20509 Mariner NUT, THROTTLE CONTROL LEVER SCREW

Table 1
Required Tools    
Tool    Part Number    Part Description    Qty    
A     138-7575     Link Bracket     1    Start By:
Remove the battery and battery cable. Refer to Disassembly and Assembly, "Battery - Remove and Install ".
Remove the hood. Refer to Disassembly and Assembly, "Hood - Remove and Install".
Remove the air cleaner. Refer to Disassembly and Assembly, "Air Cleaner - Remove and Install".
Remove the radiator. Refer to Disassembly and Assembly, "Radiator and Fan - Remove and Install".
Remove the piston and gear pump. Refer to Disassembly and Assembly, RENR5546, "Piston and gear Pump - Remove and Install".
Remove the counterweight. Refer to Disassembly and Assembly, RENR5546, "Counterweight - Remove and Install ".
Keep all parts clean from contaminants.Contamination of the hydraulic system with foreign material will reduce the service life of the hydraulic system components.To prevent contaminants from entering the hydraulic system, always plug or cap the lines, fittings, or hoses as they are disconnected. Cover any disassembled components and clean them properly before assembly.Clean the hydraulic system properly after any major component exchange or especially after a component failure, to remove any contamination.
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.
At operating temperature, the hydraulic oil is hot and under pressure. Hot oils can cause burns.To prevent possible personal injury, release the pressure in the implement hydraulic circuit (boom, stick, bucket, and swing), travel circuits, and the hydraulic oil tank at the filler cap before any hydraulic lines or components are disconnected or removed.Remove the filler cap only when the engine is stopped and the filler cap is cool enough to touch.
Note: Put identification marks on all lines, on all hoses, on all wires, and on all tubes for installation purposes. Plug all lines, all hoses and all tubes. This helps to prevent fluid loss and this helps to keep contaminants from entering the system.
Illustration 1 g00858861
Remove the bolt and the washer. Disconnect clip (1) from the wiring harness. Clip (1) secures the wiring harness to the machine frame.
Illustration 2 g00858907
Label all wires and disconnect all wire connectors (2). Wire connectors (2) are located at the fuse panel.Note: The fuse panel is located behind the battery.
Illustration 3 g00858946
Disconnect cable straps (3) that secure wiring harness (4) to the machine frame.Note: Wiring harness (4) is for the fuse panel.
Illustration 4 g00858986
Illustration 5 g00859005
Remove muffler clamp (5) and bolt (6). Remove exhaust elbow (7) .
Illustration 6 g00859079
Disconnect backup alarm wire (8).
Disconnect wires (9) for the windshield washer reservoir.
Disconnect wires (10) for the governor control.
Illustration 7 g00859089
Remove head bolt (11) in the center of the engine head. Attach Tooling (A) to bolt (11) and tighten into the engine head. Attach a nylon strap and a suitable lifting device to Tooling (A) .Note: SERVICE DATA: ROTATE THE TOP OF TOOLING (A) TOWARD THE FLYWHEEL. THIS PLACEMENT WILL ALLOW IMPROVED BALANCE OF THE ENGINE DURING REMOVAL.
Illustration 8