press in order to compress spring assembly (15) and use
Tooling (H) in order to remove retaining ring (16).
7. Remove spring assembly (15).
8. Use 207 kPa (30 psi) of compressed air in order to remove piston (17).

9. Remove seals (18) from piston (17).
10. Use Tooling (E) in order to remove bearing cone (19).
11. Use Tooling (F) in order to remove gear (20).

12. Remove roller bearing (25), spacer (24), roller bearing (23), thrust bearing (22), and washer
(21).

Caterpillar cat 444 f2 backhoe loader (prefix hws) service repair manual (hws00001 and up)

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