61
61-15
Disassembly sequence
Assembly sequence
Follow the disassembly sequence in reverse.
Service standards (Unit: mm)
Tightening torque (Unit: N·m {ft.lbs, kgf·m})
Special tools
Location Maintenance item Standard value Limit Remedy
7, 15
Clearance between cylinder
liner and piston
Top – 0.30
Replace
Skirt – 0.20
9 to 12
Piston ring end gap (mea-
sured with ring placed in cylin-
der)
Compression ring – 0.60
Replace
Oil ring – 0.65
9 to 12,
15
Clearance between piston ring
and piston groove
Compression ring – 0.07
Replace
Oil ring – 0.075
14, 15 Clearance between piston pin and piston – 0.07 Replace
14, 19
Clearance between piston pin and connecting rod
small end
– 0.07 Replace
19 End play of connecting rod – 1.5 Replace
19, 20
Clearance between connecting rod big end and
crankshaft
– 0.1 Replace
20 Crankshaft end play – 0.7 Replace
20, 21
Clearance between crankshaft and crankcase
bushing inside diameter
– 0.2 Replace
Mark Parts to be tightened Tightening torque Remarks
Nut (compressor gear mounting) 167 to 186 {17 to 19} –
Bolt (cylinder head mounting) 29 to 34 {3.0 to 3.5} –
Bolt (cylinder liner mounting) 25 to 29 {2.5 to 3.0} –
Bolt (coupling mounting) 53 to 65 {5.4 to 6.6} –
Nut (bearing cover mounting) 8.8 to 10.8 {0.9 to 1.1} –
Stud bolt 5.9 to 12 {0.6 to 1.2} –
Mark Tool name and shape Part No. Application
Piston ring tool MH060014
Removal and installation of
compression rings
1 Lock washer
2 Compressor gear
3 Cylinder head
4 Gasket
5 Valve seat
6 O-ring
7 Cylinder liner
8 O-ring
9 1st compression ring
10 2nd compression ring
11 3rd compression ring
12 Oil ring
13 Snap ring
14 Piston pin
15 Piston
16 Coupling
17 Bearing cover
18 Bearing
19 Connecting rod
20 Crankshaft
21 Crankcase
: Locating pin
: Non-reusable parts
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