Chery Fora (Elara A520). Manual - part 59

CHERY A21 SERVICE MANUAL

         

MECHANISM OF 2.0NALC ENGINE 

39 

Note: Do not rotate the crankshaft during the 
process. 

CHERY A21 SERVICE MANUAL

         

MECHANISM OF 2.0NALC ENGINE 

40 

 

Loosen the connecting rod bolt, remove the 
cap, and measure the maximum width of 
pressed clearance gauge with the ruler on its 
package to get the clearance value. 

Replace with the new connecting rod bearing 
if the examined clearance exceeds the limit. 

Note: Use the same brand consistent with 
assorting sign when you replace the bearing 
bushing.

 

 

Standard 

Value 

Abrasion 

Limit 

Clearance 0.016—0.051 

 

 

Selection of connecting rod bearing: 

You may select the connecting rod bearing by 
observing the sign on the first balance weight 

at the front end of crankshaft.

（see picture, 

unavailable

）

 

 

6)

 

Inspect the planeness of cylinder block 
surface. 

a:

 

Clean the upper surface of cylinder 
block. 

b:

 

Check with ruler and feeler gauge 
whether the surface of cylinder block is 
warped. (Measure it in the sequence of 
A, C, D, E, F, G in the picture) 

C:

 

Revise it if the warping amount is 
excessive. 

Replace with the new cylinder if it exceeds 
the limit. The maximum for the sum of 
permitted abrading thickness of cylinder 
block and cylinder head is: 

 Standard 

Value 

limit 

value 

warping 

amount 

0.04  

 

Clearance Gauge of Plastic

CHERY A21 SERVICE MANUAL

         

MECHANISM OF 2.0NALC ENGINE 

41 

 

CHERY A21 SERVICE MANUAL

         

MECHANISM OF 2.0NALC ENGINE 

42 

 

7) Inspect 

cylinder 

a:  Inspect if the cylinder wall is scratched 

or scored.

 If there are cylinder scoring 

and scratching you need to hone cylinder 
wall, replace cylinder liner or replace 
cylinder block.

 

b: Examine the inner diameter and 

cylindricity of cylinder with cylinder 
gauge. 

 Standard 

value 

Inner diameter 

83.5 

cylindricity 0.008 

cylindricity= Maximum bore

－ Minimum 

bore/2 

As the picture, measure the bores of 3 planes 
along both A direction and B direction 
respectively. Get the maximum and the 
minimum from 6 values, and then subtract the 
half of Minimum from the Maximum to get 
cylindricity;

 

 

3.2.3 Installation 

1)  Spread oil on the piston pin and in the 

piston pin hole, connect the piston and 
connecting rod with piston pin, and 
mount the piston pin circlip. 

 

2)  Mount the piston ring. Mount the rings 

on the piston in the sequence of oil ring 
expander, upper and lower segments, 2nd 
air ring and 1st air ring; Pay attention to 
the direction of piston ring, the side with 
“

TOP

” should be upward. The two 

segments and expander are staggered. 
The angle of expander connector points 
to the top of piston, and the 1st ring and 
2nd ring form 

120°

 with the upper 

expander. 

 

12 mm

Center

Bottom

 

 

The Openings Of Rings Form 

120°With Each Other