Caterpillar cat m316 d wheeled excavator (prefix w6a) service repair manual (w6a00001 and up)

Service Repair Manual
Models
M316D Wheeled Excavator

Shutdown SIS
Previous Screen
Product: WHEELED EXCAVATOR
Model: M316D WHEELED EXCAVATOR W6A
Configuration: M316D Excavator W6A00001-UP (MACHINE) POWERED BY C6.6 Engine
Disassembly and Assembly
C6.6 Engines for Caterpillar Built Machines
Media Number -KENR6081-15 Publication Date -01/03/2014 Date Updated -04/03/2014
i05735237
Idler Gear - Remove
SMCS - 1206-011
Removal Procedure (Standard Idler Gear)
Table 1
Required Tools
Tool Part Number Part Description Qty
A 230-6284 Timing Pin (Camshaft) 1
B
136-4632 Timing Pin (Crankshaft) 1
268-1966 Adapter 1
Start By:
a. Remove the fuel injection pump gear. Refer to Disassembly and Assembly, "Fuel Pump
Gear - Remove" for the correct procedure.
b. Remove the valve mechanism cover. Refer to Disassembly and Assembly, "Valve
Mechanism Cover - Remove and Install" for the correct procedure.
Note: Care must be taken in order to ensure that the fuel injection pump timing is not lost during
the removal of the fuel pump gear. Carefully follow the procedure in order to remove the fuel
pump gear.
NOTICE
Keep all parts clean from contaminants.
Contaminants may cause rapid wear and shortened component life.
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Illustration 1 g01337918
Alignment of timing marks
1. Ensure that Tooling (A) is installed into Hole (X) in the camshaft gear. Use Tooling (A) in
order to lock the camshaft in the correct position.
Note: Ensure that the gears are marked in order to show alignment. Refer to Illustration 1.
2. Ensure that Tooling (B) is installed in Hole (Y) in the cylinder block. Use Tooling (B) in
order to lock the crankshaft in the correct position.
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3. Loosen nuts (5) on all rocker arms (6). Unscrew adjusters (4) on all rocker arms (6) until all
valves are fully closed.
Note: Failure to ensure that ALL adjusters are fully unscrewed can result in contact between
the valves and pistons.
4. Mark plate (3) in order to show orientation.
Note: Identification will ensure that the plate can be installed in the original orientation.
5. Remove bolts (1).
6. Remove plate (3).
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7. Remove the assembly of idler gear (2) and hub (7) from the recess in the front housing.
Note: The idler gear must be tilted during removal.
8. Remove hub (7) from idler gear (2).
Removal Procedure (Early Heavy-Duty Idler Gear)
Table 2
Required Tools
B
268-1966 Adapter 1
Start By:
a. Remove the fuel injection pump gear. Refer to Disassembly and Assembly, "Fuel Pump
b. Remove the valve mechanism cover. Refer to Disassembly and Assembly, "Valve
pump gear.
NOTICE
Note: The assembly of heavy-duty idler gear is not serviceable. Do not disassemble the heavy-
duty idler gear.
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1. Ensure that Tooling (A) is installed into hole (X) in the camshaft gear. Use Tooling (A) in
2. Ensure that Tooling (B) is installed in hole (Y) in the cylinder block. Use Tooling (B) in
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4. Remove bolts (1) from the assembly of heavy-duty idler gear (2).
5. Remove the assembly of idler gear (2) from the recess in the front housing.
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Removal Procedure (Latest Heavy-Duty Idler Gear)
Table 3
Required Tools
B
268-1966 Adapter 1
C -
Bolt
(M8 x 80mm)
1
Start By:
a. If the engine is equipped with an air compressor, remove the air compressor. Refer to
Disassembly and Assembly, "Air Compressor - Remove and Install" for the correct
procedure.
b. If the engine is equipped with an accessory drive, remove the accessory drive. Refer to
Disassembly and Assembly, "Accessory Drive - Remove and Install" for the correct
procedure.
c. Remove the fuel injection pump gear. Refer to Disassembly and Assembly, "Fuel Pump
d. Remove the valve mechanism cover. Refer to Disassembly and Assembly, "Valve
pump gear.
NOTICE
Note: The assembly of heavy-duty idler gear is not serviceable. Do not disassemble the heavy-
duty idler gear.
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1. Ensure that Tooling (A) is installed into Hole (X) in the camshaft gear. Use Tooling (A) in
2. Ensure that Tooling (B) is installed in Hole (Y) in the front housing. Use Tooling (B) in
Typical example
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4. Remove bolts (1) from the assembly of heavy-duty idler gear (2). Refer to Illustration 9.
Typical example
5. Remove the assembly of idler gear (2) from the recess in the front housing.
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Typical example
6. If necessary, remove plate (6). Install Tooling (C) into threaded Hole (Z) in order to remove
plate (6).
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All Rights Reserved.
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Shutdown SIS
Previous Screen
Product: WHEELED EXCAVATOR
Model: M316D WHEELED EXCAVATOR W6A
Configuration: M316D Excavator W6A00001-UP (MACHINE) POWERED BY C6.6 Engine
Disassembly and Assembly
C6.6 Engines for Caterpillar Built Machines
Media Number -KENR6081-15 Publication Date -01/03/2014 Date Updated -04/03/2014
i05735238
Idler Gear - Install
SMCS - 1206-012
Installation Procedure (Standard Idler Gear)
Table 1
Required Tools
B
268-1966 Adapter 1
NOTICE
1. Ensure that number one piston is at top dead center on the compression stroke. Refer to
System Operation, Testing and Adjusting, "Finding Top Center for No. 1 Piston" for the
correct procedure.
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2. Ensure that Tooling (A) is installed into Hole (X) in camshaft gear (1).
