Maintenance
Operation Manual - All
S
P Rock Valve Model
s
106
revD
a
te
•
Each day you should visually inspect the bolts
on the rock valve and the rubber rams. Notice
if there is any play. If you see something
suspicious, shut off the engine, put the key in
your pocket and remove the hopper grate or
waterbox covers and inspect with a wrench. If
you find that they are loose, tighten with a
torque wrench to the torque specifications
found on page 127 of the Appendix section of
this manual. Don’t forget to replace the hopper
grate and/or waterbox covers before using the
machine.
•
Grease the rock valve and agitator bearings.
This can be done on the job as described in the
Operation section of this manual beginning on
page 80, providing you have remembered to
bring your grease gun and grease tubes.
•
Visually inspect the unit for damage or leaks
each day. Repairs should be made before the
unit is operated.
•
Once a day you should check your
maintenance checklist to see if any weekly,
monthly, semiannual or annual maintenance is
due.
•
Check daily, the fluid level in the radiator. Add
50% water and 50% ethylene glycol if needed.
•
A heavy duty, dry air cleaner filters all of the
air entering the engine. Excessive restriction of
the air intake system reduces the flow of air to
the engine affecting horsepower output, fuel
consumption and engine life. An air restriction
indicator is installed in the air intake manifold.
Visually inspect the restriction indicator daily
to assure the filter is not restricted. Service the
air filter when the red diaphragm is exposed.
Press the reset button on the restriction
indicator after servicing the air filter.
Weekly Maintenance
•
Check the rock valve tension nut for play once
each week (Figure 48). To check this nut,
remove the 16mm keeper bolt, grasp the
tension nut by hand and turn clockwise. There
are many holes for the keeper bolt on the
spacer behind the tension nut. The object is to
place the keeper bolt in the furthest hole that
you can reach when you turn the tension nut
BY HAND. If the tension nut will only turn
enough to get part way to a new bolt hole, then
turn the it BACK to the previous hole. DO
NOT put a wrench on the tension nut to get it
to go to a new hole. Overtightening the tension
nut will cause premature wear on the kidney
seal. The tension nut adjusts the free play of
the rock valve on the kidney seal end. Wear on
the cutting ring end is compensated for
automatically by the pressure spring.
Replace and tighten the keeper bolt. You do
NOT have to tighten the keeper bolt according
to the torque specifications that normally are
used for that bolt size. Just be sure the bolt is
tight enough that it won’t fall out.
•
Check the hopper grate interlock switch to be
sure it is secure. Never put your hands, arms,
legs or any other body part into the hopper
while the hydraulic system is ready to operate
or without verifying zero pressure on the
accumulator. It is important that the switch be
checked on a regular basis to be sure that it is
functioning properly and that all mounting
screws are secure. If the screws are ever found
to be loose, they should be removed and
replaced using Loctite or other similar product
to assure they remain secure.
SWG98n245.eps
Spacer
Tension
Nut
Keeper
Bolt
Cover
Bolts (7)
Figure 48
Rock valve ten
s
ion nut a
ss
embly and
hou
s
ing cover bolt
s
.
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