Lull 944E-42 Service Manual User Manual download pdf (Page 449)

100

101

8.197

Model 644E-42/944E-42 Rev. 6/04

Hydraulic System

5. Start the engine and run at approximately one-third

to one-half throttle for about one minute without

moving the vehicle or operating any hydraulic

functions.

6. Inspect the pilot select valve for leaks and check the

level of the hydraulic fluid in the reservoir. Shut the

engine OFF.

Note: Check for leaks and repair as required before

continuing. Add hydraulic fluid to the reservoir as

needed.

7. Wipe up any hydraulic fluid spillage in, on, near and

around the vehicle, work area and tools.

8. Reinstall the access plate (14) to the cab floor.

Secure in place with the capscrews (15). Torque the

capscrews to 18 lb-ft (25 Nm).

d. Auxiliary Hydraulic Pressure Release Valve Test

Conduct a pressure check of the auxiliary hydraulic

pressure release valve circuit. Refer to Section 8.7,

“Hydraulic System Testing.”

WARNING: Hydraulic oil leaking under

pressure can penetrate the skin and cause

severe personal injury. DO NOT use your hand

or any part of your body to check for hydraulic

leaks. When checking for hydraulic leaks, wear

safety glasses and gloves to help provide

protection from spraying hydraulic oil. Use a

piece of cardboard or paper to search for

leaks.

MU3770

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