Section 1: Assembly & Set-Up
4/11/19
AP-SGM1566, AP-SGM1572, & AP-SGM1578 Grapples 380-051MK
13
Check Equipment Clearances
It is important to check clearance before putting grapple
into operation. Make sure hoses are long enough and
won’t become pinched or entangled in the equipment.
Also, make sure the grapple does not come in contact
with skid steer/tractor frame and tires by carefully going
through its full range of motions.
1.
Visually inspect hydraulic hoses for possible pinch
points and shortness. Make hose adjustments before
putting equipment into service.
2.
Start skid steer/tractor and raise grapple
approximately 12" off the ground.
3.
If necessary, have someone stand nearby that can
motion for the operator to stop if a problem develops
while completing steps 4-7 below.
4.
Fully extend hydraulic cylinder to pivot upper fork fully
down.
5.
Fully extend and retract hydraulic cylinder on end of
loader arms while watching for interferences
between skid steer/tractor and grapple frame. Make
sure hydraulic hoses are long enough and do not
become pinched through the full range of motion.
6.
Fully retract hydraulic cylinder to pivot grapple fork
fully up and repeat step 5.
7.
Raise grapple fully up and repeat steps 4-6.
Purging Hydraulic System
1.
With grapple raised off the ground about 12", cycle
grapple hydraulic cylinder several times from fully
extended to fully retracted.
Refer to Figure 1-5 on page 12
2.
If cylinder operates unevenly after cycling it several
times, then purge the system as follows:
a. Loosen elbow fitting (#2) at rod end of hydraulic
cylinder (#1).
b. Slowly retract and extend hydraulic cylinder to
purge any trapped air from the system.
c. Tighten elbow fitting (#2) to hydraulic
cylinder (#1) once all trapped air is removed.
IMPORTANT:
