OPERATING INSTRUCTIONS 6015 / RH40E Inspection and servicing

Breather filter

Read and observe the "Inspection and servicing - Safety instructions" chapter.

Shut off the engine.

Risk of scalding caused by hot hydraulic oil. The hydraulic oil reservoir itself may also be hot. Avoid skin contact.

Skin contact with hydraulic oil may cause skin injury.

Wear protective gloves and firm working clothing. Wear fall arresters before working on the hydraulic tank.

Replacing the filter elements

The breather filters (20, Fig. 3-61:) ensure venting of the hydraulic oil reservoir at varying hydraulic oil levels.

 Unscrew butterfly nut (50, Fig. 3-62:). Withdraw hood (51) and withdraw filter element (52) from the holding rod.

 Insert new sealing ring (53) and new filter element and secure hood (51) with nut (50).

High-pressure filter for working hydraulics

To filter the hydraulic oil on the high-pressure side of the working hydraulic system, the machine is equipped with two high-pressure filters (30, Fig. 3-63:).

Checking/cleaning the filter elements

 Unscrew filter housing (31, Fig. 3-63:) and pour out the oil.

 Withdraw filter element (32) from housing (31).

Read and observe the "Inspection and servicing – Safety instructions" chapter.

Checking/changing the filter elements

Shut off the engine.

Risk of scalding caused by hot hydraulic oil. The filter housings themselves may also be hot. Avoid skin contact.

Skin contact with hydraulic oil may cause skin injury.

Wear protective gloves and firm working clothing. Wear fall arresters before working on the hydraulic tank.

Collect escaping hydraulic oil and discard without polluting the environment.

 Clean filter housing and contact faces at the filter head (35, Fig. 3-64:) with white spirit or paraffin oil and replace, if required.

 Insert filter element into housing (31, Fig. 11) and attach to the filter head (35) with new, slightly oiled sealing rings (33 and 34) and a new retaining ring (36).

Check high-pressure filter for leaks after the system has been put into operation.

Replacing the filter elements

 Detach the filter element as described under "Checking the filter elements".

 Clean filter housing (9, Fig. 3-64:) and the sealing faces at the filter head with white spirit or paraffin oil.

 Insert new filter element into filter housing (9) and refit to the filter head with new, lightly oiled sealing rings (10 and 14) and a new retaining ring (13).

Check high-pressure filter for leaks after putting it into operation.

High-pressure filters for the servo circuit and the feeding circuit of the slewing pump

The excavator is equipped with a high-pressure filter (40, Fig. 3-65:) for the servo circuit and another filter (41) for the feeding circuit of the slewing pump.

Check filter tell-tales (1, Fig. 3-65:) regulary - at operating temperature - for indication of contamination. If the red sector is visible through transparent cap (2), the filter element must be cleaned or changed.

Checking/cleaning the filter elements

 Unscrew filter housing (42, Fig. 3-66:) and pour out the oil.

 Withdraw filter element (43) from housing (42).

 Clean filter housing and contact faces at the filter head with white spirit or paraffin oil.

 Insert filter element into housing (42) and attach to the filter head with a new, slightly oiled sealing ring (46).

 Check the high-pressure filter for leaks after thesystem has been put into operation.

Read and observe: "Inspection and servicing - Safety instructions".

Shut off the engine.

Risk of scalding from hot hydraulic oil. The filter housings may also be hot. Avoid skin contact.

Skin contact with hydraulic oil may cause skin injury.

Wear protective gloves and firm protective clothing.

Collect escaping hydraulic oil and discard without polluting the environment.

Replacing the filter elements

 Detach the filter elements as described under "Checking the filter elements".

 Insert new filter element (43) and re-assemble.

 Check the high-pressure filter for leaks after putting it into operation.

Changing the hydraulic oil

Read and observe the "Inspection and servicing - Safety instructions" chapter.

Shut off the engine.

Risk of scalding caused by hot hydraulic oil. The hydraulic oil reservoir itself may also be hot. Avoid skin contact.

Skin contact with hydraulic oil may cause skin injury.

Wear protective gloves and firm working clothing. Wear fall arresters before working on the hydraulic tank.

Collect escaping oil and discard without polluting the environment.

Do not start up the drive engine when the hydraulic oil reservoir is empty. The hydraulic pumps may be destroyed if they are allowed to run dry.

Avoid mixing of different hydraulic fluids

The machine has been run in at the factory with BM Long Term Hydraulic Fluid HSS (Part-No. 2482971). Bucyrus HEX recommends using this high-grade hydraulic fluid also in operation as it has been made especially for use in these machines to which it is also perfectly adapted.

If oil analyses are performed regularly and with positive results, the BM Long Term Hydraulic Fluid can remain in the machine for up to 10 000 operating hours.

If an alternative hydraulic fluid is to be used, it must fulfil the same specifications. Please note that the change interval for alternative fluids is fixed at 5 000 operating hours.

There is an increased risk of damage to hydraulic components, if different hydraulic fluids are mixed during topping up as well as when changing over to a fluid of a different type or from another manufacturer.

For topping up, it is therefore necessary to use only same hydraulic fluid as the one that is already in the hydraulic system.

When changing over to an alternative hydraulic fluid, please observe that there is always a small amount of old fluid remaining in the hydraulic system even after the system has been emptied. The mixing of this residual amount of old fluid with the new alternative fluid reduces the properties of the fluid dramatically and can cause damage to components of the hydraulic system in operation.

To avoid this result, the change-over to the alternative fluid must be performed in strict compliance with the manufacturer's prescriptions. The manufacturer must confirm that his hydraulic fluid is compatible with the BM Long Term Hydraulic Fluid. The remaining amount of old fluid must not exceed 2% of the total volume. This can only be achieved by repeated flushing with the total fluid volume.

If the remaining amount of fluid exceeds 2% of the total volume, the fluid becomes a detrimental "mixed fluid".

The operation of the system with mixed fluids must by all means be avoided.

Bucyrus HEX assumes no warranty for damage caused as a result of the machine having been operated with consumables of inappropriate specification or with mixed fluids.