Service Manual User Manual

Section 2
2-22
Fresh Air Intake Filter
Periodically remove the cab rear panel and inspect the
fresh air intake filter (Fig. 2–17). The filter must be
cleaned sometimes as often as twice a day, depending
on the operating environment. This is done by removing
the filter and shaking it. Pressurized air can also be used
to blow out dust. The filter will clean outside air when
pressurizing the cab. The filter should be replaced when
required.
Note: Correctly position the filter so the air flow is
directed into the cab.
Figure 2–17. Periodically remove and inspect
the recirculation air filter.
2.12.5 Engine Cooling System
A. Engine Coolant Level Check (10 Hour Intervals)
Figure 2–18. Check the engine coolant level every
10 hours of engine operation.
1. Level the vehicle, ground the attachment, place the
travel select lever in NEUTRAL (N), engage the
parking brake switch and shut off the engine.
2. Unlatch, unlock and open the engine cover.
3. Check the coolant level in the overflow bottle (Fig. 2–19).
When the coolant is hot, the bottle should be half to
three-quarters full. When the coolant is cool, the
bottle should be one-quarter to half full. Add coolant
(use a 50/50 mixture of ethylene glycol and water) as
required through the overflow bottle.
Figure 2–19. Check the coolant level in the overflow bottle.
B. Drain and Flush the Radiator
Figure 2–20. Drain and flush the radiator
every 2,000 hours of engine operation.
1. Level the vehicle, ground the attachment, place the
travel select lever in NEUTRAL (N), engage the
parking brake switch and shut off the engine.
2. Unlatch, unlock and open the engine cover. Allow the
engine to cool before proceeding. Draining and
flushing the cooling system while the engine is hot
can cause cracks in the engine block.
3. Slowly turn the radiator cap to the first stop and allow
any pressure to escape. Remove the radiator cap.
OS1790
Filter Latch
Filter
Latch
Note Direction
of Air Flow
REAR OF CAB with REAR PANEL REMOVED
10
OS0800
MS2140
WARNING: DO NOT attempt this procedure
when the engine is hot. Wait for the engine,
muffler, and tailpipes to cool down before pro-
ceeding. Failure to do so could result in severe
burns.
WARNING: NEVER remove the radiator cap
while the engine is hot. The cooling system is
under pressure. Hot coolant can cause severe
burns or eye injury. Wear protective clothing
and safety glasses.
OS0481
Radiator Cap
Radiator
Coolant
Overflow
Bottle
Radiator Drain Plug
0002
OS0810MS3000
Model 3606
•
Origin 10/99