![Manitowoc Grove YB5515-2 Скачать руководство пользователя страница 94](http://html.mh-extra.com/html/manitowoc/grove-yb5515-2/grove-yb5515-2_service-and-maintenance-manual_701236094.webp)
GROVE
Published 1-20-2017, Control# 483-02
4-33
CD5515-2/YB5515-2 SERVICE MANUAL
HYDRAULIC SYSTEM
4
Hydraulic Cylinders
Removal
NOTE:
The following removal instructions are general and
should be modified to suit the cylinder being
removed. Telescope cylinder removal instructions
will be found in
, page 11-1. Steering
cylinder removal instructions can be found in
1.
Put a support under the component to which the cylinder
is fastened. Make sure the component can not fall after
the cylinder is removed.
2.
Stop the engine. Release the pressure in the cylinder
circuit by moving the control back and forth several
times.
3.
Disconnect the hydraulic lines from the cylinder. Put
caps on the hydraulic lines to keep dirt out of the system.
4.
Connect a hoist to lift the weight of the cylinder.
5.
Remove the cylinder mounting pins. Remove the
cylinder.
Disassembly
NOTE:
The following procedures gives general
instructions for repair of the hydraulic cylinders.
Refer to illustrations for relation of the component
parts.
Steering cylinder repair instructions can be found in
Steering System Section 10.
1.
Put the ports of the cylinder down to drain the oil from
the cylinder.
2.
Fasten the base of the cylinder in a vise with soft jaws.
Place a support under the rod so the cylinder is level.
3.
Use a spanner wrench to loosen and remove the head
gland. Slide the head gland forward on the cylinder rod.
4.
Pull the rod and piston straight out of the cylinder tube. If
necessary, use compressed air applied to the base port
of the cylinder to push the piston and rod out of the
cylinder tube.
5.
Fasten the eye of the rod in a vise with soft jaws. Put a
support under the opposite end of the rod to hold the rod
level. Use care not to cause damage to the chrome
surface of the rod.
6.
The piston is fastened to the rod either by internal
threads or with a locking nut. To remove the piston:
a.
On pistons with internal threads, remove the set
screw from the piston. Use a spanner wrench to
loosen and remove the piston.
b.
On pistons which are fastened with a locking nut,
use a socket wrench and extension to loosen the
nut.
7.
Remove and discard the seals and wear rings from the
piston.
8.
Remove and discard all seals, backup rings, wear rings,
etc. from the head gland.
Inspection
Wash the parts in a suitable solvent. Use compressed air to
remove all residue.
Check the bore of the cylinder tube for damage or distortion.
Move the piston through the full length of the cylinder and
check the clearance between the piston and the bore of the
cylinder. If there is damage or distortion, replace the cylinder
tube.
Look for damage to the chrome surface of the rod. The rod
must be smooth and straight. A bent rod indicates possible
loss of strength in the rod and replacement is necessary. If
the chrome surface has damage, completely remove the old
chrome and apply new chrome 0.03 mm (0.001 inch) thick.
Remove any rough edges on the piston to prevent damage
to new rings during installation.
Assembly
1.
Install new rings, rod wiper and seals on the head gland.
See cylinder illustrations for location and correct
installation.
2.
Apply hydraulic oil to the rod and slide the assembled
head gland on the rod.
3.
Assemble the rings and seals on the piston.
4.
Fasten the piston to the rod with locking nut and tighten
to specified torque. Be sure O-ring is installed between
the piston and the rod. On pistons with internal threads,
screw piston onto cylinder rod and install the set screw
to secure the piston on the rod.
5.
Apply hydraulic oil to the bore of cylinder and the rings
on the piston. Carefully slide the piston and rod into the
cylinder tube. Keep the rod straight during installation.
Use care not to damage the piston rings when you install
the piston through the threads in the bore of the cylinder
tube.
6.
Slide the head gland into the cylinder tube and tighten to
specified torque. See illustrations. If equipped, install the
set screw to secure the gland head in the cylinder.
Test
1.
Fill the cylinder with clean hydraulic oil. To test the piston
seal rings, continue to push oil into the rod end after the
cylinder has hit bottom. Test to pressure indicated in
Reference Only
Содержание Grove YB5515-2
Страница 1: ...Shuttlelift CD5515 2 Grove YB5515 2 Service Maintenance Manual R e f e r e n c e O n l y ...
Страница 2: ...This Page Blank R e f e r e n c e O n l y ...
Страница 12: ...TABLE OF CONTENTS CD5515 2 YB5515 2 SERVICE MANUAL TOC 8 This Page Blank R e f e r e n c e O n l y ...
Страница 292: ...R e f e r e n c e O n l y ...
Страница 293: ...R e f e r e n c e O n l y ...