3-CYLINDER BLOCK ASSEMBLY
20
CHK
ADJ
NO.
PART NO.
PART NAME
QTY
CAUTION
1
1050454-007000 21×1.2 piston pin retainer
2
2
1050454-003000 ZT180MN Piston pin
1
3
1050454-013000 ZT180MN Piston assembly
1
Assembly
4
1050454-002000 ZT180MN Piston
1
5
1050454-004000 ZT180MN First air ring
1
6
1050454-005000 ZT180MN Second air ring
1
7
1050454-006000 ZT180MN Oil ring combination
1
PROCEDURE:
●
Piston assembly
Turn the opening of the piston retaining ring
⑴
to the vicinity of the gap of the retaining ring groove, and
remove it with needle-nose pliers.
Push the piston pin
⑵
out of the crankshaft connecting rod, and remove the piston
⑶
.
Open the gap at the end of the first air ring
⑷
by hand, and lift the other side to the top of the piston, and
remove the first air ring
⑷
.
Use the same method to remove all gas and oil rings.
CAUTION
：
●
Remove the carbon deposits on the piston ring groove and piston ring, and apply appropriate amount of engine
oil to the piston ring groove.
●
It is necessary to prevent the piston pin retaining ring
⑴
or other foreign objects from falling into the box
during installation and removal.
●
Check whether the piston skirt is scratched or damaged, if any, it must be replaced.
●
When installing the oil ring assembly, you need to install the copper liner ring first, and then install the two
wiper rings. The copper liner ring interface cannot overlap.
●
When installing the air ring, the marked surface should be installed toward the top of the piston, air ring 1:
"R", air ring 2: "2R"
●
When installing, the openings of each air ring and scraper ring should be staggered by 180 degrees.
●
Check the piston pin retaining ring
⑴
, if it is deformed and has no elasticity, it must be replaced.
After-sale
After-sale
Fig.3 CYLINDER BLOCK
ASSEMBLY
Disassemble the piston
