Caterpillar cat m322 c wheeled excavator (prefix bdy) service repair manual (bdy00001 02000)

Service Repair Manual
Models
M322C WHEELED Excavator

Shutdown SIS
Previous Screen
Product: WHEELED EXCAVATOR
Model: M322C WHEELED EXCAVATOR BDY
Configuration: M322C Excavator BDY00001-02000 (MACHINE) POWERED BY 3056 Engine
Disassembly and Assembly
M318C MH and M322C MH Excavators Power Train
Media Number -RENR7011-03 Publication Date -01/10/2006 Date Updated -25/10/2006
i06216406
Final Drive Carriers, Hubs and Brakes - Assemble - Rear
Axle
SMCS - 4054-016; 4092-016; 4253-016; 4255-016
Assembly Procedure
Table 1
Required Tools
Tool Part Number Part Description Qty
C
1P-1859 Retaining Ring Pliers 1
1P-1853 Retaining Ring Pliers 1
1U-8758 Retaining Ring Pliers 1
E
6V-6080 Torque Multiplier Gp 1
4C-4661 Center Ring 1
4C-4058 Spanner 1
F 1U-6415 Three Jaw Puller 1
H 1P-0510 Driver Gp 1
I 9S-7354 Torque Wrench Gp 1
J 9U-5006 Torque Wrench Gp 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
1/24(W)w
2020/3/27https://127.0.0.1/sisweb/sisweb/techdoc/techdoc_print_page.jsp?returnurl=/sisweb/sisw...

P 123-6695 Driver 1
Q 4C-3085 Two Jaw Puller 1
R 182-1744 Bearing Puller 1
S 6V-6640 Sealant 1
T 5P-0960 Molybdenum Grease 1
U 9S-3263 Thread Lock Compound 1
V 129-1063 Rivet Tool 1
Illustration 1 g00915150
1. Install the O-ring seals on connector (40) . Install connector (40) in the spindle.
2. Install breather valve (42) in the spindle.
3. Install O-ring seal (41) in the spindle.
Note: Some spindle assemblies will have four plugs. If the plugs have been removed, use
Tooling (V) to install four new plugs in each spindle assembly.
2/24(W)w

4. Install spindle (39) in the spindle's original location.
5. Install bolts (37) . Tighten the socket head bolts to a torque of 280 N·m (210 lb ft).
6. Install slotted nut (38) .
7. Use Tooling (P) to install plate (36) on the spindle. Install the plate until the plate makes
contact with the face of the spindle.
8. Heat inner bearing cone (35) to a temperature of 135 °C (275 °F). Install inner bearing cone
(35) on the spindle. Make sure that the bearing cone is seated against the shoulder on the
spindle.
3/24(W)w

9. Lower the temperature of the inner bearing cup to a temperature of -75 °C (-103 °F). Install
the inner bearing cup in hub (31) . Use Tooling (G) to seat the inner bearing cup in the hub.
10. Invert the hub. Lower the temperature of outer bearing cup (33) to a temperature of -75 °C
(-103 °F). Install the outer bearing cup in hub (31) . Use Tooling (H) to seat the outer
bearing cup in the hub.
4/24(W)w

11. Install hub (31) onto the spindle.
12. Bushing (32A) is available in several thicknesses. If a new wheel bearing, a new spanner
nut, a new ring gear, or a new hub is used, the thickness of bushing (32A) must be
determined in order to obtain the correct amount of rolling torque on the hub.
13. Install bushing (32A) onto the spindle.
14. Heat outer bearing cone (32) to a temperature of 135 °C (275 °F). Install outer bearing cone
(32) on the housing for the steering axle. Make sure that the outer bearing cone is correctly
seated.
15. Install retaining ring (24) .
16. Install ring (26) into ring gear assembly (20) .
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Note: Slightly stretch one of the O-ring seals (29) prior to installing the seal on the larger
diameter. Heat two backup rings (30) in an oil bath prior to installing the backup rings.
17. Install backup rings (30) and O-ring seals (29) onto brake piston (25) . Install the O-ring
seals so that the oil grooves are facing each other.
18. Install Tooling (N) on brake piston (25) , 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.
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19. Use a press to carefully position brake piston (25) against the shoulder in ring gear assembly
(20) . Remove the installer (part of Tooling (H) ) from the brake piston.
20. Install the springs and bolts (22) into ring gear assembly (20) .
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21. Apply Tooling (U) on the threads of bolts (22) . Tighten nuts (21) until Distance (W)
between the threaded end of each socket head bolt and the contact surface of brake piston
(25) 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 (22) must not exceed 11 N·m (8 lb ft).
8/24(W)w

