SECTION VII
OUTRlGGER SYSTEM
3. Block the outrigger box so it will not drop when
7. Install packing (14) on metal pistons (6) and (3) and
cylinder-to-box pin (14) IS removed. Remove the keeper
lubricate the pistons with clean hydraulic oil.
plate from the cylinder-to-box pin.
NOTE
4. Tap out cylinder-to-box pin (14) and remove the vertical
lift cylinder.
Vee's of the packing must point away from the direc-
tion of pressure to induce flaring.
DISASSEMBLY. To disassemble the vertical lift cylinder
proceed as follows (see Figure 7-7):
8. Install O-ring (11) in the counterbore of the piston.
9. Place O-ring (10) between the pistons.
NOTE
10. Slide the assembled pistons onto the rod assembly.
The lock valve on the cylinder is not a serviceable
item. If the valve does not function properly, it must
11. Install elastic stop nut (151 and tighten securely.
be replaced with a new lock valve.
12. Using a suitable lifting device, insert the rod assembly
1. Remove capscrews (14) and lockwashers (15).
into cylinder (5).
2. slide retainer (13) and piston rod assembly (5) from the
NOTE
cylinder bore.
Be sure hole in stuffing box (4) lines up with the hole
3. Remove capscrew (7) and socket head capscrews (4)
in body (1).
from piston head (6).
13. Install fitting (16).
4. Slide piston head (6) off piston rod assembly (5).
14. Coat threads of the cartridge nut with lubricant. Screw
5. Remove retainer (13) from piston rod (5).
cartridge nut (5) to the cylinder, and tighten it securely
against the stuffing box.
6. Remove snap ring (19), washer (18) and U-cup packing
with filler ring (17).
15. Replace setscrew (17) and tighten securely.
7. Remove wiper seal (16) and O-ring (12).
INSTALLATION. To install the extension cylinders,
INSPECTION. Inspect the disassembled cylinder for evi-
proceed as follows:
dence of excessive wear or scoring.
1 Slide the cylinder into the outrigger beam, and insert the
Inspect all parts for cracks or distortions. Replace parts
pin that connects the cylinder to the outrigger.
which are questionable and renew all seals. If the cylinder
rod or body is damaged, the entire cylinder should be
2. Using a suitable lifting device, slide the outrigger beam
replaced.
into the outrigger box. lnsert the pin, which connects the
cylinder to the outrigger box.
ASSEMBLY. To assemble the verticle lift cylinder, proceed
3. Connect the hydraulic lines to the cylinder.
as follows (see Figure 7-7):
1. Coat the new O-rings with dean oil to ease assembly.
VERTICAL LIFT CYLINDER (100J4298)
2. Install O-ring (12) in its groove, on retainer (13). Install
REMOVAL. To remove the vertical lift cylinder, proceed
wipe ring (16).
as follows (see Figure 7-8):
3. Install U-cup packing with filler ring (17). washer (18).
1. Disconnect the two adapter unions at the lock valve.
and snap ring (19). as shown in Figure 7-7.
Cap a plug the coupling ends to avoid excess hydraulic
4. Slide this retainer assembly onto piston rod (5).
fluid loss and entry of dirt.
5. Install O-ring (11) in its O-ring groove.
2. Install a suitable eyebolt in the top of the cylinder to
suspend the cylinder from a suitable lifting device, Remove
6. Install back-up ring (10) and O-ring (9). The O-ring
capscrews (12) which hold trunnion pin (11) in place.
should be closest to the chamfered edge.
Remove cylinder trunnion pin (11) by installing a 5/8-inch
bolt of suitable length in the tapped hole in the center of
7. Insert the U-cup pecking with filler ring (2) on the
the trunnion pin. Tightening the bolt will jack the trunnion
piston heed. Install retainer (3) and fasten it with socket
pin from the cylinder.
head capscrews (4).
7-8
