Page 216
December 2007
Telescopic Boom Series
Models SJ61T & SJ66T
194312
Section 5 - Procedures
Service and Maintenance
5.8-5 Turret Rotate Relief Valve
Adjustment
1. Locate the GP2 port on the main manifold.
2. Connect a pressure gauge (5000 psi) to the
GP2 port.
Main Manifold
3. Start the engine from the base control
console and let it run for 2-5 minutes.
4. Raise main boom to ensure basket will not
contact the ground.
5. Engage the turret transport lock.
6. Attempt to rotate turret. Pressure should be
1250 psi. Follow the next steps for adjusting
pressure if needed.
7. Locate turret rotate relief valve RV2.
8. Loosen lock nut on turret rotate relief valve
RV2. Turn adjusting stem clockwise to
increase pressure and counterclockwise
to decrease pressure.
9. Tighten lock nut on turret rotate relief valve
RV2 once 1250 psi is observed on the
gauge. You must activate turret rotate to
obtain pressure reading on gauge.
10. Disengage turret transport lock.
5.8-6 Platform Level Relief Valve
Adjustment
1. Locate the GP2 port on the main manifold.
2. Connect a pressure gauge (5000 psi) to the
GP2 port.
Main Manifold
3. Start the engine from the base control
console and let it run for 2-5 minutes.
4. Raise main boom to ensure basket will not
contact the ground.
5. Fully raise or lower platform level and check
reading on gauge. Pressure should be 3000
psi. Follow the next steps for adjusting
pressure if needed.
6. Locate platform leveling relief valve RV3.
7. Loosen lock nut on platform level relief
valve RV3. Turn adjusting stem clockwise
to increase pressure and counterclockwise
to decrease pressure.
8. Tighten lock nut on platform level relief
valve RV3 once 3000 psi is observed on
the gauge. You must fully raise or lower
platform level to activate pressure reading
on gauge.
RV2
Swing drive relief valve
RV3
Platform level
relief valve
GP2
GP2
Summary of Contents for SJ61T
Page 1: ...TELESCOPIC BOOMS MODELS SJ61T SJ66T 194312AE February 2017 SERVICE MANUAL...
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