308E SR Caterpillar Mini Hyd Excavator Service Repair Manual

Product: MINI HYD EXCAVATOR

Model: 308E SR MINI HYD EXCAVATOR JBE

Configuration: 308E SR Mini Hydraulic Excavator JBE00001-UP (MACHINE) POWERED BY C3.3B Engine

Disassembly and Assembly

C2.6 and C3.3B

Engines for Caterpillar Built Machines

Media Number -UENR0137-09

Date -01/08/2015 Date Updated -14/08/2015

Alternator - Remove and Install

SMCS - 1405-010

S/N - A9W1-UP

S/N - A9Z1-UP

S/N - CE21-UP

S/N - DML1-UP

S/N - EML1-UP

S/N - F8C1-UP

S/N - FHL1-UP

S/N - FMR1-UP

S/N - FTK1-UP

S/N - GBJ1-UP

S/N - GTK1-UP

S/N - H1Y1-UP

S/N - HAM1-UP

S/N - HEL1-UP

i05244466

S/N - HMR1-UP

S/N - JBE1-UP

S/N - JRD1-UP

S/N - JRF1-UP

S/N - JRS1-UP

S/N - JSL1-UP

S/N - JSN1-UP

S/N - KTS1-UP

S/N - L661-UP

S/N - L771-UP

S/N - L881-UP

S/N - LST1-UP

S/N - MLT1-UP

S/N - MPW1-UP

S/N - NTL1-UP

S/N - PPT1-UP

S/N - RCX1-UP

S/N - SEN1-UP

S/N - STK1-UP

S/N - TAZ1-UP

S/N - TLK1-UP

S/N - WCT1-UP

Removal Procedure

Start By: A. Remove V belt.

1. Turn the battery disconnect to the OFF position.

Illustration 1

2. Disconnect harness assemblies (2) and (3) from alternator (1) .

3. Remove nut (4) .

Illustration 2

4. Remove nut (7) and pulley (6) .

5. Remove bolts (5) and (6) .

6. Remove alternator (1) .

Installation Procedure

1. Install alternator (1) in the reverse order of removal.

g02798717

g02798718

a. Ensure pulley (6) is correctly oriented.

b. Tighten nut (7) to a torque of 58 to 79 N·m (43 to 58 lb ft).

Mon Jan 4 10:26:09 UTC+0530 2021

Product: MINI HYD EXCAVATOR

Model: 308E SR MINI HYD EXCAVATOR JBE

Configuration: 308E SR Mini Hydraulic Excavator JBE00001-UP (MACHINE) POWERED BY C3.3B Engine

Disassembly and Assembly

C2.6 and C3.3B

Engines for Caterpillar Built Machines

Bearing Clearance - Check

SMCS - 1203-535; 1219-535

Measurement Procedure

Table 1 Required Tools

Plastic Gauge (Green)

Gauge (Red)

to

Plastic Gauge (Blue)

to 0.229 mm (0.004 to 0.009 inch)

Plastic Gauge (Yellow) 0.230 to 0.510 mm (0.009 to 0.020 inch)

i05242994

Note: Refer to Specification UENR0995 "Engine Design" for non-specified engine Torque Values.

Note: Plastic gauge may not be necessary when the engine is in the chassis.

This is the sample of the manual

Click on the download link for complete Manual

NOTICE

Keep all parts clean from contaminants.

Contaminants may cause rapid wear and shortened component life.

Note: Caterpillar does not recommend the checking of the actual bearing clearances particularly on small engines. The checking can result in the possibility of obtaining inaccurate information and the possibility of damaging the bearing or the journal surfaces. Each Caterpillar 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 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.

Illustration 1 g01152855

Typical Example

4. Remove all of Tooling (A) before you install the bearing cap.

Note: When Tooling (A) is used, the readings can sometimes be unclear. For example, all parts of Tooling (A) are not the same width. Measure the major width in order to ensure that the parts are within the specification range. Refer to Specifications Manual, "Connecting Rod Bearing Journal" and Specifications Manual, "Main Bearing Journal" for the correct clearances.

Product: MINI HYD EXCAVATOR

Model: 308E SR MINI HYD EXCAVATOR JBE

Configuration: 308E SR Mini Hydraulic Excavator JBE00001-UP (MACHINE) POWERED BY C3.3B Engine

Disassembly and Assembly

C2.6 and C3.3B

Engines for Caterpillar Built Machines

Media Number -UENR0137-09 Publication Date -01/08/2015 Date Updated -14/08/2015

Bearing Clearance - Check

SMCS - 1203-535; 1219-535

S/N - A9W1-UP

S/N - CE21-UP

S/N - EML1-UP

S/N - F8C1-UP

S/N - FTK1-UP

S/N - HAM1-UP

S/N - HEL1-UP

S/N - HMR1-UP

S/N - JBE1-UP

S/N - JSN1-UP

S/N - KTS1-UP

S/N - MLT1-UP

S/N - MPW1-UP

S/N - PPT1-UP

i05977048

S/N - WCT1-UP

Measurement Procedure

Table 1

198-9142

Plastic Gauge (Green) 0.025 to 0.076 mm (0.001 to 0.003 inch)

Plastic Gauge (Red)

198-9143

198-9144

198-9145

0.051 to 0.152 mm (0.002 to 0.006 inch)

Plastic Gauge (Blue)

0.102 to 0.229 mm (0.004 to 0.009 inch)

Plastic Gauge (Yellow) 0.230 to 0.510 mm (0.009 to 0.020 inch)

Note: Plastic gauge may not be necessary when the engine is in the chassis.

NOTICE

Keep all parts clean from contaminants.

Contaminants may cause rapid wear and shortened component life.

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: