Instruction Manual
DHS-05 & DHS-1 Spreader - V1.4
www.durapac.com
Page 8 of 10
Problem
Cause
Solution
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
Spreader extends only
partially
Low or no hydraulic fluid in
pump reservoir
Fill and bleed the system
Load is above the capacity of
the system
Use the correct equipment
Sticking or binding cylinder
Check for dirt or leaks
Check for bent, misaligned, worn
parts or defective packings
Spreader moves slower
than normal
Loose couplers
Tighten couplers
Restricted hydraulic line or
fitting
Clean
Replace if damaged
Pump not operating correctly
Check pump’s operating
instructions
Repair or replace as necessary
Low fluid level in pump
reservoir
Fill and bleed the system
Leaking cylinder seals
Replace worn seals
Check for excessive contamination
or wear
Replace contaminated fluid as
necessary
