Caterpillar Cat 268B SKID STEER LOADER (Prefix LBA) Service Repair Manual (LBA00001 and up).pdf

Service Repair Manual
Models
268B SKID STEER LOADER

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Product: SKID STEER LOADER
Model: 268B SKID STEER LOADER LBA
Configuration: 248B 268B SKID STEER LOADER LBA00001-UP (MACHINE) POWERED BY 3044C Engine
Disassembly and Assembly
3044C Industrial Engine and Engines for Caterpillar Built Machines
Media Number -RENR7582-07 Publication Date -01/01/2010 Date Updated -26/02/2010
i02000757
Fuel Injection Pump - Remove
SMCS - 1251-011
Removal Procedure
Table 1
Required Tools
Tool Part Number Part Description Qty
A 1P-2320 Combination Puller 1
Start By:
A. Remove the fuel injection lines. Refer to Disassembly and Assembly, "Fuel Injection Lines
- Remove and Install".
NOTICE
Keep all parts clean from contaminants.
Contaminants may cause rapid wear and shortened component life.
1. Ensure that the No. 1 cylinder is at the top center compression stroke. Refer to Testing and
Adjusting, "Finding Top Center Position for No. 1 Piston".
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248B 268B SKID STEER LOADER LBA00001-UP (MACHINE) POWERED BY 30...
2019/11/14
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Illustration 1 g01035206
2. Remove bolts (2). Remove cover (1) and O-ring seal (3) .
3. Mark gear teeth (4) for timing purposes.
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4. Remove bolt (6). Remove fuel injection pump (5) .
5. Remove O-ring seal (7). Remove the bolt and bracket (8). Remove nut (9) from gear (10) .
6. Use Tooling (A) to remove gear (10). Mark housing (11) and fuel injection pump (5) for
installation purposes. Remove bolts (12) and housing (11) .
Copyright 1993 - 2019 Caterpillar Inc.
All Rights Reserved.
Private Network For SIS Licensees.
Thu Nov 14 22:53:58 UTC+0800 2019
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i02000821
Fuel Injection Pump - Install
SMCS - 1251-012
Installation Procedure
NOTICE
1. Clean all mating surfaces. Position housing (11) on fuel injection pump (5). Ensure that the
mark is in the proper position. Install bolts (12) .
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2. Install gear (10). Install nut (9). Tighten nut (9) to a torque of 83 to 98 N·m (61 to 72 lb ft).
Install the bolt and bracket (8). Install O-ring seal (7) .
3. Position fuel injection pump (5) and install bolt (6) .
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4. Ensure that timing marks on teeth (4) are in the correct position.
5. Install O-ring seal (3) and cover (1). Install bolts (2) .
6. Check the fuel injection timing. Refer to Testing and Adjusting, "Fuel Injection Timing -
Check - Distributor Pump".
End By: Install the fuel injection lines. Refer to Disassembly and Assembly, "Fuel Injection Lines
- Remove and Install".
Thu Nov 14 22:54:58 UTC+0800 2019
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i02001252
Turbocharger - Remove
SMCS - 1052-011
Removal Procedure
Table 1
Required Tools
ZZ
9U-7089 Tapered Cap/Plug 1
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
NOTICE
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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, "Caterpillar Tools and Shop
Products Guide" for tools and supplies suitable to collect and contain
fluids on Caterpillar products.
Dispose of all fluids according to local regulations and mandates.
1. Remove bolt (1). Remove bolts (2). Disconnect tube assembly (3) and remove gasket (4) .
2. Remove bolts (9). Disconnect elbow assembly (10) and remove gasket (8). Remove nuts
(6). Remove turbocharger (5) and gasket (7) .
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i02001310
Turbocharger - Install
SMCS - 1052-012
Table 1
Required Tools
A 5P-3931 Anti-Seize Compound -
NOTICE
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1. Install gasket (7) and position turbocharger (5). Apply Tooling (A) to nuts (6). Install nuts
(6). Install gasket (8) and connect elbow assembly (10). Install bolts (9) .
2. Install gasket (4) and connect tube assembly (3). Install bolts (2). Install bolt (1) .
Thu Nov 14 22:56:56 UTC+0800 2019
