the forks don't lower.
C - If the jack don't descend when control lever (part # 1) is in the LOWER position, turn the nut (part # 18)
clockwise until raising the control lever (part # 1) lowers the forks. Then check the DRIVE position according to
item A and B to be sure the nut (part # 18) is in the proper position.
D - If the jack don't elevate while pumping in the RAISE position, turn the nut (part # 18)
counter-clockwise until the jack elevate while pumping in the RAISE position. Then check the
LOWER and DRIVE position according to item A,B, & C.
Maintenance and repair
T
ROUBLESHOOTING
G
UIDE
--
______
Warning: Before performing any task, always block drive wheel off of the ground.
Consult the factory for problems at time of installation, or for any problems not addressed below.
Problem: Possible
cause(s): Action:
Lifting height is not longer achieved
Hydraulic oil level is too low
Re-fill hydraulic oil when carriage is
all the way down.
Unit jerks when lifting
Air in the system
Open vent screw on the lift cylinder
with carriage lowered all the way
down. Lift carriage with vent screw
open until oil is free from air bubbles.
Close the vent screw
Carriage can’t be lifted up
Without hydraulic oil
Oil has impurities
Fill the oil
Change the oil
Carriage can’t be lowered
Oil has impurities
Piston rod & pump body is deformed.
Change the oil and clean drift valve
Replace piston rod or pump body
Oil leakage
Seals worn, cracked or damaged.
Replace with new one.
Summary of Contents for DRUM-55-S
Page 8: ...PARTS DRAWING...