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.
22. Install ring gear (21) on the housing for the steering axle assembly.
23. Install ring gear assembly (20) without the seals.
24. Apply Tooling (T) to the threads of spanner nut (19) . Install spanner nut (19) .
25. Use the following procedure to tighten spanner nut (19) :
9/24(W)w

a. Install Tooling (E) and Tooling (J) onto spanner nut (19) .
b. Rotate the hub while spanner nut (19) is being torqued. 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).
26. Install two lug nuts on one of the wheel studs. Tighten the lug nuts against each other so that
the lug nuts cannot move. Install an appropriate socket and Tooling (K) on the lug nut.
Position Tooling (K) so that Tooling (K) is in line with the radius of the hub, as shown.
Note: Tooling (K) 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 (K) is not attached to the center of the hub, but to the wheel stud. The
torque reading for Tooling (K) has been recalculated. The calculation is based on the length
of Tooling (K) . The torque reading on Tooling (K) must be 8.2 ± 1.6 N·m (73 ± 14 lb in).
This setting on Tooling (K) will obtain the required rolling torque of 15 ± 3 N·m (133 ± 27
lb in).
27. Use Tooling (K) to slowly rotate the hub. Record the amount of torque that is required to
rotate the hub. The torque reading on Tooling (K) must be 8.2 ± 1.6 N·m (73 ± 14 lb in). If
10/24(W)w

the rolling torque is not correct repeat Steps 14 through Steps 25 by 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 bushing (39) and the correct rolling torque are obtained, the
ring gear and the hub are removed in order to install the seals.
28. After the correct rolling torque of the hub is obtained, use Tooling (E) to remove spanner
nut (19) . Remove ring gear assembly (20) .
29. Remove spacer (32A) .
30. Use Tooling (F) to remove hub (31) .
31. Remove the outer bearing cone (32) . Remove bushing (32A) .
32. Fasten Tooling (R) to inner bearing cone (35) . Fasten Tooling (Q) to Tooling (R) . Remove
the inner bearing cone from the spindle.
11/24(W)w

33. Heat inner bearing cone (35) to a temperature of 135 °C (275 °F). Install the inner bearing
cone in the inner bearing cup.
12/24(W)w

34. Immediately apply Tooling (S) to the outer diameter of lip type seal (34) . Use Tooling (K)
to install lip type seal (34) in hub (31) . Install the seal with the sealing lip toward inner
bearing cone (37) . Tooling (K) will set the depth of the seal in the hub.
35. Install hub (31) onto spindle (39) .
13/24(W)w

36. Install bushing (32A) on the spindle.
37. Heat outer bearing cone (32) to a temperature of 135 °C (275 °F). Install outer bearing cone
(32) on the housing for the steering axle. Make sure that the outer bearing cone is correctly
seated.
14/24(W)w

38. Install O-ring seal (24) and the backup ring.
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.
39. Apply clean hydraulic oil on the O-ring seal that is on the hub. Install ring gear assembly
(20) on the hub. Make sure that the O-ring seal that is on the hub is not damaged.
Note: Install spanner nut (19) on the spindle without O-ring seal (24) nor spacer (32A) .
Tighten the spanner nut by hand so that the O-ring seal and the spacer can be installed on
the spindle. Remove the spanner nut.
40. Apply Tooling (T) to the threads of spanner nut (19) . Install O-ring seal (22) , spacer (23)
and spanner nut (19) on the threaded portion of the spindle.
41. Use the following procedure to tighten spanner nut (19) :
15/24(W)w

a. Install Tooling (E) and Tooling (J) onto spanner nut (19) .
b. Rotate the hub while spanner nut (19) is being torqued. 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).
42. Install lockring (18) . Make sure that the tab on lockring (18) engages with a slot in spanner
nut (19) , as shown.
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43. Use Tooling (C) to temporarily install retaining ring (14) in ring gear (20) . Use Tooling
(M) to measure the distance from the internal face of ring gear assembly (20) to the face of
brake piston (25) . Subtract the thickness of the bar stock. Record this dimension as
Dimension (X) .
44. Use Tooling (M) to measure the distance from the inside face of retaining ring (15) to the
outside face of ring gear assembly (20) . Record this dimension as Dimension (Y) .
45. Subtract Dimension (Y) from Dimension (X) . Record this dimension as Dimension (Z) .
46. Use Tooling (C) in order to remove retaining ring (15) .
47. Use Tooling (M) to measure the thickness of thrust washer (14) . Record this dimension as
Dimension (Q) .
17/24(W)w

