Engine Rebuild Guide, Break-In and Tune-Up
02
010
18
DPSG,OUO1004,920 –19–09JUL99–1/1
Check Air Intake System
RG8717A –UN–12JUL99
Unloader Valve
RG8719A –UN–12JUL99
Restriction Indicator Gauge
A—Unloader Valve
B—Restriction Indicator Gauge
1. Replace air cleaner primary filter element. Replace
secondary element if primary element has holes in it.
(See REPLACING AIR CLEANER FILTER ELEMENTS
in operator’s manual.)
2. Check condition of air intake hose(s). Replace hoses
that are cracked, split, or otherwise in poor condition.
3. Check hose clamps for tightness. Replace clamps that
cannot be properly tightened. This will help prevent
dust from entering the air intake system which could
cause serious engine damage.
4. If air cleaner has an automatic dust unloader valve (A),
inspect valve for dust buildup or restrictions.
5. Check air intake restriction indicator gauge (B) (if
equipped) to determine if air cleaner needs to be
serviced.
RG,RG34710,1057 –19–23OCT97–1/1
Check Exhaust System
1. Inspect exhaust system for leaks or restrictions. Check
manifold for cracks. Repair or replace as necessary.
2. Check that turbocharger-to-exhaust elbow adapter
clamps are securely tightened and do not leak.
3. Check exhaust stack for evidence of oil leakage past
valve stem seals.
Oil in exhaust stack may be caused by excessive valve
stem-to-guide clearance or excessive light load engine
idling.
CTM100 (06APR04)
02-010-18
P
OWER
T
ECH
10.5 L & 12.5 L Diesel Engines
040604
PN=66
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