ENGINE AR-COMPLETE 3259707 - Caterpillar

Hydraulic oil pressure can remain in the hydraulic oil system on this machine after the engine and pump have been stopped. Serious injury can be caused if this pressure is not released before any service is done on the hydraulic systems. To prevent possible injury, refer to the procedure in Testing and Adjusting Manual, "Release of Pressure in the Hydraulic System".When possible, the bucket must always be lowered to the ground before service is started. When it is necessary for the boom to be in the raised position while tests or adjustments are done, be sure that the boom, stick and bucket have correct support.Be sure the swing parking brakes and the travel parking brakes are on and the brake release lines are disconnected and plugged.Always move the machine to a location away from the travel of other machines. Be sure that other personnel are not near the machine when the engine is running and tests or adjustments are being made.
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 g00511926
Resolver Manifold (1) Passage for signal pressure to swing dual pressure relief valve (2) Test port for signal pressure out of resolver valve (B) (3) Switch assembly (swing parking brake) (4) Test port for stick signal pressure (5) Switch assembly (engine speed control) (6) Test port for signal pressure out of resolver valve (H) (7) Switch assembly (boom float) (8) Test port for signal pressure out of resolver valve (K) (9) Switch assembly (travel alarm) (10) Passage for signal pressure to travel parking brake dual pressure control valve (11) Inlet passage for signal pressure for swing (12) Inlet passage for signal pressure for swing (13) Inlet passage for signal pressure from bottom dump close solenoid valve (14) Inlet passage for signal pressure from bottom dump open solenoid valve (15) Inlet passage for signal pressure for extension of the stick cylinders (16) Inlet passage for signal pressure for retraction of the stick cylinders (17) Inlet passage for signal pressure for boom raise (18) Inlet passage for signal pressure for boom lower (19) Inlet passage for signal pressure for extension of the bucket cylinders (20) Inlet passage for signal pressure for retraction of the bucket cylinders (21) Inlet passage for signal pressure for forward left travel (22) Inlet passage for signal pressure for reverse left travel (23) Inlet passage for signal pressure for forward right travel (24) Inlet passage for signal pressure for reverse right travel (A) Resolver Valve (B) Resolver Valve (C) Resolver Valve (D) Resolver Valve (E) Resolver Valve (F) Resolver Valve (G) Resolver Valve (H) Resolver Valve (J) Resolver Valve (K) Resolver Valve (L)