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Jerr-Dan LIGHT DUTY - Troubleshooting

Jerr-Dan LIGHT DUTY
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TROUBLESHOOTING
PROBLEMS ENCOUNTERED WHILE UNIT IS IN TRANSIT
PROBLEM CAUSE SOLUTION
Looseness and rattling
8.
Loose Hold Down Blocks a. Snug bkM::ks
aoainst
llange
of doel<
01
"I" beam and tighten.
b. RoUbacl<Cylinder Support b. Snug rubber boling agaInsl
not adjusted property cyII1der barrel and t~t8n.
b. Reset to coned setting us-
ing gauga
c. Inspect and replace
d. Inspect and roplaco
a. Aecent.r load posstlll
a. Engaga
FreQspoomg device dis.
engaged
b. Insuffk:ient Relio' Valve
pressure
c. Sheared keys or broken
chain at coupli1g
d. Hydraulic pump wom
8.
Off centered load
Cable buid-up en one
side 01spoot or other
WINCH FUNCTIONING IMPROPERLY
WIlch screeches during a.
Insufficient IlJbricalion
a.
Lubri:ale
per
lube
chart
operallon
Wnch wlU
nol
pull 50ad a.
on deck
VALVE BANK FUNCTIONING IMPROPERLY
VaJv. bypasses oU or
a.
Insufficient reDet valve
set. B.
Reset 10
cornet seUng us.
squeols dumg aI opera. ling ilg gaugo
dons b. Broken reDel
spring
b. Inspect and replace
Valvo handk>sslick, •. Insufflclanllubrlcation a. Lubricala par
ka
chart
Iig1t or frozen b. Brokan cenlorlng spmg or b. Inspect. cIoan or raplaca
clogged wllh dirt al bottom
of spool
Valve JeaksaI top or a. Defective seals a. Replace
bottom of spools
CYLINDERS FUNCTIONING IMPROPERLY
Cy&lders leak oil a. CelecUv8 seals or rod a. Inspect and rep&ace
Erratic operation of a. A~ In hydraulic system a. Cycle hydraulic systam
10.
cytInders . 15 tines to romoYe air
b. Dolectlvo pump (Pulsating) b. Replaca I nec•••• ry
HYDRAULIC SYSTEM FUNCTIONING IMPROPERLY
Slow Operallon 8. Low angine
RPM
a. Spaod up englne
b. low oU
level
b. ResolVolr should be 3/4 full
wIIh cylmors rellllClod
c. Blocked, restricted or col. c. Inspect, remove bkM:kage
lapsed hoses
or reposiion hoses affected
d. Dirty hydraulic oil
d. Orakl, llush and re1ll wllh
clean 011
9. Hydraulic pump wom
8. Rebuild or replace
t.
Relief valve ~ valve bank f.
1) Reset to coned pres.
bypassng
sure
usi'lg
gauge
2) Check
if
refiel
sprilg
Is
broken. Replace
tf
necessary
Rev. _
3.3
Date _
Eastern Wrecker Sales Inc