Chery Tiggo. Manual — part 22
Check the inner diameter of each cylinder bore (See
Cylinder Bore Inspection in Section 02 Engine).
CYLINDER BORE
All Cylinders
81.000 - 81.010 mm
Check piston ring to groove side clearance.
• Clean the ring slot using a suitable tool.
• Measure piston ring to groove side clearance.
RING GROOVE CLEARANCE
First Ring
0.04 - 0.08 mm
Second Ring
0.01 - 0.0251 mm
• Wipe the cylinder bore clean. Insert ring and push down with piston to ensure it is square in the bore. The ring
gap measurement must be made with the ring posi-
tioned at least 13 mm from bottom of cylinder bore
and below the bottom of the oil ring travel where
the cylinder bore has minimal wear. Check gap with
feeler gauge.
ENGINE UNIT REPAIR
BESM020063
BESM020051
BESM020052
RING END GAP CLEARANCE
First Ring
0.2 - 0.4 mm
0.8 mm
Second Ring
0.4 - 0.6 mm
1.0 mm
• Check the diameter of the piston pin bore.
• Check the outer diameter of the piston pin.
• Check the inner diameter of connecting rod (small end).
PISTON PIN CLEARANCE
Piston and Piston Pin
0.002 - 0.013 mm
Assembly
1. Install the piston to the connecting rod. Assemble the components in their original positions.
2. Using a piston ring expander, install the piston rings. Assemble the components in their original positions.
3. Assemble all components in the reverse order of disassembly.
ENGINE UNIT REPAIR
BESM020053
BESM020054
02
Connecting Rods
Specifications
Torque Specifications
DESCRIPTION
TORQUE (N·m)
Connecting Rod Bolts
1st Step: Tighten bolts to 25 N·m
2nd Step: Tighten the connecting rod bolts an additional
90°
Clearance Specifications
DESCRIPTION
SPECIFICATION (mm)
Connecting Rod Radial Clearance
0.016 - 0.051
Connecting Rod Axial Clearance
0.002 - 0.013
Disassembly
1. Remove the connecting rod cap bolts.
2. Remove the connecting rod bearing cap.
3. Using a hammer handle or similar tool, push the
piston
and
connecting
rod
assembly
(1)
out
through the cylinder head side of the engine block.
NOTE: Before removing the piston and connecting
rod assembly, check the connecting rod side
clearance.
ENGINE UNIT REPAIR
BESM020043
BESM020044
4. Remove the connecting rod bearings.
CAUTION: When removing the connecting rod
side bearings, note the installation position.
Keep them in the correct order.
Inspection
• Check the radial clearance of connecting rod bearing.
CONNECTING ROD RADIAL CLEARANCE
Radial Clearance
0.016 - 0.051 mm
Assembly
NOTE :
The rod bolts should not be reused.
1. Before installing the NEW rod bolts, the threads and under the bolt head should be oiled with clean engine oil.
2. Install each bolt finger tight, then alternately tighten each bolt to assemble the cap properly.
3. Tighten the connecting rod bolts using the two step
torque-turn method:
• 1st Step: Tighten bolts to 25 N·m
• 2nd Step: Tighten the connecting rod bolts an
additional 90°
4. Using a feeler gauge check connecting rod side clearance.
• Check axial clearance of connecting rod.
ENGINE UNIT REPAIR
BESM020045
LTSM020208
BESM020064
02
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