Grove Published 11-10-2014, Control # 524-00 2-99
RT880E SERVICE MANUAL HYDRAULIC SYSTEM
3. Install the O-ring and backup ring onto the outside of the
head.
4. Install the O-ring in the inside of the piston.
5. Lubricate the rod with clean hydraulic oil.
6. Slide the head, larger OD end first, onto the rod.
7. Install the piston onto the rod. Secure the piston with the
nut. Lubricate the threads and torque the nut to 130 ± 5
lb-ft (176.2 ± 6.7 Nm).
8. Install the seal on the outside of the piston.
9. Lubricate all parts freely with clean hydraulic oil.
10. Remove the cover from the barrel. Insert the rod and
attached parts into the barrel with a slight twisting
motion.
11. Push the head into the barrel. Torque the head 20 lb-ft
(27.1 Nm).
12. Pressurize and cycle the cylinder with hydraulic oil pres-
sure. Test the cylinder at 3000 psi (20,684 kPa). Check
for proper operation and any leakage. Make repairs as
needed.
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.
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