Caterpillar cat m318 c wheeled excavator (prefix bcz) service repair manual (bcz02001 and up)

Service Repair Manual
Models
M318C WHEELED Excavator

Shutdown SIS
Previous Screen
Product: WHEELED EXCAVATOR
Model: M318C WHEELED EXCAVATOR BCZ
Configuration: M318C Excavator BCZ02001-UP (MACHINE) POWERED BY 3056E Engine
Disassembly and Assembly
M318C Wheeled Excavator Power Train
Media Number -RENR6675-05 Publication Date -01/08/2018 Date Updated -29/08/2018
i04706197
Final Drive Carriers, Hubs and Brakes - Disassemble - Front
Axle
SMCS - 4054-015; 4092-015; 4253-015; 4255-015
Disassembly Procedure
Table 1
Required Tools
Tool Part Number Part Description Qty
A 147-1744 Bearing Puller 1
B 1P-0510 Driver Gp 1
C 1P-1859 Retaining Ring Pliers 1
D 5F-4764 Pry Bar 2
E
6V-6080 Torque Multiplier Gp 1
4C-4061 Center Ring 1
4C-4058 Spanner 1
F 1U-6415 Three Jaw Puller 1
G 1U-6405 Three Jaw Puller 1
H 1P-1853 Retaining Ring Pliers 1
J 1U-8758 Retaining Ring Pliers 1
ZZ
6V-9508 Face Seal Plug 1
6V-9829 Cap As 1
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2020/4/6https://127.0.0.1/sisweb/sisweb/techdoc/techdoc_print_page.jsp?returnurl=/sisweb/siswe...

Start By:
A. Remove the tire and rim (front). Refer to Disassembly and Assembly, "Tire and Rim -
Remove (Front)".
B. Release the hydraulic system pressure. Refer to Disassembly and Assembly, "Hydraulic
System Pressure - Release".
Note: SERVICE DATA: TOOLING (ZZ) WILL NOT BE IDENTIFIED IN
PHOTOGRAPHS IN THE REMOVAL OR THE INSTALLATION. THIS TOOLING IS
SHOWN IN ORDER TO ASSIST THE EXPERIENCED SERVICEMAN.
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.
At operating temperature, the hydraulic oil is hot and under pressure.
Hot oils can cause burns.
To prevent possible personal injury, release the pressure in the work
tool hydraulic circuit (boom, stick, bucket, and swing), travel circuits,
and the hydraulic oil tank at the filler cap before any hydraulic lines or
components are disconnected or removed.
Remove the filler cap only when the engine is stopped and the filler cap
is cool enough to touch.
1. Drain the front final drives. Final drives with oil cooled disc brakes have approximately 2.0
L (.5 US gal).
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Illustration 1 g01137933
2. Attach a suitable lifting device to carrier housing (2) .
3. Remove retaining bolts (1) .
4. Remove carrier housing (2) . The weight of carrier housing (2) is approximately 25 kg (55
lb).
5. Disconnect hose assembly (3) and plug.
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6. Use Tooling (C) in order to remove retaining ring (4) .
7. Use Tooling (D) in order to remove planetary gears (5) from the housing.
8. Remove thrust washer (6) .
9. Remove retaining rings (8) and the washers from planetary gear (5) .
10. Remove roller bearing (7) from planetary gear (5) .
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11. Use Tooling (H) in order to remove retaining ring (9) .
12. Remove washer (10) .
13. Remove hex bolt (11) .
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14. Remove sun gear (13) .
15. Remove gear (12) .
16. Use Tooling (J) in order to remove retaining ring (14) .
18. Remove four discs (16) and three plates (17) .
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20. Remove lockring (19) from spanner nut (20) .
21. Install Tooling (E) .
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22. Install Tooling (E) in order to remove spanner nut (20) .
23. Install Tooling (F) , Tooling (B) , and a suitable lifting device in order to remove ring gear
assembly (21) .
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.
24. Remove nuts (22) and brake piston (23) from ring gear assembly (21) .
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25. Remove bolts (24) and the springs from ring gear assembly (21) .
26. Remove O-ring seal (25) and the backup ring.
27. Remove retaining ring (26) from the gear assembly.
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28. Use a hammer and a punch in order to remove brake piston (23) and ring (27) from ring
gear assembly (21) .
29. Remove seals (28) .
30. Remove backup rings (29) .
31. Remove O-ring seal (30) from hub assembly (31) .
32. Remove O-ring seal (32) , and the O-ring seal from spindle (33) .
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33. Attach Tooling (F) , Tooling (B) , and a suitable lifting device in order to remove hub
assembly (31) .
34. Remove hub assembly (31) .
Note: When hub (31) is removed from the spindle the outer bearing cone (34) will be loose.
35. Remove bearing cone (34) from hub assembly (31) .
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36. Remove inner bearing cup (35) from hub assembly (31) .
37. Remove seal (37) from hub assembly (31) .
38. Remove outer bearing cup (36) from hub assembly (31) .
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39. Remove spacer (38) from spindle (33) .
40. Install Tooling (G) , Tooling (B) , and Tooling (A) .
41. Remove inner bearing cone (39) from the spindle.
Copyright 1993 - 2020 Caterpillar Inc.
All Rights Reserved.
Private Network For SIS Licensees.
Mon Apr 6 08:12:32 UTC+0800 2020
13/13(W)w

