Caterpillar cat 336 d l excavator (prefix prf) service repair manual (prf00001 and up)

Service Repair Manual
Models
336D and 336D L Excavator

Assembly Procedure
Table 1
Required Tools
Tool Part Number Part Description Qty
A 439-3940 Link Bracket 3
B 439-3939 Link Bracket 2
D
8T-9206 Duo-Cone Seal Installer As 1
169-0503 Installation Kit 1
E 1U-9895 Crossblock 1
F - Loctite Copper Anti Seize -
G - Loctite 243 -
H - Loctite RTV Silicone Clear -
J FT-2770 Leak Down Test Tool 1
K 6V-2012 Depth Micrometer 1
L 6V-7059 Micrometer 1
1. Make sure that all parts of the final drive are thoroughly clean and free of dirt and debris
prior to assembly. Check the condition of all O-ring seals that are used in the final drive. If
any of the seals are damaged, use new parts for replacement.
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Illustration 1 g03873123
2. Use Tooling (D) to install Duo-Cone seal (45) .
3. Apply Tooling (F) to the surface of dowels (46) . Install dowels (46) .
4. Raise the temperature of lower bearing cone (47) . Install lower bearing cone (47) on motor
housing (48) .
5. Lower the temperature of bearing cups (43) . Install bearing cups (43) in sprocket housing
(41) .
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6. Use Tooling (D) to install Duo-Cone seal (44) .
7. Attach Tooling (B) and a suitable lifting device to sprocket housing (41) . The weight of
sprocket housing (41) is approximately 110 kg (243 lb). Install sprocket housing (41) .
8. Raise the temperature of upper bearing cone (42) . Install upper bearing cone (42) .
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9. Use Tooling (E) and a suitable press in order to apply force to upper bearing cone (42) .
Apply a force of 4000 kg (8818 lb) to the top of Tooling (E) . Rotate sprocket housing (41)
in order to seat the roller bearings.
10. Reduce the force on top of Tooling (E) to 3000 ± 300 kg (6614 ± 661 lb). Use Tooling (K)
in order to measure Dimension (X) . Record Dimension (X) .
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11. Remove Tooling (E) .
12. Use Tooling (K) in order to measure Dimension (W) on coupling gear (39) . Record
Dimension (W) .
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13. Subtract Dimension (X) from Dimension (W) and record the difference as Dimension (V) .
The correct shim thickness is Dimension (V) . Use Tooling (L) in order to measure the
correct thickness of shims (40) . The tolerance of Dimension (V) is 0 ± 0.05 mm (0.0 ±
0.002 inch).
Note: Use a maximum of two shims (40) . If two shims (40) are used to achieve the proper
dimension, install the thinner of the two shims toward coupling gear (39) .
14. Install shims (40) .
15. Apply Tooling (G) to the threads of bolts (38) . Install coupling gear (39) and bolts (38) .
Tighten bolts (38) to a torque of 900 ± 100 N·m (665 ± 75 lb ft).
16. Install O-ring seal (37) in sprocket housing (41) .
17. Thoroughly clean the mating surface of sprocket housing (41) that makes contact with ring
gear (36) .
18. Attach Tooling (A) and a suitable lifting device to ring gear (36) . Put ring gear (36) in
position on sprocket housing (41) . The weight of ring gear (36) is approximately 65 kg
(143 lb). Make sure that the alignment marks on sprocket housing (38) and ring gear (36)
are lined up with each other.
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19. Install roller bearings (33) in planetary gear assembly (29) .
20. Install washer (32) and washer (35) , and install planetary gear (34) in planetary gear
assembly (29) .
21. Install planetary shaft (31) in carrier assembly (29) .
22. Drive spring pin (30) into planetary shaft (31) .
The stake mark is at position (S) .
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23. Orient the split in spring pin (30) vertically to the carrier. Align the split in the spring pin to
the top or to the bottom. Make a stake mark on each side of the spring pin hole in the
carrier. Each stake mark should be approximately 1.5 mm (0.06 inch) from the outside
diameter of the spring pin hole.
24. Repeat Steps 19 through 23 in order to install the other two planetary gears in the carrier
assembly.
25. Use Tooling (A) and a suitable lifting device to install planetary gear assembly (29) . The
weight of planetary gear assembly (29) is approximately 38 kg (85 lb).
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26. Position sun gear (28) in planetary gear assembly (19) and install retaining ring (23) .
27. Install roller bearing (25) in planetary gear (26) .
28. Install washer (24) and washer (27) , and install planetary gear (26) in planetary gear
assembly (19) .
29. Install planetary shaft (22) in planetary gear assembly (19) .
30. Drive spring pin (21) into planetary shaft (22) .
The stake mark is at position (S) .
31. Orient the split in spring pin (21) vertically to the carrier. Align the split in the spring pin to
the top or to the bottom. Make a stake mark on each side of the spring pin hole in the
carrier. Each stake mark should be approximately 1.5 mm (0.06 inch) from the outside
diameter of the spring pin hole.
32. Repeat Steps 27 through 31 in order to install the other two planetary gears in the carrier.
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33. Install spacer (20) .
