Maintenance
Operation Manual - All
S
P Rock Valve Model
s
116
revD
a
te
Un
s
cheduled maintenance
The following items will have to be maintained on your
pump. The time of service that you get from these parts
varies dramatically from unit to unit because of the
wide range of applications to which these machines are
subjected. Differences in concrete and pressure play a
major role in the wear of these components.
In
s
pecting hydraulic ho
s
e
s
Hydraulic hoses should be checked during routine
inspections. Check for damage to the outer layer or
fittings. For example; Wire reinforcement is exposed,
separation from the fitting, chafing, cuts, cracks, brittle
outer layer or any other type of deformation like layer
separation, blistering, crushing, corrosion, or kinking.
In addition check for leaking fittings or improper fit.
NOTE!
Hy
d
r
au
lic hoses sho
u
l
d
be re
p
l
a
ce
d
every six
years
to
av
oi
d
the
p
ossibility of
a
cci
d
ent
a
l
r
up
t
u
re
a
n
d
p
ossible
p
erson
a
l inj
u
ry. The
da
te of m
a
n
u
f
a
ct
u
re of
a
hy
d
r
au
lic hose c
a
n
be fo
u
n
d
st
a
m
p
e
d
into the hose fittin
g
.
Changing ram
s
When you begin to see not just cement dust in your
waterbox at the end of the day, but also small bits of
sand or even pebbles, it is time to change the rams.
NOTE!
W
hen ch
a
n
g
in
g
r
a
ms, yo
u
will h
av
e to
pu
t
yo
u
r h
a
n
d
s in the w
a
terbox on se
v
er
a
l
occ
a
sions. In the
pa
st, we instr
u
cte
d
yo
u
to
sto
p
the en
g
ine e
a
ch
a
n
d
e
v
ery time before
pu
ttin
g
yo
u
r h
a
n
d
s into the w
a
terbox,
a
n
d
we still hi
g
hly recommen
d
the
p
r
a
ctice.
Howe
v
er, If Yo
u
Insist On Ch
a
n
g
in
g
Ra
ms
W
ith The Motor
Ru
nnin
g
, Yo
u
M
u
st T
a
ke
The
F
ollowin
g
Prec
au
tions To A
v
oi
d
Am
pu
t
a
tion Of H
a
n
d
s, Arms An
d
F
in
g
ers:
•
Do Not Use The
R
emote Control
F
or This
Proce
du
re! Un
p
l
ug
It An
d
Store It.
•
Do Not Allow Anyone Else At The P
a
ssen
g
er
Si
d
e Controls
W
hen Yo
u
Are Ch
a
n
g
in
g
Ra
ms.
The chances of accidental amputation
are greatly increased if more than one person is
around. There are also less distractions when
you are alone, so your attention will not
become divided. If someone comes up, stop
working until they leave.
•
Reduce engine r.p.m. to absolute minimum,
and adjust the stroke limiter to minimum
strokes. The slower the hydraulic pumps are
turning, the slower the differential cylinder
rods will move. This buys extra time in case
the unexpected happens.
•
Where possible, use a nylon strap or towel to
remove and replace the dogbone and ram. This
will help to keep your hands out of the
waterbox as much as possible.
•
Please do not skip any of the above steps. If
you leave the engine running, you are already
skipping the one step that makes an accident
impossible.
Preparation for long term
s
torage
If the unit will be stored for long periods of time the
following precautions must be taken:
•
Fully retract both differential rod cylinders
•
Fill hydraulic reservoir to the base of the filler
neck
•
Drain fuel tanks
•
Disconnect the battery
•
Coat Rock Valve components with light weight
oil
NOTE!
Cont
a
ct Schwin
g
ser
v
ice for instr
u
ctions
Re
s
tarting unit after long term
s
torage
When the unit is being removed from long term
storage, precautions must be taken before restarting
using the following steps:
•
Restore differential cylinders to operating
position
•
Drain condensation from the hydraulic
reservoir
•
Be sure the level of hydraulic oil is at
appropriate level
•
Perform a complete visual inspection of entire
unit
•
Add fuel and reconnect the battery
•
Start engine and run at low RPM until unit
reaches operating temperature and cycle pump.
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