Engine 2.0 (Chery Fora, A21). Manual — part 13

CHERY A21 SERVICE MANUAL

MECHANISM OF 2.0NALC ENGINE

49

7.3 Inspection

1) radial clearance of crankshaft

a): Clean the journal and bearing bushing.

b): Install

crankshaft

c): Make the length of plastic clearance

gauge equal to the width of bearing.
Then put it on the journal paralleling the
axis.

Clearance Gauge

CHERY A21 SERVICE MANUAL

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d):

Mount the main bearing cap carefully
and screw down the bolt with
specified torque.

e):

Dismantle the main bearing cap
carefully.

f):

Measure the width at the most bread
part of pressed plastic line with ruler on
plastic clearance gauge package, then
get clearance value.

Standard

Value

Clearance -0.0035-0.034

Replace the new bearing bushing if the
measured clearance value exceeds the limit
value.

Note: Replace the whole group when
replacing bearing bushing.

Selecting method of main bearing bushing:

By observing the sign on cylinder (see the
picture), we could see 5 As which correspond
to bearing bushings respectively.

There two kinds of signs on this vehicle, A
and B, corresponding to two kinds bushing,
red one and blue one (the color can be
recognized on the new bushing but it is
possible unrecognized the color on the old
one.) A corresponds to red bushing, and B
corresponds to blue bushing.

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2)

Inspect the crankshaft axial clearance

Mount the crankshaft and measure its radical
clearance with micrometer guage.

Standard

Value

Clearance 0.076—0.265

Replace the new thrust washer if the
measured value exceeds the limit value.

Standard thickness of thrust washer:

7.4

Installation

1)

Clean the engine and spread the engine
transmission oil on the crankshaft
journal.

2)

Mount the crankshaft correctly and then
mount the thrust washer.

3)

Mount the cylinder frame and screw
down the crankshaft fastening bolt.

See the picture for the screwing sequence

Screwing way and Torque:

A:

Pre-fasten the bolt according to the
sequence in the picture.

B:

Screw the bolt as the sequence on the
picture to 45±5 N.m.

C:

Screw 180±5°

4)

Mount and screw down the bolt of
frame periphery.

Torque: 23N.m

5) Mount the engine oil strainer, oil pan,

crankshaft front and rear oil seal and oil
pump.

6) Mount the engine accessories, suspend

the engine assembly from vehicle and

CHERY A21 SERVICE MANUAL

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mount the water pipe and insert electric
connector.

8 Replace coolant pump

8.1

Needed tools and auxiliary materials

A box sleeve wrench, a set of open end
wrench, allen wrench, coolant

8.2

Removal

1)

Remove the engine timing belt.

（see

“engine timing calibration” for details.

）

2) Loosen the engine water exhaust pipe,

and exhaust coolant.

3)

Removal the coolant pump.

8.3

Installation

The installing steps are reverse to those for
removal.

Infuse enough coolant after installation.

Note: Do not splash the coolant on the timing
belt and skin.