Acura CSX. Instruction — page 67

01

SNR9AEBA32200043351MAAT01

K20Z3 engine

Torque: 16 N·m (1.6 kgf·m, 12 lbf·ft)

8-14

Engine Lubrication

Oil Jet Inspection

1.2 mm (0.05 in.)

1.2 mm
(0.05 in.)

A

B

1. Remove the oil jet, and inspect it as follows.

• Make sure that a 1.1 mm (0.04 in.) diameter drill

will go through the nozzle hole (A) (1.2 mm
(0.05 in.) diameter).

• Insert the other end of a 1.1 mm (0.04 in.) drill

into the oil intake (1.2 mm (0.05 in.) diameter).
Make sure the check ball (B) moves smoothly and
has a stroke of approximately 4.0 mm (0.16 in.).

• Check the oil jet operation with an air nozzle. It

should take at least 200 kPa (2.0 kgf/cm , 28 psi)
to unseat the check ball.

NOTE: Replace the oil jet assembly if the nozzle is
damaged or bent.

2. Carefully install the oil jet. The mounting torque is

critical.

2

*01

SNR9A00A32200043502LAAT00

Exploded View

8-15

Oil Pump Overhaul

6 x 1.0 mm
12 N·m
(1.2 kgf·m, 8.7 lbf·ft)

K20Z2 engine:
8 x 1.25 mm
27 N·m
(2.8 kgf·m, 20 lbf·ft)

UPPER BALANCER
SHAFT HOLDER

DOWEL PINS

BALANCER SHAFT
BEARINGS

REAR BALANCER
SHAFT

FRONT BALANCER
SHAFT

LOWER BALANCER
SHAFT HOLDER

OUTER ROTOR

INNER ROTOR

RELIEF VALVE

SPRING

SEALING BOLT
39 N·m
(4.0 kgf·m, 29 lbf·ft)

OIL PUMP SPROCKET

6 x 1.0 mm
12 N·m
(1.2 kgf·m, 8.7 lbf·ft)

10 x 1.25 mm
44 N·m
(4.5 kgf·m, 33 lbf·ft)

PUMP HOUSING

DOWEL PIN

6 x 1.0 mm
12 N·m
(1.2 kgf·m, 8.7 lbf·ft)

BAFFLE PLATE

K20Z3 engine:
8 x 1.25 mm
28 N·m
(2.9 kgf·m, 21 lbf·ft)

16 °

Apply new engine oil to
the bolt threads.

The valve must slide freely
in housing bore.
Replace the oil pump
as an assembly if scored.

Apply new engine oil to
the bolt threads.

Apply new engine oil to
the bolt threads.

02

03

04

05

Oil Pump Removal

8-16

Engine Lubrication

A

B

A

A

B

1. Turn the crankshaft pulley so its top dead center

(TDC) mark (A) lines up with the pointer (B).

2. Remove the oil pan (see page 7-11).

3. Remove and discard the oil pump chain tensioner.

4. To hold the rear balancer shaft, insert a 6 mm long

pin punch (Snap-on PPC108LA or equivalent) (A)
into the maintenance hole in the lower balancer
shaft holder and through the rear balancer shaft.

5. Loosen the oil pump sprocket mounting bolt.

6. Remove the oil pump sprocket (A), then remove the

oil pump (B).

06

07

08

09

Oil Pump Inspection

Inner Rotor-to-Outer Rotor Radial Clearance
Standard (New): 0.06

0.16 mm (0.002

0.006 in.)

Service Limit:

0.20 mm (0.008 in.)

Pump Housing-to-Rotor Axial Clearance
Standard (New): 0.035

0.070 mm

(0.0014

0.0028 in.)

Service Limit:

0.12 mm (0.005 in.)

Pump Housing-to-Outer Rotor Radial Clearance
Standard (New): 0.15

0.21 mm (0.006

0.008 in.)

Service Limit:

0.23 mm (0.009 in.)

8-17

A

B

B

A

A

B

1. Remove the pump housing.

2. Check the inner-to-outer rotor radial clearance

between the inner rotor (A) and the outer rotor (B).
If the inner-to-outer rotor radial clearance exceeds
the service limit, replace the oil pump.

3. Check the pump housing-to-rotor axial clearance

between the rotor (A) and the pump housing (B). If
the pump housing-to-rotor axial clearance exceeds
the service limit, replace the oil pump.

4. Check the pump housing-to-outer rotor radial

clearance between the outer rotor (A) and the
pump housing (B). If the pump housing-to-outer
rotor radial clearance exceeds the service limit,
replace the oil pump.

5. Inspect both rotors and the pump housing for

scoring or other damage. Replace parts if
necessary.

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