SCREW (4.38" Long) 6D2518 - Caterpillar

Removal Procedure
Table 1
Required Tools
Tool Part Number Part Description Qty
A(1) 9U-6198 Crankshaft Turning Tool 1
A(2) 5P-7306 Housing 1
5P-7305 Gear 1
B 5P-7305 Timing Pin (Crankshaft) 1
268-1966 Adapter
C 1P-2320 Combination Puller 1
(1) The Crankshaft Turning Tool is used on the front pulley.
(2) This Tool is used in the aperture for the electric starting motor.Note: Either Tooling (A) can be used. Use the Tooling that is most suitable.
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.Dispose of all fluids according to local regulations and mandates.
Keep all parts clean from contaminants.Contaminants may cause rapid wear and shortened component life.
Note: Put identification marks on all hoses, on all hose assemblies and on all tube assemblies for installation purposes. Plug all hose assemblies and tube assemblies. Plugging hose assemblies helps to prevent fluid loss. Plugging hose assemblies helps to keep contaminants from entering the system.
Do not disconnect the air lines until the air pressure in the system is at zero. If hose is disconnected under pressure it can cause personal injury.
Release the pressure from the air system. Refer to the Original Equipment Manufactures (OEM) for the correct procedure.
Drain the coolant from the cooling system into a suitable container for storage or for disposal. Refer to Operation and Maintenance Manual, "Cooling System Coolant - Change" for the correct draining procedure.
If the engine is equipped with a hydraulic pump on the rear of the air compressor, remove the hydraulic pump. Refer to the (OEM for the correct procedure.
Illustration 1 g02710999
Typical example
Remove plug (2) from the cylinder block. Remove O-ring seal (1) from plug (2).
Use Tooling (A) in order to rotate the crankshaft so that number one piston is at top dead center on the compression stroke. Refer to System Operation, Testing and Adjusting, "Finding Top Center Position for No.1 Piston" for the correct procedure. Note: The air compressor must be timed with the engine in order to minimize engine vibration.
Install Tooling (B) into Hole (X) in the cylinder block. Use Tooling (B) in order to lock the crankshaft in the correct position. Note: Do not use excessive force to install Tooling (B). Do not use Tooling (B) to hold the crankshaft during repairs.
Illustration 2 g02711018
Typical example
Illustration 3 g02711019
Typical example
Illustration 4 g02711020
Typical example
Disconnect coolant hose (3) and hose (4) from air compressor (6).
Disconnect the air lines from port (5) and port (7). Refer to the OEM for the correct procedure.
Remove tube assembly (9) from air compressor (6) and from the cylinder block.
Remove bolt (10) and bolt (12) from support bracket (11) and remove the support bracket.
Support air compressor (6). Remove nuts (15) and remove the air compressor from front housing (8).
Remove O-ring seal (20) from air compressor (6).
If necessary, remove bolts (17) and remove plate (16). Remove O-ring seal (13) from plate (16). Refer to Illustration 3.
If necessary, follow Step 14.a through