Caterpillar cat 329 el excavator (prefix plw) service repair manual (plw00001 and up)

Service Repair Manual
Models
329E L EXCAVATOR

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Product: EXCAVATOR
Model: 329E L EXCAVATOR PLW
Configuration: 329E L Excavator PLW00001-UP (MACHINE) POWERED BY C7.1 Engine
Disassembly and Assembly
C7.1 Engines for Caterpillar Built Machines
Media Number -KENR8881-05 Publication Date -01/11/2012 Date Updated -10/05/2016
i03933951
Crankshaft - Remove
SMCS - 1202-011
Removal Procedure
Table 1
Required Tools
Tool Part Number Part Description Qty
A 1U-8221 Lifting Sling 2
Start By:
a. Remove the engine oil pump. Refer to Disassembly and Assembly, "Engine Oil Pump -
Remove" for the correct procedure.
b. Remove the front housing. Refer to Disassembly and Assembly, "Housing (Front) -
c. Remove the crankshaft rear seal. Refer to Disassembly and Assembly, "Crankshaft Rear
Seal - Remove" for the correct procedure.
d. If necessary, remove the cylinder head. Refer to Disassembly and Assembly, "Cylinder
Head - Remove" for the correct procedure.
e. If necessary, remove the pistons and connecting rods. Refer to Disassembly and Assembly,
"Pistons and Connecting Rods - Remove" for the correct procedure.
NOTICE
Keep all parts clean from contaminants.
Contaminants may cause rapid wear and shortened component life.
1/6329E L Excavator PLW00001-UP (MACHINE) POWERED BY C7.1 Engine(SEBP5...
2020/3/9https://127.0.0.1/sisweb/sisweb/techdoc/techdoc_print_page.jsp?returnurl=/sisw...

1. The engine should be mounted on a suitable stand and placed in the inverted position.
2. If the cylinder head, the pistons and the connecting rods have not been removed already,
remove the connecting rod bearings. Refer to Disassembly and Assembly, "Connecting Rod
Bearings - Remove" for the correct procedure.
3. Ensure that the main bearing caps are marked for the location and orientation.
Illustration 1 g02204377
4. Remove bolts (3) from tube assembly (2).
5. Remove tube assembly (2) from the cylinder block.
6. Remove gaskets (1) (not shown).

7. Remove bolts (4) and main bearing caps (5) from the cylinder block.
8. Remove lower main bearing shells (6) from main bearing caps (5). Keep the lower main
bearing shells with the respective main bearing caps.

Note: The lower main bearing shells are plain bearings that have no oil holes.
9. For number six main bearing, remove two thrust washers (7) from the cylinder block. In
order to remove thrust washers (7), rotate the crankshaft in the correct direction. If
necessary, push the crankshaft toward the front of the engine while you rotate the
crankshaft, in order to aid removal. If necessary, push the crankshaft toward the rear of the
engine while you rotate the crankshaft, in order to aid removal.
Note: The thrust washers have a locating tab at one end.

10. Attach Tooling (A) and a suitable lifting device to crankshaft (8). Lift crankshaft (8) out of
the cylinder block. The weight of the crankshaft is approximately 61 kg (134 lb).
Note: Do not damage any of the finished surfaces on the crankshaft. When the crankshaft is
removed from the engine, the crankshaft must be supported on a suitable stand in order to
prevent damage to the crankshaft timing ring.

11. Remove upper main bearing shells (9) from the cylinder block. Keep the upper main
bearing shells with the respective main bearing caps.
Note: The upper main bearing shells have a groove and two oil holes.
12. If necessary, remove the crankshaft timing ring. Refer to Disassembly and Assembly,
"Crankshaft Timing Ring - Remove and Install" for the correct procedure.
13. If necessary, remove the crankshaft gear. Refer to Disassembly and Assembly, "Crankshaft
Gear - Remove and Install" for the correct procedure.
Copyright 1993 - 2020 Caterpillar Inc.
All Rights Reserved.
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Mon Mar 9 02:34:32 UTC+0800 2020

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Product: EXCAVATOR
i03933950
Crankshaft - Install
SMCS - 1202-012
Installation Procedure
Table 1
Required Tools
A 1U-8221 Lifting Sling 2
B 8T-3052 Degree Wheel 1
C 8T-5096 Dial Indicator Gp 1
NOTICE
1. Clean the crankshaft and inspect the crankshaft for wear and damage. Refer to
Specifications, "Crankshaft" for more information. If necessary, replace the crankshaft or
recondition the crankshaft.
2. If necessary, install the crankshaft gear. Refer to Disassembly and Assembly, "Crankshaft
Gear - Remove and Install" for the correct procedure.
3. If necessary, install a new crankshaft timing ring. Refer to Disassembly and Assembly,
"Crankshaft Timing Ring - Remove and Install" for the correct procedure.

4. Ensure that parent bores for bearing shells in the cylinder block are clean. Ensure that the
threads for the main bearing bolts in the cylinder block are clean and free from damage.
5. Clean the main bearing shells and the thrust washers. Inspect the main bearing shells and the
thrust washers for wear and damage. If necessary, replace the main bearing shells and the
thrust washers.
Note: If the main bearing shells are replaced, check whether oversize main bearing shells
were previously installed. If the thrust washers are replaced, check whether oversize thrust
washers were previously installed.
6. Install upper main bearing shells (9) to the cylinder block. Ensure that the locating tabs for
the upper main bearing shells are seated in the slots in the cylinder block.
Note: The upper main bearing shells have a groove and two oil holes.
7. Lubricate upper main bearing shells (9) with clean engine oil.

8. Attach Tooling (A) and a suitable lifting device to crankshaft (8). Lift crankshaft (8) into the
cylinder block. The weight of the crankshaft is approximately 61 kg (134 lb).
Note: Do not damage any of the finished surfaces on the crankshaft. Do not damage the
main bearing shells.

9. Lubricate thrust washers (7) with clean engine oil. Install thrust washers (7) into number six
main bearing in the cylinder block.
Note: The grooves in the thrust washers must be located against the crankshaft. The thrust
washers have a locating tab at one end. Ensure that the locating tabs are correctly seated in
the cylinder block.

10. Install lower main bearing shells (6) into main bearing caps (5). Ensure that the locating tabs
for the lower main bearing shells are correctly seated into the slots in the bearing caps.
Note: The lower main bearing shells are plain bearings that do not have oil holes.
11. Lubricate lower main bearing shells (6) and lubricate the journals of the crankshaft with
clean engine oil. Install main bearing caps (5) to the cylinder block.
Note: Ensure the correct location and orientation of main bearing caps (5). The locating tabs
for the upper and the lower main bearing shells should be on the same side of the engine.
12. Lubricate the threads of bolts (4) with clean engine oil. Lubricate the underside of the heads
of bolts (4) with clean engine oil.
13. Install bolts (4) to main bearing caps (5). Evenly tighten the bolts in order to pull the caps
into position. Ensure that the caps are correctly seated.
Note: Do not tap the main bearing caps into position as the bearing shells may be dislodged.
14. Tighten bolts (4) to a torque of 80 N·m (59 lb ft).

Turn bolts (4) through an additional 90 degrees. Use Tooling (B) to achieve the final torque.
15. Rotate the crankshaft in order to ensure that there is no binding.
16. Check the crankshaft end play. Push the crankshaft toward the front of the engine. Install
Tooling (C) to the cylinder block and the rear face of the crankshaft. Push the crankshaft
toward the rear of the engine. Use Tooling (C) to measure the crankshaft end play. The
permissible crankshaft end play is 0.10 mm (0.004 inch) to 0.41 mm (0.016 inch).

17. Position new gaskets (1) (not shown) onto cylinder block.
18. Position tube assembly (2) onto the cylinder block.
19. Install bolts (3) to tube assembly (2).
20. Tighten bolts (3) to a torque of 22 N·m (195 lb in).
21. If the crankshaft has not been replaced or the crankshaft has not been reconditioned, install
the connecting rod bearings. Refer to Disassembly and Assembly, "Connecting Rod
Bearings - Install" for the correct procedure.
End By:
a. If necessary, install the pistons and connecting rods. Refer to Disassembly and Assembly,
"Pistons and Connecting Rods - Install" for the correct procedure.
b. If necessary, install the cylinder head. Refer to Disassembly and Assembly, "Cylinder head -
Install" for the correct procedure.
c. Install the crankshaft rear seal. Refer to Disassembly and Assembly, "Crankshaft Rear Seal -
d. Install the front housing. Refer to Disassembly and Assembly, "Housing (Front) - Install"
for the correct procedure.

e. Install the engine oil pump. Refer to Disassembly and Assembly, "Engine Oil Pump -
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Mon Mar 9 02:35:28 UTC+0800 2020

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Product: EXCAVATOR
i03934059
Crankshaft Timing Ring - Remove and Install
SMCS - 1202
Removal Procedure
Start By:
a. Remove the crankshaft. Refer to Disassembly and Assembly, "Crankshaft - Remove " for
the correct procedure.
NOTICE

1. Support crankshaft (1) on a suitable stand.
2. Remove allen head screws (2) from crankshaft timing ring (3). Do not reuse the allen head
screws.
3. Carefully remove crankshaft timing ring (3) from crankshaft (1). Do not reuse the
crankshaft timing ring.
Note: Ensure that seal surface (4) of the crankshaft is not damaged when the crankshaft
timing ring is removed.
Note: Do not remove dowel (5) from crankshaft (1) unless the dowel is damaged.
NOTICE

