JLG 600SC_660SJC Service Manual - Manual (Page 129)

SECTION 6 - UNDERCARRIAGE
3120898 – JLG Lift – 6-25
Recoil Spring Assembly
1. Check the condition of the threads on retaining rod
(12), nut (7), and nut (8). If any of the threads are
worn or damaged, use new parts for replacement.
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 SPRING PRESSURE IS 3000 PSI (20,700 KPA).
2. Loosely assemble the recoil spring assembly. Install
retaining rod (12) in plate (11), in spring (10) and in
support (9).
3. Install tooling (C) on tooling (B), as shown.
NOTE: Two adjustable supports (1), reaction plate (2) and
movable plate (3) are part of tooling (A).
4. Position two supports (1) of tooling (A) in order to
support the recoil spring assembly. Make sure the
two supports are level.
5. Adjust the spacing between reaction plate (2) and
movable plate (3) so the spacing is approximately
the same length as the recoil spring assembly.
Table 6-10. Recoil Spring Required Tools - Assembly
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