Shutdown SIS
Previous Screen
Product: WHEELED EXCAVATOR
Model: M318C WHEELED EXCAVATOR BCZ
Configuration: M318C Excavator BCZ02001-UP (MACHINE) POWERED BY 3056E Engine
Disassembly and Assembly
M318C Wheeled Excavator Power Train
Media Number -RENR6675-05 Publication Date -01/08/2018 Date Updated -29/08/2018
i04706203
Final Drive Carriers, Hubs and Brakes - Assemble - Front
Axle
SMCS - 4054-016; 4092-016; 4253-016; 4255-016
Assembly Procedure
Table 1
Required Tools
Tool Part Number Part Description Qty
B 1P-0510 Driver Gp 1
C 1P-1859 Retaining Ring Pliers 1
E
6V-6080 Torque Multiplier Gp 1
4C-6061 Center Ring 1
4C-4058 Spanner 1
F 1U-6415 Three Jaw Puller 1
H 1P-1853 Retaining Ring Pliers 1
J 1U-8758 Retaining Ring Pliers 1
K 123-6707 Seal Installer 1
L 6V-7030 Micrometer Depth Gauge Group 1
M 8T-0447 Dial Caliper 1
N 188-7400 Piston Installer 1
P 1P-0808 Multipurpose Grease 1
R 9S-7354 Torque Wrench Gp 1
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S 9U-5006 Torque Wrench 1
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 at all times.
1. Raise the temperature of inner bearing cone (39).
2. Install inner bearing cone (39) onto spindle (33).
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3. Lower the temperature of bearing cup (35) and (36).
4. Use Tooling (B) in order to install bearing cup (36) and (35).
Note: Do not install seals at this time.
5. Install spacer (38) onto spindle (33).
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6. Raise the temperature of bearing cone (34).
7. Install hub assembly (31).
8. Install bearing (34) onto spindle (33).
9. Install ring gear assembly (21) onto spindle (33).
10. Install spanner nut (20).
11. Install Tooling (E) onto spanner nut (20).
12. Rotate the hub while spanner nut (20) is being tightened. Use Tooling (S) in order to tighten
the spanner nut to a torque of 1200 N·m (885 lb ft). Do not exceed a torque of 1464 N·m
(1080 lb ft).
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13. Install Tooling (R).
Note: Tooling (R) must be in line with the radius of the hub, as shown.
Note: The required rolling torque for the roller bearing is 15 ± 3 N·m (133 ± 27 lb in).
Note: The required rolling torque for the roller bearing must be measured from the center of
the hub. Tooling (R) is not attached to the center of the hub, but to the wheel stud. The
torque reading for Tooling (R) has been recalculated. The calculation is based on the length
of Tooling (R). The torque reading on Tooling (R) must be 8.2 ± 1.6 N·m (73 ± 14 lb in).
This setting on Tooling (R) will obtain the required rolling torque of 15 ± 3 N·m
(133 ± 27 lb ft).
Note: If Tooling (R) is not used, the torque must be recalculated. Refer to Sliderule Torque
Computer, SEHS7150. If the sliderule torque computer is not available, calculate the torque
by using the following formula: (15 ± 3 N·m) X (L / (L+R)). L = the length of the arm of
the torque wrench. R = the distance between the center of the hub and the wheel stud.
14. Use Tooling (R) to slowly rotate the hub. Record the amount of torque that is required to
rotate the hub. The torque reading on Tooling (R) must be 8.2 ± 1.6 N·m (73 ± 14 lb in). If
the rolling torque is not correct, repeat Step 5 through Step 13 using a different bushing. If
