Manitowoc Grove RT880E User Manual

Grove Published 11-10-2014, Control # 524-00 2-83
RT880E SERVICE MANUAL HYDRAULIC SYSTEM
2
Assembly
1. If removed, install the holding valve. Refer to Valves,
page 2-31.
NOTE: Lubricate new seals and rings with clean hydraulic
oil. Orient wear ring gaps 180° apart.
2. Install the wiper rings and wear ring on the inside of the
cylinder head.
3. Install the buffer seal assembly and nylatron backup
rings on the inside of the cylinder head.
4. Install the rod seal inside the head. Make sure the seals
are properly assembled and installed in the correct
direction Figure 2-47.
5. Install the O-ring and backup rings onto the outside of
the head.
6. Install the cylinder head onto the cylinder rod.
7. Install the spacer onto the cylinder rod.
8. Install the O-ring and backup rings into the inside of the
piston.
NOTE: Use a new self-locking soft-tip setscrew.
9. Screw the piston onto cylinder rod and secure with a
new setscrew.
10. Install the guide lock rings and hydrolock seals onto the
outside of the piston Figure 2-48.
11. Install the wear ring on the outside of the spacer.
12. Clean all oil from the threads of the cylinder head and
apply Loctite #290 to the threads.
13. Lubricate the piston seals and cylinder head O-ring with
clean hydraulic oil and install the rod assembly into the
cylinder barrel with a slight twisting motion.
14. Using a chain wrench, secure the cylinder head to the
cylinder barrel.
15. Install the retaining plate to the cylinder barrel and
secure with the capscrews and washers. Torque the
capscrews 88 to 96 lb-ft (120 to 130 Nm).
CAUTION
Do not scratch the grooved and gland surfaces or
damage the seals and O-rings.
Item Description
1 Wear Ring
2O-ring
3 Backup Ring
4 Buffer Seal
5 Backup Ring
6 Rod Seal
7 Backup Ring
8 Wiper Ring
CAUTION
Improper seal installation could cause faulty cylinder
operation.
1
2
3
6
FIGURE 2-47
3
4
5
7 8
6488-4
Item Description
1 Setscrew
2 Guide Lock Ring
3 Wear Rings
4 Guide Lock Ring
5 Hydrolock Seals
6O-ring
7 Backup Ring
CAUTION
Do not scratch the grooved and gland surfaces or
damage the seals and O-rings.
FIGURE 2-48
2
3
4
5
1
6489
6
7
7

Manitowoc Grove RT880E Specifications

General

Brand	Manitowoc
Model	Grove RT880E
Category	Construction Equipment
Language	English