1-19
1-19TX / TXH / TXB 180S - 400L (Rev. 4/23/07)TX / TXH / TXB 180S - 400L (Rev. 4/23/07)
PPrroobblleemm CCaauussee CCoorrrreeccttiioonn
111.1. CoolanCoolant temt tempera-pera-
ture is aboveture is above
normal (Gradualnormal (Gradual
Overheat)Overheat)
(Continued)(Continued)
16.16. RadiatRadiator core is internallor core is internallyy
obstructed or damaged.obstructed or damaged.
17.17. Engine is ovEngine is over–fueer–fueled.led.
16.16. InspeInspect the radiatct the radiator and clean ifor and clean if
necessary.necessary.
17.17. Check Check the futhe fuel ratel rate. e. Refer Refer to Prto Prob-ob-
lem 21. in this troubleshootinglem 21. in this troubleshooting
chart.chart.
12.12. CoolanCoolant temt tempera-pera-
ture is aboveture is above
normal (Suddennormal (Sudden
Overheat)Overheat)
1.1. CoCoololanant lt levevel iel is ls lowow..
2.2. Fan Fan dridrive ove or far fan con contrntrols ols are are malmal--
functioning.functioning.
3.3. Fan Fan dridrive bve belt elt is lis loosoose, be, brokroken, en, oror
not correctly aligned.not correctly aligned.
4.4. RadRadiatiator cor cap(ap(s) is) is incs incorrorrectect, ma, mal-l-
functioning, or has low-pressurefunctioning, or has low-pressure
rating.rating.
5.5. RadRadiatiator or hoshose ie is s colcollaplapsedsed,,
restricted, or leaking.restricted, or leaking.
6.6. CooCoolanlant tet tempemperatrature ure gaugauge is ge is malmal--
functioning.functioning.
7.7. ChaCharge arge air coir cooleoler finr fins, ras, radiadiator ftor finsins,,
or air conditioner condenser finsor air conditioner condenser fins
are damaged or obstructed withare damaged or obstructed with
debris.debris.
8.8. VVenent lit line ine is res reststririctcteded..
1.1. InsInspecpect tht the enge engine ine and cand coolooling sing sys-ys-
tem for external coolant leaks.tem for external coolant leaks.
Repair if Repair if necessarynecessary. . Add coolant.Add coolant.
2.2. CheCheck tck the fhe fan dan drivrive ane and fad fan con con-n-
trols.trols.
3.3. CheCheck bck belt elt tentensiosion and n and tigtightehten ifn if
necessary. necessary. Replace drivReplace drive belt e belt ifif
necessary.necessary.
4.4. ReReplplacace rae radidiatator cor capap(s(s).).
5.5. InsInspecpect tt the hhe hoseoses ans and red replaplace ace anyny
defective hoses.defective hoses.
6.6. TTest est the the temtemperperatuature gre gaugauge.e.
Replace the gauge if necessary.Replace the gauge if necessary.
7.7. InsInspecpect the ct the charharge aige air coor coolerler, rad, radia-ia-
tor, and air conditioner condensertor, and air conditioner condenser
fins. fins. Clean if Clean if necessarynecessary..
8.8. CheCheck vck vent ent linline foe for rer restrstrictictionion..
13.13. CoolanCoolant lost loss –s –
ExternalExternal
continuedcontinued
1.1. LoLow cw coooolalant lnt levevelel..
2.2. ExExteternarnal cl coooolalant nt leleakak..
3.3. RadRadiatiator cor cap(ap(s) is) is incs incorrorrectect, ma, mal-l-
functioning, or has low-pressurefunctioning, or has low-pressure
rating.rating.
4.4. RadRadiatiator or hoshose ie is s colcollaplapsedsed,,
restricted, or leaking.restricted, or leaking.
1.1. InsInspecpect tht the enge engine ine and cand coolooling sing sys-ys-
tem for external coolant leaks.tem for external coolant leaks.
Repair / replace damaged coolingRepair / replace damaged cooling
components. components. Add Add coolant.coolant.
2.2. InInspspecect the ent the engigine for cne for cooloolant lant leak-eak-
ing from hoses, draincocks, watering from hoses, draincocks, water
manifold, jumper tubes, expansionmanifold, jumper tubes, expansion
and pipe plugs, fittings, radiatorand pipe plugs, fittings, radiator
core, air compressor and cylindercore, air compressor and cylinder
head gaskets, lubricating oil cooler,head gaskets, lubricating oil cooler,
water pump seal, cylinder block, andwater pump seal, cylinder block, and
cab heatercab heater. . Repair / Repair / replace dam-replace dam-
aged components.aged components.
3.3. ReReplplacace rae radidiatator cor capap(s(s).).
4.4. InsInspecpect tt the hhe hoseoses ans and red replaplace ace anyny
defective hoses.defective hoses.
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