305 CR Mini Hydraulic Excavator Equipment Lowering with Engine Stopped Caterpillar


Equipment Lowering with Engine Stopped
`

To lower the boom, place the hydraulic lockout control (lever) in the UNLOCKED position. Move the joystick to the BOOM LOWER position. If the accumulator is still charged, the boom will lower.

If the boom does not lower, the accumulator is empty. Use the following method to lower the boom.

------ WARNING! ------

Be sure no one is under or near the implements before manually lowering the boom. Keep all personnel away from the boom drop area when lowering the boom with the engine stopped in order to avoid possible personal injury

----------------------

------ WARNING! ------

Personal injury can result from oil under high pressure.

DO NOT allow high pressure oil to contact skin.

Wear appropriate protective equipment while working with high pressure oil systems.

----------------------

Note: Refer to Operation and Maintenance Manual, "General Hazard Information" for information on Containing Fluid Spillage.




Illustration 1g00834369

The boom manual lowering valve is located on the boom.




    Illustration 2g00821318

  1. Connect a hose to boom manual lowering valve (1) .

  1. Slowly open boom manual lowering valve (1) by a maximum of 1/2 turn in order to lower the boom. Drain hydraulic oil into a suitable container.

  1. Make sure that the work tool has lowered all the way to the ground. Tighten boom manual lowering valve (1) to a torque of 13 ± 2 N·m (9 ± 1 lb ft).

  1. Make the necessary repairs before you operate the machine.

  1. Check the level of the hydraulic fluid. Refer to Operation and Maintenance Manual, "Hydraulic System Oil Level-Check".

Information System:

5130B Excavator Access Doors and Covers
5130B Excavator Model Views and Specifications
325C Excavator Machine System Specifications Main Hydraulic Pump
345B, 345B Series II and W345B Series II Excavators Engine and Pump Control No Power Supply to Controller - Troubleshoot
345B, 345B Series II and W345B Series II Excavators Engine and Pump Control Starting Aid Circuit
345B, 345B Series II and W345B Series II Excavators Engine and Pump Control Start and Stop Circuit
345B, 345B Series II and W345B Series II Excavators Engine and Pump Control General Information (Electrical System)
345B, 345B Series II and W345B Series II Excavators Engine and Pump Control Troubleshooting Diagnostic Codes
345B, 345B Series II and W345B Series II Excavators Engine and Pump Control Using Caterpillar Electronic Technician
345B, 345B Series II and W345B Series II Excavators Engine and Pump Control Parameter Status Checks
345B, 345B Series II and W345B Series II Excavators Engine and Pump Control Using Service Mode
345B, 345B Series II and W345B Series II Excavators Engine and Pump Control General Information
301.5, 301.6 and 301.8 Mini Hydraulic Excavators Hammer Operation - If Equipped
W345B Series II Excavator Hydraulic System Main Hydraulic Pump Air - Purge
W345B Series II Excavator Hydraulic System Relief Valve (Main) - Test and Adjust
W345B Series II Excavator Hydraulic System Relief Valve (Crossover) - Test and Adjust
325C Excavator Machine System Specifications Control Valve (Main)
W345B Series II Excavator Hydraulic System Relief Valve (Line) - Test and Adjust
5130B Excavator Hydraulic System Piston Pump (Swing)
5130B Excavator Hydraulic System Piston Pump (Swing)
W345B Series II Material Handler Machine Systems Main Control Valve - Disassemble
345B, 345B Series II and W345B Series II Excavators Machine Systems Main Control Valve - Assemble
W345B Series II Excavator Hydraulic System Travel Motor - Test - Measurement of Case Drain Oil
5130B Excavator Reference Material