JLG 600SC_660SJC Service Manual - Manual (Page 126)

SECTION 6 - UNDERCARRIAGE
6-22 – JLG Lift – 3120898
11. Install spring pin (1). The illustration above shows
the positioning of the slit in spring pin (1).
12. Install the shaft and the bearing in the front idler.
13. Repeat step 10 in order to install the bearing on the
opposite side of the shaft (4).
14. Be sure that the spring pin hole in the shaft is
aligned with the spring pin hole in the bearing.
NOTE: Do not reuse spring pin (1). Use a new part for
replacement.
15. Install spring pin (1).
16. Check the front idler for air leaks. Apply 36 to 37 psi
(245 to 256 kPa) of air pressure to the idler for 30
seconds. If the pressure remains constant for 30
seconds, assume that there are no leaks in the front
idler.
17. Put the front idler in a vertical position. Fill the front
idler with 5.07 oz. of clean SAE30 oil.
18. Put a thin coat of thread lock compound on the
threads of the fill/drain plug. Install the fill/drain plug.
Recoil Spring Disassembly
PERSONAL INJURY OR DEATH CAN RESULT FROM RECOIL
SPRING FORCE.
RECOIL SPRING FORCE, IF NOT RELIEVED, CAN RESULT IN
PERSONAL INJURY OR DEATH.
RELIEVE SPRING FORCE BEFORE REMOVING THREADED
RETAINER, PERFORMING REPAIRS ON RECOIL SPRING HOUS-
ING, OR REMOVING RECOIL SPRING.
MAXIMUM RECOIL PRESSURE IS 3,000 PSI (20,700 KPA).
Table 6-9. Recoil Spring Required Tools - Disassembly
Tool Part # Description Qty.
A 4C-9540 Bench 1
B 8S-7172 Hydraulic Cylinder 1
3S-6224 Electric Hydraulic Pump 1
8T-0820 Pressure Gauge 1
3B-7722 Bushing 2
1P-2376 Coupler Assembly 2
1P-2377 Plug 2
8F-0024 Hose Assembly 2
C 8S-9971 Ram Adapter 1
D 9U-6545 46mm Socket 1
Figure 6-9. Recoil Spring Assembly