Manitowoc Grove GRT9165 Service Manual

2-49
GROVE
GRT9165 SERVICE MANUAL HYDRAULIC SYSTEM
2
Published 10-01-2020 Control # 699-00
Removal
1. Start the engine and fully retract the telescope the lift
cylinders using the joysticks. Use the RCL override
function to fully retract the lift cylinder.
2. Shut off engine.
3. Tag and remove hoses.
Installation
1. Check inside of port block or manifold for sharp edges or
burrs. Remove as necessary with emery cloth.
2. Install new O-rings on telescope cylinder valve.
3. Lubricate telescope cylinder valve O-rings with clean
hydraulic oil.
NOTE: Telescope cylinder valve should turn by hand until
O-rings compress.
4. Install the hoses as tagged.
5. Test the telescope cylinder valve and port block or
manifold by operating lift cylinder and/or telescope
cylinder, as applicable. Verify lift cylinder and/or
telescope cylinder works without problems; verify there
is no leaking. Make repairs as needed.
WARNING
Falling Boom
Never remove a telescope cylinder valve from the lift or
telescope cylinder circuits without first fully retracting the
cylinders. Death or serious injury can occur.
WARNING
High Hydraulic Pressure
Never remove a telescope cylinder from the lift or
telescope cylinder circuits without first fully retracting the
cylinders to remove the high hydraulic pressure in the
circuits. Fluid in these hydraulic systems can be under
enough pressure that it will penetrate the skin, causing
serious injury or death.
CAUTION
Do not damage O-rings during telescope cylinder valve
installation. If holding valve turns freely then hard to turn,
then easy to turn, remove telescope cylinder valve and
check O-rings. They have probably been damaged by a
sharp edge of a port.

Manitowoc Grove GRT9165 Specifications

General

Brand	Manitowoc
Model	Grove GRT9165
Category	Construction Equipment
Language	English