Vestil LLH-202053-FW handleiding
Handleiding
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Table of Contents Rev. 8/15/2023 LLPH MANUAL
Table of Contents Copyright 2020 Vestil Manufacturing Co. Page 21 of 29
TROUBLESHOOTING
Fully lower the deck before beginning maintenance work on the lifter. If an issue with your lifter is not
addressed in the table below, contact Vestil for answers.
Issue / Problem
Possible Causes
Suggested Corrective Action
1. I pump the pedal, but
the deck does not rise;
-OR-
I can move the pedal
with very little force.
A. Oil not getting through the pump because
i) too little oil in reservoir or ii) pump is air-
locked.
B. Relief valve is opening.
C. Foreign material holding inlet check valve
open.
D. Foreign matter in release valve.
A. i) Check oil level in reservoir.
ii) Bleed air from hydraulics. See Remove air
trapped inside hydraulic system, p. 22.
B. Verify that load does not exceed lifter’s
maximum rated load. See Specifications on p. 2
or 3.
C. Remove material from inlet check valve
assembly. See Cleaning the Inlet Check Valve
Assembly, p. 22; diagrams on pp. 23, 24, 25, 26.
D. Disassemble release valve and clean the
components. See Release valve assembly, p. 24.
2. Deck rises during pedal
down stroke, but lowers
during pedal upstroke.
A. Foreign material preventing outlet-check
from closing.
A. Clean outlet check assembly
3. Deck rises but does not
maintain raised position
(slowly returns to lowered
position over time).
A. Foreign material holding outlet-check
open
B. Foreign material holding relief-valve open
C. Foreign material holding release-valve
open
A. Disassemble and clean the outlet check
valve components.
B. Disassemble and clean the relief-valve
components.
C. Disassemble and clean the release-valve
components.
4. Deck rises when pedal
pumped, but in smaller
increments than normal.
A. Foreign matter holding open relief valve.
B. Foreign matter holding inlet check valve
open.
C: Foreign matter holding outlet check open.
A. Disassemble and clean the relief valve
components.
B. Disassemble and clean inlet check valve
parts. See Cleaning the Inlet Check Valve
Assembly, p. 22; diagrams on pp. 23, 24, 25 & 26.
C. Clean outlet check assembly.
5. Great effort required to
operate foot pump.
A. Operating pressure exceeds the pump’s
force capability.
A. Reduce load weight.
6. Deck will not lower.
A. Release pedal screw out of adjustment.
B. Pedal not properly positioned on release
cam.
C. Pedal lock-screw not tight.
D. Release cam broken.
E. Debris obstructing flow control.
F. Internal components missing.
G. Something preventing deck cam roller
bearing(s) from rolling
A. See Release pedal adjustment, p. 22.
B. Pedal lock screw must be seated into the
mating detent on the release-cam.
C. The screw must be snug against the release
cam to prevent it from rotating relative to the
cam during use.
D. Replace broken components.
E. Flush the jack assembly and add fresh
hydraulic fluid.
F. Study applicable Exploded View (p. 5-17);
replace and install components as indicated.
G. Inspect frame for obstructions interfering with
roller bearing movement; remove obstruction(s).
7. Deck lowers
maddeningly slowly when
release pedal pressed.
A. Release pedal screw improperly adjusted.
B. Pedal not properly positioned on release
cam.
C. Pedal lock screw not tight.
D. Release cam broken.
E. Debris obstructing flow control.
A. See Release pedal adjustment, on p. 22.
B. Pedal lock screw must be seated in the
mating detent on the release-cam.
C. The screw must be snug against the release
cam to prevent it from rotating relative to the
cam during use.
D. Replace broken components.
E. Flush jack assembly and install new fluid.
8. Deck lowers too quickly.
A. Release pedal screw out of adjustment.
B. Pedal lock-screw not properly positioned
on release cam.
A. See Release pedal adjustment procedure on
p. 22.
B. Pedal lock screw must be seated into the
mating detent on the release-cam.
9. Deck lowers in jerks.
A. Air trapped in hydraulic system.
B. Oil level too low.
A. Bleed air from system. See Remove air
trapped inside hydraulic system, p. 22.
B. Add oil to hydraulic reservoir.
Bekijk gratis de handleiding van Vestil LLH-202053-FW, stel vragen en lees de antwoorden op veelvoorkomende problemen, of gebruik onze assistent om sneller informatie in de handleiding te vinden of uitleg te krijgen over specifieke functies.
Productinformatie
| Merk | Vestil |
| Model | LLH-202053-FW |
| Categorie | Niet gecategoriseerd |
| Taal | Nederlands |
| Grootte | 11991 MB |
