Manitowoc Grove RT765E-2 Service And Maintenance Manual

HYDRAULIC SYSTEM RT765E-2 SERVICE MANUAL
2-80
Published 9-04-2014, Control # 422-08
Assembly
NOTE: Lubricate seals and rings with clean light hydraulic
oil.
1. Install the rod seal and wiper ring in the inside of the
head and the o-ring and backup ring on the outside of
the head.
2. Install the wear ring and piston seal on the outside of the
piston.
3. Clean all oil from the threads of the head. Coat the
threads with an anti-seize compound (ex: Never-Seez
paste lubricant or similar lubricant).
4. Slide the head onto the rod. The head will have to be
tapped on with a rubber mallet to engage the seals.
Push the head about half way down the length of the rod
assembly.Install the spacer and piston onto the rod.
5. Install the locknut on the rod.
6. With the hoist, raise the rod assembly back into a
vertical position taking care not to damage the OD of the
seals on the head and piston.
7. Remove the cover from the barrel.
8. Lubricate the OD of the seals on the piston and head
with clean light hydraulic oil and lower the assembly into
the barrel. Stop just before the head enters the barrel.
9. Place the spanner wrench on the head and turn
counterclockwise until the thread clicks, then reverse
direction to clockwise and thread in until there is no gap
between the should of the head and the top of the barrel.
10. Pressurize and cycle the cylinder with hydraulic oil
pressure. Test the cylinder at 3500 psi (24,120 kPa).
Check for proper operation and any leakage. Make
repairs as needed.
11. Install the port plugs.
12. Pressurize and cycle the cylinder with hydraulic oil
pressure. Static pressure test the cylinder at 3500 psi
(24,120 kPa) in both directions. Check for proper
operation and any leakage. Make repairs as needed.
CAUTION
When installing new seals and rings, avoid stretching
seals or scratching the grooved or gland surfaces. Make
sure parts are clean before and during assembly. Make
sure seals and rings are installed in the proper order.
CAUTION
Exercise extreme care when handling the rod. Damage to
the rod surface may cause unnecessary maintenance
and expense. Also, take care to avoid damaging grooved
or gland surfaces or rings or seals during rod insertion.
CAUTION
Do not use air pressure to cycle or pressurize the cylinder.
Damage to the seals may result.
Reference Only

Manitowoc Grove RT765E-2 Specifications

General

Brand	Manitowoc
Model	Grove RT765E-2
Category	Construction Equipment
Language	English