Page 2665 of 4179
PREPARATION
RFD-5
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RFD
Commercial Service ToolsEDS0027I
KV38108400
Pinion nut wrenchMeasuring preload
ST22360002
(J-25679-01)
Drift
a: 29 mm (1.14 in) dia.
b: 23 mm (0.91 in) dia.
c: 150 mm (5.91 in)Installing coupling front bearing Tool number
Tool nameDescription
ZZA1206D
ZZA0546D
Tool nameDescription
Flange wrench Removing and installing companion flange
lock nut
Power toolLoosening nuts and bolts
NT771
PBIC0190E
Page 2666 of 4179
RFD-6
NOISE, VIBRATION AND HARSHNESS (NVH) TROUBLESHOOTING
NOISE, VIBRATION AND HARSHNESS (NVH) TROUBLESHOOTINGPFP:00003
NVH Troubleshooting ChartEDS001Z1
Use the chart below to help you find the cause of the symptom. If necessary, repair or replace these parts.
×: ApplicableReference page
—
Refer to RFD-19, "
TOOTH CONTACT
" .
—
Refer to RFD-18, "
DRIVE GEAR TO DRIVE PINION BACKLASH
" .
Refer to RFD-19, "
COMPANION FLANGE RUNOUT
" .
Refer to RFD-8, "
Checking Differential Gear Oil
" .
NVH in PR section.
NVH in FAX, RAX, FSU and RSU sections.
NVH in WT section.
NVH in WT section.
NVH in FAX and RAX section.
NVH in BR section.
NVH in PS section.
Possible cause and SUSPECTED PARTS
Gear tooth rough
Gear contact improper
Tooth surfaces worn
Backlash incorrect
Companion flange excessive runout
Gear oil improper
PROPELLER SHAFT
AXLE AND SUSPENSION
TIRES
ROAD WHEEL
DRIVE SHAFT
BRAKES
STEERING
Symptom Noise×××××××××××××
Page 2667 of 4179
REAR FINAL DRIVE SYSTEM
RFD-7
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RFD
REAR FINAL DRIVE SYSTEMPFP:38300
Sectional ViewEDS001ZL
SDIA0141E
Page 2668 of 4179

RFD-8
DIFFERENTIAL GEAR OIL
DIFFERENTIAL GEAR OILPFP:KLD30
Changing Differential Gear OilEDS0027G
DRAINING
1. Stop engine.
2. Remove drain plug and drain oil.
3. Set a gasket on drain plug and install it to final drive assembly
and tighten to the specified torque. Refer to RFD-16, "
Compo-
nents" .
CAUTION:
Do not reuse gasket.
FILLING
1. Remove filler plug. Fill with new oil until oil level reaches the
specified level near filler plug mounting hole.
2. After refilling oil, check oil level. Set a gasket to filler plug, then
install it to final drive assembly. Refer to RFD-16, "
Components"
.
CAUTION:
Do not reuse gasket.
Checking Differential Gear OilEDS0027H
OIL LEAKAGE AND OIL LEVEL
Make sure that oil is not leaking from final drive assembly or around it.
Check oil level from filler plug mounting hole as shown in the fig-
ure.
CAUTION:
Do not start engine while checking oil level.
Set a gasket on filler plug and install it on final drive assembly.
Refer to RFD-16, "
Components" .
CAUTION:
Do not reuse gasket.
PDIA0454E
Oil grade and Viscosity:
Refer to MA-17, "
Fluids and Lubricants" .
Oil capacity:
Approx. 0.55 (1 Imp pt)
PDIA0453E
PDIA0453E
Page 2669 of 4179
FRONT OIL SEAL
RFD-9
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RFD
FRONT OIL SEALPFP:38189
Removal and InstallationEDS001Z2
REMOVAL
1. Remove propeller shaft. Refer to PR-4, "Removal and Installation" .
2. Put matching mark on the thread edge of electric controlled cou-
pling. The matching mark should be in line with the matching
mark on companion flange.
CAUTION:
For matching mark, use paint. Do not damage electric con-
trolled coupling.
3. Remove companion flange lock nut, using a flange wrench.
Then remove companion flange.
4. Remove front oil seal from coupling cover, using a flat-bladed
screwdriver.
CAUTION:
Be careful not to damage coupling cover.
INSTALLATION
1. Apply multi-purpose grease to front oil seal lips.
2. Install front oil seal until it becomes flush with the case end,
using the drifts.
CAUTION:
Do not reuse oil seal.
When installing, do not incline oil seal.
PDIA0455E
PDIA0456E
PDIA0457E
Tool number A: KV38100200
B: ST27861000
PDIA0038E
Page 2670 of 4179
RFD-10
FRONT OIL SEAL
3. Align the matching mark of electric controlled coupling with the
matching mark of companion flange, then install the companion
flange.
4. Install companion flange lock nut with a flange wrench, tighten
the to the specified torque. Refer to RFD-16, "
Components" .
CAUTION:
Do not reuse companion flange lock nut.
5. Install propeller shaft. Refer to PR-4, "
Removal and Installation"
.
PDIA0455E
Page 2671 of 4179
SIDE OIL SEAL
RFD-11
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RFD
SIDE OIL SEALPFP:38343
Removal and InstallationEDS001Z3
REMOVAL
1. Remove rear drive shaft with power tool. Refer to RAX-10, "REAR DRIVE SHAFT" .
2. Remove side oil seal, using a flat-bladed screwdriver.
CAUTION:
Be careful not to damage gear carrier and rear cover.
INSTALLATION
1. Apply multi-purpose grease to side oil seal lips.
2. Install side oil seal until it becomes flush with the case end,
using the drift.
CAUTION:
Do not reuse oil seal.
When installing, do not incline oil seal.
3. Install rear drive shaft. Refer to RAX-10, "
REAR DRIVE
SHAFT" .
PDIA0431E
Tool number : KV38100200
PDIA0432E
Page 2672 of 4179
RFD-12
ELECTRIC CONTROLLED COUPLING
ELECTRIC CONTROLLED COUPLINGPFP:38760
Removal and InstallationEDS0027J
REMOVAL
1. Remove propeller shaft. Refer to PR-4, "Removal and Installation" .
2. Put matching mark on the thread edge of electric controlled cou-
pling. The matching mark should be in line with the matching
mark on the companion flange.
CAUTION:
For matching mark, use paint. Do not damage electric con-
trolled coupling.
NOTE:
When replacing electric controlled coupling, matching mark is
not necessary.
3. Remove companion flange lock nut, using a flange wrench.
4. Remove companion flange.
5. Disconnect electric controlled coupling connector and remove
connector bracket.
6. Remove electric controlled coupling breather hose from cou-
pling cover.
7. Remove coupling cover with electric controlled coupling from
gear carrier.
8. Remove electric controlled coupling from coupling cover.
PDIA0455E
PDIA0456E
PDIA0458E