Shit, die Pumpe is im Timingchain Cover, das is dann schon ein ganz netter Aufwand...
NOTE: The oil pump is serviced with the timing
chain cover.
1. Remove timing chain cover (1) (Refer to 9 -
ENGINE/VALVE TIMING/TIMING CHAIN COVER -
REMOVAL).
2. Disassemble oil pump (3) (Refer to 9 - ENGINE/
LUBRICATION/OIL PUMP - DISASSEMBLY).
3. Inspect oil pump parts (Refer to 9 - ENGINE/LUBRICATION/
OIL PUMP - INSPECTION).
DISASSEMBLY
1. Remove oil pump cover screws (1) and lift off
cover.
2. Remove pump rotors.
9 - 2788 ENGINE - 8.3L - SERVICE INFORMATION DR
3. Remove oil pressure relief valve (1) and spring (2).
4. Wash all parts in a suitable solvent and inspect
carefully for damage or wear.
CLEANING
Clean all parts thoroughly. Mating surface of the chain case cover should be smooth. Replace pump cover if
scratched or grooved.
INSPECTION
1. Lay a straightedge (1) across the pump cover surface.
If a 0.076 mm (0.003 in.) feeler gauge (2) can
be inserted between cover and straight edge, cover
should be replaced.
DR ENGINE - 8.3L - SERVICE INFORMATION 9 - 2789
2. Measure thickness and diameter of rotors. if the
outer rotor diameter is 82.45 mm (3.246 in.) or
less, replace rotor set and.
3. If either rotor thickness measures 18.92 mm
(0.744 in.) or less, replace rotor set
4. Measure clearance between outer rotor (2) and
case. If measurement is 0.19 mm (0.007 in.) or
more, and outer rotor (2) is within specification,
replace chain case cover.
9 - 2790 ENGINE - 8.3L - SERVICE INFORMATION DR
5. Measure clearance between the outer rotor (2) and
inner rotor (3). If clearance between inner (3) and
outer rotors (2) is 0.150 mm (0.006 in.) or more,
replace rotor set.
6. Place a straightedge across the face of the chain
case cover, in between the bolt holes. If a feeler
gauge of 0.077 mm (0.003 in.) or more can be
inserted between rotors and the straightedge, and
the rotors are within specification, replace the case
cover.
7. Inspect oil pressure relief valve for scoring and free
operation in its bore. Small marks may be removed
with 400 grit wet or dry sandpaper.
8. The relief valve spring has a free length of approximately
68.7 mm (2.70 in.) and should test between
10.2 kg and 12.4 kg (22.5 and 27.5 lbs.) when
compressed to 57 mm (2.24 in.). Replace spring
that fails to meet specifications.
9. If oil pressure is low and pump is within specifications,
inspect for worn engine bearings or other
reasons for oil pressure loss.
