Service Repair Manual
Models
312B and 312B L Excavator
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Product: EXCAVATOR
Model: 312B EXCAVATOR 9GR
Configuration: 312B & 312B L TRACK-TYPE EXCAVATORS 9GR00001-UP (MACHINE) POWERED BY 3064 ENGINE
Disassembly and Assembly
3064 and 3066 Engines for Caterpillar Built Machines
Media Number -SENR5553-10
Publication Date -01/05/2012
Date Updated -15/05/2012
i01567208
Flywheel - Remove
SMCS - 1156-011
Removal Procedure
Table 1
Required Tools
Tool Part Number
Part Description
Qty
A
138-7575
Link Bracket
1
B
Forcing screws M16 X 2
2
NOTICE
Keep all parts clean from contaminants.
Contaminants may cause rapid wear and shortened component life.
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Illustration 1
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1. Remove twelve bolts (1) and washers from the adapter (2) .
2. Remove the adapter (2) from the flywheel housing.
Illustration 2
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3. Remove four socket head bolts (3) from the inner ring (4) .
4. Remove the inner ring (4) from the flywheel.
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Illustration 3
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5. Remove six bolts (5) that secure flywheel (6) to the crankshaft. Check all bolts for stripped
threads. Replace the bolts, if necessary.
Illustration 4
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6. Install Tool (A), a strap, and a suitable lifting device onto the flywheel (6).
7. Use Tool (B) in order to remove the flywheel and ring gear out of the housing. The weight
of the flywheel is 50 kg (110 lb).
8. Perform the following procedure in order to remove the flywheel ring gear.
Illustration 5
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a. Place the flywheel and ring gear assembly on a suitable support.
Note: Check the flywheel ring gear for the following conditions:cracks, damaged
dowel holes, worn ring gear and damaged ring gear.
Note: Identify the orient