Caterpillar Cat 424D Backhoe Loader (Prefix RXA) Service Repair Manual (RXA00001 and up).pdf

Service Repair Manual
Models
424D Backhoe Loader

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Product: BACKHOE LOADER
Model: 424D BACKHOE LOADER RXA
Configuration: 424D Backhoe Loader RXA00001-UP (MACHINE) POWERED BY 3054C Engine
Disassembly and Assembly
3054C Engines for Caterpillar Built Machines
Media Number -SENR5069-18 Publication Date -01/05/2015 Date Updated -19/09/2018
i02299758
Camshaft Bearings - Remove and Install
SMCS - 1211-010
Removal Procedure
Table 1
Required Tools
Tool Part Number Part Description Qty
A
8S-2241 Camshaft Bearing Tool Group 1
8H-0684 Ratchet Wrench 1
Start By:
a. Remove the camshaft. Refer to Disassembly and Assembly, "Camshaft - Remove and
Install".
NOTICE
Keep all parts clean from contaminants.
Contaminants may cause rapid wear and shortened component life.
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424D Backhoe Loader RXA00001-UP (MACHINE) POWERED BY 3054C Engine(S...
2019/12/6
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Illustration 1 g00546333
1. Use the Tooling (A) in order to remove the camshaft bearing (1) from the cylinder block.
Installation Procedure
Table 2
Required Tools
A
8S-2241 Camshaft Bearing Tool Group 1
8H-0684 Ratchet Wrench 1
NOTICE
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1. Use the Tooling (A) in order to install the camshaft bearing (1) into the bore in the cylinder
block.
Note: Align the oil hole in camshaft bearing (1) with the oil hole in the bore in the cylinder
block.
Note: The camshaft bearing must be inserted until the front edge of the bearing is flush with
the face of the recess in the cylinder block.
End By:
a. Install the camshaft. Refer to Disassembly and Assembly, "Camshaft - Remove and Install".
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Fri Dec 6 16:34:10 UTC+0800 2019
3/3
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i05003149
Engine Oil Pan - Remove and Install
SMCS - 1302-010
Removal Procedure
NOTICE
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.
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1. Remove all dirt, oil, and grease from the exterior surfaces of the oil pan (5).
2. Operate the engine until the engine is warm. Stop the engine.
3. Remove the oil drain plug (6) and the O-ring seal. Drain the engine oil into a suitable
container for storage or disposal.
Note: Refer to the Operation and Maintenance Manual, "Refill Capacities" for information
on the capacity of the lubrication system.
Note: Ensure that the engine oil pan is fully supported before the oil pan is removed.
Particular care must be taken with the cast iron version of the engine oil sump as this
version is heavy.
4. Remove the setscrews (3) and the setscrews (4) from the engine oil pan (5).
5. Remove the engine oil pan (5) and remove the gasket (1) from the cylinder block. Discard
the gasket (1).
6. If necessary, remove the nut (2), the seal, and the tube assembly from the engine oil pan.
7. Clean the engine oil pan (5) with a suitable cleaning fluid. Ensure that all of the cleaning
fluid is removed.
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Table 1
Required Tools
A -
Guide Bolt
(M8 x 1.25 x 70 mm)
4
B - Loctite 5900 -
C - Loctite 243 -
NOTICE
1. Clean the flange face of the engine oil pan (5) and the flange face of the cylinder block.
2. When the gasket for the oil pan is removed, damage may occur to the existing seal in the
groove of the bridge. If the seal is damaged, apply a sufficient amount of Tooling (B) in
order to fill the groove. The groove must be completely filled.
3. Apply Tooling (B) to the joint between the cylinder block and the front housing.
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4. Install Tooling (A) in the cylinder block in Hole (X).
Note: New setscrews have sealant on the first 13 mm (0.5 inch) of the threads. In order to
reuse the old setscrews, clean the old sealant from the bolts and apply Tooling (C) to the
setscrews.
Note: Ensure that the engine oil pan is properly supported while the engine oil pan (5) is
installed onto the cylinder block.
5. Position a new gasket (1) and the engine oil pan (5) on the cylinder block. Install the
setscrews (3 and 4) in order to secure the engine oil pan to the cylinder block. Tighten the
setscrews finger tight.
6. Remove the Tooling (A) and install the remaining setscrews (3 an 4). Tighten the setscrews
(3) in Hole (Y) to a torque of 22 N·m (16 lb ft).
7. Tighten the remaining setscrews (3 and 4) to a torque of 22 N·m (16 lb ft).
8. Inspect the O-ring for the drain plug (6). Replace the O-ring if it is necessary. Install the O-
ring seal and drain plug (6). Tighten the drain plug to a torque of 34 N·m (25 lb ft).
9. If necessary, install the seal and the tube assembly in the engine oil pan. Tighten the nut (2)
to a torque of 18 N·m (13 lb ft).
10. Fill the engine oil pan to the correct level that is indicated on the engine oil level gauge.
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Note: Refer to the Operation and Maintenance Manual, "Refill Capacities" for the
lubrication system capacity of the engine.
Fri Dec 6 16:35:06 UTC+0800 2019
5/5
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i02300831
Piston Cooling Jets - Remove and Install
SMCS - 1331-010
