673989 Volvo.Penta Grommet

Personal injury can result from hydraulic oil pressure and hot oil.Hydraulic oil pressure can remain in the hydraulic system after the engine has been stopped. Serious injury can be caused if this pressure is not released before any service is done on the hydraulic system.Make sure all of the work tools have been lowered to the ground, and the oil is cool before removing any components or lines. Remove the oil filler cap only when the engine is stopped, and the filler cap is cool enough to touch with your bare hand.
Escaping fluid under pressure, even a pinhole size leak, can penetrate body tissue, causing serious injury, and possible death. If fluid is injected into your skin, it must be treated immediately by a doctor familiar with this type of injury.Always use a board or cardboard when checking for a leak.
If the machine is equipped with a ride control system, move the ride control switch to the ON position.
Illustration 1 g02009358
Position the bucket or the work tool just above the ground at a slight downward angle in order to ensure that the head end of the lift cylinders is pressurized.
Turn the engine start switch to the OFF position.
When the engine has stopped, turn the engine start switch back to the ON position so the pilot oil can reach the main valve.
Move the implement lockout switch to the UNLOCKED position.
Move the lift control lever to the FLOAT position and the tilt control lever to the TILT BACK position at the same time. This action allows the bucket or the work tool to tilt back while the boom is lowered. The bottom of the bucket or the work tool should rest flat on the ground. The weight of the linkage should be supported by the ground. The pressure from the head end of the lift cylinders and from the ride control accumulator is now vented to the hydraulic tank.
When the bucket or the work tool has settled to the ground, move both control levers to the HOLD position. Then, cycle the control levers through all positions in order to purge any remaining pressure from the implement hydraulic system.
Turn the engine start switch to the OFF position.
Slowly loosen the hydraulic tank filler cap in order to release the pressure from the hydraulic tank.
After all of the pressure has been released, tighten the hydraulic tank filler cap. The hydraulic system pressure has now been released. Hydraulic lines and components can now be removed. Release Procedure (Steering System and Braking System)
Personal injury can result from hydraulic oil pressure and hot oil.Hydraulic oil pressure can remain in the hydraulic system after the engine has been stopped. Serious injury can be caused if this pressure is not released before any service is done on the hydraulic system.Make sure all of the work tools have been lowered to the ground, and the oil is cool before removing any components or lines. Remove the oil filler cap only when the engine is stopped, and the filler cap is cool enough to touch with your bare hand.
Escaping fluid under pressure, even a pinhole size leak, can penetrate body tissue, causing serious injury, and possible death. If fluid is injected into your skin, it must be treated immediately by a doctor familiar with this type of injury.Always use a board or cardboard when checking for a leak.
Note: Be sure that the machine is on flat level ground.Note: Make sure that the parking brake is engaged.
Straighten the machine and install the steering link.
Lower the bucket to the ground and stop the engine.
Move the steering and transmission lock control to the LOCKED position.
In order to release the pressure from steering cylinders, the machine must not be operated for a minimum of 10 minutes. 10 minutes will allow sufficient time for the pressure in the steering system to dissipate.
Depress the brake pedal repeatedly in order to release any pressure in the braking system.
Slowly loosen the hydraulic tank filler cap in order to release the pressure from the hydraulic tank.
After all of the pressure has been released, tighten the hydraulic tank filler cap. The hydraulic system pressure has now been released. Hydraulic lines and components can now be removed. Dead Electronics
If the electronics fail, it may not be possible to relieve all stored hydraulic oil pressure. The following precautions should be taken.
Turn the engine OFF.
The machine should be secured with a lockout.
Use the appropriate stand or blocks to prevent undesired drift of implements.
Barriers should be used in order to prevent personnel from entering areas that implement drift or movement could be hazardous.
To lower lift arms and the ripper onto the ground or onto the appropriate supports, open the 112-1817 Manual Valve Gp.
Do not open or disassemble any hydraulic circuits until the electronic controls are required to relieve stored hydraulic pressure.