ROUBLESHOOTING
T
10
208743 Rev. 1
Hydraulic Oil
Cascade attachments are compatible with SAE 10W
petroleum base oil per Mil. Spec. MIL-0-5606 or MIL-0-
2104B.
Use of synthetic or aqueous base hydraulic oil is not
recommended. Contact Cascade if fire resistant
hydraulic oil must be used.
4.1 General Procedures
4.1-1 Truck System Requirements
• The lift truck must supply sufficient hydraulic pressure
to handle the heaviest load. PRESSURE MUST NOT
EXCEED 2600 (180 bar).
• Hydraulic flow should be within the volume range
shown.
• The truck hydraulic system must supply hydraulic oil to
the attachment that meets the specifications shown.
4.1-2 Tools Required
In addition to a normal selection of hand tools, you will
need:
• An inline flow meter capable of measuring hydraulic
flow to 20 GPM (80 L/min), Cascade part no. 671477
• A pressure gauge capable of measuring pressure to
3500 psi (240 bar), Cascade part no. 671212.
4.1-3 Troubleshooting Chart
Get 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 with
the operator. Ask for a complete description of the
malfunction.
Fork Position Circuit
• Forks will not move.
• Forks move slowly. Normal speed is 4 in. (100 mm)
per second.
To correct one of these problems, see Section 4.3
Sideshift Circuit
• Attachment will not sideshift.
• Attachment sideshifts slowly.
To correct one of these problems, see Section 4.4
WARNING: Before servicing any
hydraulic component, relieve system
pressure in the system. Turn the truck
off, and open the truck auxiliary valve(s)
several times in both directions.
After completing any service procedure, always test
the function through several cycles. First test the
attachment empty to bleed air trapped in the system
to the truck system. Then test the attachment with a
load to be sure it operates correctly before returning
it to the job.
Stay clear of the load while testing. Do not raise the
load more than 3 in. (75 cm) off floor while testing.
Truck Flow Volume
55F 100F/120F
Minimum 3 GPM (11 L/min.) 4 GPM (15 L/min.)
Recommended 4 GPM (15 L/min.) 5 GPM (19 L/min.)
Maximum 5 GPM (19 L/min.) 6 GPM (23 L/min.)
Truck Relief Setting
Minimum – 2300 psi (160) bar
Maximum – 2600 psi (180) bar
Flow Meter Kit 671477
(2) No. 6-8 JIC Reducer
Flow Meter
(2) No. 8-12 JIC/
O-Ring
Pressure Gauge Kit 671212
* Not included in Pressure Gauge Kit part no. 671212.
Pressure
Gauge
No. 6 and No. 8
JIC Swivel Tee
No. 4-6 Pipe/JIC
No. 6-6 Hose
*No. 6 JIC/
O-Ring
No. 6-8 JIC
Reducer
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