Removal Procedure
Start By:
a. Remove the engine oil pan. Refer to Disassembly and Assembly, "Engine Oil Pan - Remove
and Install".
NOTICE
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1. Remove the setscrew (1). Remove the piston cooling jet assembly (2) from the cylinder
block.
Note: The engine crankshaft may be rotated in order to access all of the piston cooling jet
assemblies.
Note: Ensure that the ball moves freely within the valve assembly of the piston cooling jet.
Check that the tube of the piston cooling jet assembly is not damaged.
NOTICE
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1. Install piston cooling jet assembly (2) to the cylinder block. Install the setscrew (1). Tighten
the setscrew (1) to a torque of 9 N·m (80 lb in).
Note: Ensure that piston cooling jet assembly (2) is properly located on the cylinder block.
Refer to the Specifications Manual, "Piston Cooling Jet" for the correct procedure for the
alignment of the piston cooling jet.
End By:
a. Install the engine oil pan. Refer to Disassembly and Assembly, "Engine Oil Pan - Remove
and Install".
Fri Dec 6 16:36:02 UTC+0800 2019
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i02301207
Pistons and Connecting Rods - Remove
SMCS - 1225-011
Removal Procedure
Table 1
Required Tools
A 8S-2269 Ridge Reamer 1
Start By:
a. Remove the cylinder head. Refer to Disassembly and Assembly, "Cylinder Head -
Remove".
b. Remove the engine oil pan. Refer to Disassembly and Assembly, "Engine Oil Pan - Remove
and Install".
c. Remove the engine oil pump. Refer to Disassembly and Assembly, "Engine Oil Pump -
Remove".
d. Remove the piston cooling jets. Refer to Disassembly and Assembly, "Piston Cooling Jets -
Remove and Install".
NOTICE
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1. Use Tooling (A) in order to remove the carbon ridge from the top inside surface of the
cylinder liners.
2. Rotate the crankshaft until the pistons that are being removed are at the bottom center
position.
3. Remove the setscrews (1).
Note: Do not reuse the setscrews (1). Use new setscrews in order to secure the connecting
rod cap for reassembly.
4. Remove the connecting rod cap (2) and the connecting rod bearing.
Note: Inspect the connecting rod and connecting rod cap for the proper identification mark.
The connecting rod and the connecting rod cap should have an etched number on the side.
The number should match the cylinder number. Mark the connecting rod and the connecting
rod cap, if necessary.
Note: Do not stamp the connecting rod assembly. Stamping or punching the connecting rod
assembly could cause the connecting rod to fracture.
5. Put a temporary identification mark on the top of the piston in order to indicate the cylinder
number that is shown on the connecting rod. Put the temporary mark on the same side as the
mark that is on the connecting rods in order to ensure correct assembly of the piston and the
connecting rod.
Note: Do not etch the top surface of the piston. Do not allow scratches or stamped markings
in the top surface of the piston.
6. Push the pistons and the connecting rods through the top of the cylinder block.
7. Repeat Steps 2 through 6 in order to remove the remaining pistons and connecting rods.
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i01880507
Pistons and Connecting Rods - Disassemble
SMCS - 1225-015
Disassembly Procedure
Table 1
Required Tools
A 1U-6683 Ring Expander 1
B 1P-1857 Retaining Ring Pliers 1
C 1P-0510 Driver Group 1
Start By:
a. Remove the pistons and the connecting rods. Refer to Disassembly and Assembly, "Piston
and Connecting Rods - Remove".
NOTICE
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1. Remove the lower connecting rod bearing from the connecting rod cap. Remove the upper
connecting rod bearing from the connecting rod.
Note: The forged marks (X) must be installed toward the front of the engine.
2. Use Tooling (A) in order to remove compression rings (1) and (2), and oil control ring (3)
from piston (6).
3. Use Tooling (B) in order to remove retaining rings (8) that hold the piston pin in position.
4. Remove piston pin (7) from the piston.
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Note: If the piston pin cannot be removed by hand, heat the piston to a temperature of
45 ± 5 °C (113 ± 9 °F). Do not use a torch to heat the piston.
5. Use Tooling (C) and a suitable press in order to remove bushing (4) from connecting rod
(5).
6. Repeat Steps 1 through 5 in order to disassemble the remaining pistons and connecting rods.
Fri Dec 6 16:37:54 UTC+0800 2019
3/3
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i07489015
Pistons and Connecting Rods - Assemble
SMCS - 1225-016
Assembly Procedure
Table 1
Required Tools
A 1P-1857 Retaining Ring Pliers 1
B 1U-6683 Ring Expander 1
NOTICE
NOTICE
Installation of the piston pin bushing must be carried out by personnel
with the correct training. Also special machinery is required.
Note: A new piston pin bushing is in a shape of a wedge. For further information on installation of
the piston pin bushing, refer to your authorized Caterpillar dealer or your Caterpillar distributor
for assistance.
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Caterpillar Cat 424D Backhoe Loader (Prefix RXA) Service Repair Manual (RXA00001 and up).pdf

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