34. Use Tooling (A) and a suitable lifting device to install planetary gear assembly (19) . The
weight of planetary gear assembly (19) is approximately 48 kg (105 lb).
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Note: Make sure that the oil passages in the shafts are oriented toward the center of carrier
assembly (17) .
35. Raise the temperature of carrier assembly (17) . Lower the temperature of the shafts. Install
the shafts into carrier assembly (17) until the groove of the shafts is at Dimension (A) .
Dimension (A) equals 25.00 ± 0.10 mm (0.984 ± 0.004 inch).
36. Make eight stake marks at distance of Dimension (C) from each shaft. Dimension (C)
equals 2.0 ± 1.0 mm (0.08 ± 0.04 inch). The width of each stake mark should be equal to
Dimension (B) . Dimension (B) equals 4.0 ± 1.0 mm (0.16 ± 0.04 inch).
37. Install sun gear (18) and retaining ring (14) .
38. Install washer (16) and roller bearing (15) . Install planetary gear (13) and washer (12) .
Install retaining ring (11) .
39. Repeat Step 38 for the other two planetary gears.
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40. Install planetary gear assembly (10) , spacer (9) and sun gear (8) .
41. Install O-ring seals (7) on plugs (4) .
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42. Install plugs (4) in cover (2) . Tighten plugs (4) to a torque of 80 ± 10 N·m (59 ± 7 lb ft).
Install plate (6) in cover (2) . Position gear (5) and install bolts (3) .
43. Place a piece of solder in the center of gear (8) .
Note: You may need to apply some grease to the solder in order to keep the solder in
position on gear (8) .
44. Use Tooling (A) and a suitable lifting device to install cover (2) . The weight of cover (2) is
approximately 32 kg (70 lb).
45. Install four bolts (1) at 90 degrees from each other.
46. Remove bolts (1) .
47. Use Tooling (A) and a suitable lifting device to remove cover (2) .
48. Use a micrometer to measure the thickness of the solder. Record this measurement in order
to determine the thickness of the shims for plate (6) . Adjust the shims in order to obtain a
clearance of 1.000 + 1.000 mm (0.0394 + 0.0394 inch) between plate (6) and gear (8) .
49. Apply Tooling (H) to the mating surfaces of cover (2) and the housing.
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50. Use Tooling (A) and a suitable lifting device to Install cover (2) .
51. Install bolts (1) . Tighten bolts (1) to a torque of 900 ± 100 N·m (664 ± 74 lb ft).
52. Remove the plug (not shown) from cover (2) . Attach Tooling (J) to cover (2) . Reduce the
air pressure at the source to 103 kPa (15 psi). Apply air pressure to Tooling (J) . This air
will test the Duo-Cone seals.
53. Use the ball valve on Tooling (J) to eliminate the air pressure to the final drive. A pressure
of 98 kPa (14.2 psi) must be maintained for 30 seconds.
54. Remove Tooling (J) . Install the plug . Torque the plug to 80 ± 10 N·m (59 ± 7 lb ft).
End By: Install the final drive and the travel motor.
(Type 1) Assembly Procedure
Table 2
Required Tools
A 439-3940 Link Brackets 3
B 154-6183 Forcing Bolts 3
C 439-3941 Link Brackets 3
D - Loctite C5A Copper Anti-Seize -
E 1U-9895 Crossblock 1
F 6V-2012 Depth Micrometer 1
G 6V-7059 Micrometer 1
H - Loctite 243 -
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J 6V-2055 Grease -
K - Loctite RTV Clear Silicone -
L 8T-9206 Seal Installer 1
1. Apply Tooling (D) to the surface of dowels (46) . Install dowels (46) .
2. Raise the temperature of roller bearing (47) . Install the roller bearing (47) on motor housing
(48) .
3. Install Duo-Cone seal (45) .
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4. Lower the temperature of bearing races (43) . Install bearing races (43) in sprocket housing
(41) .
5. Install Duo-Cone seal (44) .
6. Attach Tooling (C) and a suitable lifting device to sprocket housing (41) . The weight of
sprocket housing (41) is approximately 107 kg (235 lb). Install sprocket housing (41) .
7. Raise the temperature of roller bearing (42) . Install the roller bearing (42) .
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8. Use Tooling (E) and a suitable press in order to apply force to roller bearing (42) . Apply a
force of 4000 kg (8818 lb) to the top of Tooling (E) . Rotate sprocket housing (41) in order
to seat the roller bearings.
9. Reduce the force on top of Tooling (E) to 3000 ± 300 kg (6614 ± 661 lb). Use Tooling (F)
in order to measure Dimension (X) . Record Dimension (X) .
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10. Use Tooling (F) in order to measure Dimension (W) on gear (39) . Record Dimension (W) .
11. Remove Tooling (E) .
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12. Subtract Dimension (X) from Dimension (W) and record the difference as Dimension (V) .
The correct shim thickness is Dimension (V) . Use Tooling (G) in order to measure the
correct thickness of shims (40) . The tolerance of Dimension (V) is 0 ± 0.05 mm (0 ± 0.002
inch).
