Manitowoc Grove GRT9165, Service Manual

Page: 176 / 302

6-16
Published 10-01-2020 Control # 699-00
SWING SYSTEM GRT9165 SERVICE MANUAL
lb to 443.5 ft-lb). Refer to Fasteners and Torque Values ,
page 1-16 for proper torque.
3. Position retainer plate on hydraulic swivel spool
ensuring they engage the lugs on the carrier frame.
NOTE: Allow a 1/32” max gap between bolt and retaining
lug on frame. Do not tighten bolt against lug.
4. If removed, apply Loctite® 271 to bolt threads. Secure
retainer plate with four capscrews and two bolt retainers.
Torque bolts to 270 N-m (199 lb-ft). Bend retainer tabs to
make contact with bolt heads. Snug four retainer plate
bolts against lugs on carrier frame. Tighten locknuts.
5. Connect swivel linkage assembly (10) to plate (9) with
capscrew (14), washer (15), locknut (16). Torque the
locknut to 150.2 N-m to 158.1 N-m (110.8 ft-lb to
116.6 ft-lb).
6. Install electrical swivel if removed. Refer to Electrical
Swivel in this Section. Connect swivel wiring harness
connectors to carrier receptacles and yellow ground wire
to mounting bracket on carrier frame. Reuse previously
removed bolt and star washers. Refer to Grove
Engineering Specification 6829100386 for proper
electrical termination of grounds.
7. Install clamp, washer, flatwasher, and capscrew to
bottom of swivel retainer plate securing wiring harness.
8. Connect hydraulic lines to spool of hydraulic swivel as
tagged during removal.
9. Connect hydraulic lines to hydraulic swivel case as
tagged during removal.
10. Connect water lines to water swivel case as tagged
during removal.
11. Remove blocking material from lift cylinder.
12. Activate all systems. Cycle all functions and observe for
proper operation and any leakage.
TWO PORT WATER SWIVEL
Description
The two port water swivel allows engine coolant to flow from
the carrier-mounted engine to the hot water heater in the
operator’s cab. Coolant is transferred to a circumferential
groove on the water spool exterior through an internally
drilled passage in the 12 port hydraulic swivel spool. This
groove corresponds with a mating port on the outer case of
the water swivel. Spool grooves are separated by a quad
ring/Teflon bronze ring seal. The lip seal prevents coolant
from leaking externally. Return engine coolant flow from the
hot water heater is accomplished in the same manner
through the opposite port of the water swivel.
Maintenance
Removal
1. Perform steps 1 thru 4 of Hydraulic Swivel , page 6-15 -.
2. Remove electrical swivel. Refer to Electrical Swivel ,
page 6-17.
3. Tag and disconnect lines from the case of the water
swivel. Cap or plug all lines and openings.
4. Remove screw and shim(s) from water/hydraulic swivel
keying lugs.
5. Remove four capscrews and washers securing water
swivel and electrical swivel center post to hydraulic
swivel. Remove water swivel and center post.
Disassembly
NOTE: Any maintenance requiring disassembly of the
water swivel should include replacement of all
seals and rings.
1. Withdraw the spool from the case.
2. Place spool on a clean work surface in a dust-free area.
Block spool to prevent movement during disassembly.
NOTE: Aligning discarded seals and rings in order of
disassembly will assist with installation of new
seals and rings.
3. Remove seals and rings from spool.
Cleaning and Inspection
1. Clean spool and case with a suitable solution and dry
with compressed air. Plug all ports with plastic caps.
2. Check spool and inside of case for scratches, grooves,
scoring, etc. If any grooves have developed with a depth
of 0.127 mm (0.005 in) the unit should be replaced.
CAUTION
When removing seals and rings, avoid scratching
grooved and gland surfaces. Damage to spool may result
in unexpected operation.
WARNING
Cleaning solvents can be toxic, flammable, an irritant to
the skin, or give off harmful fumes. Avoid prolonged skin
contact, inhalation of vapors, or smoking. Always use
approved safety equipment; gloves, face masks, and eye
wear. Failure to comply can result in injury or death to
personnel.