Isuzu N-Series. Service manual — part 363
6A3-104 ENGINE (4HF1 / 4HF1-2 / 4HE1-TC / 4HG1 / 4HG1-T)
CRANKSHAFT REAR OIL SEAL
Component
Removal
Preparation
• Disconnect battery ground cable.
1. Transmission Panel
2. Starter
1) Disconnect the battery cable at the starter mo-
tor.
2) Remove the starter assembly from flywheel
housing.
3. Transmission Assembly
Legend
1. Transmission panel
5. Driven plate
2. Starter
6. Flywheel assembly
3. Transmission assembly
7. Crankshaft rear oil seal
4. Clutch pressure plate assembly
8. Crankshaft rear slinger
N6A1639E
N6A0582E
ENGINE (4HF1 / 4HF1-2 / 4HE1-TC / 4HG1 / 4HG1-T) 6A3-105
Above works refer to “ENGINE ASSEMBLY” sec-
tion in this manual.
4. Clutch Pressure Plate Assembly
5. Driven Plate
6. Flywheel Assembly
Above works refer to “FLYWHEEL AND PILOT
BEARING” section in this manual.
7. Crankshaft Rear Oil Seal
Caution:
Be careful not to damage the crankshaft oil seal contact
surface during the removal procedure.
8. Crankshaft Rear Slinger
Use the slinger puller to pull out the slinger.
Slinger Puller: 5-8840-2360-0
Installation
1. Crankshaft Rear Slinger
Press in the slinger using oil seal setting tool kit.
• Insert the slinger (1) into the end of adapter (2)
and install the adapter on the crankshaft.
• Cover the sleeve (3) and tighten the bolt until
the sleeve comes to contact the adapter stop-
per (4).
Legend
1. Washer
2. Pilot bearing
N6A6504E
N6A0429E
Legend
1. Oil seal
2. Slinger
3. Felt
N6A0430E
N6A0618E
6A3-106 ENGINE (4HF1 / 4HF1-2 / 4HE1-TC / 4HG1 / 4HG1-T)
• Make sure of measurements specified in the il-
lustration as well as of slinger deflection.
(A): 17.3
± 0.3 mm (0.681 ± 0.012 in)
(B): 10.8
± 0.1 mm (0.425 ± 0.004 in)
Notice:
Be sure to replace the slinger and oil seal as a set.
Oil Seal Setting Tool Kit: 5-8840-2431-0
Rear slinger and oil seal setting tools
2. Crankshaft Rear Oil Seal
1) Apply engine oil to the lip of the oil seal.
2) Press in the oil seal using rear oil seal setting
tool kit.
• Remove the slinger sleeve and insert the oil
seal (4) into the adapter (2).
• Install the adapter ring into the sleeve.
• Install the oil seal sleeve (1) to the adapter (2)
and tighten the center bolt until the sleeve
comes to contact the adapter stopper (3).
Part Name
Stamp
Slinger
Oil Seal
Adapter
RR
❍
❍
Sleeve
RR
❍
❍
Oil seal adapter ring
RR
❍
Center bolt
—
❍
❍
Adapter bolt
—
❍
❍
Adapter bolt collar
RR
❍
❍
N6A0619E
N6A0620E
Legend
1. Crankshaft
2. Slinger
3. Adapter bolt
4. Sleeve
5. Adapter
6. Collar
7. Center bolt
N6A0621E
N6A0622E
ENGINE (4HF1 / 4HF1-2 / 4HE1-TC / 4HG1 / 4HG1-T) 6A3-107
• Make sure of the measurements specified in
the illustration.
(A): 7.8
± 0.3 mm (0.307 ± 0.012 in)
3. Flywheel Assembly
1) Apply a coat of molybdenum disulfide grease to
the flywheel bolt threads and setting faces.
2) Align the flywheel with the crankshaft knock pin
and temporarily tighten the flywheel bolts.
3) Use the crankshaft stopper to prevent the
crankshaft from turning.
Crankshaft Stopper: 5-8840-2230-0
4) Install the washer and the flywheel bolts and
tighten to the specified torque in numerical or-
der show in the illustration.
Tighten:
Flywheel bolt to
• 1st step: 78 N
⋅m (8.0 kg⋅m/58 lb⋅ft)
• 2nd step: 90 — 120
°
5) Remove the crankshaft stopper.
4. Driven Plate
5. Clutch Pressure Plate Assembly
Above works refer to “FLYWHEEL AND PILOT
BEARING” section in this manual.
6. Transmission Assembly
Above works refer to “ENGINE ASSEMBLY” sec-
tion in this manual.
7. Starter
Tighten:
Starter bolt to 76 N
⋅m (7.7 kg⋅m/56 lb⋅ft)
8. Transmission Panel
• Connect the battery ground cable.
Legend
1. Adapter
2. Adapter bolt
3. Center bolt
4. Oil seal
5. Ring
6. Collar
7. Sleeve
N6A0623E
Legend
1. Washer
2. Pilot bearing
N6A6504E
N6A0582E
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