order to lock the crankshaft in the correct position. Refer to System Operation, Testing and
Adjusting, "Finding Top Center Position for No.1 Piston" for the correct procedure.
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4. Clean idler gear (2) and inspect the idler gear for wear or damage. Refer to Specifications,
"Gear Group (Front)" for more information. If necessary, replace the idler gear.
5. Clean hub (7) and inspect the hub for wear or damage. Refer to Specifications, "Gear Group
(Front)" for more information. If necessary, replace the hub.
6. Lubricate hub (7) with clean engine oil. Slide hub (7) into idler gear (2). Ensure that the
timing marks are toward the front of the idler gear.
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7. Align the timing mark on idler gear (2) with the timing mark on the camshaft gear. Refer to
the illustration 1. Install the assembly of idler gear (2) and hub (7) into the recess in the
timing case. Ensure that oil Hole (Z) is to the top of the hub.
Note: The idler gear must be tilted during installation. Ensure that the holes in the hub are
aligned with the holes in the cylinder block.
8. Clean plate (3) and inspect the plate for wear or damage. If necessary, replace the plate.
9. Lubricate plate (3) with clean engine oil. Align the holes in plate (3) with the holes in hub
(7). Install the plate in the original orientation.
10. Install bolts (1).
11. Remove Tooling (A) and Tooling (B).
Note: Ensure that timing marks are aligned, before removing the Tooling (A) and Tooling
(B).
12. Install plug (8) to the cylinder block. Refer to Illustration 2.
13. Tighten bolts (1) to a torque of 44 N·m (32 lb ft).
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Checking end play by using a set of feeler gauge's
14. Use a set of feeler gauge's in order to check the end play for the idler gear. Refer to
Specifications, "Gear Group (Front)" for more information.
Checking backlash
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15. Check the backlash between the idler gear and the camshaft gear. Refer to Specifications,
"Gear Group (Front)" for more information.
16. Check the backlash between the idler gear and the crankshaft gear. Refer to Specifications,
17. Lightly lubricate all of the gears with clean engine oil.
End By:
a. Install the fuel injection pump gear. Refer to Disassembly and Assembly, "Fuel Pump Gear
- Install" for the correct procedure.
Installation Procedure (Early Heavy-Duty Idler Gear)
Table 2
Required Tools
B
268-1966 Adapter 1
C
9U-7324 Indicator Bracket 1
7H-1942 Dial Indicator 1
3S-3268 Indicator Contact Point 1
7H-1940 Universal Attachment 1
NOTICE
1. Ensure that number one piston is at top dead center on the compression stroke. Refer to
System Operation, Testing and Adjusting, "Finding Top Center for No. 1 Piston" for the
correct procedure.
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2. Ensure that Tooling (A) is installed into Hole (X) in the camshaft gear.
order to lock the crankshaft in the correct position. Refer to System Operation, Testing and
4. Clean the assembly of idler gear (2) and inspect the assembly of the idler gear for wear or
damage. Refer to Specifications , "Gear Group (Front)" for more information. If necessary,
replace the assembly of the idler gear.
5. Lubricate the bearings in the assembly of idler gear (2) with clean engine oil.
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6. Align the timing mark on idler gear (2) with the timing mark on the camshaft gear. Refer to
the illustration 7. Install the assembly of idler gear (2) into the recess in the timing case.
Ensure that the identification mark TOP is upward.
Note: The idler gear must be tilted during installation. Ensure that the holes in assembly of
the idler gear are aligned with the holes in the cylinder block.
7. Install bolts (1).
8. Remove Tooling (A) and Tooling (B).
Note: Ensure that timing marks are aligned, before removing the Tooling (A) and Tooling
(B).
9. Install plug (6) to the cylinder block. Refer to Illustration 8.
10. Tighten bolts (1) to a torque of 44 N·m (32 lb ft).
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11. Use Tooling (C) in order to check the end play for the heavy-duty idler gear. Refer to
Specifications, "Gear Group (Front)" for more information.
Checking backlash
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12. Check the backlash between the idler gear and the camshaft gear. Refer to Specifications,
13. Check the backlash between the idler gear and the crankshaft gear. Refer to Specifications,
14. Lightly lubricate all of the gears with clean engine oil.
End By:
a. Install the fuel injection pump gear. Refer to Disassembly and Assembly, "Fuel Pump Gear
- Install" for the correct procedure.
Installation Procedure (Latest Heavy-Duty Idler Gear)
Table 3
Required Tools
B
268-1966 Adapter 1
C
9U-7324 Indicator Bracket 1
7H-1942 Dial Indicator 1
3S-3268 Indicator Contact Point 1
7H-1940 Universal Attachment 1
NOTICE
1. Ensure that number one piston is at the top center Position on the compression stroke. Refer
to Systems Operation, Testing and Adjusting, "Finding Top Center Postion for No. 1
Piston" for the correct procedure.
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2. Ensure that Tooling (A) is installed into Hole (X) in the camshaft gear.
order to lock the crankshaft in the correct position. Refer to Systems Operation, Testing and
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Caterpillar cat m316 d wheeled excavator (prefix w6a) service repair manual (w6a00001 and up)

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