Skyjack Telescopic Boom SJ 86T

Extend the fly boom 1 ft (30) cm while on a firm, level surface

The steer axle should be locked

Drive one of the steer tires up onto a 6” (15 cm) block or curb

An appropriate tilt of the MEWP chassis should occur

Retract the fly boom while in tilt position

The steer axles should unlock and the MEWP chassis should level itself to the ground

Sign off on the Oscillating Axle Cylinders Testing

Remove the cover from the side of the engine

Inspect the oil cooler for leaks and physical damage

Clean the oil cooler of any kind of debris

Locate test port TP3 on the drive pump

Connect a pressure gauge (600 psi) to the test port

Start the engine from the base control console

WARNING! To protect the gauge, do not activate any controls during this procedure

Check the reading on the gauge. Standard pressure should be 313 ±31 psi

Is the standard pressure achieved?

Replace the charge pump relief valve RV10 4 if the standard pressure is not achieved

Repeat steps 2, 3, and 4 after the charge pump relief valve is replaced

Is the pressure in range after replacing the valve?

Warning: Do not inspect the fan belt while the engine is running. Remove the key to prevent accidental operation

For correct tension of the engine belt, refer to the engine manual

Sign off on the engine belt check

Locate the GP2 port on the main manifold

Connect a pressure gauge (5000 psi) to the GP2 port

Start the engine from the base control console and let it run for 2-5 minutes

Raise the main boom to ensure the basket will not contact the ground

Fully raise or lower the platform level and check the reading on the gauge

Locate the platform leveling relief valve RV3

Loosen the lock nut on the platform level relief valve RV3

Turn the adjusting stem clockwise to increase the pressure and counterclockwise to decrease the pressure