CAT Articulated Truck 725 Specifications Page 18
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SEBU8524 119
Maintenance Section
Crankshaft Vibration Damper - Inspect
It is necessary
to remove the alternator, the
bracket for the alternator, and the drive belt. These
components must be removed in order to allow the
removal of the
water temperature regulator housing.
Refer to Disassembly and Assembly, SENR9537 for
the removal procedures for these components.
Replace the water temperature regulators while the
cooling system is completely drained or while the
cooling sys
tem coolant is drained to a level that is
below the water temperature regulator housing.
Refer to Ope
ration and Maintenance Manual,
“Cooling Syatem Coolant - Change” for information
on draining the cooling system.
NOTICE
Failure to replace the engine's water temperature reg-
ulator on a regularly scheduled basis could cause se-
vere engi
ne damage.
NOTICE
The water temperature regulators may be reused if the
water temperature regulators are within test specifica-
tions, are not damaged, and do not have excessive
buildup of deposits.
NOTICE
Since Caterpillar engines incorporate a shunt design
cooling system, it is mandatory to always operate the
engine with a water temperature regulator.
Depending on load, failure to operate with a water
temperature regulator could result in either an over-
heating or an overcooling condition.
NOTI
CE
If the water temperature regulator is installed incor-
rectly, it will cause the engine to overheat.
i03
579907
Cranksh aft Vibration Dam per
-I
nspect
SMCS Code: 1205-040
Park the machine on a level surface. Ensure that
the parking brake is fully engaged. Lower the truck
b
ody or OEM attachment and shut off the engine.
Raise the hood. Refer to Operation and Maintenance
Manual, “Hood Control”.
g01127166
Illustration 139
The crankshaft vibration damper can be viewed from
the right side of the engine compartment.
Damage to the vibration damper or failure of the
vibration damper will increase torsional vibrations.
These vibrations will result in damage to the
crankshaft and other engine components. A
deteriorating vibration damper will cause excessive
gear train noise at variable points in the speed range.
Caterpillar recommends replacing the vibration
damper for any of the following reasons.
•
The engine has had a failure because of a broken
crankshaft.
•
The S·O·S analysis detected a worn crankshaft
front bearing.
•
The S·O·S analysis detected a large amount of
gear train wear that is not caused by a lack of oil.
Continue to use the crankshaft vibration damper
if none of the above conditions are found or if the
damper is not damaged.
Refer to the Disassembly and Assembly, SENR9537,
“Crankshaft Vibration Damper and Pulley - Remove
and Install” in order to replace the vibration damper.
- MAINTENANCE INTERVALS 1
- Operation and 2
- Maintenance 2
- Maintenance Interval Schedule 3
- Autom atic Lubrication Grease 5
- Tank - Fill 5
- (If Equipped) 5
- Grease Recommendations 6
- Backup Alarm - Test 7
- Battery - Recycle 7
- Battery or Battery Cable 7
- Inspect/Replace 7
- Body Pivot Bearings 8
- Brake Pads - Check 9
- Brake System Air - Pu rge 10
- Braking System - Test 11
- Illustration 126 12
- Illustration 127 12
- Illustration 128 12
- Circuit Breakers - R eset 13
- Cooling System Coolant (ELC) 13
- Illustration 131 14
- Illustration 132 14
- Illustration 130 14
- Coo ling System Coo lant 15
- Extender (ELC) - Add 15
- - C heck 15
- Illustration 135 16
- Illustration 137 17
- Illustration 138 17
- Cranksh aft Vibration Dam per 18
- - Change 19
- Level - C h eck 20
- Illustration 146 21
- Inspect/Repl 22
- Engine Air Filter Primary 23
- Element-C 23
- Engine Air Filte r Secon dary 24
- Element - Replac e 24
- Engine Cran kcase Breather 24
- Engine Oil L evel - Ch eck 25
- Engine Oil Sampl e - Obtain 25
- Illustration 156 28
- Illustration 157 28
- Illustration 158 28
- Engine Valve L ash - Check 29
- Ether Starting Aid Cylinder 30
- (OEM Attachmen t if Equipped) 30
- Front Frame 31
- Front Suspension Frame 31
- Oscillating Hitch 31
- Rear Frame 32
- Rear Frames 32
- Dump Body 32
- Radiator Mounts 32
- Mounts for the Suspension 32
- Fuel Sy stem 33
- Fuel System Primary Filter 34
- Illustration 170 35
- Illustration 171 35
- Fuel Syst 36
- Fuel Tank Cap and Strainer 36
- Fuel Tank Water and Sediment 37
- Fuses - Re place 38
- Hoist C ylinder Bearing s 39
- Lubricate 39
- Illustration 178 40
- Illustration 179 40
- Illustration 180 40
- Hydrauli 41
- Hydraulic System Oil Level 42
- Hydrau lic System Oil Samp le 43
- Hydrau lic Tank Breat her 43
- Clean/Inspect/Replace 43
- Hydrau lic Tank Strainer 44
- Clean/Insp ec 44
- Oscillating Hi tch - Ad just 44
- Oscillating Hitch - Lubricate 45
- Radiator Core - Clea n 46
- Refrig erant Dryer - Replace 47
- Rollover Protective Structure 47
- (ROPS) - Inspect 47
- Seat Belt - Insp ect 49
- Seat Belt - Replace 49
- Secondary Steering - Test 49
- Steering Cylinder Bearings 50
- Suspension System - Check 51
- Suspension and Su spen sion 51
- Cylinder Bear 51
- Tire Inflation - Ch eck 52
- Torque Converter and 52
- Transmission O il - Change 52
- Illustration 213 53
- Illustration 214 53
- Illustration 215 53
- Ecology Dr ain 54
- Transmission 55
- Oil Filter 55
- Oil Level 56
- Torque Con 57
- Transmission O il S ample 57
- Illustration 224 58
- Illustration 225 58
- Tran sfer G ear Oil Filter 59
- Illustration 230 60
- Illustration 229 60
- Transfer Gear Oil Samp le 61
- Illustration 232 62
- Illustration 233 62
- Illustration 234 62
- Windows - Clean 63
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