48. Use Tooling (M) in order to measure the thickness of plate (16) . There are four outer plates.
Find the total thickness of the four outer plate. Record this dimension as Dimension (R) .
49. Use Tooling (M) in order to measure the thickness of each plate (17) . There are three inner
discs. Find the total thickness of the three inner discs. Record this dimension as Dimension
(S) .
50. Determine the thickness of the outer discs, the inner discs and the thrust washer. Record this
dimension as dimension (T) .
(Q) + (R) + (S) = (T)
51. Determine the piston stroke by subtracting Dimension (T) from Dimension (Z) .
Note: The piston stroke must be 2.6 ± 0.2 mm (0.10 ± 0.01 inch).
Note: Plates are available in various thicknesses.
Note: Install the thinner plates to the outside of the pack.
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52. Install axle shaft (13) . Make sure that the axle shaft engages with the rear differential.
53. Install gear (10) into ring gear assembly (20) .
19/24(W)w

54. Install four discs (17) and three plates (16) into ring gear assembly (20) . Install the discs in
alternating order. Start and end with a plate.
55. Install thrust washer (14) into ring gear assembly (20) .
56. Use Tooling (C) in order to install retaining ring (15) into ring gear assembly (20) .
57. Install gear (9) into sun gear (10) .
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58. Install roller bearing (7) in each of planetary gear (5) . Install the washer and retaining ring
(8) on both sides of roller bearing (7) .
59. Heat planetary gears (5) to temperature of 135 °C (275 °F).
60. Install planetary gears (5) into carrier housing (2) .
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61. Use Tooling (C) in order to install retaining ring (4) .
62. Use the following procedure in order to adjust the end play of sun gear (9) :
a. Use Tooling (L) to measure the distance from the mating surface of the planetary
carrier to the bottom of the counterbore for the thrust washer. Subtract the thickness
of the bar stock. Record this dimension as Dimension (H) .
b. Push in on sun gear (9) . Use Tooling (L) to measure the distance from the end of the
sun gear to the mating surface on the hub, as shown. Subtract the thickness of the bar
stock. Record this dimension as Dimension (J) .
c. Subtract Dimension (J) from Dimension (H) . Record this dimension as Dimension
(K) . Subtract the desired end play of 0.50 ± 0.10 mm (0.020 ± 0.004 inch) from
dimension (K) in order to determine the correct thickness of thrust washer (6) .
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d. Select the appropriate thickness of thrust washer (6) that is determined in Step 62.a
through Step 62.c. Install the thrust washer in the planetary carrier, as shown.
Note: Engaging the planetary gears in carrier housing (2) with the ring gear may be difficult
during the installation of the planetary carrier.
63. Fasten an suitable lifting device to the lifting sling. Place the planetary carrier in the
planetary carrier's original location on the wheel studs in the hub. Temporarily install four
lug nuts. Install the lug nuts in 90 degree intervals. The planetary gears in the planetary
carrier will not be engaged with ring gear (20) at this time. Slowly rotate the hub on the
opposite side of the axle. Tighten each lug nut slightly. Continue to tighten each lug nut
slightly. The force of the lug nuts against the planetary carrier and the slow rotation of the
hub will cause the planetary gears in the planetary carrier to engage with the ring gear. After
the planetary carrier is correctly installed, remove the four lug nuts.
64. Install bolts (1) .
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65. Connect hose assembly (3) .
End By: Install the tire and rim (rear). Refer to Disassembly and Assembly, "Tire and Rim Install
(Rear)".
Copyright 1993 - 2020 Caterpillar Inc.
All Rights Reserved.
Private Network For SIS Licensees.
Fri Mar 27 07:33:29 UTC+0800 2020
24/24(W)w

Shutdown SIS
Previous Screen
Product: WHEELED EXCAVATOR
Model: M322C WHEELED EXCAVATOR BDY
Configuration: M322C Excavator BDY00001-02000 (MACHINE) POWERED BY 3056 Engine
Disassembly and Assembly
M318C MH and M322C MH Excavators Power Train
Media Number -RENR7011-03 Publication Date -01/10/2006 Date Updated -25/10/2006
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
1/19(W)w

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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).
2/19(W)w

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).
3/19(W)w

Caterpillar cat m322 c wheeled excavator (prefix bdy) service repair manual (bdy00001 02000)

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