MAINTENANCE
Daily (Start of Each Shift)
1. Inspect the cooling system for leaks; correct the
cause for any leaks.
A~ ~.~[e:~.,~ Avoid
injury from escape of hot coo-
lant from radiator. Do not remove
pressure cap while engine is hot. After engine is cool,
proceed as follows:
--Place a heavy cloth or other protective covering over
cap.
--Without pressing down, slowly turn cap counter-
clockwise until it stops at safety detent.
--Wait a few minutes to allow residual pressure (indi-
cated by hissing sound) to escape completely.
--When all hissing stops, depress cap, turn counter-
clockwise, and remove.
2. Check the coolant level:
a) Remove the pressure cap from the radiator (see
Figure 3).
b) Fill the radiator with a solution of clean, soft water
and anti-freeze or rust inhibitor until the solution
is up to the bottom of the filler neck (approxi-
mately one inch from top of radiator if not
equipped with filler neck).
c) Securely reinstall the pressure cap.
NOTE Refer to the Engine Manual or the local engine
distributor for anti-freeze and rust inhibitor
recommendations.
Figure
3 Coolant Fill
Monthly
Check the tension of the fan and water pump belts.
1. The best tension for the belts is the lowest tension at
which the belts will not slip with the engine running at
maximum speed.
If a belt slips, tighten it.
2. Check new belts frequently during the first day of
operation.
3. Too much tension will shorten the life of the belts and
bearings.
4. Keep the belts and sheaves free of any foreign mate-
rial that may cause them to slip.
Semiannually
(Spring and Fall)
1. Inspect the thermostat and the pressure cap for
proper operation. The thermostat should open at
approximately 175-185 psi. The pressure cap should
open at approximately 7 psi. Replace either if defective.
2. Inspect all cooling system hoses. Replace any hose
that feelsabnormally hard or soft.
3. Tighten all hose clamps.
4. Install the proper fan for the season: the summer fan
blows out; the winter fan draws in.
NOTE On some cranes, the fan must be removed to
install the correct one. On other cranes, the
blades are adjustable.
5. Clean all dirt and other debris from the outside of the
radiator core.
6. Check that the overflow tube (Figure 3) is open.
7. Drain and refill the cooling system:
a) Remove the pressure cap from the radiator.
b) Open the drain on the radiator, the engine, each
heat exchanger, and the water pumps (Figure 4).
c) Wait until all coolant has drained.
d) Flush the cooling system if needed (see Engine
Manual for recommendations).
e) Install new coolant filters or conditioners, if
equipped.
f) Close all drains.
g) Fill the radiator (see DAILY step 2.b).
h) Securely reinstall the pressure cap on the radiator.
i) Run the engine for about 10 minutes (coolant at
normal operating temperature).
j) Recheck the coolant level (see DAILY step 2).
iMPORTANT on VlCON cranes, air must be bled
from water pump (Figure 4) for heat exchangers. Open
plug or valve at top of water pump. When a steady stream
of coolant appears, close plug or valve.
(Continued)
FOLIO 188-2
e
395143
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