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i02003443
Exhaust Manifold - Remove and Install
SMCS - 1059-010
Removal Procedure
Start By:
A. Remove the turbocharger, if equipped. Refer to Disassembly and Assembly, "Turbocharger
- Remove".
Hot engine components can cause injury from burns. Before
performing maintenance on the engine, allow the engine and the
components to cool.
NOTICE
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1. Remove bolts (1). Remove exhaust manifold (3) and gasket (2) .
NOTICE
1. Install gasket (2) and exhaust manifold (3). Install bolts (1). Tighten the bolts, beginning at
the center of the exhaust manifold and working toward the ends, to the following torque:
Naturally aspirated engines ... 15 to 22 N·m (11 to 16 lb ft)
Turbocharged engines ... 28 to 33 N·m (21 to 24 lb ft)
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End By: Install the turbocharger, if equipped. Refer to Disassembly and Assembly, "Turbocharger
- Install".
Thu Nov 14 22:57:56 UTC+0800 2019
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i02001104
Inlet Manifold - Remove
SMCS - 1058-011
Removal Procedure
Table 1
Required Tools
ZZ
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
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1. Remove bolts (6) and position crankcase breather (8) out of the way. Loosen clamp (7) and
disconnect the hose assembly. Remove bolts (4) and (5). Remove bolts (1). Remove inlet
manifold (2) and gasket (3) .
2. Remove bolt (9) and bracket (10). Remove bolts (11). Remove elbow assembly (12) and
gasket (13) .
Thu Nov 14 22:58:55 UTC+0800 2019
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i02001241
Inlet Manifold - Install
SMCS - 1058-012
NOTICE
1. Install gasket (13) and elbow assembly (12). Install bolts (11). Install bracket (10) and bolt
(9) .
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2. Install gasket (3) and position inlet manifold (2). Install bolts (1). Install bolts (4) and (5).
Connect the hose assembly and tighten clamp (7). Position crankcase breather (8) and install
bolts (6) .
Thu Nov 14 22:59:54 UTC+0800 2019
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i02000605
Inlet and Exhaust Valve Springs - Remove and Install
SMCS - 1108-010
Removal Procedure
Table 1
Required Tools
A 9U-6145 Air Connector (1)
1
B
- Rod (M12 X 1.75 by 380 mm) 1
9U-6144 Adapter As 1
6V-8149 Nut 1
5P-8245 Hard Washer 13
C
4C-8134 Seal Remover 1
1U-7600 Slide Hammer Puller Gp 1
D 8S-2263 Spring Tester 1
( 1 )
The 9U-6145 Air Connector is part of the 9U-6274 Compression Test Tool Gp. The 9U-6145 Air Connector can
be ordered separately.
Start By:
A. Remove the rocker shaft assembly. Refer to Disassembly and Assembly, "Rocker Shaft and
Pushrod - Remove".
B. Remove the fuel injection nozzles. Refer to Disassembly and Assembly, "Fuel Injection
Nozzles - Remove".
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NOTICE
1. Install Tooling (A). Install the bolt and bracket (2). Remove bolt (1) .
Note: Maintain air pressure in the cylinder that is being serviced until both of the valve
springs are removed and installed.
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Personal injury can result from being struck by parts propelled by a
released spring force.
Make sure to wear all necessary protective equipment.
Follow the recommended procedure and use all recommended tooling to
release the spring force.
NOTICE
Ensure that the valve spring is compressed squarely or damage to the
valve stem may occur.
2. Install Tooling (B). Use Tooling (B) to compress valve spring (3). Remove cap (4) and
retainers (5) .
3. Release the pressure from Tooling (B) and remove Tooling (B). Remove retainer (6) .
4. If necessary, use Tooling (C) to remove seal (7) .
5. Use Tooling (D) to check the valve spring force. Refer to Specifications, "Cylinder Head
Valves".
6. Repeat Steps 1 through 5 for the removal of the remaining valve springs.
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Caterpillar Cat 268B SKID STEER LOADER (Prefix LBA) Service Repair Manual (LBA00001 and up).pdf

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