the rolling torque is greater than the value that is specified, install the next wider bushing. If
the rolling torque is less than the specified value, install the next narrower bushing. Recheck
the rolling torque.
Note: After the correct size for spindle (33) and the correct rolling torque are obtained, the
ring gear and the hub are removed in order to install the seals.
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15. Install Tooling (E).
16. Remove spanner nut (20).
17. Install Tooling (F), Tooling (B), and a suitable lifting device.
18. Remove ring gear assembly (21).
19. Install Tooling (F), Tooling (B), and a suitable lifting device.
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20. Remove hub (31).
21. Use Tooling (K) in order to install seal (37) into hub (31).
22. Install hub (31) onto spindle (33).
23. Heat bearing cone (34).
24. Install bearing cone (34) onto spindle (33).
25. Install backup ring (32) and the O-ring seal onto spindle (33).
26. Install the backup ring and the O-ring seal (30) onto hub (31).
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27. Install retainer (26).
28. Install retaining ring (27) into ring gear assembly (21).
Note: Slightly stretch one of the seals (28) prior to installing the seal on the larger diameter.
Heat two backup rings (29) in an oil bath prior to installing the backup rings.
29. Install backup rings (29) and seal (28) onto brake piston (23). Install the seals so that the oil
grooves are facing each other.
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30. Install Tooling (N) on brake piston (23), as shown. Install the centering ring (part of Tooling
(N)) on the brake piston first. The centering ring is the larger ring in Tooling (N). Install the
installer (part of Tooling (N)) on the brake piston. Remove the centering ring from the brake
piston.
31. Use a press to carefully position brake piston (23) against the shoulder in ring gear assembly
(21). Remove the installer (part of Tooling (K)) from the brake piston.
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32. Position O-ring seal (25) and the backup ring.
33. Install the springs and bolts (24) into ring gear assembly (21).
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34. Apply 9S-3263 Thread Lock Compound on the threads of eight socket head bolts (24).
Tighten nuts (22) until Distance (W) between the threaded end of each socket head bolt and
the contact surface of brake piston (23) is 0.75 ± 0.25 mm (0.030 ± 0.010 inch). Use
Tooling (L) to measure Distance (W) at each socket head bolt. The maximum torque of each
nut that is used on the end of socket head bolts (24) must not exceed 11 N·m (8 lb ft).
Note: Make sure that the holes for the supply oil in the spindle align with the holes for the
supply oil in the ring gear.
35. Apply clean hydraulic oil on O-ring seal (32) and on the split ring that is located on the
housing for the steering axle. Make sure that the ends of the split ring are in contact with
each other. ApplyTooling (P) to O-ring seal (32) and the split ring. Install ring gear (21) on
the housing for the steering axle assembly.
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Caterpillar cat m318 c wheeled excavator (prefix bcz) service repair manual (bcz02001 and up)

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