OPERATING INSTRUCTIONS RH 90 C E

Inspection and servicing

Travel Gearbox

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

Switch off the electric motor

The gearbox housings may be hot, too.

Secure the machine as described in the "Securing the machine" section.

Protect the skin from contact with gearbox oil. Skin contact with cooling liquid is a potential health hazard.

Wear protective gloves and firm working clothing.

Gearbox - Checking the oil level / Topping up with oil

Park the machine as described under "Securing the machine".

Move the excavator into such a position that the checking plug (2 Fig. 3-75:) is in the displayed horizontal position.

Unscrew checking screw (2).

The oil level should reach up to the lower edge of the opening. Top up with oil, if required.

Screw checking plug (2) back in place.

Travel gearbox - Changing oil

Park the machine as described under "Securing the machine".

Move the excavator in such a position that the drain plug (3, Fig. 3-75:) is in the bottommost postion

Place a collecting recipient for used oil under the travel gearbox. Choose the required capacity in accordance with the "Refilling quantities - Oil" table.

Unscrew drain plug (3) and drain off the oil completely.

Screw drain plug (3) back in place.

Filling in oil

See chapter "Gearbox - Checking the oil level / Topping up oil".

Operating Instructions Rh 90 C E

Inspection and servicing

CRAWLER TRACKS Cleaning

Clean tracks, track and support rollers, sprockets and idlers regularly and whenever required. Cleaning is especially important in winter to prevent the tracks from being thrown off, oil from leaking out of track and support rollers, sprockets and idlers, excessive wear, the track from breaking.

To clean the tracks: raise one side of the excavator with the working equipment and allow track to turn; clean the side member supporting the track; clean track and support rollers (1 and 2 ,Fig. 3-76:) thoroughly; clean the sliding planes on the idler guides.

Support roller fastening

Check fastening screws (3, Fig. 3-77:) regularly for tightness

Tighten screws with a torque wrench to the prescribed tightening torque (cf. "Technical Handbook").

Track pads fastening

Check fastening screws (4 Fig. 3-78:) regularly for tightness:

Tighten screws with a torque wrench to the prescribed tightening torque (cf. "Technical Handbook").

Track roller, Support roller

Inspect all track and support rollers visually for leaks and free movement at regular intervals.

Track roller fastening

Check fastening screws (4, Fig. 3-77:) regularly for tightness:

Tighten screws with a torque wrench to the prescribed tightening torque (cf. "Technical Handbook").