I
MPORTANT:
The troubleshooting and repair procedures listed below should only be
performed by qualified personnel familiar with this equipment. Use the proper equipment
when troubleshooting!
JAW/CYLINDER ASSEMBLY
PROBLEM
CAUSE
SOLUTION
I. Erratic Action
1. Air in system
A. Bleed* air and check for
leaks.
2. Internal leakage in
B. Replace worn packings.
cylinder
Check for excessive con-
tamination or wear.
3. Cylinder sticking or
C. Check for dirt, gummy
binding
deposits or leaks as above.
Check for misalignment,
worn parts or d defective
packing.
II. Cylinder does not
1. Pump release valve
A. Close release valve
advance
open
2. Low or no fluid in pump
B. Fill with fluid and bleed
reservoir
the system
3. Air locked pump
C. Bleed* the system
4. Loose couplers
D. Tighten couplers &
bleed*
5. Plugged hydraulic line
E. Rush and clean system
6. Pump not operating
F. See pump trouble-
shooting
7. Load is above the
G. Use other means for
capacity of the system
entry
I
II. Cylinder extends
1. Pump reservoir is low
A. Fill and bleed*
only partially
on fluid
2. Cylinder piston rod
B. Check for dirt, gummy
binding
deposits or leaks as above.
Check for misalignment,
worn parts or defective
packing
I
V. Cylinder advan-
1. Loose connection
A. Tighten and bleed*
ces slower than
normal
2. Leaky connection
B. Clean connection and
use a non-hardening pipe
thread compound or teflon
tape if needed
3. Restricted hydraulic line
C. Clean or replace if
or fitting
damaged.
4. Pump not working
D. See pump trouble-
correctly
shooting
5. Leaking seals
E. Replace seals
V. Cylinder advan-
1. Leaky connection
A. Clean connection and
ces but does not
use a non-hardening pipe
maintain pressure
thread compound or teflon
tape if needed
2. Cylinder seals leaking
B. Replace seals
3. Pump valve
C. See
pump trouble-
malfunctioning
shooting
159R064 Rev. 04
PROBLEM
CAUSE
SOLUTION
Vl. Cylinder leaks
1. Worn or damaged seals
A. Replace seals
fluid
2. Loose connections
B. Tighten fittings
Vll. Cylinder will not
1. Pump release valve
A. Open pump release
retract or retracts
closed
valve
slower than normal
2. Couplers not fastened
B. Fasten couplers
3. Blocked hydraulic lines
C. Clean and flush
4. Weak or broken retrac-
D. Send to service center
tion springsfor repair
5. Cylinder damaged
E. Send to service center
internally
for repair
6. Pump reservoir too full
F. Drain fluid to correct level
PUMP
PROBLEM
CAUSE
SOLUTION
Pump not delivering
1. Low fluid level in reservoir
A. Check fluid level per
instructions
2. Dirt in pump body
B. Disassemble pump body
and clean all parts
3. Seats worn and not
C. Reseat required seats in
seating properly
casting
4. Reservoir overfilled with
D. Check fluid level per
fluid
reservoir instructions
Pump losing
1. Fluid leaking past outlet
A. Reseat ball seat(s)
pressure
ball seat(s)
2. Pressure control knob
B. Reseat pressure control
leaks, not adjusted
assembly or replace
properly
assembly
Pump does not
1. Low fluid level
A. Check fluid level per
reach full pressure
reservoir instructions
2. Reservoir overfilled with
B. Check fluid level per
fluid
reservoir instructions
Handle raises after
1. Fluid leaking past outlet
A. Replace ball and /or
each stroke
ball seat(s)
reseat
Pump handle can be
1. The inlet ball is not
A. Check for dirt and or
pushed down
seating
reseat valve seat
(slowly) without
raising the load
Pump handle oper-
1. Air has been trapped in
A. Set Rabbit Tool
lower
ates with a spongy
the line
than the pump and extend
action
and return tool several
times
2. Reservoir overfilled with
B. Check fluid level per
fluid
reservoir instructions
*
BLEEDING THE SYSTEM
After all connections are made correctly, the hydraulic system should be bled. Relieve
pressure of the pump and loosen the fitting at the tool. Then activate the pump until fluid
spurts from the loose connection. Repeat this operation until a continuous clear flow of
hydraulic fluid is seen. Relieve pressure and tighten the loosened fitting. You must be sure
to refill the pump reservoir to the correct level.
With no load on the system and the pump higher than the tool, cycle the system several
times to remove any air which may be trapped in the system.
Hale Products, Inc., reserves the right to make changes at any time, without notice or obligation, in prices, materials,
equipment or specifications and to change or discontinue models. Check with distributor for current information.
TROUBLESHOOTING
