
Troubleshooting
4.1 General Procedures
A WARNING: Before servicing any hydraulic
component, relieve pressure in the system.
Fully extend the faceplate, turn the truck off
and open the truck auxiliary valves several
times in both directions.
After completing any service procedure, always test
the function through several cycles. First test the at-
tachment empty to bleed air trapped in the system to
the truck tank. Then test the attachment with a load to
be sure it operates correctly before returning to the
job.
Stay clear of the load while testing. Do not raise the
load more than 3 in. (75 cm) off the floor while testing.
4.1-1Truck System
Requirements
l The lift truck must supply sufficient hydraulic pressure to
handle the heaviest load, PRESSURE MUST NOT
EXCEED 2300 psi (160 bar).
l Hydraulic flow should be within volume range shown.
. The truck hydraulic system must supply hydraulic oil to
the attachment that meets the specifications shown.
4.1-2 Tools Required (Metric)
In addition to a normal selection oimetric hand tools you
will need:
l A pressure gauge capable of measuring pressure to
2500 psi (175 bar), Cascade part no. 671212.
l An inline flow meter capable of measuring hydraulic flow
to 20 GPM (80 L/min), Cascade part no. 671477.
4.1-3Get All The Facts
It is important that you gather all the facts regarding the
problem before you begin service procedures. The best
way is to talk to the operator. Ask for a complete descrip-
tion of the malfunction. The following guidelines will help
you decide where to begin your troubleshooting proce-
dures.
l Forks will not move.
l Forks move slowly. Normal speed is 4 in. (100mm) per
second.
For help with one of these problems, see Section 4.3.
l Attachment will not sideshift
l Attachment sideshifts slowly.
For help with one of these problems, see Section 4.4
Truck Relief Setting
2000 psi (140) bar - Recommended
2300 psi (160) bar - Maximum
Truck Flow Volume
3 GPM (1lL/mrn.) - Minimum
8 GPM (30 L/min.) - Recommended
IO GPM (37 L/min.) - Maximum
Hydraulic Oil
Cascade attachments are compatible with SAE
IOW petroleum base oil per Mil. Spec. MIL-0-5606
or MIL-O-2104B.
Use of synthetic or aqueous base hydraulic oil is
not recommended. Conact Cascade if fire
resistant hydraulic oil must be used.
Flow Meter Kit 671477
(2) No. 8-12
JICIO-Ring Flow Meter
IB” E!jTfibm I3
(2) No. 6-8 JIC Reducer
Pressure Gauge Kit 671212
Pressure No. 6 and No. 8
Gauge No. 6-6 Hose JIC Swivel Tee
No. 4-6 Pipe\/JIC No. 6-8 JIC
Reducer *No. 6
JIG/O-Ring
*Not included in Pressure Gauge Kit part no. 671212
200396 Rev.0