14-114-1TX / TXH / TXB 180S - 400L (Rev. 4/23/07)TX / TXH / TXB 180S - 400L (Rev. 4/23/07)
( , , , )( , , , )
Introduction.Introduction. The drive The drive axle is axle is equipped withequipped with
double reduction double reduction gearing. gearing. The first The first gear reductiongear reduction
is a hypoid is a hypoid type ring gear type ring gear and pinion. and pinion. The secondThe second
reduction is in the form of planetary gears insidereduction is in the form of planetary gears inside
the hubs. the hubs. This arrangement This arrangement permits the permits the axleaxle
shafts and hypoid gearing to carry only a nominalshafts and hypoid gearing to carry only a nominal
torsional load while providing the highest practicaltorsional load while providing the highest practical
gear reduction at the wheels.gear reduction at the wheels.
Checking Lube Oil LevelChecking Lube Oil Level(Illustrations 14-1 and(Illustrations 14-1 and
14-2)14-2).. The oil in the differential and the planetaryThe oil in the differential and the planetary
hubs should be checked periodically (refer to thehubs should be checked periodically (refer to the
Preventive MaintenancePreventive Maintenancechart in thechart in the Appen-Appen-
dicesdicesfor oil for oil level inspection level inspection interval). interval). Perform thePerform the
following procedures to check the oil level andfollowing procedures to check the oil level and
service the differential and planetary hubs:service the differential and planetary hubs:
Death or serious injury couldDeath or serious injury could
result from result from a runaway truck. a runaway truck. Park the truck Park the truck onon
a hard, level surface, apply the parking brake,a hard, level surface, apply the parking brake,
block the wheels in both directions to preventblock the wheels in both directions to prevent
movement of the truck and Lock movement of the truck and Lock Out & Tag OutOut & Tag Out
the truck before servicing the drive axle.the truck before servicing the drive axle.
1.1. DiDiffffererenentitialal
a.a. ParPark the tk the trucruck on a k on a hardhard, le, level svel surfurfaceace,,
block the wheels in both directions, applyblock the wheels in both directions, apply
the parking brake and Lock Out & Tag Outthe parking brake and Lock Out & Tag Out
the truck.the truck.
b.b. CheCheck tck the oihe oil levl level in tel in the dihe diffffereerentintial byal by
removing the fill plug.removing the fill plug.
c.c. The oThe oil leil level svel shoulhould be ed be even wven with tith the bohe bot-t-
tom of tom of the fill the fill plug hole. plug hole. Add oil asAdd oil as
required.required.
d.d. ReRe-i-insnstatall tll the fhe filill pll plugug..
2.2. PlPlananetetarary Huy Hubsbs
a.a. ManManeuveuver ther the true truck uck untintil the dl the drairain plun plug ong on
one of the planetary hubs is in theone of the planetary hubs is in the
3 o’clock (PRC-785 drive axle) or 9 o’clock3 o’clock (PRC-785 drive axle) or 9 o’clock
(PRC-1756 drive axle) position of hub rota-(PRC-1756 drive axle) position of hub rota-
tion (see Illustrations 14-1 and 14-2).tion (see Illustrations 14-1 and 14-2).
b.b. ParPark the k the trutruck on ck on a hara hard, led, level svel surfurfaceace,,
block the wheels in both directions, applyblock the wheels in both directions, apply
the parking brake and Lock Out & Tag Outthe parking brake and Lock Out & Tag Out
the truck.the truck.
c.c. RemRemove ove the the dradrain in pluplug. g. The The oil oil levlevelel
should be even with the bottom of theshould be even with the bottom of the
drain plug drain plug hole. hole. Add oil Add oil as required.as required.
d.d. ReRe-i-insnstatall tll the dhe drairain pln plugug..
e.e. RepReposiositiotion the n the trutruck as ck as necnecessessary aary andnd
service the hub on the opposite end of theservice the hub on the opposite end of the
axle by repeating the above procedures.axle by repeating the above procedures.
Changing The OilChanging The Oil(Illustrations 14-1 and 14-2)(Illustrations 14-1 and 14-2)..
The oil in the differential and planetary hubsThe oil in the differential and planetary hubs
should be changed periodically (refer to theshould be changed periodically (refer to the Pre-Pre-
ventive Maintenanceventive Maintenancechart in thechart in the AppendicesAppendices
for drive axle differential and planetary hubs oilfor drive axle differential and planetary hubs oil
change intchange intervals). ervals). Refer Refer to theto the Fuel andFuel and
Lubricant SpecificationsLubricant Specifications in thein the AppendicesAppendicesforfor
the type of the type of oil to be used oil to be used in the drive axle. in the drive axle. Per-Per-
form the following procedures to change the oil inform the following procedures to change the oil in
the drive axle:the drive axle:
1.1. DiDiffffererenentitialal
a.a. ParPark thk the true truck on ck on a hara hard, led, level svel surfurfaceace,,
block the wheels in both directions, applyblock the wheels in both directions, apply
the parking brake and Lock Out & Tag Outthe parking brake and Lock Out & Tag Out
the truck.the truck.
b.b. ProProvidvide a suite a suitablable conte containainer to caer to catch drtch drainain--
ing oil. ing oil. Then, remove Then, remove the diffthe differential drainerential drain
plug and fill plug.plug and fill plug.
c.c. OncOnce the oie the oil has cl has compompletletely dely drairainedned, ins, instaltalll
the differential drain plug and fill withthe differential drain plug and fill with
recommended lubricant (refer to therecommended lubricant (refer to the FuelFuel
and Lubricant Specificationsand Lubricant Specificationsin thein the
AppendicesAppendices) even with the bottom of the) even with the bottom of the
fill plug hole.fill plug hole.
d.d. ReRe-i-insnstatall tll the fhe filill pll plug.ug.
2.2. PlPlananetetarary Huy Hubsbs
a.a. PosPositiition thon the true truck so tck so that that the drhe drain plain plugug
for one of the planetary hubs is at thefor one of the planetary hubs is at the
6 o’clock position of hub rotation.6 o’clock position of hub rotation.
b.b. ParPark thk the true truck on ck on a hara hard, led, level svel surfurfaceace,,
block the wheels in both directions, applyblock the wheels in both directions, apply
the parking brake and Lock Out & Tag Outthe parking brake and Lock Out & Tag Out
the truck.the truck.
c.c. ProProvidvide a se a suituitablable coe contantaineiner to r to catcatchch
draining oil and then remove the draindraining oil and then remove the drain
plug.plug.
d.d. OncOnce the oie the oil has col has complmpleteetely drly drainained, poed, posi-si-
tion the truck so that the drain plug is in thetion the truck so that the drain plug is in the
3 o’clock or 9 o’clock position of hub rota-3 o’clock or 9 o’clock position of hub rota-
tion (see tion (see Illustrations 14-1 Illustrations 14-1 and 14-2). and 14-2). FillFill
the hub with recommended oil (refer to thethe hub with recommended oil (refer to the
Fuel and Lubricant SpecificationsFuel and Lubricant Specificationsin thein the
AppendicesAppendices) until the oil level is even) until the oil level is even
with the bottom of the drain plug hole.with the bottom of the drain plug hole.
Re-install the drain plug.Re-install the drain plug.
e.e. FolFollow tlow the abohe above prove procedcedureures for ses for servirvicincingg
the hub on the other side of the drive axle.the hub on the other side of the drive axle.
Draining The Hydraulic Fluid From The Draining The Hydraulic Fluid From The BrakeBrake
HousingsHousings (Illustrations 14 1 and 14 2)(Illustrations 14 1 and 14 2) TheThe
To Next Page
Loading...