Note: Use a maximum of two shims (40) . If two shims (40) are used to achieve the proper
dimension, install the thinner of the two shims toward gear (39) .
13. Install shims (40) .
14. Apply Tooling (G) to the threads of bolts (38) . Install gear (39) and bolts (38) . Tighten
bolts (38) to a torque of 900 ± 100 N·m (665 ± 75 lb ft).
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Note: Make sure that the spring pin hole in planetary shaft (32) is aligned with the spring
pin hole in the carrier.
15. Install roller bearings (35) , planetary gear (36) , washer (37) , washer (33) , planetary shaft
(32) , and spring pin (31) into carrier assembly (34) . Install spring pin (31) until spring pin
(31) is even with the outside surface of the carrier. Align the split in spring pin (31) to the
top or the bottom.
16. Make a stake mark on each side of the spring pin hole in the carrier, as shown. The stake
mark will prevent the spring pin from falling out of the spring pin hole. Make a stake mark
at Dimension (Y) . Dimension (Y) is 2.25 ± 0.75 mm (0.089 ± 0.030 inch).
17. Attach Tooling (A) and a suitable lifting device to planetary gear assembly (30) . The
weight of planetary gear assembly (30) is approximately 57 kg (125 lb). Install planetary
gear assembly (30) .
18. Install O-ring seal (29) .
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19. Attach Tooling (A) and a suitable lifting device to ring gear (27) . The weight of ring gear
(27) is approximately 70 kg (155 lb). Install ring gear (27) and bolts (28) . Tighten bolts
(28) to a torque of 520 ± 70 N·m (385 ± 52 lb ft).
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21. Install roller bearing (22) , planetary gear (23) , washer (24) , washer (20) , planetary shaft
(18) , and spring pin (17) into carrier assembly (21) . Install spring pin (17) until spring pin
(17) is even with the outside surface of the carrier. Align the split in spring pin (17) to the
top or the bottom.
22. Make a stake mark on each side of the spring pin hole in the carrier, as shown. The stake
mark will prevent the spring pin from falling out of the spring pin hole. Make a stake mark
at Dimension (Y) . Dimension (Y) is 2.25 ± 0.75 mm (0.089 ± 0.030 inch).
24. Attach Tooling (A) and a suitable lifting device to planetary gear assembly (15) . The
weight of planetary gear assembly (15) is approximately 32 kg (70 lb). Install planetary gear
assembly (15) .
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27. Install washer (12) , roller bearing (11) , planetary gear (9) , washer (8) , and retaining ring
(7) on carrier assembly (13) .
28. Install planetary gear assembly (6) , spacer (5) , and sun gear (4) .
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29. Use the correct plate (3) in order to achieve Dimension (Z) . Dimension (Z) is 1.00 to 2.00
mm (0.039 ± 0.079 inch).
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30. Use Tooling (J) in order to secure plate (3) in cover (2) .
31. Apply Tooling (K) to the mating surface of cover (1) . Attach Tooling (A) and a suitable
lifting device to cover (2) . The weight of cover (2) is approximately 20 kg (45 lb). Install
cover (2) and bolts (1) . Tighten bolts (1) to a torque of 105 ± 20 N·m (80 ± 15 lb ft).
32. Remove Tooling (A) and the suitable lifting device. Apply Tooling (H) to the threads of the
set screws. Install the set screws so that the setscrews are flush with cover (1) .
End By: Install the final drive and the travel motor.
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Product: EXCAVATOR
Model: 336D L EXCAVATOR PRF
Configuration: 336D & 336D L Excavators PRF00001-UP (MACHINE) POWERED BY C9 Engine
Disassembly and Assembly
330D, 336D, 336D2, 340D and 340D2 Excavators and 336D MHPU Mobile Hydraulic
Power Unit Machine Systems
Media Number -RENR8648-30 Publication Date -01/03/2015 Date Updated -15/08/2018
i02451126
Final Drive and Travel Motor - Remove
SMCS - 4050-011; 4351-011
Removal Procedure
Table 1
Required Tools
A
5P-0306 Vacuum Transducer 1
FT-1115 Vacuum Cap 1
6V-4142 Fitting 1
5K-5068 Fitting 1
B 1U-9200 Lever Puller Hoist 1
C 138-7573 Link Bracket 1
Note: Put identification marks on all hose assemblies, fittings and ports so that all the components
can be reassembled in the original configuration. Plug all of the hose assemblies and cap all of the
fittings. This helps to prevent fluid loss and this helps to keep contaminants from entering the
system.
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
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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.
NOTICE
Keep all parts clean from contaminants.
Contaminants may cause rapid wear and shortened component life.
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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1. Remove bolts (1) and cover (2).
2. Separate the track. Refer to Disassembly and Assembly, "Track - Seperate".
3. Remove the cap from the hydraulic tank. Install Tooling (A) onto the hydraulic tank. Attach
an air supply hose to Tooling (A). Apply 276 to 414 kPa (40 to 60 psi) of air. This
procedure will pull vacuum on the hydraulic system.
4. Disconnect hose assemblies (3) and remove fitting (4).
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Caterpillar cat 336 d l excavator (prefix prf) service repair manual (prf00001 and up)

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