OPERATING INSTRUCTIONS RH 40 E

Inspection and servicing

Bypass valves (cooling circuit)

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. Collect escaping hydraulic oil and discard without polluting the environment.

Cleaning the valve

" Remove cover (7, Fig. 3-56:).

" Unscrew screws (33, Fig. 3-57:) and withdraw valve carrier (31) together with valve (32).

" Clean valve (32) in white spirit or paraffin oil and replace, if required.

" Insert valve (32) into valve carrier (31).

" Fasten valve carrier (31) with screws (33) in the hydraulic oil reservoir. Refit cover (7, Fig. 8) with a new sealing ring.

Changing the valve

" Remove bypass valve as described under "Cleaning".

" Remove valve (32, Fig. 3-57:) and replace by a new one.

" Fasten bypass valve (31) on the hydraulic oil reservoir.

" Refit cover (7, Fig. 3-56:).