GMC 4000 Series Service Manual page 300

Subject
Engine Maintenance and Tune-up
Engine R e p la c e m e n t.....................................................
Trouble Diagnosis Chart
TORO-FLOW DIESEL ENGINE
APPLICATION CHART
TRUCK SERIES
DLV. DLA 4000
EG5500
SG5500
EG6500
GENERAL INFORMATION
General engine maintenance includes serv ic­
ing engine accessories and components to assure
satisfactory, economical performance at all times.
ENGINE MAINTENANCE
SERVICING AIR CLEANERS
Engine air cleaners are oil bath type. Follow
the procedure given in applicable "Owner's and
D river's Manual" and to applicable portion of EN­
GINE FUEL SYSTEM (SEC. 6M) to maintain air
cleaners in serviceable condition.
The air filter (fig. 1) in ventilation tube should
be inspected and cleaned periodically.
W A RN IN G
USE E X T R E M E
SURE THAT ALL V O L A T IL E C L E A N ­
ING F L U ID (GASOLINE,
ETC.) IS R EM O V ED FRO M AIR C L E A N ­
ER AT T IM E OF C LEA N IN G . UNCON­
T R O L L E D F U EL EN T ER IN G THE C O M ­
BUSTION C H A M B E R IN THIS M AN N ER
CAN CAU SE THE
AW AY" AND PO SSIBLY DESTROY IT­
SELF AND ALSO CAUSE INJURY TO
PERSONNEL.
G M C S E R V I C E M A N U A L
SECTION 6B
jbieA el ^ n a in e
Contents of this section are listed in Index below:
GMC ENGINE
DH478
DH478
DH478
DH478
CAUTION TO BE
KERO SEN E,
ENGINE TO "RUN
Page No.
.............................
...........................................
Since the equipment used with various truck models
is somewhat varied, reference must be made to
applicable maintenance paragraphs in this manual
for service instructions for servicing air cleaners,
fuel filters, and crankcase ventilation system . In
addition to service described, the engine should be
p recisely tuned at regular intervals, following the
procedure given later under "Engine Tune-up
Operations."
To analyze problems related to fuel system ,
make reference to "Fuel System Trouble Diagnosis
Chart" in "FUEL INJECTION SYSTEM" (SEC. 6M)
in this manual for symptoms, causes, and rem ­
edies for various problems.
ENGINE OIL FILTER ELEMENT
Oil filter element changing periods are related
to crankcase oil changing periods, the quality of
oil used and severity of service. Element is re­
placeable paper type. To replace element, proceed
as follows:
1. Remove drain plug and loosen bolt which
holds filter shell on base. Allow oil to drain out of
filter.
2. Remove shell and element as an assembly
by removing bolt which is screwed into filter base.
3. Withdraw element from shell and discard
element. Clean shell assembly and remove gasket
from base at engine.
4. Install new element in filter shell, then fill
shell with new engine oil and install the shell and
element assembly on engine using new gasket. This
procedure assures lubrication to engine as soon as
engine is started. Tighten filter bolt to 45 foot­
pounds and check drain plug for tightness.
5. Check crankcase oil level and add oil if
necessary.
Sec. 6B
Page 289
289
294
303