1. Ensure that the flange for the crankshaft timing ring on the crankshaft is clean and free from
damage.
2. Support crankshaft (1) on a suitable stand.
3. If dowel (5) was removed, install a new dowel to crankshaft (1).
4. Position new crankshaft timing ring (3) on the crankshaft with the teeth toward the
crankshaft web. Align the hole in crankshaft timing ring (3) with dowel (5) in the
crankshaft. Carefully install crankshaft timing ring (3) to crankshaft (1).
Note: Ensure that seal surface (4) on the crankshaft is not damaged when the crankshaft
timing ring is installed.
5. Install new allen head screws (2). Tighten the allen head screws to a torque of 9 N·m
(80 lb in).
End By:
a. Install the crankshaft. Refer to Disassembly and Assembly, "Crankshaft - Install " for the
correct procedure.
Mon Mar 9 02:36:25 UTC+0800 2020

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Product: EXCAVATOR
i03933954
Crankshaft Gear - Remove and Install
SMCS - 1204-010-GE
Removal Procedure
Table 1
Required Tools
A
8H-0663 Bearing Puller 1
5F-7345 Screw 1
126-7183 Crossblock 1
126-7177 Puller Leg 2
Start By:
a. Remove the front housing. Refer to Disassembly and Assembly, "Housing (Front) -
b. Remove the engine oil pump. Refer to Disassembly and Assembly, "Engine Oil Pump -
NOTICE

1. Use Tooling (A) in order to remove crankshaft gear (4) from crankshaft (2).
2. If necessary, remove key (1) and remove friction shim (3) from crankshaft (2).
Note: Do not remove the key from the crankshaft unless the key is damaged.
NOTICE
1. Ensure that all components are clean and free from wear and damage. If necessary, replace
any components that are worn or damaged.

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2. If necessary, install a new friction shim (3) to crankshaft (2).
3. If necessary, install a new key (1) to crankshaft (2).
Hot parts or hot components can cause burns or personal injury. Do not
allow hot parts or components to contact your skin. Use protective
clothing or protective equipment to protect your skin.
4. Heat crankshaft gear (4) in an oven to 150° ± 50°C (302° ± 90°F). Align the keyway on
crankshaft gear (4) with key (1) in the crankshaft. Install crankshaft gear (4) to crankshaft
(2). Ensure that shoulder (5) of crankshaft gear (4) is toward the front of the engine.
End By:
a. Install the front housing. Refer to Disassembly and Assembly, "Housing (Front) - Install"
for the correct procedure.
b. Install the engine oil pump. Refer to Disassembly and Assembly, "Engine Oil Pump -

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Product: EXCAVATOR
i05977048
Bearing Clearance - Check
SMCS - 1203-535; 1219-535
Measurement Procedure
Table 1
Required Tools
A
198-9142
Plastic Gauge (Green)
0.025 to 0.076 mm
(0.001 to 0.003 inch)
1
198-9143
Plastic Gauge (Red)
0.051 to 0.152 mm
(0.002 to 0.006 inch)
1
198-9144
Plastic Gauge (Blue)
0.102 to 0.229 mm
(0.004 to 0.009 inch)
1
198-9145
Plastic Gauge (Yellow)
0.230 to 0.510 mm
(0.009 to 0.020 inch)
1
Note: Plastic gauge may not be necessary when the engine is in the chassis.
NOTICE

Note: Cat does not recommend the checking of the actual bearing clearances particularly on small
engines. This is because of the possibility of obtaining inaccurate results and the possibility of
damaging the bearing or the journal surfaces. Each Cat engine bearing is quality checked for
specific wall thickness.
Note: The measurements should be within specifications and the correct bearings should be used.
If the crankshaft journals and the bores for the block and the rods were measured during
disassembly, no further checks are necessary. However, if the technician still wants to measure the
bearing clearances, Tooling (A) is an acceptable method. Tooling (A) is less accurate on journals
with small diameters if clearances are less than 0.10 mm (0.004 inch).
NOTICE
Lead wire, shim stock or a dial bore gauge can damage the bearing
surfaces.
The technician must be very careful to use Tooling (A) correctly. The following points must be
remembered:
• Ensure that the backs of the bearings and the bores are clean and dry.
• Ensure that the bearing locking tabs are properly seated in the tab grooves.
• The crankshaft must be free of oil at the contact points of Tooling (A).
1. Put a piece of Tooling (A) on the crown of the bearing that is in the cap.
Note: Do not allow Tooling (A) to extend over the edge of the bearing.
2. Use the correct torque-turn specifications in order to install the bearing cap. Do not use an
impact wrench. Be careful not to dislodge the bearing when the cap is installed.
Note: Do not turn the crankshaft when Tooling (A) is installed.
3. Carefully remove the cap, but do not remove Tooling (A). Measure the width of Tooling
(A) while Tooling (A) is in the bearing cap or on the crankshaft journal. Refer to Illustration
1.

Caterpillar cat 329 el excavator (prefix plw) service repair manual (plw00001 and up)

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