Instruction Manual
DHS-15 Spreader - V1.4
www.durapac.com
Page 7 of 8
7.0
Troubleshooting
Problem
Cause
Solution
Spreader moves but
does not maintain
pressure
Leaking connection
Clean, reseal with thread sealant and
tighten connection
Leaking cylinder seals
Replace worn seals
Check for excessive contamination or
wear
Replace contaminated fluid as
necessary
Malfunctioning
pump/valve
Check pump or valve operating
instructions
Repair or replace as necessary
Spreader leaks
hydraulic fluid
Worn or damaged seals
Replace worn seals
Check for excessive contamination or
wear
Replace contaminated fluid as
necessary
Loose connections
Clean, reseal with thread sealant and
tighten connection
Spreader will not
retract or retracts
slower than normal
Closed pump release valve
Open pump release valve
Loose couplers
Tighten couplers
Blocked hydraulic lines
Clean and flush lines
Weak or broken retraction
springs
Send to a Durapac authorised service
centre for repair
Internally damaged
cylinder
Send to a Durapac authorised service
centre for repair
Pump reservoir too full
Drain hydraulic fluid to correct level
Erratic Action
Air in system or pump
cavitation
Add fluid, bleed air and check for leaks
External leakage
Replace worn packings
Check for excessive contamination
fluid as necessary
Replace contaminated fluid as
necessary
Sticking or binding cylinder
Check for dirt or leaks
Check for bent, misaligned, worn parts
or defective packings
Spreader does not
move
Loose couplers
Tighten couplers
Faulty coupler
Verify that female coupler is not locked
up (ball wedged into seat)
Replace both male and female couplers
Improper valve position
Close release valve or shift to new
position
Low or no hydraulic fluid in
pump reservoir
Fill and bleed the system
Air-locked pump
Prime pump according to pump
operating instructions
Pump not operating
Check pump’s operating instructions
Load is above the capacity
of the system
Use the correct equipment
