HORN GP- 3366033 - Caterpillar

Installation Procedure
Table 1
Required Tools    
Tool     Part Number     Part Description     Qty    
A     FT-2674     Vacuum Cap     1    
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.
Illustration 1 g00690963
Remove the cap from the hydraulic tank. Attach Tooling (A) to the hydraulic tank.Note: Hook up the air to Tooling (A) in order to create a vacuum in the hydraulic system. This will minimize the leakage from the hose assemblies.
Illustration 2 g00706668
Place pilot valve (8), as shown.
Connect hose assemblies (10) to the pilot valve.
Remove Tooling (A) .
Illustration 3 g00706661
Place pilot valve (8) in position, as shown. Install bolts (9) to pilot valve (8) .
Illustration 4 g00739116
Connect harness assemblies (7) to the joystick.
Illustration 5 g00739111
Place cover (6) over the joystick, as shown.
Connect harness assemblies (5) .
Install high efficiency filters in place of the pilot filter, case drain filter, and the return filter.Note: High efficiency filters should not be run for more than 250 hours before you change back to the standard filters.
Fill the hydraulic oil tank with clean hydraulic oil to the correct level.Reference: Refer to Operation and Maintenance Manual, "Lubricant Viscosities" for the proper oil viscosity.Reference: Refer to Operation and Maintenance Manual, "Hydraulic System Oil Level - Check" for the correct filling procedures.
Install the cap to the hydraulic tank.
Start the engine, and check the operation of the joystick. Also, check for leaks. Stop the engine.
Place cover (6) on the console if the joystick operated properly and no leaks were present.
Illustration 6 g00739106
Install armrest (3). Install screws (4) .
Illustration 7 g00739101
Install screws (2) to the rear of the console.
Illustration 8 g00739085
Install screws (1). Install the cover over screws (1) .
Obtain a hydraulic oil sample from the main S O S port.Reference: Refer to Operation and Maintenance Manual, "Sampling Interval and Location of Sampling Valve" for the correct location.
If the S O S sample exceeds ISO 18/15, flush the hydraulic system.Reference: Refer to Contamination Control Guidelines, SEBF8436, "Hydraulic System Flushing Procedure for 330C Hydraulic Excavators" for further information.